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Operating Instructions Type 8792, 8793 Positioner

1. 147 B 23 3 3 Operating structure M9 147 23 3 4 Manually Changing the Process Set Point sse 148 5 23 4 MANUAL operating state ssssssssssssssssesssssssesse assa se sas 148 23 4 1 Meaning of the keys unnnsesnnsesnsnennsunsnnunnennsunssnsnnnnnennsnnnunsnnnnnsunnnsnunsnnnnnennunsnnnsnnnnsnsnnnsnnnsnnnnnunnnnsnnnnnn 148 23 4 2 nformation on the display 149 23 4 3 Operating str cture iiaa 149 121 burkert process controller Type 8793 24 AUXILIARY FUNCTIONS FOR THE PROCESS CONTROLLER ssssssssssssssssssssessessssssuesessnseessesaseeesseaieessssanensesans 150 24 1 Overview of the auxiliary functions ss ss ssssssssssssssssssssssse 150 24 1 1 Including auxiliary functions in the main menu oo ences R R n n tenen 151 24 1 2 Removing auxiliary functions from the main tette tenen 151 24 2 CUTOFF Sealing function for the position controller Type 8793 152 24 3 SECURITY Code protection for the 56 1145
2. 87 a 20 3 3 Operating structure casi natsussniesensetsazsunatensedpeaetastasearbasesnasansedsnsact enant iaaii 87 5 20 4 MANUAL operating state s ssssssssssssssssssssssssssesasse ssas too sto yarana era 88 20 4 1 Meaning of the keys ttt Yan tenete edet te ete su au dede 88 lt 20 4 2 nformation on the display sssssseseseeesseeenee tentent tentent tente ttentet taret tette tint ta ttes tnt 89 20 4 3 Operating structure sess tentnn ttn aR iinei aA 89 21 CONFIGURING THE AUXILIARY FUNCTIONS sssoeonnasssoenunessennnussseennanssoenunussenennnussennanssosennanssnenunussennnnnsenennansnonnunannen 90 21 1 Keys at the Configuration 90 21 2 Configuration Men s PA 91 21 2 1 Switching between process operating level and configuration level 91 21 2 2 Including auxiliary functions in the main menu 91 77 Type 8792 8793 burkert FLUID CONTROL SYSTEMS Start up operation position controller Type 8792 21 2 3 Removing auxiliary functions from the main 92 21
3. 206 44 PROPERTIES OF PID 5 2 5 2 208 44 1 man aan En en anna Enten RE EEn TREE 208 rr MM Led c 209 44 3 D portion u E 210 44 4 Superposition of P and D Portions s ssssssssssssessesssssssessse ssassn sata snam sno 211 44 5 Implemented PID controller 2 5 22 22 01 accsasacuectscc iaa cnaccuucucacascchnc ctun isse 212 44 5 1 D Portion with Delay retten a tret titu 212 44 5 2 Function of the Real PID Controller eese enne 212 45 ADJUSTMENT RULES FOR PID 11 95 5 213 45 1 Adjustment Rules according to Ziegler and Nichols Oscillation Method 213 45 2 Adjustment Rules according to Chien Hrones and Reswick Actuating Variable Jump Method sss ssssssssssssssesssssssesssssnseessesseesssrssseesssnseessesaneeessesneesssraueeersonseessesaneeesseosses 215 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 205
4. 222 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 221 burkert FLUID CONTROL SYSTEMS Type 8792 8793 Master code MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 222 48 MASTER CODE m ni s n nan izm m me al ies nn es x x om ns ox s Master code 3108 pav 6002760 10 peyuud peseeje Ty snyeig v UOISI A NI 2298110001 NVIA burkert FLUID CONTROL SYSTEMS o o o S o 9 E es D o o D www burkert com
5. 219 47 1 Set Parameters of the Process Controlller ssssssssssssssssssssesstseeseessessesaesasssnssnsencenceeseesesaeeateatesaesneeseeaeeaseanees 219 217 _ iL Type 8792 8793 burkert p FLUID CONTROL SYSTEMS Tables for customer specific settings MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 218 46 TABLE FOR YOUR SETTINGS ON THE POSITION CONTROLLER 46 1 Settings of the Freely Programmable Characteristic Node position Valve stroke set point Type 8792 8793 Tables for customer specific settings burkert FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 47 47 1 TABLE FOR YOUR SETTINGS ON THE PROCESS CONTROLLER 8793 Set Parameters of the Process Controller Date Date Date Date KP TN Xo DBND DP PVmin PVmax SPmin SPmax UNIT K factor FILTER INP 219 Type 8792 8793 burkert R FLUID CONTROL SYSTEMS Tables for customer specific settings MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 220 Type 8792 8793 FLUID CONTROL SYSTEMS Master code CONTENTS 48
6. 154 24 4 SIG ERROR Configuration of signal level fault detection 156 24 5 OUTPUT option Configuring the outputs 157 24 6 CAL USER Calibrating the actual value display and the inputs for the process values 162 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 122 Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 22 STARTING UP AND ADJUSTING THE PROCESS CONTROLLER 22 1 Safety instructions N DANGER Risk of injury from high pressure in the equipment Before loosening the lines and valves turn off the pressure and vent the lines N WARNING Risk of injury from improper start up Start up may be carried out by authorised technicians only and with the appropriate tools Risk of injury from unintentional activation of the system and an uncontrolled restart Secure system from unintentional activation Following start up ensure a controlled restart 22 2 Installation Before start up carry out fluid and electrical installation of the positioner and valve To set up the positioner as a process controller it is first necessary to
7. SafePos on Position o Process value Setpoint Temperature Operation mode Errors l Setpoin Operation mode Error reset MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 PCONTROL active NO URN CONTROL active only when process controller activated only when process controller activated otherwise CMD Fig 112 Operating structure BUS COMM process controller 8793 184 Type 8792 8793 zu PROFIBUS DP burkert MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 31 1 3 BUS COMM Description of the menu options Input the device address Press the arrow keys to set a value from 0 126 and confirm with the selection key on the right OK Activate to approach the safety position if the bus communication fails SafePos off The position is approached which corresponds to the set point value last transferred default setting SafePos on When SafePos on is set the following configurations may occur Active SAFEPO menu option If a fault is detected in the bus communication the actuator moves to the lower SAFEPOS set position Inactive SAFEPOS menu option If a fault is detected in the bus communication the actuator moves to the end position which it would specify in the isolated state BUS PDI Selection of the process values which are to be transferred
8. Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 21 3 13 SIG ERROR Configuration of signal level fault detection The S G ERROR function is used to detect a fault on the input signal Fault detection Fault detection can be selected at 4 20 mA signal only Fault with input signal lt 3 5 mA 0 5 of final value hysteresis 0 5 of final value If other signal types are selected the respective menu branch is hidden If this configuration does not allow fault detection not available is indicated in the selection menu SIG ERROR SPICMD 1 ERROR off Signal fault detection inactive ED ERROR on O Signal fault detection active ex SAFEPOS Activate approach of safety position only possible if ERROR on is selected in the Selection menu SafePos off 6 Approach of the safety position is not active saeson O Approach of the safety position is active Approach of the safety position which is saved in SAFEPOS Fig 59 Operating structure SIG ERROR f signal fault detection is activated the respective fault is indicated on the display see chapter Error Messages on the Display Safety position SAFEPOS on When SAFEPOS on is set the following configurations may occur Active menu option SAFEPOS If a fault is detected the actuator moves to the l
9. burkert FLUID CONTROL SYSTEMS Additional technical information Type 8792 8793 43 SELECTION CRITERIA FOR CONTINUOUS VALVES The following criteria are crucial for optimum control behaviour and to ensure that the required maximum flow is reached the correct selection of the flow coefficient which is defined primarily by the orifice of the valve close coordination between the nominal width of the valve and the pressure conditions in consideration of the remaining flow resistance in the equipment Design guidelines can be given on the basis of the flow coefficient k value The k value refers to standardised conditions with respect to pressure temperature and media properties The k value describes the flow rate of water through a component in m3 h at a pressure difference of Ap 1 bar and T 20 C The value is also used for continuous valves This indicates the k value when the continuous valve is fully open Depending on the specified data it is necessary to differentiate between the two following cases when selecting the valve a The pressure values p1 and p2 known before and after the valve represent the required maximum flow rate Q which is to be reached max The required k value is calculated as follows ks Qmax ABS 5 n 1 V bo Meaning of the symbols kys flow coefficient of the continuous valve when fully open m3 h Q maximum volume flow rate m3 h Ap
10. 20 mA 0 10V 0 5V Address X BAUDRATE BUS FAIL SafePos off BUS COMM BUS PDI PCONTRL active BUS PDO MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Fig 100 Operating structure 1 1 only process controller 8793 2 only process controller 8793 and activated process controller 3 only field bus 4 only DeviceNet 168 5 only Profibus DP Type 8792 8793 burkert Operating structure of the positioner FLUID CONTROL SYSTEMS F P O LIN T ADD FUNCTION 4 gt CHARACT y 5 5 5 000 y 100 gt 100 y 100 gt 100 CUTOFF Max 100 00 Max 100 00 CUT type Type PCO 275 2 DIRACT SPLTRNG MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 X LIMIT Fig 101 Operating structure 2 1 only process controller 8793 2 only position controller 8792 169 burkert FLUID CONTROL SYSTEMS Type 8792 8793 Operating structure of the positioner X TIME X CONTROL DBND 1 P CONTROL PARAMETER SETUP MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 TV 0 0 XO 0 0 FILTER 0 FILTER 0 PV INPUT 4 20 mA Frequenz PT 100 PVmin 0 0 bar PVmax 100 0 ba PV SCALE PVmax 100 0 external Fig 102 Operating structure 8 1 only process controller 8793 170
11. 30 ELECTRICAL CONNECTIONS N DANGER Risk of injury due to electrical shock Before reaching into the device or the equipment switch off the power supply and secure to prevent reactivation Observe applicable accident prevention and safety regulations for electrical equipment N WARNING Risk of injury from improper installation Installation may be carried out by authorized technicians only and with the appropriate tools Risk of injury from unintentional activation of the system and an uncontrolled restart Secure system from unintentional activation Following installation ensure a controlled restart For operation of the device always connect the 5 pole inversely coded M12 socket and the 8 pole M12 plug power supply NOTE Electromagnetic compatibility EMC is only ensured if the appliance is connected correctly to an earthing point On the outside of the housing is a TE terminal for connection of the technical earth TE Connect the TE terminal to the earthing point via a shortest possible cable maximum length 30 cm MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 178 Type 8792 8793 PROFIBUS DP burkert FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 30 1 Connection diagram Type 8792 M12 8 pole plug M12 5 pole socket inversely coded PROFIBUS
12. English Types 8792 8793 Description of Systerm FLUID CONTROL SYSTEMS 7 1 Schematic representation of the position control X CONTROL DBND o e e N o o E 5 B o Lu pi Jj x x o 2 m 5 5 lt PE T c gt T o m B g 2 5 N r 3 lt 3 15 N K d 02 E o z lt Q gt gt to O I as oo 1a Q sf Fig 4 Schematic representation of position control 23 English burkert FLUID CONTROL SYSTEMS Descri ption of System Types 8792 8793 7 2 Properties of the position controller software Position controller with additional function Additional function Sealing function Valve closes tight outside the control range Specification CUTOFF of the value in from which the actuator is completely deaerated when 0 or aerated when 100 Stroke limit Mechanical valve piston movement only within a defined X LIMIT stroke range Signal range splittin Splitting of the uniform signal range to tvvo or more g ge splitting g g g SPLTRNG positioners Correction line to adjust the operating characteristic The process characteristic can be linearized CHARACT nsensitivity range The position controller is initially actuated from a control y rang y X CONTROL difference to be defined Effective sense of direction of th
13. Fig 86 Setting numerical values SP 23 4 MANUAL operating state Without bar running from left to right along the upper edge of the display In MANUAL operating state the valve can be opened or closed manually 23 4 1 Meaning of the keys Left selection key MENU Switch to the Configuration level press for approx 3 s Right selection key MANU Switch between the AUTOMATIC AUTO or MANUAL MANU operating modes Up arrow key OPN Aerate the actuator CLS Control function A SFA Valve opens Control function B SFB Valve closes Control function SFI Connection A1 aerated Down arrow key CLS Deaerate the actuator OPN Control function A SFA Valve closes Control function B SFB Valve opens Control function SFI Connection A2 aerated only if Fall is set in the DIR ACT auxiliary function Table 40 AUTOMATIC operating state meaning of the keys Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 SFA Actuator closes by spring force o SFB Actuator opens by spring force SFI Actuator double acting 23 4 2 Information on the display After switching to the MANUAL operating state the display automatically jumps to the actual position POS of the valve actuator 23 4 3 Operating structure AUTOMATIC operating state MANUAL operating state
14. S0SKR 72 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Contents START UP AND OPERATION OF THE POSITION CONTROLLER TYPE 8792 7 5 77 19 Starting up and adjusting the position 1 5 79 20 Operating the position controller a A R aa a aa aa a a a aza a DM DR sS RES 85 21 Configuring the auxiliary functions s s ssssssssssssssssesss sssasse natos nnna reaaaaeaarea sa 90 START UP AND OPERATION OF THE POSITION CONTROLLER TYPE 8793 121 22 Starting up and adjusting the process controller s sss sessssssssss ssseise atn sis 123 23 Operation of the process controller z l dada aa siesta aceieincneataiionsataininencannaiiacnets 145 24 Auxiliary functions for the process controller s s sssssesssssssssse tanus tno sto ssy snai 150 OPERATING STRUCTURE OF THE 5 5 167 S 25 Operating structure ayaga a az aydaa DUREE EDGE 168 9 E PROF BS DP m 175 t 26 General Informati ONs
15. Following installation ensure a controlled restart Working connection 2 connection A2 Supply pressure connection 1 4 7 bar connection P Working connection 1 connection A1 Deaeration connection Fig 23 Fluid installation Location of the connections 59 burkert FLUID CONTROL SYSTEMS Installation Type 8792 8793 Procedure Apply supply pressure 1 4 7 bar to the supply pressure connection P For single acting actuators Connect one working connection A1 or A2 depending on required safety position to the chamber of the single acting actuator Safety positions see chapter 70 1 Safety positions after failure of the electrical or pneumatic auxiliary power Seal a working connection which is not required with a plug For double acting actuators Connect working connections A1 and A2 to the respective chambers of the double acting actuator o Important information for perfect control behaviour This ensures that the control behaviour is not extremely negatively affected in the upper stroke range on account of too little pressure difference keep the applied supply pressure at least 0 5 1 bar above the pressure which is required to move the pneumatic actuator to its end position If fluctuations are greater the control parameters measured with the X TUNE function are not optimum during operation keep the fluctuations of the
16. Process set point value MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Transmitter Fig 5 Signal flow plan of process controller 26 English Types 8792 8793 A FLUID CONTROL SYSTEMS Description of System Schematic representation of process control 8 1 d3aL dS Ad ano Wu r x LIWITX AS 0 AOL ds vu 02 31VOS dS yw oz ds dfil3s A 313 1041 NHA Maria Ad AWOS d HINILX 34 1 1OVHVHO QNO WIQ qaq qol 7 y M JlOHINOOX hiz 1OVWIa zr 6002 601 10 peuud peseejeJ Ty smeig v UOISI A NI 2268110001 NVIA Schematic representation of process control Fig 6 27 burkert Types 8792 8793 FLUID CONTROL SYSTEMS Descri ption of System 8 2 Properties of the position controller software Additional function Position controller with additional function Correction line to adjust the operating The process characteristic can be linearized characteristic CHARACT Sealing function Valve closes tight outside the control range Specification CUTOFF of the value in from which the actuator is completely deaerated when 0 or aerated when 100 Effective sense of direction of the controller set Reversal of the effective sense of directio
17. Table 3 Properties of the position controller software Position controller with additional function hierarchical control concept 25 English burkert Types 8792 8793 FLUID CONTROL SYSTEMS Descri ption of System 8 TYPE 8793 WITH PROCESS CONTROLLER FUNCTION If the positioner Type 8793 is operated with process controller function the position control mentioned in chapter 7 becomes the subordinate auxiliary control circuit this results in a cascade control The process controller in the main control circuit of the positioner has a PID function The process set point value SP is specified as set point value and compared with the actual value PV of the process variable to be controlled The position measuring system records the current position POS of the pneumatic actuator The position controller compares this actual position value with the set point value CMD which is determined by the process controller If there is a control difference Xd1 the actuator is aerated and deaerated via the control system In this way the position of the actuator is changed until control difference is 0 Z2 represents a disturbance variable Position Control system Continuous controller Solenoid valves valve Position measuring system Position control circuit Valve opening sp Xd2 CMD Position 0 control Circuit _ Process variable E Process Process controller
18. 24 V Normally closed output in switched state low V Table 41 witching status OUT BIN POS gt LIM process controller type Type 8793 Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 OUT Safepos Output of message Actuator in safety position Press the arrow keys to mark the OUT Safepos menu option and confirm with the selection key on the right SELEC In the OUT BIN1 2 type menu option input the required switching status normally open normally closed see Table 42 OUT ERR SP CMD Output broken sensor process set point value Press the arrow keys to mark the OUT ERR SP CMD menu option and confirm with the selection key on the right SELEC In the OUT BIN type menu option input the required switching status normally open normally closed see Table 423 OUT ERR PV Output broken sensor process actual value Press the arrow keys to mark the OUT ERR PV menu option and confirm with the selection key on the right SELEC In the OUT BIN1 2 type menu option input the required switching status normally open normally closed see Table 423 OUT remote Output operating state AUTOMATIC MANUAL Press the arrow keys to mark the OUT remote menu option and confirm with the selection key on the right SELEC In
19. General Information and Safety Instructions CONTENTS 1 OPERATING INSTRUCTIONS ccsssssssssssssssssssssssssssssssnssussnsssssssssssassatssussusessssessesssonsonvensenesessesesaeeatesueaueenssseeaueateaeonvenvenusenseseeaes 8 MDs Symbols 8 2 AUTHORIZED USE e 9 21 Restric ons UV ts R 9 2 2 Predictable sack ia ai aca aad an GERD a Ra aaa araya DRE cca e DM CR ERR 9 3 BASIC SAFETY INSTRUCTIONS 7 restitit tta tette ttt asa sa saya amaya asar ar std 10 4 GENERAL INFORMAT ON 12 4 1 Scope of S pp iy sU a ct 12 4 2 13 4 3 Master code y9 U v r ayda R azd a da R orc NC C Cad sS EE aa CC azd DE a CC un dd 13 4 4 Information on the Internet ttti toI P o EE 13 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 burkert Type 8792 8793 FLUID CONTROL SYSTEMS General Information Safety Instructions MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 1 OPERATING INSTRUCTIONS The operating instructions describe the entire life cycle of the
20. To save the changed settings leave the configuration level by pressing the left selection key EXIT The positioner is now back on the process operating level Only when you leave the configuration level by pressing the right selection key are the changed param eters and settings saved save EEPROM 19 4 Factory settings of the position controller Function Factory setting Function Factory setting INPUT 4 20 mA X CONTROL DBND 1 096 KXopn 1 Values of X TUNE determined KXcls 1 Values of X TUNE determined After running SET FACTORY 1 CHARACT linear DIR CMD Rise CUTOFF Min 096 Max 10000 SECURITY DIR ACT Rise Access Code 1 SAFEPOS SPLTRNG Min 000 Max 10000 SIG ERROR SP CMD Input Error off X LIMIT Min 096 Max 10000 OUTPUT OUT ANALOG Out POS Open 1s Values of X TUNE determined OUT type 4 20mA Close 1s Values of X TUNE determined After running SET FACTORY 1 s OUT BIN1 Out DEV X Lim DEV X 1 000 OUT BIN1 type normally open BINARY IN SafePos OUT BIN2 Out DEV X Lim DEV X 1 000 BIN IN iype normally open OUT BIN1 type normally open only optional Table 26 Factory settings of the position controller Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 19 5 Specifying the standard settings When starti
21. Valve closed Release key Release key no operator action Configuration Fig 87 Operating structure MANUAL Valve open 149 burkert FLUID CONTROL SYSTEMS Type 8792 8793 Start up operation process controller Type 8793 24 CONTROLLER In this chapter only those auxiliary functions are described which differ from the position controller Type 8792 All other auxiliary functions and their settings can be found in the chapters entitled Start up and operation of the position controller Type 8792 21 Configuring the auxiliary functions 24 1 ADD FUNCTION MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 CD CHARACT CUTOFF DIR CMD DIR ACT SPLTRNG X LIMIT X TIME X CONTROL P CONTROL SECURITY SAFEPOS SIG ERROR BINARY IN OUTPUT CAL USER SET FACTOR SER I O EXTRAS SERVICE AUXILIARY FUNCTIONS FOR THE PROCESS Overview of the auxiliary functions Selection of the transfer characteristic between input signal and stroke correction characteristic Sealing function for position controller Effective sense of direction between input signal and set point position Assignment of the aeration state of the actuator chamber to the actual position Signal split range input signal as for which the valve runs through the entire stroke range Limit of the mechanical stroke range Lim
22. 5 V 0 10 V In the CAL USER menu press the arrow keys to select the calibr INP and confirm with the selection key on the right ENTER Accept the minimum input signal 0 mA 4 mA 0 V Using the arrow keys select the NP 0 mA 4 mA O V menu option and confirm with the selection key on the right INPUT Specify the minimum value of the unit signal at the input and confirm this value with the selection key on the right OK Accept the maximum input signal 20 mA 5 V 10 V Using the arrow keys select the NP 20 mA 5 V 10 V menu option and confirm with the selection key on the right INPUT Specify the maximum value of the unit signal at the input and confirm this value with the selection key on the right OK MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 The signal type is displayed which is selected in the INPUT menu 4 20 mA 0 20 mA 0 5 V 0 10 V Only if external set point value default is set in the PCONTROL SETUP SP INPUT menu 163 burkert FLUID CONTROL SYSTEMS Start up operation Type 8792 8793 process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 164 calibr PV Calibrating the process actual value 4 20 mA or Pt 100 D 4 20mA p G Des calibr PV PV PV 4 mA T Go PV 20 mA UU Go G
23. 8 Configuration of the binary output 2 Fig 61 Operating structure OUTPUT position controller type Type 8792 111 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 112 OUT ANALOG Configuring the analogue output Only for the versions one analogue output one analogue and two binary outputs The feedback signal of the current position POS or of the set point value CMD can be transmitted to the control centre via the analogue output OUT ANALOG Output of the current position Output of the set point value 4 20mA A L 0 20 mA O Selection of the 0 10V O unit signal O Fig 62 Operating structure OUTPUT ANALOG position controller type Type 8792 Changed values are not transferred into the memory EEPROM until the main menu MAIN is left OUT BIN1 Configuring the binary output 1 3 OUT BIN2 Configuring the binary output 2 The following description is valid for both binary outputs OUT BIN 1 and OUT BIN 2 as the operation in the menu is identical The binary outputs 1 and 2 can be used for one of the following outputs Alarm output for excessively large control deviations of the position controller for the output of the current position with respect to a specified limit position gt or lt for the output actuator in saf
24. PV 20 mA If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged Fig 98 Operating structure CAL USER PV 4 20 process controller Type 8793 In the CAL USER menu press the arrow keys to select the calibr PV and confirm with the selection key on the right ENTER Accept the minimum input signal 4 mA Press the arrow keys to mark the PV 4 mA menu option and confirm with the selection key on the right INPUT Specify the minimum value of the unit signal at the input and confirm this value with the selection key on the right OK Accept the maximum input signal 20 mA Press the arrow keys to mark the PV 20 mA menu option and confirm with the selection key on the right INPUT Specify the maximum value of the unit signal at the input and confirm this value with the selection key on the right OK Q Pt 100 calibr PV F PT100 O Actual value C 0000 Input new value in C If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged Fig 99 Operating structure CAL USER PV Pt 100 process controller Type 8793 Type 8792 8793 Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Press the right selection key ENTER to select the input screen for Pt 700
25. Set middle position as described in chapter WARNING 1 to the actuator 14 2 4 Aligning lever mechanism An optimum connection can provide a more accurate position measurement Warning information gives tips on optimized operation The device is operational even if this warning information is not observed Warning information is automatically hidden after several seconds Table 50 Error and warning message on X TUNE position controller 8792 37 2 Other faults Problem Possible causes Remedial action POS 0 when CMD gt 0 or Sealing function CUTOFF has Deactivate sealing function POS 100 en when CMD lt 100 unintentionally activated Table 51 Other faults position controller 8792 195 HB H Type 8792 8793 burkert FLUID CONTROL SYSTEMS Servicing and Troubleshooting the Position Controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 196 Type 8792 8793 burkert FLUID CONTROL SYSTEMS Servicing and Troubleshooting the Process Controller Type 8793 CONTENTS 38 ilg pylue 198 39 ERROR MESSAGES AND MALFUNCTION S 198 39 1 Error Messages on the Display cnncta na a aZ R k k Inn D 198 39 1 1 General Error Messages iiaii a a
26. V Table 33 Switching status OUT BIN MANUAL AUTOMATIC position controller type Type 8792 115 burkert FLUID CONTROL SYSTEMS Start up operation Type 8792 8793 position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 116 21 3 16 CAL USER Calibrating the actual value display and the inputs for the position set point value The following points can be manually calibrated with this function Position display POS 0 100 Position set point value display INPUT CAL USER calibr POS POS lower O POS upper O INP 4mA 0 INP 0 20mA 0 INP 20mA Press forapprox copyFACT USER die Reset the settings of CAL USER to factory settings If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged The signal type is displayed which is selected in the INPUT menu 4 20 mA 0 20 mA 0 5 V 0 10 V Fig 64 Operating structure CAL USER position controller type Type 8792 Remove the CAL USER auxiliary function to re activate the factory calibration Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 Procedure calibr POS Calibrating the actual value display POS 0 100 In the CAL USER menu press the arrow keys to select the calibr POS and confirm with the
27. depending on the con nection of the control cables not defined Table 7 Safety Positions Fig 8 Connection A1 Sealing working connection 2 Fig 9 Sealing vvorking connection 1 Connection A2 31 English burkert FLUID CONTROL SYSTEMS Types 8792 8793 Description of System MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 32 10 2 Factory settings of the positioner Function Factory setting INPUT CHARACT DIR CMD CUTOFF DIR ACT SPLTRNG X TIME Open Close 4 20 mA linear Rise Min 0 Max 100 Rise Min 0 Max 100 Min 0 Max 100 1s Values of X TUNE determined 1s Values of X TUNE determined After running SET FACTORY 1s OUTPUT OUT ANALOG Out POS OUT BIN1 OUT BIN2 BINARY IN BIN IN type OUT type 4 20mA Out DEV X Lim DEV X 1 0 OUT BIN1 type normally open Out DEV X Lim DEV X 1 090 OUT BIN1 type normally open SafePos normally open Table 8 Factory settings are Ea Function Factory setting X CONTROL DBND 1 096 KXopn 1 Values of X TUNE determined KXcls 1 Values of X TUNE determined After running SET FACTORY 1 SECURITY Access Code 1 0000 SAFEPOS 0 SIG ERROR SP CMD Input Error off P CONTROL PARAMETER DBND KP TN TV XO FILTER SETUP SP INPUT internal PV INPUT 4 20 mA PV SCALE PVmin
28. 9999 depending on internal scaling If the value is too small or too large the last valid value is used and is indicated in ERR with HEX 14 PDO MODE Operating mode operation mode GSD file PDO MODE Value range O 1 or 12 Identifier HEX 81 00 16 0 AUTO 1 HAND 12 BUSSAFEPOS If the value is too small or too large the last valid value is used and is indicated in ERR with HEX 16 If the value gt ERR is reset Identifier HEX 81 00 17 PDO 0 Position controller GSD file PDO CONact 1 Process controller Identifier HEX 81 00 19 Table 47 Process Data Output PROFIBUS DP Type 8792 8793 Teils eur PROFIBUS DP burkert MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 34 BUS STATUS DISPLAY The bus status is indicated on the display on the device Display Explanation Troubleshooting BUS offline Bus connection including Device is not connected to the plug assignment correct is displayed approx every bus 3 seconds Check power supply and bus connection of the other nodes Table 48 Bus status display PROFIBUS DP 189 Type 8792 8793 burkert PROFIBUS DP 35 CONFIGURATION WITH SIEMENS STEP7 35 1 Example 1 of a position controller Type 8792 Transfer of set point and actual value Bl SIMA TIC PC Forse WE Y Drian Sie 1 um Hie aa erholen ere M rset A 6 53 Ayman manage sim
29. FLUID CONTROL SYSTEMS Installation Type 8792 8793 16 3 Type 8793 designation of the circular connectors and contacts Operating voltage Process actual value Binary outputs and diverse signals Y Y Function earth FE Fig 25 Type 8793 designation of the multi pole connectors and contacts Location of the DIP switch Symbols for Location of the switch position DIP switch mum Switch on right LE 1 Svvitch on left MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Fig 26 Location of the DIP svvitch symbols for svvitch position 64 Type 8792 8793 burkert Installation FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 16 4 Connecting the process controller 8793 First connect the process controller as described in chapter 76 2 Connection of the position controller Type 8792 16 4 1 Plug assignments of the process actual value input M8 circular plug mae n m C 4 20 mA 24 V transmitter supply mermally suppliga Output from transmitter GND Bridge after GND GND from 3 conductor transmitter CET Switch on left 4 20 mA externally supplied not used E HI Switch on right Process actual not used Process actual Frequency internally supplied Frequency exter nally supplied Pt 100 see informa
30. Reset the settings of CAL USER to copy AG Ee SER 3s factory settings If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged The signal type is displayed which is selected in the INPUT menu 4 20 mA 0 20 mA O 5 V 0 10 V Fig 97 Operating structure CAL USER process controller Type 8793 Remove the CAL USER auxiliary function to re activate the factory calibration Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 Procedure calibr POS Calibrating the actual value display POS 0 100 In the CAL USER menu press the arrow keys to select the calibr POS and confirm with the selection key on the right ENTER Accept the minimum position Press the arrow keys to mark the POS lower X menu option and confirm with the selection key on the right SELEC Approach the minimum position of the valve using the arrow keys OPN CLS and confirm this value by pressing the selection key on the right OK Accept the maximum position Press the arrow keys to mark the POS upper X menu option and confirm with the selection key on the right SELEC Approach the maximum position of the valve using the arrow keys OPN CLS and confirm this value by pressing the selection key on the right OK calibr SP Calibrating the process set point value 4 20 mA 20 mA
31. operation Type 8792 8793 position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 108 21 3 12 SAFEPOS Input the safety position This function specifies the actuator safety position which is started at defined signals The set safety position is only started if there is a corresponding signal on the binary input Configuration see chapter 21 3 14 BINARY IN Activation of the binary input or if a signal fault occurs Configuration see chapter 21 3 13 SIG ERROR Configuration of signal level fault detection In the case of the bus version Profibus DeviceNet the safety position is also started with corresponding parameter telegram BUS ERROR adjustable If the mechanical stroke range is limited with the X L MIT function only safety positions within these limits can be started This function is executed in AUTOMATIC mode only Factory setting 000 Safepos 000 nput the safety position Adjustment range 0 100 If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged If the safety position is O or 100 00 the actuator is completely deaerated or aerated as soon as the safety position is active in the SIG ERROR or BINARY IN auxiliary functions Fig 58 Operating structure SAFEPOS Changed values are not transferred into the memory EEPROM until the main menu MAIN is left
32. printed 01 09 2009 4 2 VVarranty This document contains no promise of guarantee Please refer to our general terms of sales and delivery The vvar ranty is only valid if the positioners Type 8792 and Type 8793 are used as intended in accordance vvith the specified application conditions The vvarranty extends only to defects in the positioners Type 8792 and Type 8793 and their components VVe accept no liability for any kind of collateral damage vvhich could occur due to failure or malfunction of the device 4 3 Master code Operation of the device can be locked via a freely selectable user code n addition there is a non changeable master code with which you can perform all operator control actions on the device This 4 digit master code can be found on the last pages of these operating instructions in the chapter entitled Master code If required cut out the code and keep it separate from these operating instructions 4 4 Information on the Internet The operating instructions and data sheets for Type 8792 and Type 8793 can be found on the Internet at www burkert com gt Documentation Type 8792 or Type 8793 There is also complete documentation on CD The complete operating instructions can be ordered by quoting the following identification number 804625 13 Type 8792 8793 burkert FLUID CONTROL SYSTEMS General Information Safety Instructions MAN 1000118577 EN Version A Status R
33. 1 1 Control and display elements When the operating voltage has been switched on the positioner is at the process operating level in the AUTO MATIC operating state At the process operating level the normal control mode is implemented and monitored AUTOMATIC and the valve is manually opened or closed MANUAL 0 0 Display Description of the key configuration Right selection key Down arrow key Up arrow key Left selection key Fig 84 Operating module Specifying the Basic Settings 23 1 Switching between the operating states The right Selection key can be used to switch between the two operating states AUTOMATIC AUTO and MANUAL MANU In the AUTOMATIC operating state a bar runs along the upper edge of the display from left to right 145 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation process controller Type 8793 23 2 Switching between the operating levels Process operating level gt Configuration level To switch to the configuration level in the MANUAL or AUTOMATIC operating state hold down the left selection key MENU for approx 3 seconds countdown two bars converge on the display At the Configuration level the operating parameters can be input or changed auxiliary functions supplemented or the automatic adjustment X TUNE of the controller started A precise description of the individual functions can be found in chapter Configuring the auxiliary func
34. 14 Attachment kit for push drives Type 8792 8793 m Installation burkert MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 14 2 2 Installation WARNING Risk of injury from improper installation Installation may be carried out by authorised technicians only and with the appropriate tools Risk of injury from unintentional activation of the system and an uncontrolled restart Secure system from unintentional activation Following assembly ensure a controlled restart Procedure Using Q the clamping pieces G hexagon bolts and circlips attach the hoop to the actuator spindle Fig 13 Attaching the hoop Select short or long lever according to the stroke of the actuator see Table 14 Attachment kit for push drives part no 6a 6b Assemble lever if not pre assembled Fig 14 49 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Installation Fig 14 Assembling the lever The gap between the driver pin and the axle should be the same as the drive stroke As a result the lever has a swivel range of 60 see Fig 155 Slevving range of the position measuring system The maximum slewing range of the position measuring system is 120 Svvivel range of the lever To ensure that the position measuring system operates at a good resolution the svvivel range of the lever must be at least
35. 184 31 1 3 BUS COMM Description of the menu options 185 lt 2 32 FUNCTIONAL DEVIATIONS FROM THE STANDARD 7 5 186 gt z 33 CONFIGURATION IN THE PROFIBUS DP 55 2 5 187 N amp 33 1 Configuration of the Process Values 187 8 94 BUS STATUS D SPLAY t 189 i 35 CONFIGURATION WITH SIEMENS 5 5 190 35 1 Example 1 of a position controller Type 8792 Transfer of set point and actual value 190 35 2 Example 2 of a process controller Type 8793 Transfer of several process values 191 175 Type 8792 8793 burkert PROFIBUS DP 26 GENERAL INFORMATION The following sections of the general operating instructions do not apply to the positioner with PROFIBUS DP Variants of the positioner Initial start up Electrical connection Specifying the standard settings Function INPUT Function SPLTRNG Function BINARY IN Function OUTPUT Function CAL USER calibr INP Function CAL USER calib
36. 2 only for frequency signal type PV INPUT frequency Type 8792 8793 burkert Operating structure of the positioner FLUID CONTROL SYSTEMS SP SCALE SPmin 0 0 bar SPmin 0 0 SPmax 100 0 ba SPmax 100 0 PCO INIT SECURITY CODE CODE MAIN MANU AUTO ADDFUNCT POLIN Safepos 0 Safepos 0 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Fig 103 Operating structure 4 1 only process controller 8793 2 only for external set point value default SP INPUT external 171 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Operating structure of the positioner BINARY IN SAFEPOS MANU AUTO BIN IN TYPE normally open normally closed Out POS Out CMD OUTPUT OUT ANALOG Lim DEV X 1 0 Lim DEVX 1 Lim POS 000 OUT BIN 1 type Lim POS 0 normally open normally closed MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Fig 104 Operating structure 5 172 1 only process controller Type 8792 8793 burkert Operating structure of the positioner FLUID CONTROL SYSTEMS R OUT BIN2 OUT ERR Pv Lim DEV X 1 0 Lim POS 0 OUT BIN 2 type Lim DEVX 1 Lim POS 0 normally open normally closed POS lower POS upper 0 CAL USER INP 4mA 0 INP 20 mA 0 calibr
37. 60 The swivel movement of the lever must be within the position measuring system slewing range of 120 The scale printed on the lever is not relevant MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 1 e 2 Ws ok The svvivel movement of the lever must be vvithin oat 09 the position measuring system slevving range of or ee 120 i oO 5 k Fig 15 Slewing range of the lever Attach lever to the axle of the positioner and screw tight 50 Type 8792 8793 burkert Installation FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 14 2 3 Attaching mounting bracket Attach mounting bracket o to the back of the positioner with hexagon bolts circlip and washers 4 see Fig 163 o The selection of the M8 thread used on the positioner depends on the size of the actuator To determine the correct position hold the positioner with mounting bracket on the actuator The conical roller on the lever of the position measuring system in the hoop must be able to run freely on the drive over the entire stroke range At 50 stroke the lever position should be approximately horizontal see chapter 14 2 4 Aligning lever mechanism Fig 16 Attaching mounting bracket Attaching the positioner with mounting bracket for actuators with cast frame
38. Bmw roang smati udar ss Fig 113 ScreenShot PROFIBUS Pull the slave Type 8792 8793 onto the bus line with drag and drop 10 Stato 1 Configuration 0693 EV Ww q x C 5605 ei C Weitere FELDGERATE MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 G E A Enw Kong Isi ric dmi n n y s Fig 114 ScreenShot position controller 190 Pull the modules PDI POS and PDO CMD SP into the slave Type 8792 8793 with drag and drop Type 8792 8793 PROFIBUS DP FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 35 2 Example 2 of a process controller Type 8793 Transfer of several process values i BI SIMA TIC PC osse Fran SP zi bracken Sie F1 um Hille na erhalten And Maar 2 6 73 uns izm r C Fig 115 ScreenShot PROFIBUS Pull the slave Type 8792 8793 onto the bus line vvith drag and drop SM VE m Gy 9205 si C Weteie FELDGERATE vo Type 0630 DPI 6692 663 PORPOS POLONO Foi SP PDI TEMP POIMODE POLERA POLPCOMact PDO CHD SP PDO MDOE POQ PCON act zi EZ Dr dlen Sie F1 um erhalten Andi dese AE A dern iyo cost tsi CIVI DUE Fig 116 ScreenShot process controller Pull the modules into the slave Type 8792 8793 with drag and drop 191
39. DP Fig 108 Connection PROFIBUS DP position controller Typ 8792 30 2 Connection diagram Type 8793 Function earth FE M12 5 pole plug inversely coded PROFIBUS DP Function earth FE M12 8 pole plug M12 5 pole socket inversely coded PROFIBUS DP Fig 109 Connection PROFIBUS DP process controller Typ 8793 M12 5 pole plug inversely coded PROFIBUS DP 179 burkert FLUID CONTROL SYSTEMS Type 8792 8793 PROFIBUS DP MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 180 30 3 Operating voltage M12 8 pole connector Configuration External circuit Signal level not used not used GND 24V Binary input Binary input Binary output 1 referring to Pin 3 Binary output 2 referring to Pin 3 24VDC 10 A max residual ripple 10 Table 43 Pin assignment operating voltage M12 8 pole circular connector PROFIBUS DP 30 4 Bus connection socket connector M12 5 pole Pin 1 Configuration External circuit Signal level 1 VP 5 2 RxD TxD N 3 DGND 4 RxD TxD P 5 Shielding Supply the terminating resistors Received transmitted data N A line Data transmission potential earth to 5 V Received transmitted data P B line Shielding protective earth Table 44 Pin assignment bus connection M12 5 pole circular socket connector PROFIBUS DP Type
40. Initiator 2 ki Input for process N 24 V PNP NO ie actual value Tal 06 S 14 20 Eee frequency Analogue feedback a 57 2 4 20 mA N 0 10V 7 j 24 V DC Note Optional inputs and outputs are illustrated by dotted lines Fig 7 Interfaces of the positioner The positioners Type 8792 and Type 8793 are 3 wire devices i e the power 24 V DC is supplied separately from the set point value signal only for process controller Type 8793 English Types 8792 8793 Description of Systerm burkert FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 10 10 1 TECHNICAL DATA pneumatic auxiliary povver Safety positions after failure of the electrical or n single acting actuators the safety position depends on the fluid connection of the drive to the vvorking connec tions A1 or A2 see Fig 8 and Fig 9 Actuator system down down up down Eu x Designation single acting Control function A single acting control function B double acting Control function Safety positions after failure of the auxiliary electrical Connection according to Fig 8 down power pneumatic Connection according to Fig 9 up Connection according to Fig 8 up down up Connection according to Fig 9 down down up
41. MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 45 2 Adjustment Rules according to Chien Hrones and Reswick Actuating Variable Jump Method With this method the controller parameters are adjusted on the basis of the transient behaviour of the controlled system An actuating variable jump of 100 is output The times Tu and Tg are derived from the progress of the actual value of the control variable Progress of the control variable following an actuating variable jump AY Actuating variable Y Actual value Ks AY Control variable Fig 124 Progress of the control variable actuating variable jump Procedure Switch controller to MANUAL MANU operating state Output the actuating variable jump and record control variable with a recorder If progresses are critical e g danger of overheating switch off promptly Note that in thermally slow systems the actual value of the control variable may continue to rise after the controller has been switched off In the following Table 60 the adjustment values have been specified for the controller parameters depending on Tu Tg and Ks for reference and disturbance reaction as well as for an aperiodic control process and a control process with a 20 overshoot They apply to controlled systems with P behaviour with dead time and with a delay of the first order 215 Type 8792 8793 burkert FLUID CONTROL SYSTEMS Ad
42. On the display the last digit of the value is highlighted with a dark background Press the up arrow key to specify the value of the individual digit Press the down arrow key lt to switch to the next digit When all input values have been specified confirm the values by pressing the right selection key Ok The menu then jumps back to the selection screen copy FACT USER _ Resetting the settings under CAL USER to the factory settings In the CAL USER menu select the copy FACT USER menu option using the arrow keys and confirm with the selection key on the right ENTER Hold down the selection key on the right RUN for approx 3 seconds until the countdown has elapsed 165 8792 8793 burkert FLUID CONTROL SYSTEMS Start up operation process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 166 Type 8792 8793 burkert FLUID CONTROL SYSTEMS Operating structure of the positioner CONTENTS 25 OPERATING STRUCTURE POSITIONER usssoennenseoeunnesseonnuesssennunssnenunessenennssssennanesoenununsenennnussennnnssesennanssnenunensenennn 168 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 167 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Operating structure of the positioner 25 OPERATING STRUCTURE POSITIONER DOUBLE 4 20mA
43. POS or of the set point value CMD of the process actual value PV or of the process set point value SP can be transmitted to the control centre via the analogue output OUT ANALOG Output of the current position Output of the position set point value Output of the process actual value Output of the process set point value 4 20mA 0 20mA O selection of the V 0 10V O unit signal 0 5V O Fig 95 Operating structure OUTPUT ANALOG process controller type Type 8793 Changed values are not transferred into the memory EEPROM until the main menu MAIN is left OUT BIN1 Configuring the binary output 1 OUT BIN2 Configuring the binary output 2 Only for the versions one analogue output and two binary outputs two binary outputs The following description is valid for both binary outputs OUT BIN 1 and OUT BIN 2 as the operation in the menu is identical The binary outputs 1 and 2 can be used for one of the following outputs Alarm output for excessively large control deviations of the position controller for the output of the current position with respect to a specified limit position gt or lt Type 8792 8793 hl burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 for the output actuator in safety position for the output sensor brea
44. SP SP 4mA 0 SP 20 mA 0 PV 4mA 0 PV 20 mA SP 20 mA 0 calibr PV PV 4mA 0 PV 20 mA 0 calibr PV copyFACT gt USER 4 Countdown SET FACTORY Factory reset MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Fig 105 Operating structure 6 1 only process controller 8793 2 only position controller 8792 3 The signal type is displayed which is selected in the INPUT menu 4 only 8793 only for external set point value default RCONTROL SETUP SP INPUT external 5 only 8793 only for signal type 4 20 mA 6 only 8793 only for circuit with PT 100 173 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Operating structure of the positioner SER NO BAUD RATE 1 7 0 MODE RS232 HART NONE par 1 Stop EVEN par 1 Stop ODD par 1Stop Mu EVEN par 2Stop ODD par 2Stop EXTRAS DISPLAY invers SERVICE MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Fig 106 Operating structure 7 174 Type 8792 8793 burkert FLUID CONTROL SYSTEMS PROFIBUS DP CONTENTS 26 GENERAL 10 176 27 TECHNICAL DATA a a adi daadaa aiai 17
45. Settings of the serial interface This function can be used to set the type of the serial interface and the baud rate SERO MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Fig 66 BAUD RATE 200 4860 960 O 79200 38400 10 RS232 HART a B V O CD ENTER 7 CD A ODD par 1Stop Y NONE par 2Stop CD Operating structure SER I O 119 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 120 21 3 19 EXTRAS This function can be used to set the representation on the display Black font on light EXTRAS DISPLAY background White font on dark background Fig 67 Operating structure EXTRAS 21 3 20 POS SENSOR The remote model of the process controller type 8793 can be connected to the path sensor by means of different interfaces the position controller type 8792 remote model with digital interface only The POS SENSOR menu option does not appear in the ADD FUNCTION selection menu unless a process controller type 8793 is a remote model If the ANALOG interface setting is selected the positioner can be operated as a position controller only and no longer as a process controller The P CONTROL menu option is remo
46. Specifies the D contribution of the PID controller Factory setting 0 0 s x A Adjustment range m 00 ox 221 9 o79999s Fig 73 Operating structure PCONTROL TV f the sub menu is left by pressing the selection key on the left ESC the value remains unchanged 129 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 130 5 XO Working point of the process controller Operating point of the proportional part when control difference 0 Factory setting 0 0 Adjustment range 0 0 0061 0 10096 Fig 74 Operating structure PCONTROL XO an In the section Tables for customer specific settings in chapter Table for Your Settings on the Process Controller 8793 there is a table in which you can enter your parameters 6 Filter Filtering of the process actual value input The filter is valid for all process actual value types and has a low pass behaviour PT1 Factory setting O en FILTER ok Adjustment range x a 7 Fig 75 Operating structure PCONTROL FILTER Setting the filter effect in 10 stages Corresponds to limit frequency Hz a FE EEE EEE Lowest fter effect 59 ST 2 Largest filter effect Table 35 Setting the filter effect If the sub menu is left by pressing the
47. Specify the basic settings on the positioner for ACTUATOR and X TUNE an Specification of the basic settings is described in the chapter entitled Start up and operation of the position controller Type 8792 19 5 Specifying the standard settings Implement the settings in the BUS COMM menu option The procedure is described in the following chapter 31 1 BUS COMM Description of menu Operating state MEN approx 3 ar AUTOMATIC AGTUATOR SINGLE 1 l DOUBLE O MANUAL BUS COMM X TUNE MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 ADD FUNCTION CHARACT M CU DEE CO Fm ne 182 Fig 110 Operating structure basic settings PROFIBUS DP Type 8792 8793 E PROFIBUS DP burkert MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 31 1 BUS COMM Description of menu 31 1 1 BUS COMM Operating structure position controller BUS COMM Address X Address XXX BUS FAIL SafePos off O SafePos on Position B M Temperature Operation mod Errors Y NO OO X BUS PDO 2 Eror reset O Fig 111 Operating structure BUS COMM position controller 8792 183 Type 8792 8793 burkert PROFIBUS DP 31 1 2 BUS COMM Operating structure process controller BUS COMM Address X Address XXX BUS FAIL SafePos off
48. Type 8792 8793 PROFIBUS DP burkert FLUID CONTROL SYSTEMS 6002 60 L0 ueqebebie peseejeJ 1H smeIs v uoisjeA NI 2268110001 NYIN 192 Type 8792 8793 burkert FLUID CONTROL SYSTEMS Servicing and Troubleshooting the Position Controller Type 8792 CONTENTS 36 MAIN ENAN CE 194 37 ERROR MESSAGES AND 35 2 194 37 1 Error Messages on the Display z n n s da an 194 37 1 1 General Error Messages tt tette didt i nita d c 194 37 1 2 Error and warning messages while the X TUNE function is running 195 37 2 Other faults U RR 195 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 193 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Servicing and Troubleshooting the Position Controller Type 8792 36 MAINTENANCE The positioner Type 8792 is maintenance free when operated according to the instructions in this manual 37 ERROR MESSAGES AND MALFUNCTIONS 37 1 Error Messages on the Display 37 1 1 General Error Messages EFE Minimum input value has been reached Do not reduce value further A Maximum input value has been reached Do not increase value further CMD error Signal error Check signal Set point v
49. actual value The position of the decimal point The values for the lower and upper process actual value If the settings for the unit of the process actual value or the position of the decimal point are input or changed this setting applies to all scaling values SPmin SPmax PVmin PVmax 131 burkert FLUID CONTROL SYSTEMS Start up operation Type 8792 8793 process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 132 Procedure for setting the scaling values Inputting the unit and the position of the decimal point for the scaling values possible in PVmin only Using the arrow keys select the PV SCALE menu option and confirm by pressing the right selection key ENTER Press the right selection key INPUT to switch to the input screen for PVmin On the display the field for the unit has a dark background and is therefore marked Press the up arrow key to select the unit bar mbar F for the scaling values The units indicated here depend on the signal type PV INPUT Press the down arrow key lt to change the dark highlighted background to the decimal point of the value Press the up arrow key to specify the position of the decimal point Inputting the scaling value Press the down arrow key lt to change the dark highlighted background to the last digit of the value Press the
50. air supply Continuous valve with single acting actuator Positioner type 8792 8793 Position set oint value p p Position controller Actual position Process set point value Nominal position Process Position controller measuring Process system actual value Sensor Control system 1 Aeration valve 2 Bleed valve Fig 2 Structure positioner type 8792 8793 The remote design has the position measuring system situated outside the positioner directly on the pro portional valve and is connected to the latter by a cable 21 English burkert Types 8792 8793 FLUID CONTROL SYSTEMS Descri ption of System T TYPE 8792 WITH POSITION CONTROLLER FUNCTION The position measuring system records the current position POS ofthe pneumatic actuator The position controller compares this actual position value with the set point value CMD which is specified as a norm signal If there is a control difference Xd1 the actuator is aerated and deaerated via the control system In this way the position of the actuator is changed until control difference is 0 Z1 represents a disturbance variable Valve opening Position set point value Position Control system Continuous controller Solenoid valves valve Fig 8 Position control circuit in Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 22
51. can be specified within the main menu If required extend the main menu with auxiliary menu functions which you can then specify 21 2 1 Switching between process operating level and configuration level left selection key 53s MENU Process operating level Configuration level MANUAL AUTOMATIC Basic Additional functions functions left selection key EXIT Fig 35 Operating levels To activate the Configuration menu on the Process operating level hold down the left selection key MENU for approx 3 seconds Countdown two bars converge on the display 21 2 2 Including auxiliary functions in the main menu n the main menu press the arrow keys to select the ADD FUNCTION menu option and press the selection key on the right ENTER to enter the submenu Press the arrow keys to select the required auxiliary function Press the selection key on the right ENTER to mark the auxiliary function with a cross x Press the selection key on the left EXIT to transfer the marked functions into the main menu In the main menu now input the parameters for the auxiliary functions 91 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 92 21 2 3 Removing auxiliary functions from the main menu If a func
52. information FLUID CONTROL SYSTEMS 45 ADJUSTMENT RULES FOR PID CONTROLLERS The control system 8793 features a self optimization function for the structure and parameters of the integrated process controller The determined PID parameters can be seen via the operating menu and re optimized at will for an empirical path The regulatory literature includes a series of adjustment rules which can be used in experimental ways to determine a favourable setting for the controller parameters To avoid incorrect settings always observe the conditions under which the particular adjustment rules have been drawn up Apart from the properties of the control process and the controller itself the aspect whether a change in the disturbance variable or command variable is to be corrected plays a role 45 1 Adjustment Rules according to Ziegler and Nichols Oscillation Method With this method the controller parameters are adjusted on the basis of the behaviour of the control circuit at the stability limit The controller parameters are first adjusted so that the control circuit starts to oscillate The occurring critical characteristic values suggest a favourable adjustment of the controller parameters A prerequisite for the application of this method of course is that the control circuit is oscillated Procedure Set controller as P controller i e Tn 999 Tv 0 first select a low value for Kp Set required set point value Increase
53. or in the case of overlapping set point value ranges simultane ously as actuators SPLTRNG 0 Min Qol Min 0001 2 nput the minimum value of 9 G va Le os the input signal as Adjustment range O 75 96 Input the maximum value of Max 10096 the input signal as oo 100 00 Adjustment range 25 100 96 If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged Fig 49 Operating structure SPLTRNG Changed values are not transferred into the memory EEPROM until the main menu MAIN is left Type 8792 8793 b Hr u urkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Splitting a unit signal range into two set point value ranges Valve stroke POS Set point value mA 16 18 20 NP Set point value range Set point value range Position controller 1 Position controller 2 Fig 50 SPLTRNG graph 103 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 104 21 3 8 X LIMIT Limits the mechanical stroke range This auxiliary function limits the physical stroke to specified values minimum and maximum In doing so the stroke r
54. select the FREE sub menu option using the arrow keys and confirm by pressing the selection key on the right SELEC Another sub menu FREE opens in which the individual nodes are listed as Select the individual nodes using the arrow keys and confirm by pressing the selection key on the right INPUT in order to change the value in the SET VALUE sub menu Previously set value as 96 SETVALUE y 0 5 0 0 This value as is changed with the arrovv keys oo Return without change HESS NE REESE Sl Accept the set value 2447 Fig 41 Display CHARACT FREE Using the arrow keys set the function value from 0 to 100 and confirm by pressing the selection key on the right OK When all changes have been made leave the sub menu by pressing the selection key on the left EXIT Press the selection key on the left again EXIT to return to the CHARACT menu option o Changed values are not transferred into the memory EEPROM until the main menu MAIN is left 97 position controller Type 8792 Type 8792 8793 Start up operation Unit signal ee FLUID CONTROL SYSTEMS s o X o o o gt Example of a programmed characteristic mable Characteristic there is a table in which you can enter your settings for the freely programmable In the section Tables for customer specific settings in chapter Settings
55. selection key on the right ENTER Accept the minimum position Press the arrow keys to mark the POS lower X menu option and confirm with the selection key on the right SELEC Approach the minimum position of the valve using the arrow keys OPN CLS and confirm this value by pressing the selection key on the right OK Accept the maximum position Press the arrow keys to mark the POS upper X menu option and confirm with the selection key on the right SELEC Approach the maximum position of the valve using the arrow keys OPN CLS and confirm this value by pressing the selection key on the right OK calibr INP Calibrating the position set point value 4 20 mA 0 20 mA 5 V 0 10 V In the CAL USER menu press the arrow keys to select the calibr INP and confirm with the selection key on the right ENTER Accept the minimum input signal 0 mA 4 mA O V Using the arrow keys select the NP 0 mA 4 mA O V menu option and confirm with the selection key on the right INPUT Specify the minimum value of the unit signal at the input and confirm this value with the selection key on the right OK Accept the maximum input signal 20 mA 5 V 10 V Using the arrow keys select the NP 20 mA 5 V 10 V menu option and confirm with the selection key on the right INPUT Specify the maximum value of the unit signal at the input and confirm this value with the sele
56. selection key on the left ESC the value remains unchanged Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 22 7 2 2 SETUP Setting up the process controller These functions specify the type of control PV INPUT Indication of the signal type for the process actual value The PV INPUT function specifies the signal type of the process actual value Unit signal 4 20mA Flovv rate pressure level Frequency signal 0 1000 Hz Flovv Circuit with PT 100 20 C 220 C temperature Factory setting 4 20 mA When the operating voltage is switched on the device searches for excluded sensor types automatic sensor detection When a sensor type is detected Pt100 or 4 20 mA the signal type is automatically implemented in the PV INPUT operating menu The frequency signal of the signal type cannot be detected automatically but must be set manually in the PV INPUT operating menu 4 20 mA Unit signal 4 20 mA flow rate pressure level PV INPUT F O Frequency signal flow rate 0 1000 Hz CD PT 100 O Circuit with PT 100 temperature 20 C 220 C Fig 76 Operating structure P CONTROL PV INPUT PV Scale Scaling of the process actual value The PV SCALE function specifies the following settings The unit of the process
57. sensor Connect compressed air to positioner Connect positioner pneumatically to the actuator Switch on power supply to the positioner Run the X TUNE function 57 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Installation 14 4 3 Connection and start up via a 4 20 mA path sensor for type 8793 remote model only When a 4 20 mA path sensor is connected the process controller type 8793 can be used as a position controller only as the process actual value input is used as input for the path sensor In principle any path sensor with a 4 20 mA output can be connected which has an adequate resolution of the path signal Good control properties are obtained if the resolution of the path sensor allows at least 1000 measuring steps over the path to be measured Example Path sensor with 150 mm measurement range Of which used measurement range stroke 100 mm Required minimum resolution of the sensor 100 mm 1000 Steps 0 1 mm WARNING Risk of injury from improper start up Start up may be carried out by authorised technicians only and with the appropriate tools Risk of injury from unintentional activation of the system and an uncontrolled restart Secure system from unintentional activation Following assembly ensure a controlled restart Connect 4 20 mA path sensor to the terminals 1 4 of the process controller type 8793 remote model see chap
58. the OUT BIN type menu option input the required switching status normally open normally closed see Table 423 OUT BIN1 2 normally open normally closed AUTOMATIC operating state OV o 24V o MANUAL operating state 24V OV o o Normally open output in switched state high 24 V Normally closed output in switched state low V Table 42 witching status OUT BIN MANUAL AUTOMATIC process controller Type 8793 only possible if signal level fault detection activated see chapter 24 4 SIG ERROR Configuration of signal level fault detection 161 burkert FLUID CONTROL SYSTEMS Start up operation Type 8792 8793 process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 162 24 6 CAL USER Calibrating the actual value display and the inputs for the process values The following points can be manually calibrated with this function Position display POS 0 100 Process set point value display SP Process actual value display PV CAL USER calibr POS POS lower 0F om o m POS lovver 0 CLS POS upper Ol Cory AI POS upper 0 calibr SP ISP 4mA ar SP 20 Cox SP 20 mA calibr SP D Calbration of signal type 4 20 mA amp 2 Ca ibration of circuit with Pt 100 Press forapprox
59. the operating voltage is applied the positioner is operating and is in the AUTOMATIC operating state 18 3 Specifying the standard settings The basic settings of the positioner are implemented at the factory Before the positioner can undergo a function check the unit input signal standard signal must still be set following installation of the device and the X TUNE function run to adjust the device to local conditions To specify the basic settings switch from the process operating level to the configuration level MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Hold down the left selection key MENU for approx 3 seconds countdown two bars converge on the display Then the main menu MAIN is indicated on the display together with the menu options which can be individually marked via the arrow keys and then selected via the right selection key ENTER see Fig 28 Operating module Specifying the Basic Settings 72 Type 8792 8793 Initial start u p FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Display 0 0 1 5 50 91 8 ed aa R O Description of the key configuration Right selection key Down arrow key Up arrow key left selection key Fig 28 Operating module Specifying the Basic Settings The overview of the operating structure for the basic settings is illustrat
60. to the connection cable part no 919067 available as an accessory Table 17 Pin assignment output signals to the control centre M12 8 pole plug MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 62 Type 8792 8793 burkert Installation FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 16 2 3 Output signals to the control centre e g PLC MS 4 pole socket for binary outputs option only Pin 1 Configuration External circuit Signal level 1 Binary output 1 1 0 0 24V 2 Binary output 2 2 0 0 24V 3 Binary output GND 3 0 GND Table 18 Pin assignment output signals to the control centre M8 4 pole plug 16 2 4 Operating voltage M12 8 pole circular connector Wire colour 1 Configuration External circuit Signal level green GND 3 24 V DC 10 yellow 424 V C max residual ripple 10 The indicated wire colours refer to the connection cable part no 919067 available as an accessory Table 19 Pin assignment operating voltage M12 8 pole circular connector When the power supply voltage is applied the positioner is operating Now make the required basic settings and actuate the automatic adjustment of the positioner The procedure is described in chapter Initial start up and chapter Starting up and adjusting the process controller 63 burkert
61. type PV INPUT frequency The PV SCALE function specifies the following settings for frequency input signal type The unit of the process actual value The position of the decimal point The values for the lower and upper process actual value The K factor If the settings for the unit of the process actual value or the position of the decimal point are input or changed this setting applies to all scaling values PVmin PVmax SPmin SPmax PV SCALE V PVmin oon gt E me V r r n t A V PVmin 0 0 PVmax 100 0 Cox 1 CD TEACH IN If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged Fig 79 Operating structure P CONTROL PV SCALE Frequency Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Specifying the settings PVmin XXx Lower scaling value for the process actual value 1 Select the unit for the flow rate The unit on the display has a dark background Press the up arrow key to select from the following units l s l min l h m3 min m3 h UG s gal US s UG min gal US min UG h gal US h IG s gal Imperial s IG min gal Imperial min IG h gal Imperial h 2 Input the position of the decimal point Press the down arrow key to hi
62. upper scaling value for the process actual value the value is assigned to 20 mA If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged This setting specifies the reference range for the dead band of the process controller as well as for the analogue feedback of the process actual value option Fig 77 Operating structure P CONTROL PV SCALE 4 20 mA Scaling example of the 4 20 mA input Process actual value from the transmitter 4 20 mA corresponds to 0 10 l min Process set point value from PLC 4 20 mA corresponds to 8 l min Scaling value Process actual value l mn N E Example of inputting scaling values Variant 1 Variant 2 Variant 3 Process set PVmin 0 0 0 point value PVmax 1 0 10 0 100 0 SPmin 0 0 0 nput signal SPmax 10 8 8 0 mA Fig 78 Scaling example For SP INPUT internal set point value default via the arrow keys the scaling of the set point value via SPmin and SPmax is not possible The set point value can be input directly according to the scaled process variable PVmin PVmax 133 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 134 8b PV SCALE PV SCALE 2 Scaling of the process actual value for frequency input signal
63. 0 0 PV SCALE PVmax 100 0 P CO INIT bunpless Types 8792 8793 bu rkert Description of Systerm FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 10 3 Specifications of the Positioner 10 3 1 Operating Conditions NOTE If used outside the device may be exposed to direct sunlight and temperature fluctuations which may cause malfunctions or leaks If the device is used outdoors do not expose it unprotected to the weather conditions Ensure that the permitted ambient temperature does not exceed the maximum value or drop below the minimum value Environmental temperature 0 60 C Protection class IP 65 IP 67 according to EN 60529 only if cables plugs and sockets have been connected correctly If the positioner is used under IP 67 conditions the ventilation filter see Fig 1 Structure positioner type 8792 8793 must be removed and the exhaust air conducted into the dry area 10 3 2 Conformity CE mark conforms to EMC Directive 2004 108 EC until now 89 336 EMC only if cables plugs and sockets have been connected correctly 10 3 3 Mechanical data Dimensions See data sheet Material Housing material Plastic coated aluminium Other external parts Stainless steel V4A PC PE POM PTFE Sealing material EPDM NBR FKM Mass approx 1 0 kg 10 3 4 Electrical data Connections 2 cable bushings M20 x 1 5 with screw type terminal
64. 09 142 22 7 4 P TUNE Self optimization of the process controller process tune The control system of the type 8793 has an integrated PID process controller When an appropriate sensor is connected any process variable such as flow rate temperature pressure etc can be controlled To obtain a good control performance the structure and parameterization of the controller must be adjusted to the properties of the process controlled system This task requires experience in control technology as well as in measurement aids and is time consuming Therefore the control system of type 8793 features the PTUNE self optimization function which determines the structure and parameters of the process controller at the press of a button The determined PID parameters can be seen via the operating menu and modified at will 22 7 4 1 Operating mode When the PTUNE function runs the process is automatically identified To do this the process is initiated with a defined disturbance variable Characteristic process parameters are derived from the response signal and are the basis for determining the structure and parameters of the process controller If the PTUNE self optimization is used optimum results are obtained based on the following requirements Stable or stationary conditions with reference to the process actual value PV when PTUNE starts Implementation of the P TUNE in the operating point or in the operating range of the process
65. 09 Packaging Storage Disposal CONTENTS 40 PACKAGING AND TRANSPORT ie A a im uiu a ada 204 41 STORAGE SEIN 204 42 DISPOSAL D DA DD Q D M s 2 S sszusisvssssseznsessr sanan ar n ayama ea nennen 204 203 burkert FLUID CONTROL SYSTEMS Packaging Storage Disposal Type 8792 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 204 40 PACKAGING AND TRANSPORT NOTE Transport damages Inadequately protected equipment may be damaged during transport During transportation protect the device against wet and dirt in shock resistant packaging Avoid exceeding or dropping below the allowable storage temperature 41 STORAGE NOTE Incorrect storage may damage the device Store the device in a dry and dust free location Storage temperature 20 65 C 42 DISPOSAL Dispose of the device and packaging in an environmentally friendly manner NOTE Damage to the environment caused by device components contaminated with media Observe applicable disposal regulations and environmental regulations Observe national waste disposal regulations Type 8792 8793 burkert FLUID CONTROL SYSTEMS Additional technical information CONTENTS 43 SELECTION CRITERIA FOR CONTINUOUS 5
66. 1 inverted input in reverse order input current lt 6 mA Quality classes in accordance with DIN ISO 8573 1 Class 5 max particle size 40 um max particle density 10 mg m Class 3 max pressure dew point 20 C or min 10 degrees below the lowest operating temperature Class 5 max 25 mg m 0 60 C 1 4 7 bar 951 min at 1 4 bar for aeration and deaeration 1501 min at 6 bar for aeration and deaeration 1001 min according to definition for pressure drop from 7 to 6 bar absolute Internal thread G1 4 Pressure specifications Overpressure with respect to atmospheric pressure English Type 8792 8793 burkert FLUID CONTROL SYSTEMS Control and display elements operating modes CONTENTS 11 CONTROL AND DISPLAY ELEMENTS 0 sssssssssssssssssssnessnssonesoneesnssonesssssnnecnssosseoneesisonseesessnesonstonesonsenssonneenssonseomesnsesen 36 11 1 Control and display elements of the positioner unranenneonneennnunnennnzenrunnnennnunnnennnunnennnnunnunnnennennnnennnnnnnnnnnnnnenn 36 11 2 Configuration of the KEYS iiinn z daa a a az a az aa ia iz SRM RE ai d zsl ib izisin i 37 11 3 Information on the display nn naar AR nn nennen 38 12 Ra a a a ada aaa M 39 rp mel cedri 39 12 2 AUTOMATIC Opera
67. 1 bar pressure loss on the valve according to the definition of the k value Po 1000 kg m density of water according to the definition of the k value Ap pressure loss on the valve bar p density of the medium kg m3 b The pressure values known at the input and output of the entire equipment p and p represent the required maximum flow rate Qa which is to be reached ist step Calculate the flow coefficient of the entire equipment k according to equation 1 Vges MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 2nd step Determine the flow rate through the equipment without the continuous valve e g by short circuiting the line at the installation location of the continuous valve 3rd step Calculate the flow coefficient of the equipment without the continuous valve k according to equation 1 4th step Calculate the required k value of the continuous valve according to equation 2 206 Type 8792 8793 burkert Additional technical information FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 The ks value of the continuous valve should have at least the value which is calculated according to equation 1 or 2 vvhich is appropriate to the application hovvever it should never be far above the calcu lated value The rule of thumb slightly higher is never harmful often used for svvitch
68. 2 4 Setting numerical values tttm tnter tii tret init nna a tala dnt tenian 92 21 2 5 Principle of including auxiliary functions in the main menu 93 21 3 Auxiliary functions aaa aaa a uiae s nen cR ERR adaya daa zay aaa en 94 21 3 1 Overview of auxiliary functions for the position controller Type 8792 sss 94 21 3 2 CHARACT Select the transfer characteristic between input signal position set point Wall UG and stoki ese eiecit te SSS 95 21 3 3 Inputting the freely programmable characteristic s s n 96 21 3 4 CUTOFF Sealing function for the position controller type Type 8792 99 21 3 5 DIR CMD Effective sense direction of the position controller set point value 100 2 21 3 6 DIR ACT Effective sense direction of the actuator driv 101 2 21 3 7 SPLTRNG Signal tentent trente tentat 102 E 21 3 8 X LIMIT Limits the mechanical stroke range 104 t 21 3 9 X LIMIT Limiting the control 105 5 21 3 10 X CONTROL Parameterization of the position controller sse 106 E 21 3 11 SECURITY Code protection for the settings 107 21 3 12 SA
69. 6 28 SAFETY SETTINGS IF THE BUS FAILS 177 29 E I 177 30 ELECTRICAL CONNECTIONS as aan s d bi Ead Gardarai laaan 178 5 30 1 Connection diagram Type 8792 issiga 179 30 2 Connection diagram Type 8793 2 179 30 3 Operating voltage M12 8 pole connector nnusuunenneonnsenneunnennnunnsunnsennzunnnensunnnnnnnunnnennnunnnnnnnnnnunnnennnunnnenneunn 180 30 4 Bus connection socket connector M12 5 pole aussssennennenneunnunaunaennsunnunrunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnunnnnnnnnnnene 180 8 30 5 Process actual value M8 circular connector Type 8793 oniy 181 C o o 31 SETTINGS ON THE 55 5 182 3 31 1 BUS COMM Description Of mend tsi na iratus cesare nnnunnannnnnonnonnoneonnoroenssnnnennensennnnnnnnnnnnnnn 183 2 31 1 1 BUS COMM Operating structure position controller n l n n 183 m 31 1 2 BUS COMM Operating structure process controller sse
70. 792 8793 can be mounted on different proportional valves For example on valves with piston membrane or rotary actuator The actuators can be single acting or double acting For single acting actuators only one chamber is aerated and deaerated during actuation The generated pressure works against a spring The piston moves until there is an equilibrium of forces between compressive force and spring force To do this one of the two air connections must be sealed with a threaded plug For double acting actuators the chambers on both sides of the piston are pressurised In this case one chamber is aerated when the other one is deaerated and vice versa In this design no spring is installed in the actuator Two basic device versions are offered for the positioner Type 8792 8793 they differ in the attachment option and in the position measuring system Device version 1 An internal position measuring system is used which is designed as a rotary potentiometer The positioner is attached directly to the actuator Device version 2 An external position measuring system linear or rotative via a digital interface The positioner is attached to a wall either with a DIN rail or with a mounting bracket remote design 17 English burkert FLUID CONTROL SYSTEMS Descri ption of System Types 8792 8793 5 1 3 Overview of the mounting options Mounting on swivel drive Mounting with mounting bracket on a push act
71. 8792 8793 PROFIBUS DP burkert FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 30 5 Process actual value M8 circular connector Type 8793 only 4 20mA 24 V transmitter supply internally supplied Output from transmitter GND LE TI Bridge after GND GND from 3 conductor transmitter Svvitch on left 4 20 mA not used externally supplied EL EH Switch on right Process actual not used Process actual Frequency 24 V sensor supply eed Clock input Ci Clock input GND Switch on left not used Frequency not used externally supplied E EH Switch on right Clock input Clock input not used Pt 100 not used see information below E HH Process actual 1 power supply Process actual 3 GND 77 z rig Process actual 2 compensation 24V Clock Clock Clock Clock Can be adjusted via software see chapter 18 3 Specifying the standard settings The switch is located under the screw connection see Fig 109 Connection PROFIBUS DP process controller Typ 8793 Table 45 Plug assignments of the process actual value input M8 circular plug Connect the Pt 100 sensor via 3 cables for cable compensation reasons It is essential to bridge Pin 3 and Pin 4 on the sensor 181 I Type 8792 8793 burkert PROFIBUS DP 31 SETTINGS ON THE POSITIONER
72. 98 Type 8792 8793 burkert Servicing and Troubleshooting the FLUID CONTROL SYSTEMS Process Controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 39 1 2 Error and warning messages while the X TUNE function is running X TUNE locked The X TUNE function is blocked X TUNE No compressed air connected Connect compressed air ERROR 1 X TUNE Compressed air failed during Autotune Check compressed air supply ERROR 2 X TUNE Actuator or control system deaeration Not possible device defective ERROR 3 side leaking X TUNE Control system aeration side leaking Not possible device defective ERROR 4 X TUNE The slewing range of the position Correct attachment of the position measuring ERROR 5 measuring system is exceeded by 120 system shaft on the actuator see chapter 14 2 and 14 3 X TUNE The end positions for POS MIN and Check compressed air supply ERROR 6 POS MAX are too close together X TUNE Incorrect assignment POS MIN and To determine POS MIN and POS MAX move ERROR 7 POS MAX the actuator in the direction indicated on the display X TUNE Potentiometer is not coupled optimally Set middle position as described in chapter WARNING 1 to the actuator 14 2 4 Aligning lever mechanism An optimum connection can provide a more accurate position measurement Warning information gives tips on optimized operation The device is operational even if this warn
73. Attach mounting bracket to the cast frame with one or more hexagon bolts 8 washers 4 and circlips see Fig 173 g gt d Fig 17 Attach positioner with mounting bracket for actuators with cast frame 54 burkert FLUID CONTROL SYSTEMS Installation Type 8792 8793 Attaching the positioner with mounting bracket for actuators with columnar yoke Attach mounting bracket to the columnar yoke with the U bolt washers circlips and hexagon nuts see Fig 183 Fig 18 Attach positioner vvith mounting bracket for actuators vvith cast frame 14 2 4 Aligning lever mechanism The lever mechanism cannot be correctly aligned until the device has been connected electrically and pneumatically Move the actuator in manual mode to half stroke according to the scale on the actuator Adjust the height of the positioner until the lever is horizontal Fix the positioner in this position on the actuator MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 52 Type 8792 8793 burkert Installation FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 14 3 Attachment to a proportional valve with swivel actuator The axle of the position measuring system integrated in the positioner is connected directly to the axle of the swivel actuator 14 3 1 Mounting k
74. CURITY Code protection for the settings Use the SECURITY function to prevent the positioner or individual functions from being accessed unintentionally Factory setting Access Code 0000 If the code protection is activated the code set access code or master code must be input whenever operator action is disabled an All operator actions can be implemented with the non changeable master code This 4 digit master code can be found in the appendix of these operating instructions in the chapter entitled Master code SET VALUE SECURITY 1 Access Code 1 0009 Fig 91 Operating structure SECURITY process controller Input screen for inputting or changing the access code for description of input see below Blocking access to the configuration level Blocking switchover between the MANUAL AUTOMATIC MANU AUTO operating states 4 Blocking the input of auxiliary function Blocking the activation of self parameterization Autotune Blocking the activation of the linearization of the process characteristic Inputting the access code To access the input screen with marked selection menu CODE press the selection key on the right INPUT Type 8792 8793 Start up operation process controller Type 8793 burkert FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 SET VALUE Access Code 1 Down arrow key lt o
75. Description of the control module MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 36 The positioner features a 4 key control panel and a 128x64 dot matrix graphics display as a display element Type 8792 8793 burkert Control and display elements FLUID CONTROL SYSTEMS operating modes MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 11 2 Configuration of the keys The assignment of the 4 keys on the control panel differs depending on the operating status AUTOMATIC MANUAL or operating level Operate process Parameterization and Configuration of the positioner The configuration of the keys is represented in the lovver grey bar on the display panel process Parameterization and Configuration can be found in the chapters entitled 72 Operating modes and 13 Operating levels Configuration indicated in the lower bar Operating status Operating level Up down arrow Change the display AUTOMATIC Operate process key e g POS CMD TEMP OPN CLS OPEN CLOSE MANUAL Operate process manual opening and closing of the actuator Scroll up and down the menus AUTOMATIC or MANUAL Parameterization or Configuration and AUTOMATIC or MANUAL increase or reduce numerical values Parameterization or Configuration and AUTOMATIC or MANUAL adiust numerical values by individual digits Parameterization or Configu
76. EXIT to transfer the marked functions into the main menu In the main menu now input the parameters for the auxiliary functions 24 1 2 Removing auxiliary functions from the main menu If a function is removed from the main menu the settings implemented previously under this function become invalid again In the main menu press the arrow keys to select the ADD FUNCTION menu option and press the selection key on the right ENTER to enter the submenu Using the arrow keys select an auxiliary function indicated with a cross x Press the selection key on the right ENTER to remove the cross x After pressing the selection key on the left EXIT the auxiliary function is deactivated and removed from the main menu How to operate the auxiliary functions is described exactly in the chapter entitled Start up and operation of the position controller Type 8792 21 Configuring the auxiliary functions 151 burkert FLUID CONTROL SYSTEMS Start up operation Type 8792 8793 process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 152 24 2 CUTOFF Sealing function for the position controller Type 8793 This function causes the valve to be sealed outside the control area This is where you input the limits for the position set point value CMD as a percentage or for the process set point value SP as a percentage of the scaling
77. FEPOS Input the safety nennen nnns 108 3 21 3 13 SIG ERROR Configuration of signal level fault detection 109 z 21 3 14 BINARY IN Activation of the binary input tentent tentent tnntnnas 110 2 21 3 15 OUTPUT option Configuring the outputs nnne 111 lt 21 3 16 CAL USER Calibrating the actual value display and the inputs for the position set point 3 CC mp T 116 gt z 21 3 17 SET FACTORY Resetting to the factory settings 118 x 21 3 18 SER NO Settings of the serial interface sse tents 119 21 3 1 edna LA iz 120 s 21 3 20 POS SENSOR ec or eun nannten snas UL De s 120 21 2 21 SERVIGE iiie nam el 120 78 Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 19 STARTING UP AND ADJUSTING THE POSITION CONTROLLER 19 1 Safety instructions N DANGER Risk of injury from high pressure in the equipment Before loosening the lines and valves turn off the pressure and vent the lines WARNING Risk of injury from improper start up Start up may be carried out by authorised technicians only and with the appropriate tools Risk of inju
78. FLUID CONTROL SYSTEMS operating modes MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 13 OPERATING LEVELS The menu structure in the control module of the positioner contains 2 operating levels Level 1 Operate process Operating mode AUTOMATIC gt Process Input data displayed MANUAL gt Actuator opened and closed manually Level 2 Parameterization and Configuration Input operating parameters Supplement the menu with optional menu options 13 1 Switching between the operating levels If AUTOMATIC operating mode has been set when switching from level 1 Operate process to level 2 Parameterization and Configuration the process continues running while positioner settings are imple mented on level 2 To switch from level 1 Operate process to level 2 Parameterise press the left selection key MENU for approx 3 seconds During these 3 seconds Countdown 2 bars converge see Fig 12 To switch back from level 2 Parameterise and Configure to level 1 Operate process press the left selection key EXIT Switch to level 2 Parameterization Switch back to level 1 Operate process burkert I IE INPUT X TUNE ADD FUNCTION EXIT 1 ENTER Selection key 2 bars Press selection key on left press for which converge on left approx 3 seconds Countdown Fig 12 witch operating level 43 burkert FLUID CONTROL SYSTEMS Co
79. Kp until the control variable initiates an undamped continuous oscillation The proportionality coefficient amplification factor set at the stability limit is designated as K The resulting oscil lation duration is designated as T Progress of the control variable at the stability limit Actual value MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Fig 128 Progress of the control variable PID 213 burkert FLUID CONTROL SYSTEMS Type 8792 8793 Additional technical information MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 214 The controller parameters can then be calculated from K and T according to the following table Adjustment of the parameters according to Ziegler and Nichols Controller type Adjustment of the parameters P controller 0 5 PI controller 0 45K Tn 0 85T PID controller 0 6 0 5 Tv 0 12 Table 59 Adjustment of the parameters according to Ziegler and Nichols The adjustment rules of Ziegler and Nichols have been determined for P controlled systems with a time delay of the first order and dead time However they apply only to controllers with a disturbance reaction and not to those with a reference reaction Type 8792 8793 burkert Additional technical information FLUID CONTROL SYSTEMS
80. L released freigegeben printed 01 09 2009 14 Types 8792 8793 bu rkert FLUID CONTROL SYSTEMS Description of System CONTENTS 5 DESCRIPTION AND FEATURES 5 rares intet 16 5 1 General PIITedQgeiapemeteet ce 16 Bills ce ien etm acida ente isis esee eoe e tree tis 16 5 1 2 Combination with valve types and mounting versions 5 1 3 Overview of the mounting OPTIONS eerie ttntenttn tente ntnn tente tette tttt tenta ttnt tan 5 2 Designs 19 5 2 1 Type 8792 positioner with position control function seen 19 o 5 2 2 Type 8798 positioner with process control function sse 19 S 8 6 STRUCTURE OF THE YORAR YER Ra YY saaana 20 6 1 20 amp 6 2 Function 21 6 2 1 Diagram illustrating single acting actuator sse tentent tentent ttn 21 E 7 TYPE 8792 WITH POSITION CONTROLLER FUNCTION ssssssssssssssssssssssssssssussessnseessesseeessssuiesssssueesesaneessesaneetes 22 E 7 1 Schematic representation of the position c
81. L SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 14 ATTACHMENT AND ASSEMBLY The dimensions of the positioner and the different device versions can be found on the data sheet 14 1 Safety Instructions WARNING Risk of injury from improper installation Installation may be carried out by authorised technicians only and with the appropriate tools Risk of injury from unintentional activation of the system and an uncontrolled restart Secure system from unintentional activation Following assembly ensure a controlled restart 47 burkert FLUID CONTROL SYSTEMS Type 8792 8793 Installation MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 48 14 2 Attachment to a proportional valve with push drives according to NAMUR The valve position is transferred to the position measuring system installed in the positioner via a lever according to NAMUR 14 2 1 Attachment kit for push drives serial no 787 215 Can be purchased as an accessory from B rkert Pusu osasy ume 1 Ti NAMURmouning racket EO S08 a r p asm 571 5 Jona o r NAMUR ever for stoke ange 3 2 mm m NAR ror ste age a oe p s s s 14 la mborpnssns o o 2 o s omone UT fe mo Table
82. MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 burkert FLUID CONTROL SYSTEMS Type 8792 8793 Positioner Electropneumatic positioner Operating Instructions MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 VVe reserve the right to make technical changes vvithout notice Technische Anderungen vorbehalten Sous res rve de modification techniques 2009 B rkert Werke GmbH amp Co KG Operating Instructions 0908 01 EN en 00806089 Type 8792 8793 burkert Contents FLUID CONTROL SYSTEMS Positioner Typ 8792 8793 TABLE OF CONTENTS GENERAL INFORMATION AND SAFETY 5 72 7 1 Operating dayaz ns sa E Sha su qazaba ubud z y aisababb d 8 2 Price ee 9 3 Basic Safety Instructions aa d s a as aaa ya d asian 10 4 General InfOrMation 2 s 12 DESCRIPTION OF SYSTEM tnter csetera cena R a aa a s Ya a TARDA RAYA aaia 15 5 Description and features of the 16 R 6 Structure OF the posiliorier 5o RUR e ILE 20 2 7 Type 8792 wit
83. Operating structure PCONTROL Legend Insensitivity range dead band of the PID process controller Amplification factor of the process controller Reset time Hold back time Working point Filtering of the process actual value input 0 6 9 Specification of the signal type for process actual value Ga Scaling the process controller for signal type 4 20 mA D Scaling the process controller for frequency input signal type C Scaling the process controller for selection of the Pt 100 input 9 Type of set point value default internal or external Scaling of the position controller for external set point default value only Enables a smooth switchover between AUTOMATIC and MANUAL mode 22 7 2 1 Parameters Setting parameters for the process controller These positioner functions are used to manually set the control parameters of the process controller The setting can be implemented automatically by means of the PTUNE function see chapter 22 7 4 127 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 128 AN The basic principles of setting a controller can be found under Additional technical information in chapter Properties of PID Controllers DBND Insensitivity area dead band of the process controller This function causes the process controller t
84. Selection of the set point value defaults Automatic sensor detection or manual sensor Sensor types Pt100 and 4 20 mA are automatically setting detected or can be set manually via the operating menu P CONTROL SETUP PV INPUT Selection of the nominal value specification Set point value specification either via uniform signal input Process characteristic linearization PQ LIN characteristics Process controller optimization PTUNE troller parameters Table 5 Properties of the process controller software Properties of process controller Hierarchical control concept for easy control on the following levels Process control On this level switch between AUTOMATIC and MANUAL mode Configuration and Parameterization On this level specify certain basic functions during start up and if required configure additional functions Table 6 Properties of the process controller software Hierarchical control concept MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 29 English burkert Types 8792 8793 FLUID CONTROL SYSTEMS Descri ption of System MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 30 9 INTERFACES OF THE POSITIONER Inputs for position or s process set point value 2 binary outputs M 4 20 mA 2 24 V PNP 0 20 mA Positioner l 2 0 10V r N N zu Initiator 1
85. T Operating state END approx 3s AUTOMATIC o ENTED or INPUT MANUAL mo M 6 ED EEPROM CUTOFF L SERIE x eh ADD FUNCTION is not required for the initial start up Fig 30 Operating structure Basic settings Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 19 6 2 Inputting the input signal INPUT Selected unit input signal Under this menu option input the unit signal used for the set point value 4 20 mA Current 4 20 mA 1 0 20 Current 20 mA Voltage 10 V Voltage 0 5 V Fig 31 Operating structure INPUT 19 6 3 Automatic adjustment autotune of the position controller X TUNE Autotune for position controller AN WARNING Uncontrolled valve movements while the X TUNE function is running While this function is running the valve automatically moves from its current position Never run X TUNE while a process is running Take appropriate measures to prevent the equipment from being unintentionally actuated NOTE An incorrect supply pressure or incorrectly connected operating medium pressure may cause the con troller to be wrongly adjusted X TUNE at the supply pressure available during subsequent operation pneumatic auxiliary energy Run the X TUNE fun
86. YSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 8c PV SCALE Scaling of the process actual value for selection of the PT 100 input PV INPUT PT 100 The PV SCALE function specifies the following settings for the PT 100 signal type The unit of the process actual value Position of the decimal point The values for the lower and upper process actual value If the settings for the unit of the process actual value or the position of the decimal point are input or changed this setting applies to all scaling values PVmin PVmax SPmin SPmax PV SCALE x LA PVmax 100 0 C PVmax 100 0 2119 TEE tH If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged Fig 80 Operating structure P CONTROL PV SCALE PT100 Specifying the settings s PVmin X X Lower scaling value for the process actual value 1 Select the unit for the temperature The unit on the display is highlighted with a dark background Press the up arrow key to select from the fol lowing units C or F 2 Input the position of the decimal point Press the down arrow key to highlight the decimal point with a dark background Press the up arrow key to specify the position Adjustment range 1 or 2 3 Input the lower scaling value for the process actual value Press the down arrow key to highlight
87. aa n 198 39 1 2 Error and warning messages while the X TUNE function is running 199 39 1 3 Error Messages while the P QLIN Function is Running 200 39 1 4 Error Messages while the P TUNE Function is Running s n 200 39 1 5 Error Messages on Field Bus Devices sse 201 X euc 202 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 197 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Servicing and Troubleshooting the Process Controller Type 8793 38 MAINTENANCE The positioner Type 8793 is maintenance free when operated according to the instructions in this manual 39 ERROR MESSAGES AND MALFUNCTIONS 39 1 Error Messages on the Display 39 1 1 General Error Messages A Minimum input value has been reached Do not reduce value further A Maximum input value has been reached Do not increase value further CMD error Signal error Check signal bu um SP error Signal error Check signal EE EIN PV error Signal error Check signal re PT100 error Signal error Check signal Actual value Pt 100 EEPROM fault EEPROM defective Not possible device defective MFI fault Field bus board defective Table 52 General error message process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 1
88. aa senan 80 19 5 Specifying the standard 5 1 05 81 19 6 Description of the basic functions in the main menu 82 19 6 1 Main menu of the 2 82 8 19 6 2 Inputting the input signal 83 8 19 6 3 Automatic adjustment autotune of the position controller sss 83 19 6 4 Adding auxiliary furictions ii trt i sete e rt 84 S gt 19 6 5 Leaving the main men tnter aniidae raanda 84 3 20 OPERATING THE POSITION 1 3 3 85 3 20 1 Switching between the operating states 5 85 z 20 2 Switching between the operating levels unanenneenneennnunnennnzunnunnnenneunnnennunnnnnnnunnnennnunnnnnnnennnnnnnnnnunnnennnunnnnnnnunnenn 86 8 20 3 AUTOMATIC operating state neis aan 86 20 3 1 Meaning of the keys 86 5 20 3 2 Information on the
89. acteristic freely pro grammable via nodes O 5 0 0 A 5 5 5 0 J e e Em 100 gt 100 Input the nodes see Inputting the freely programmable characteristic Fig 39 Operating structure CHARACT The flow characteristic k f s indicates the flow rate of a valve expressed by the k value depending on the stroke s of the actuator spindle It is specified by the design of the valve seat and the seat seal In general two types of flow characteristics are implemented the linear and the equal percentage In the case of linear characteristics identical k value changes k are assigned to identical stroke changes ds dk ds In the case of an equal percentage characteristic an equal percentage change of the k value corresponds to a stroke change ds dk k n ds equalper The operating characteristic Q f s specifies the correlation between the volumetric flow Q in the installed valve and the stroke s This characteristic has the properties of the pipelines pumps and consumers It therefore exhibits a form which differs from the flow characteristic 95 burkert FLUID CONTROL SYSTEMS Start up operation position controller Type 8792 Type 8792 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 96 Standardised valve stroke POS Position set point value CMD Fig 40 Characteristics In the case of control tas
90. al level fault detection Activation of the binary input Configuration of the outputs only with auxiliary board for analogue feedback signal or binary outputs Calibration Reset to factory settings Configuration of serial interface Set colours on display For internal use only For type 8793 remote version only Setting of interface for remote path sensor Overview auxiliary functions position controller Type 8792 Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 21 3 2 CHARACT Select the transfer characteristic between input signal position set point value and stroke Characteristic customer specific characteristic Use this auxiliary function to select a transfer characteristic with reference to set point value nominal position CMD and valve stroke POS for correction of the flow rate or operating characteristic Factory setting inear CHARACT linear GP 1 25 Linear characteristic Equal percentage characteristic 1 25 GP 1 33 Equal percentage characteristic 1 33 GP 1 50 Equal percentage characteristic 1 50 GP 25 1 Inversely equal percentage characteristic 25 1 GP 33 1 Inversely equal percentage characteristic 33 1 GP 50 1 Inversely equal percentage characteristic 50 1 FREE O Or QOO 6 QD 19 xD re User defined char
91. alue position controller EEPROM fault EEPROM defective Not possible device defective MFI fault Field bus board defective Table 49 General error message position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 194 Type 8792 8793 burkert Servicing andi Troubleshooting the FLUID CONTROL SYSTEMS Position Controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 37 1 2 Error and warning messages while the X TUNE function is running X TUNE locked The X TUNE function is blocked X TUNE No compressed air connected Connect compressed air ERROR 1 X TUNE ompressed air failed during Autotune Check compressed air supply ERROR 2 X TUNE Actuator or control system deaeration Not possible device defective ERROR 3 side leaking X TUNE Control system aeration side leaking Not possible device defective ERROR 4 X TUNE The slewing range of the position Correct attachment of the position ERROR 5 measuring system is exceeded by 120 measuring system shaft on the actuator see chapter 14 2 and 14 3 X TUNE The end positions for POS MIN and Check compressed air supply ERROR 6 POS MAX are too close together X TUNE Incorrect assignment POS MIN and To determine POS MIN and POS MAX move ERROR 7 POS MAX the actuator in the direction indicated on the display X TUNE Potentiometer is not coupled optimally
92. ange of the limited stroke is set equal to 100 If the limited stroke range is left during operation negative POS values or POS values greater than 100 are indicated Factory setting Min 0 Max 100 Input the initial value of the X LIMIT 1 stroke range as Adjustment range 50 of the total stroke Input the final value of the stroke range as Max 100 Adjustment range 50 10090 of the E total stroke The minimum gap between Min and Maxis 5096 If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged Fig 51 Operating structure X LIMIT Changed values are not transferred into the memory EEPROM until the main menu MAIN is left Limited stroke 00 Physical stroke 96 POS POS o o Unlimited stroke Limited stroke Control range in AUTO Adjustment range in MANUAL mode MATIC mode f 20 Set point value mA INPUT Fig 52 X L M T graph Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 21 3 9 X LIMIT Limiting the control speed Use this auxiliary function to specify the opening and closing times for the entire stroke and limit the control speeds When the X 7UNE function is running the minimum opening and closing time for the entire strok
93. ark background Press the up arrow key to set the value Adjustment range O 9999 TEACH IN Teach in function Calculating the K factor by measuring a specific flow rate Hold down the selection key on the right ENTER for approx 3 s t isplay countdown on display 135 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 136 When this menu is entered the valve is closed in order to have a defined initial state for implementation of the Teach in function Starting the measurement Press the selection key on the right START to start the measurement the message Teach in at work is dis played briefly The valve is opened and the container is filled gt fill is indicated on the display Ending the measurement Press the selection key on the right STOP to end the measurement and to display the input screen for the volume Input the position of the decimal point The decimal point on the display is highlighted with a dark background Press the up arrow key to specify the position Input the measured volume Press the down arrow key to highlight the individual digits with a dark background Press the up arrow key to set the value Adjustment range 0 9999 Type 8792 8793 burkert Start up operation FLUID CONTROL S
94. arts the program which automatically determines the nodes for a correction characteristic Start the routine to linearise the process characteristic by selecting the P Q L N menu option in the main menu and press the selection key on the right RUN for approx 3 seconds countdown The program goes through the valve stroke in 20 steps from O to 100 and measures the associated process variable The value pairs of the correction characteristic are placed as a freely programmable characteristic under the CHARACT FREE menu option and can be viewed under this menu option If the CHARACT menu option under the ADDFUNCTION menu option was not transferred into the main menu the transfer occurs automatically when the P Q L N function is implemented At the same time the CHARACT FREE menu option is activated Displays on the panel during selection and implementation of the routine Q LIN 0 Display of the node which is just being started CMD 0 progress is indicated by a bar running along the upper edge of the display Q LIN 1 CMD 10 Q LIN 10 CMD 100 Q LIN ready Display at the end of the routine or Q LIN err break Display if an error occurs Table 36 Display for PQ LIN Linearization of the process characteristic 141 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 20
95. astissonicestcutdeneduancd ao Aai daadaa aiiai 204 ADDITIONAL TECHNICAL INFORMATION ssssssssssssssssssssssessssssueeessnsnessesaneesessauieesssssneseesanseessessneessessueeeeesnanesseeaueneseeasiess 205 43 Selection criteria for continuous valves 206 44 Properties of PID Controllers 2an022eunn2ennennnunnnunanunnnunnennnnunnunnnnnnnunnnennnnnnnnnnnnnnunnnunnnnnnnennnnnnnnnnnnnnennnennnunnnennnunn 208 Type 8792 8793 Conte nts FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 45 Adjustment rules for PID 5 5 213 TABLES FOR CUSTOMER SPECIFIC 5 5 217 46 Table for Your Settings on the Position Controller 218 47 Table for Your Settings on the Process Controller 8793 5 5 219 MASTER CODE T 221 48 Master COL Ann 222 Type 8792 8793 Contents 6002 60 L0 ueqebebie peseejeJ 1H smeIs v uoisjeA NI 2268110001 NYIN Type 8792 8793 burkert FLUID CONTROL SYSTEMS
96. ate low V Table 32 Switching status OUT BIN POS gt LIM position controller type Type 8792 Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 OUT Safepos Output of message Actuator in safety position Press the arrow keys to mark the OUT Safepos menu option and confirm with the selection key on the right SELEC In the OUT BIN type menu option input the required switching status normally open normally closed see Table 33 OUT ERR SP CMD Output broken sensor Press the arrow keys to mark the OUT ERR SP CMD menu option and confirm with the selection key on the right SELEC In the OUT BIN1 2 type menu option input the required switching status normally open normally closed see Table 33 OUT remote Output operating state AUTOMATIC MANUAL Press the arrow keys to mark the OUT remote menu option and confirm with the selection key on the right SELEC In the OUT BIN1 2 type menu option input the required switching status normally open normally closed see Table 33 OUT BIN1 2 normally open normally closed AUTOMATIC operating state OV o 24V MANUAL operating state 24V o OV o Normally open output in switched state high 24 V Normally closed output in switched state low
97. by possibly activated split range function or Ud 0 0 9 J correction characteristic MENU POS TEMP MANU 0 100 0 nternal temperature in the housing of the positioner TEMP 20 0 leco MENU CMD INPUT Input signal for nominal position INPUT 20 0 5 10 V or 0 4 20 mA MENU TEMP POS f Table 11 Automatic Operating State for Type 8792 Type 8792 8793 burkert Control and display elements FLUID CONTROL SYSTEMS operating modes MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 12 3 AUTOMATIC Operating State for Type 8793 Bar runs along the upper edge of the display from left to right Normal control mode is implemented and monitored in AUTOMATIC operating state If the PCONTROL additional function is activated for Type 8793 it is possible to switch between the following states in AUTOMATIC operating state Display of actual position of the valve actuator O O 0 100 Display of nominal position of the valve actuator or O 2 0 Display of nominal position of the valve actuator after rescaling by possibly activated split range function or correction characteristic l MENU TEMP MANU 0 100 nternal temperature in the housing of the positioner TEMP he 20 0 MENU CMD PV i 0 0 MENU TEMP SP MANU 0 0 MENU INPUT Process actual value Process set point value Display of proc
98. by the positioner to the controller master Position CMD Process value Setpoint Temperature Operation mode Errors PCONTRL active Press the selection button on the right ENTER to activate x or deactivate the particular process value Meaning of the process values see Table 46 Process Data Input PROFIBUS DP BUS PDO Selection of the process values which are to be transferred by the controller master to the positioner CMD Setpoint Operation mode Error reset P CONTRL active Press the selection button on the right ENTER to activate x or deactivate the particular process value Meaning of the process values see Table 47 Process Data Output PROFIBUS DP only for type 8793 and when process controller activated only for type 8793 185 ular au Type 8792 8793 burkert PROFIBUS DP 32 FUNCTIONAL DEVIATIONS FROM THE STANDARD MODEL It is possible to switch between the MANUAL and AUTOMATIC operating states on the process operating level either via the keyboard on the positioner or via the bus It is no longer possible to switch between MANUAL AUTOMATIC on the keyboard if an operating mode under PDO MODE is transferred to the positioner via the bus MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 186 Type 8792 8793 hi PROFIBUS DP burkert MAN 1000118577 EN Version A Status RL released freigegeben
99. control 22 7 4 2 Operation The P TUNE function can be run when the process controller is either in automatic or manual mode When P TUNE ends the control system is in the operating mode which was set previously The procedures described in the following sections a and b are not mandatory requirements for running the P TUNE function However they increase the quality of the result a P TUNE in manual mode The operator is on the process operating level Press the arrow keys to display the process value PV Switch the control system to manual mode by pressing the right key HAND The requirements mentioned in the previous chapter to obtain optimum results are set in the following Way Manually open or close the control valve by pressing the OPEN CLOSE arrow keys and move the process value up to the required operating point or operating range As soon as the obtained setting is temporally constant start the P TUNE function see chapter 22 7 4 3 Start the PTUNE function Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 b P TUNE in automatic mode The operator is on the process operating level Specify a process set point value SP via the keyboard or via the analog set point value input In doing so observe the setting for the internal or external set po
100. ction key on the right OK MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 copy FACT gt USER Resetting the settings under CAL USER to the factory settings In the CAL USER menu select the copy FACT USER menu option using the arrow keys and confirm with the selection key on the right ENTER Hold down the selection key on the right RUN for approx 3 seconds until the countdown has elapsed 117 m Type 8792 8793 burkert FLUID CONTROL SYSTEMS Start up operation position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 118 21 3 17 SET FACTORY Resetting to the factory settings This function allows all settings implemented by the user to be reset to the delivery status All EEPROM parameters with the exception of the calibration values are reset to default values Then a hardware reset is implemented press for approx 3 s SET FACTORY l PP Fig 65 Operating structure SET FACTORY To activate the SET FACTORY function hold down the selection key on the right RUN for approx 8 s until the countdovvn has elapsed To adjust the positioner to the operating parameters re implement self parameterization of the position controller X TUNE Type 8792 8793 Start up operation position controller Type 8792 burkert FLUID CONTROL SYSTEMS 21 3 18 SER NO
101. ction preferably without operating medium pressure to exclude interference caused by flow forces The following functions are actuated automatically Adjustment of the sensor signal to the physical stroke of the actuator used Determination of parameters for the PWM signals to control the solenoid valves integrated in the positioner Adjustment of the controller parameters for the position controller Optimization occurs according to the criteria of a shortest possible correction time with a simultaneous freedom from overshoot Start Autotune by selecting X TUNE in the main menu MAIN using the arrow keys Then hold down the right selection key RUN for approx 3 seconds countdown on display 83 burkert FLUID CONTROL SYSTEMS Start up operation Type 8792 8793 position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 84 When the automatic adjustment completes the message X TUNE READY is indicated If an error occurs the TUNE err break message is indicated To return to the main menu press any key To stop X TUNE press the left or right selection key STOP Sequence for automatic adjustment of the position controller to the particular operating conditions X TUNE Start of X TUNE started TUNE 0 Display of the X TUNE phase which is currently running Init progress is indicated by a progress bar along the upper edg
102. d PV Input is identical and is described in the diagram below A SP CMD Input ERROR off Signal fault detection inactive PV Input ai TN B ey input AJL ERROR on Signal fault detection active y ex SAFEPOS Activate approach of safety position only possible if ERROR on is selected in the Selection menu SafePos off Approach of the safety A position is not active V O Approach of the safety position is active Approach of the safety position which is saved in SAFEPOS Fig 93 Operating structure SIG ERROR Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 If signal fault detection is activated the respective fault is indicated on the display see chapter Error Messages on the Display Safety position SAFEPOS on When SAFEPOS on is set the following configurations may occur Active menu option SAFEPOS f a fault is detected the actuator moves to the lower SAFEPOS set position Inactive menu option SAFEPOS If a fault is detected the actuator moves to the end position which the actuator would specify in the isolated state 24 5 OUTPUT option Configuring the outputs The OUTPUT menu option is only indicated in the selection menu of ADD FUNCTION if the positioner has outputs option The outputs can be used for the following feedback
103. d Type 8793 can be dangerous to people nearby equipment and the environment The device is designed for the open loop control and closed loop control of media The device must not be exposed to direct sunlight Pulsating direct voltage rectified alternating voltage without smoothing must not be used as power supply During use observe the permitted data the operating conditions and conditions of use specified in the con tract documents and operating instructions as described in chapter System Description Technical Data in this manual and in the valve manual for the respective pneumatically actuated valve The device may be used only in conjunction with third party devices and components recommended and authorised by Burkert In view of the wide range of possible application cases check whether the positioner is suitable for the spe cific application case and check this out if required Correct transportation correct storage and installation and careful use and maintenance are essential for reli able and faultless operation Use the positioner Type 8792 and Type 8793 only as intended 2 1 Restrictions If exporting the system device observe any existing restrictions 2 2 Predictable Misuse The positioners Type 8792 and Type 8793 must not be used in areas where there is a risk of explosion Do not supply the medium connectors of the system with aggressive or flammable mediums Do not supply the medium connecto
104. device Keep these instructions in a location which is easily accessible to every user and make these instructions available to every new owner of the device WARNING The operating instructions contain important safety information Failure to observe these instructions may result in hazardous situations The operating instructions must be read and understood 1 1 Symbols DANGER Warns of an immediate danger Failure to observe the warning may result in a fatal or serious injury WARNING Warns of a potentially dangerous situation Failure to observe the warning may result in serious injuries or death CAUTION Warns of a possible danger Failure to observe this warning may result in a medium or minor injury NOTE Warns of damage to property Failure to observe the warning may result in damage to the device or the equipment indicates important additional information tips and recommendations which are important for your safety and the flawless functioning of the device 2 EN a5 refers to information in these operating instructions or in other documentation gt designates a procedure that must be carried out Type 8792 8793 burkert General nformation FLUID CONTROL SYSTEMS Safety Instructions MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 2 AUTHORIZED USE ncorrect use of the positioner Type 8792 an
105. ditional technical information MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 216 Adjustment of the parameters according to Chien Hrones and Reswick Adjustment of the parameters Controller type for aperiodic control process for control process 0 overshoot with 20 overshoot Reference P controller PI controller Malfunction Tg Tu Ks Tg Tu Ks 0 3 Kp 0 6 Tn 4 Tu Tg Reference K p 0 7 K p 0 6 Tn Tg Tg Malfunction Tg Tu Ks Tg Tu Ks Tn 2 3 Tu K p 0 7 K p 0 7 Tg PID controller K p 0 95 K p 0 95 Kp 1 2 Tu Ks Tn 24 Tu Tu Ks Tnz1 35 Tg Tu Ks Tn 2 Tu Tv 0 42 Tu Tv 0 47 Tu Tv 0 42 Tu Table 60 Adjustment of the parameters according to Chien Hrones and Reswick The proportionality factor Ks of the controlled system is calculated as follows Ks AY 11 Type 8792 8793 burkert FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Tables for customer specific settings CONTENTS 46 TABLE FOR YOUR SETTINGS ON THE POSITION 5 26 218 46 1 Settings of the Freely Programmable Characteristic s ss s ssssssessessss ssns 218 47 TABLE FOR YOUR SETTINGS ON THE PROCESS CONTROLLER 8793
106. e controller set Reversal of the effective sense of direction of the set point value point value DIR CMD Safety position Definition of the safety position pwns Limiting the control speed Input of the opening and closing time for the entire stroke ue Peni DIR ACT aeration state of the actuator and the actual position Signal level error detection Check the input signals for sensor break SIG ERROR VVarning output on the display and start up of the safety position if selected Binary input Svvitch over AUTOMATIC MANUAL or Analogue feedback option Status signal set point or actual value ST rm 2 binary outputs option Output of tvvo selectable binary values P Temmi User calibration Change to the factory calibration of the signal input ease ene Table 2 Properties of the position controller software Position controller with additional function MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 24 English Types 8792 8793 Description of System FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Hierarchical control concept for easy control on the following levels Additional function Process control On this level switch between AUTOMATIC and MANUAL mode Configuration and Parameterization On this level specify certain basic functions during start up and if required configure additional functions
107. e is auto matically entered for Open and Close Therefore movement can be at maximum speed Factory setting values determined at the factory by the X TUNE If the control speed is limited values can be input for Open and Close which are between the minimum values determined by the X TUNE and 60 s Opening time for entire XTIME gt stroke in seconds Adjustment range 1 60 seconds Closing time for entire stroke in seconds Adjustment range 1 60 seconds If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged Fig 53 Operating structure X TIME Changed values are not transferred into the memory EEPROM until the main menu MAIN is left Effect of limiting the opening speed when there is a jump in the set point value Valve stroke POS CMD 100 Set point value Actual value Fig 54 graph 105 burkert FLUID CONTROL SYSTEMS Start up operation Type 8792 8793 position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 106 21 3 10 X CONTROL Parameterization of the position controller Use this function to set the parameters for the position controller dead band and amplification factors XCONTROL N Da gt CO m rel KXopn 0001 v KXcls 0001 If the sub menu is left by pressing the selection key on
108. e of the display TUNE 1 Max Pos TUNE 2 Min Pos X TUNE Display at the end of the X TUNE ready TUNE Display when a fault occurs err break Table 27 Automatic adjustment of the position controller 19 6 4 Adding auxiliary functions ADD FUNCTION With ADD FUNCTION auxiliary functions can be included in the main menu See chapter 21 Configuring the auxiliary functions Jump this menu option during the initial start up 19 6 5 Leaving the main menu To leave the main menu press the left selection key EXIT You have to leave the main menu by pressing the left selection button EXIT before the modified data is saved in the memory EEPROM During the save process the message SAVE EEPROM is indicated on the display When the main menu is left the device is back in the same operating state in which it was before the switchover to the main menu MANUAL or AUTOMATIC Type 8792 8793 b Hr TEE urkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 20 OPERATING THE POSITION CONTROLLER an A precise description of the control and display elements as well as the configuration of the keys can be a5 found in chapter 1 1 Control and display elements When the operating voltage has been switched on the positioner is at the process operating level in the AUTO MATIC operati
109. ed actual value Clock input GND Clock GND o z not used Process actual 4 20 mA Process actual GND not used Frequency not used externally Clock input supplied not used o 3 S 2 513 5 a amp 4 E 3 S 2 13 5 4 Clock input Pt 100 see information belovv not used Process actual 1 Povver supply Process actual 3 GND actual value Process actual 2 Compensation Can be adjusted via software see chapter Specifying the standard settings Table 25 Terminal assignments of the process actual value input Connect the Pt 100 sensor via 3 cables for cable compensation reasons It is essential to bridge Pin 3 and Pin 4 on the sensor 69 burkert FLUID CONTROL SYSTEMS Installation Type 8792 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 70 When the power supply voltage is applied the positioner is operating Now make the required basic settings and actuate the automatic adjustment of the positioner The procedure is described in chapter nitial start up and chapter Starting up and adjusting the position controller Type 8792 8793 FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Initial start up CONTENTS 18 INITIAL START UP 72 18 1 Safety instruc
110. ed in the following subchapter 78 3 3 in Fig 29 Operating structure Basic settings for intial start up 18 3 1 Setting the Input Signal Standard Signal Using the arrow keys mark the VPUT menu option in the main menu and then press the right selection key ENTER to enter the INPUT submenu Using the arrow keys select the input signal 4 20 mA 0 20 mA Press the right selection key SELEC to select the input signal dot is marked To leave the submenu press the left selection key EXIT To leave the main menu press the left selection key EXIT You have to leave the main menu by pressing the left selection button EXIT before the modified data is saved in the memory EEPROM During the save process the message SAVE EEPROM is indicated on the display 73 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Initial start u p 18 3 2 Running the Automatic Adjustment X TUNE An exact description of the X TUNE function can be found in the chapter entitled Start up and operation of the position controller Type 8792 N WARNING Uncontrolled valve movements while the X TUNE function is running While this function is running the valve automatically moves from its current position Never run X TUNE while a process is running Take appropriate measures to prevent the equipment from being unintentionally actuated NOTE An incorrect supply pressure or incorrectly co
111. efore has a favourable static behaviour On account of its final actuating speed control it operates slower than the P controller and has a tendency to oscillate It is therefore dynamically relatively unfavourable MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 209 burkert FLUID CONTROL SYSTEMS Additional technical information Type 8792 8793 44 3 D portion Function 4 4 6 dt Kd is the derivative action coeffficient The larger Kd is the greater the D effect is Characteristic and step response of the 1 portion of a PID controller Step response Ramp response Fig 119 Characteristic and step response of the D portion of a PID controller Properties A controller vvith a D portion responds to changes in the control variable and may therefore reduce any control dif ferences more quickly MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 210 Type 8792 8793 burkert Additional technical information FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 44 4 Superposition of P I and D Portions Function 1 dxd Y Kp Xd _ Xddt Kd gc n Where Kp Ti Tn and Kd Kp Tv the function of the PID controller is calculated according to the following equation d 8 Y Kp Xd Xddt Tv Tn Kp Proportional coefficie
112. er Type 8792 17 2 1 Input signals from the control centre e g PLC Terminal Configuration External circuit Signal level Set point value 11 0 0 4 20 mA or 0 5 10 V completely galvanically isolated Set point value GND GND 0 5V log 0 Binary input 00 log 1 specific to operating voltage GND ter minal GND Table 21 Terminal assignment input signals of the control centre 17 2 2 Output signals to the control centre e g PLC required for Analogue output and or Binary output option only Connect terminals according to the model options of the positioner Configuration External circuit Signal level Binary output 1 24 V 0 V NC NOspecific to oper ating voltage GND terminal GND Binary output 2 24 V 0 V NC NOspecific to oper ating voltage GND terminal GND Analogue feedback 0 4 20mAor0 5 10V completely galvanically isolated 32 Analogue feedback GND 32 0 GND Table 22 Terminal assignment output signals to the control centre 67 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Installation 17 2 3 Operating voltage Terminal Configuration External circuit Signal level 24V Operating voltage 94 V 24 VDC x 10 GND Operating voltage GND GND max residual ripple 10 Table 23 Pin assignment operating voltage M12 8 pole circular connector 17 2 4 Connecting t
113. ess actual value and set point value VENUE SP PU t Efe Table 12 Automatic Operating State for Type 8793 o If the CONTROL additional function is not active the displays are represented as under Type 8792 Here is indicated INPUT if the internal set point value default is selected PCONTROL SP INPUT internal MANU if the external set point value default is selected PCONTROL SP INPUT external 41 burkert FLUID CONTROL SYSTEMS Control and display elements Type 8792 8793 operating modes MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 42 12 4 MANUAL operating state no bar running along upper edge of display In MANUAL operating state the valve can be opened and closed manually via the arrow keys Meaning of the arrow keys in MANUAL operating state Press the up arrow key Aerate the actuator A Control function A SFA Valve opens Control function B SFB Valve closes Control function SFI Connection 2 1 aerated Press the down arrow key Deaerate the actuator NZ Control function A SFA Valve closes Control function B SFB Valve opens Control function SFI Connection 2 2 aerated Table 13 Meaning of the arrow keys in MANUAL operating state SFA Actuator spring force closing SFB Actuator spring force opening SFI Actuator double acting Type 8792 8793 Control and display elements
114. ety position for the output sensor break for the output operating state AUTOMATIC MANUAL Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 OUT DEVX Selection Alarm output for excessively large OUT BIN 2 control deviation of the position controller OUT POS O Output current position with respect to a specified limit position OUT Safepos O Output actuator in safety position O Output sensor break O Output operating state MANUAL AUTOMATIC Lim DEV X 1 0 Input the limit value for the permitted control deviation Adjustment range 1 50 Lim POS 0 Input the limit position Adjustment range 0 100 normally open 1 Selection of svvitching signal normally closed O If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged The permitted control deviation Lim DEV X XX must not be less than the dead band Fig 63 Operating structure OUTPUT BIN1 BIN2 position controller type Type 8792 Normally closed output in switched state ow 0 V Normally opened output in switched state high 24 V MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Changed values are not transferred into the memory EEPROM until the main menu MAIN is left burkert FLUID CONTROL SYSTEMS S
115. evice is controlled by four keys The 128x64 dot matrix graphics display enables you to display the set point or actual value and to configure and parameterize via menu functions Control system The control system consists of 2 solenoid valves and 4 diaphragm reinforcers In single acting actuators the working connection 2 must be sealed with a threaded plug Feedback optional The feedback is implemented either via 2 proximity switches initiators via binary outputs or via an output 4 20 mA 10 V When the valve reaches an upper or lower position this position can be relayed e g to a PLC via binary outputs The operator can change the initiators or limit positions via control lugs MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Pneumatic interfaces Internal thread G1 4 Electrical interfaces Multipole plug or cable gland Housing Plastic coated aluminium housing with hinged cover and captive screws Mounting on push actuator according to NAMUR recommendation DIN IEC 534 T6 or on swivel actuator according to VDI VDE 3845 16 English Types 8792 8793 bu rkert Description of Systerm FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Optional Remote version for DIN rail mounting or for mounting bracket 5 1 2 Combination with valve types and mounting versions The positioner Types 8
116. geben printed 01 09 2009 39 1 5 Error Messages on Field Bus Devices On DeviceNet Display Explanation Troubleshooting BUS offline offline Device is not connected to the bus the network access pro cedure duplicate MAC ID test duration approx 2 s has still not ended or device is only active network node is displayed approx every 3 seconds Baudrate correctly set across network Bus connection including plug assignment correct Power supply and bus connection of the other nodes correct BUS no online Device is connected correctly to the bus the network access connection procedure has ended without errors however there is no no connection to the established connection to the master is displayed approx master every 3 seconds BUS I O connection timeout An I O connection is in the TIME OUT state Nevv connection establishment by master ensure that 1 O is displayed approx data is transferred cyclically or if COS confirmed that corre every 3 seconds sponding Acknovvledge messages are sent by the master BUS critical err Critical bus error Other device vvith the same address in the netvvork or BUS TT OFF due to communication problems is displayed approx every 3 seconds Change address of the device and restart device Error analysis in the network with a bus monitor Table 56 Error message DeviceNet process controller 8793 On Profibus BUS offline Bus con
117. ghlight the decimal point with a dark background Press the up arrow key to specify the position 3 Input the lower scaling value for the process actual value Press the down arrow key to highlight the individual digits with a dark background Press the up arrow key to set the value Adjustment range O 9999 This setting specifies the reference range for the dead band of the process controller as well as for the analogue feedback of the process actual value option PVmax Xxlx Upper scaling value for the process actual value The unit for flow rate and the position for the decimal point is transferred from the inputs of the lower scaling value 1 Input the upper scaling value for the process actual value Press the down arrow key to highlight the individual digits with a dark background Press the up arrow key to set the value Adjustment range O 9999 This setting specifies the reference range for the dead band of the process controller as well as for the analogue feedback of the process actual value option SLVALUE X Manual input of the K factor for the flow sensor e g from the data sheet of the flow sensor 1 Input the position of the decimal point The decimal point on the display is highlighted with a dark background Press the up arrow key to set the position Adjustment range 1 or 2 2 Input the K factor Press the down arrow key lt to highlight the individual digits with a d
118. h position controller function 5 22 8 Type 8793 with process controller function ss sssssssssssesssssss ssss seansa ssaan 26 E 9 Interfaces OF The POSITIOMEN ee 30 10 Technical Dala eresse M S 31 s CONTROL AND DISPLAY ELEMENTS OPERATING 5 5 35 s 11 Control and display elements s ss ssssssssesssssssessse tatu tasto sy natas tomato 36 12 Operating m des UU adan m sas ai 39 5 13 Operating levels l a A a ER R a R R aa a baz i m d 43 gt 2 INSTALLATION 45 5 14 Attachment and assembly 5 eiiis d a aydi z a z az a aaa aydaa aa ad ncn EEG 47 B 15 Fluld connecton GM 59 z 16 Electrical connection multi pole plug 5 1 61 17 Electrical Connection Terminal Model for Cable Gland 66 INITIAL START UP e 71 OMEN 1 5 25
119. he aeration state of the actuator and the actual position POS Factory setting Rise Direct effective direction DIRACT deaerated gt aerated 100 O nverse effective direction deaerated gt 100 90 aerated 0 Fig 47 Operating structure DIR ACT If the Fa function is selected the description of the arrow keys on the display changes in the MANUAL operating state OPN gt CLS and CLS gt OPN Changed values are not transferred into the memory EEPROM until the main menu MAIN is left Actual position POS Aeration state deaerated aerated Fig 48 D IR ACT graph 101 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 102 21 3 7 SPLTRNG Signal split range Min and max values of the input signal as for which the valve runs through the entire stroke range Factory setting Min 0 100 o This function is effective only im Betrieb as a position controller Use this auxiliary function to limit the position set point value range of the positioner by specifying a minimum and a maximum value As a result it is possible to divide a utilised unit signal range 4 20 mA 20 mA 10 V or 5 V into several positioners without or with overlapping This allows several valves to be used alternately
120. he external position measuring system for remote model only Terminal Configuration External circuit Signal level St Supply sensor S Remote S Supply sensor S Sensor Serial interface A cable Typ 8798 Serial interface B cable Table 24 Terminal assignment external position measuring system When the power supply voltage is applied the positioner is operating Now make the required basic settings and actuate the automatic adjustment of the positioner The procedure is described in chapter nitial start up and chapter Starting up and adjusting the position controller MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 68 Type 8792 8793 burkert Installation FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 17 3 Terminal Assignment for Cable Gland Position Controller Type 8793 First connect the process controller as described in chapter 77 2 Terminal Assignment for Cable Gland Position Controller Type 8792 17 3 1 Terminal assignments of the process actual value input Input type Terminal Configuration External circuit 4 20 mA 24 V transmitter input internally supplied Output from transmitter Bridge after GND GND from 3 con ductor transmitter not used actual value Frequency 24 V sensor supply internally Clock input supplied not us
121. ing conditions 22 7 Setting up the process controller 22 7 1 P CONTROL Starting the auxiliary function an How to start the auxiliary functions is described in the chapter entitled Start up and operation of the position controller Type 8792 Configuring the auxiliary functions Press the left selection key MENU to switch to the configuration level in the main menu MAIN Using the arrow keys select the ADD FUNCTION menu option and confirm by pressing the right selection key ENTER Using the arrow keys select the CONTROL menu option and confirm by pressing the right selection key ENTER Press the left selection key EXIT to return to the main menu The main menu now contains the CONTROL P Q LIN and PTUNE auxiliary functions Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 22 7 2 P CONTROL Basic settings for the function ENTER ENTER eu mre o EP 1 00 O IN 9999 v o0 xo 0 096 Cem FILTER 01 ENTER are maa o Pv scALE 1 LsP NPUT 1 LSP_SCALE Cx The SP SCALE function is indicated if the external set point value default external menu option is activated under SP INPUT Fig 68
122. ing information is not observed Warning information is automatically hidden after several seconds Table 53 Error and warning message for X TUNE process controller 8793 199 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Servicing and Troubleshooting the Process Controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 200 39 1 3 Error Messages while the P QLIN Function is Running PQLIN No supply pressure connected Connect supply pressure ERROR 1 No change to process variable Check process and if required switch on pump or open the shut off valve Check process sensor PQLIN Current node of the valve stroke was ERROR 2 not reached as Supply pressure failed during Check supply pressure PQ LIN Autotune was not run Run Autotune Table 54 Error message on P Q LIN process controller 8793 39 1 4 Error Messages while the P TUNE Function is Running Display Causes of error Remedial action PTUNE No supply pressure connected Connect supply pressure ERROR 1 No change to process variable Check process and if required switch on pump or open the shut off valve Check process sensor Table 55 Error message on PTUNE process controller 8793 Type 8792 8793 burkert Servicing and Troubleshooting the FLUID CONTROL SYSTEMS Process Controller Type 8793 MAN 1000118577 EN Version A Status RL released freige
123. ing mode AUTO MANUAL XTUNE PQLIN PTUNE BUSSAFEPOS Identifier HEX 41 00 05 187 Type 8792 8793 burkert PROFIBUS DP MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 188 se O PDI ERR Error GSD file PDI ERR Indicates the number of the process value output which was not written The value is retained until it is deleted with PDO ERR HEX 14 PDO CMD SP 16 PDO MODE Identifier HEX 41 00 06 PDI 0 Position controller GSD file PDI PCONact 1 Process controller Identifier HEX 41 00 OA Table 46 Process Data Input PROFIBUS DP PDI PV and PDI SP can be selected for Type 8793 process controller only and are beneficial only when process controller activated PD PCONact can be selected for Type 8793 process controller only Then the process data output input PDO Process Data Output from the controller to the positioner PDO CMD for position controller Type 8792 Set point position input GSD file PDO CMD SP Set point value of position controller as o Value range 0 1000 Identifier HEX 81 40 14 If the value is too small or too large the last valid value is used and is indicated in ERR with HEX 14 for process controller Type 8793 Process set point value setpoint Set point value of process controller in physical unit as set in the menu PCO INP or PCO SCAL max value range 999
124. ing valves may greatly impair the control behaviour of continuous valvesl The upper limit for the k value of the continuous valve can be specified in practice via the so called valve authority Y Ap ve ku 3 2 kvs2 Ap Pressure drop over the fully opened valve Ap Pressure drop over the entire equipment If the valve authority Y lt 0 3 the continuous valve has been oversized When the continuous valve is fully open the flow resistance in this case is significantly less than the flow resistance of the remaining fluid components in the equipment This means that the valve position pre dominates in the operating characteristic in the lower opening range only For this reason the operating characteristic is highly deformed By selecting a progressive equal percentage transfer characteristic between position nominal value and valve stroke this can be partially compensated and the operating characteristic linearised within certain limits However the valve authority should be gt 0 1 even if a correction characteristic is used The control behaviour control quality transient time depends greatly on the working point if a correction characteristic is used 207 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Additional technical information 44 PROPERTIES OF PID CONTROLLERS A PID controller has a proportional an integral and a differential portion P and D portion 44 1 P
125. int value default The selected set point value SP should be near the future operating point According to the set point value default the process variable PV changes on the basis of the PID parameters preset at the factory To satisfy the requirements mentioned in the chapter for obtaining optimum results wait until the PV reaches a stable state When PV is oscillating permanently the preset value KP of the process controller should be reduced in the P CONTROL PARAMETER menu o To observe PV you can select the graphical display SP PW t by pressing the arrow keys As soon as the PV is temporally constant start the P TUNE function see the following chapter 22 7 4 3 Start the P TUNE fundtion WARNING Risk of injury due to uncontrolled process While the P TUNE function is running the control valve automatically changes the momentary degree of opening and engages in the current process Using suitable measures prevent the permitted process limits from being exceeded For example by an automatic emergency shutdown stopping the P TUNE function by pressing the STOP key press left or right key The operator is on the configuration and parameterization level In the main menu select the P TUNE function by pressing the arrow keys Hold down the right RUN key for approx 3 s countdown on display The P TUNE self optimization function runs according to the diagram indicated in the fo
126. into the memory EEPROM until the main menu MAIN is left Valve stroke Do Adjustable from 75 100 7 Set point value CMD L Adjustable from 0 2500 Fig 44 Graph CUTOFF Position controller type Type 8792 99 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 100 21 3 5 DIR CMD Effective sense direction of the position controller set point value Use this auxiliary function to set the effective sense of direction between the input signal INPUT and the nominal position CMD of the actuator Factory setting Rise Direct effective direction DIR CMD T e g 4 mA or 0 V 0 96 20 mA or 5 10 V gt 100 M O Inverse effective direction e g 4 mA or 0 V gt 100 20 mA or 5 10 V 0 Fig 45 Operating structure DIR CMD o Changed values are not transferred into the memory EEPROM until the main menu MAIN is left Nominal position CMD Input signal INPUT Fig 46 DIR CMD graph Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 21 3 6 DIR ACT Effective sense direction of the actuator driv Use this auxiliary function to set the effective sense of direction between t
127. it on swivel actuator part no 787338 Can be purchased as an accessory from B rkert Parno ovanti mme Setscrew DIN 913 M4 x 4 3 fa Cheese head screw DIN 933 M6 x 12 Circlip B6 Table 15 Mounting kit on swivel actuator Other accessories The mounting bracket with fastening screws in accordance with VDI VDE 3845 must be purchased from the manufacturer of the swivel actuator 14 3 2 Installation WARNING Risk of injury from improper installation Installation may be carried out by authorised technicians only and with the appropriate tools Risk of injury from unintentional activation of the system and an uncontrolled restart Secure system from unintentional activation Following assembly ensure a controlled restart Procedure Specify the attachment position of the positioner parallel to the actuator or rotated by 90 to the actuator Determine home position and direction of rotation of the actuator Connect adapter to the axle of the positioner and secure with 2 setscrews 53 burkert FLUID CONTROL SYSTEMS Type 8792 8793 Installation o Anti twist safeguard Note the flat side of the axle One of the setscrews must be situated on the flat side of the axle as an anti twist safeguard see Fig 19 Slewing range of the position measuring system The maximum slewing range of the position measuring system is 120 The axle of the posi
128. iting the control speed Parameterization of the position controller Parameterization of the PID process controller Code protection for settings Input the safety position Configuration of signal level fault detection Activation of the binary input Configuration of the outputs option only Caiibration Reset to factory settings Configuration of serial interface Set colours on display For internal use only SPLTRNG auxiliary function can only be selected if PCONTROL auxiliary function is inactive 150 Fig 88 Overview auxiliary functions Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 If the RCONTROL auxiliary function is active for the process controller Type 8793 the following auxiliary func tions differ from those described for the position controller Type 8792 highlighted in Fig 88 CUTOFF PCONTROL SECURITY SIG ERROR OUTPUT CAL USER 24 1 1 Including auxiliary functions in the main menu In the main menu press the arrow keys to select the ADD FUNCTION menu option and press the selection key on the right ENTER to enter the submenu Press the arrow keys to select the required auxiliary function Press the selection key on the right ENTER to mark the auxiliary function with a cross x Press the selection key on the left
129. k process set point value for the output sensor break process actual value for the output operating state AUTOMATIC MANUAL OUT BIN 1 Selection Alarm output for excessively large control OUT BIN 2 OUT DEVX deviation of the position controller OUT POS O Output current position with respect to a specified limit position OUT Safepos O Output actuator in safety position O Output sensor break process set point value OUTERR PV O Output sensor break process actual value O Output operating state MANUAL AUTOMATIC ER Ind Input the limit value for the Lim DEVX 1 0 permitted control deviation Adjustment range 1 50 Lim POS 006 Lim POS 0 nput the limit position Adjustment range 0 10096 7 OUT BIN 2 type Selection of switching signal normally closed If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged The permitted control deviation Lim DEV X XX must not be less than the dead band Fig 96 Operating structure OUTPUT BIN1 BIN2 process controller type Type 8793 Normally closed output in switched state ow 0 V Normally opened output in switched state high 24 V Changed values are not transferred into the memory EEPROM until the main menu MAIN is left kkk only possible if signal level fault detection activated see chapter 24 4 SIG ERROR Configuration
130. ks for closed loop control systems it is usually particular demands which are placed on the course of the operating characteristic e g linearity For this reason it is occasionally necessary to correct the course of the operating characteristic in a suitable way For this purpose the positioner features a transfer element which implements different characteristics These are used to correct the operating characteristic Equal percentage characteristics 1 25 1 33 1 50 25 1 33 1 and 50 1 and a linear characteristic can be set Furthermore a characteristic can be freely programmed via nodes or automatically calibrated 21 3 3 Inputting the freely programmable characteristic The characteristic is defined via 21 nodes which are distributed uniformly via the position set point values ranging from O 100 Their distance is 5 A freely selectable stroke adjustment range 0 100 is assigned to each node The difference between the stroke values of two adjacent nodes must not be larger than 2000 100 gt 100001 If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged Fig 12 Operating structure CHARACT FREE Type 8792 8793 Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Procedure To input the characteristic points function values
131. l up select Increment increase numerical values V Scroll down select Decrement reduce numerical values Press the key inilemeu in the ADD FUNCTION menu Selection key on Retrieve the selected menu option to Select a menu option in the auxiliary menu for right input parameters inclusion in or removal from the main menu ENTER or start the X TUNE The menu option is indicated in the auxiliary menu by a cross x in the box Press the key in a selected and confirmed menu option Selection key on Retrieve the selected menu option to Confirm the parameter selection marked vvith right input parameters arrovv keys ENTER or start the X TUNE SELEC Press the key in a selected and confirmed menu option Selection key on left The Configuration level is left and the Leave a sub menu option EXIT data is saved in the memory EEPROM Table 31 Configuration level Key functions Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 21 2 Configuration menu The Configuration menu consists of the main menu and auxiliary menu The main menu includes firstly the basic functions which you specify during the initial start up The auxiliary menu includes additional functions and is accessible via the ADD FUNCTION menu option of the main menu Device functions and parameters
132. le 29 Display Position controller type Type 8792 20 3 3 Operating structure AUTOMATIC operating state Configuration Svvitch betvveen Display the displays no operator action POS CMD TEMP INPUT MANUAL operating state Fig 88 Operating structure AUTOMATIC position controller type Type 8792 87 burkert FLUID CONTROL SYSTEMS Type 8792 8793 Start up operation position controller Type 8792 20 4 MANUAL operating state Without bar running from left to right along the upper edge of the display In MANUAL operating state the valve can be opened or closed manually 20 4 1 key MENU MANU OPN CLS Left selection key Right selection key Up arrow key Down arrow key SFA Actuator closes by spring force o SFB Actuator opens by spring force SFl Actuator double acting MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 88 Meaning of the keys ration Switch to the Configuration level press for approx 3 s Switch between the AUTOMATIC AUTO or MANUAL MANU operating modes Aerate the actuator Control function A SFA Control function B SFB Control function SFI Valve opens Valve closes Connection A1 aerated Deaerate the actuator Control function A SFA Control function B SFB Control function SFI Valve closes Valve opens Connection A2 aerated only if Fall is set in the DIR ACT a
133. leased freigegeben printed 01 09 2009 21 2 5 Principle of including auxiliary functions in the main menu Main menu Auxiliary functions Lv ADD FUNCTION X CONTROL EN LY Extended main menu ADD FUNCTION Fig 37 Including auxiliary functions 93 burkert FLUID CONTROL SYSTEMS Type 8792 8793 Start up operation position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 94 21 3 21 3 1 Auxiliary functions controller Type 8792 Fig 38 YI POS SENSOR CHARACT CUTOFF DIR CMD DIR ACT SPLTRNG X LIMIT X TIME X CONTROL SECURITY SAFEPOS SIG ERROR BINARY IN OUTPUT CAL USER SET FACTORY SER 1 O EXTRAS SERVICE Overview of auxiliary functions for the position Selection of the transfer characteristic between input signal and stroke correction characteristic Sealing function for position controller Effective sense of direction between input signal and set point position Assignment of the aeration state of the actuator chamber to the actual position Signal split range input signal as 96 for which the valve runs through the entire stroke range Limit of the mechanical stroke range Limiting the control speed Parameterization of the position controller Code protection for settings Input the safety position Configuration of sign
134. lection key INPUT to select the input screen for SPmin On the display the last digit of the value is highlighted vvith a dark background Press the up arrow key to specify the value of the individual digit Press the down arrow key to switch to the next digit When all input values have been specified confirm the values by pressing the right selection key OK The menu then jumps back to the selection screen 139 burkert FLUID CONTROL SYSTEMS Start up operation Type 8792 8793 process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 140 9 P CO INIT Setting the smooth switchover between MANUAL and AUTOMATIC The PCO INIT function enables a smooth switchover between the MANUAL and AUTOMATIC operating states Factory setting bumpless Gentle switchover activated reon 1 O Gentle switchover deactivated Fig 83 Operating structure P CO INIT Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 22 7 3 P Q LIN Linearization of the process characteristic D This function automatically linearises the process characteristic When the PCONTROL function is activated the P Q L N functions required for process control are copied into the main menu This function st
135. llowing Table 37 At the end the TUNE ready message is indicated Press any key to return to the main menu o To stop the P TUNE self optimization function press the left or right key STOP key 143 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 144 22 7 4 4 Self optimization sequence of the process controller Display Description starting process tune Start of the self optimization function identifying control process Automatic process identification Characteristic process parameters are deter mined from the response signal to a defined prompt calculating PID parameters Determination of the structure and parameters of the PID controller TUNE ready Successful end to the self optimization function TUNE err break Display if the self optimization function is stopped or if a fault occurs Table 37 Sequence of the self optimization function Type 8792 8793 bi D urkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 23 OPERATION OF THE PROCESS CONTROLLER Rh A precise description of the control and display elements as well as the configuration of the keys can be a found in chapter
136. menu ACTUATOR INPUT Main menu MAIN Operating state AUTOMATIC or MANUAL MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 END approx 3 s ACTUATOR Operating mode of the actuator preset at the factory Selection of the input signal Se E 4 20mA Ed t 0 20mA_ Yoo o CD Self parameterization RUN approx Dre XTUNE XTUNE SAVE FEPROM Gb ADD FUNCTION not required for the initial start up Fig 29 Operating structure Basic settings for intial start up 75 Type 8792 8793 Initial start up burkert FLUID CONTROL SYSTEMS 6002 601 10 ueqebebie peseejeJ 1H smeIs Y uoisjeA NI 2268110001 NYIN 76 Type 8792 8793 burkert FLUID CONTROL SYSTEMS Start up and operation of the position controller Type 8792 CONTENTS 19 STARTING UP AND ADJUSTING THE POSITION CONTROLLER usssoennessennnuesseennunssoenunessennnussssennanssoenunensenenns 79 19 1 Safety instructions me 79 19 2 b l KERRY R UU 79 19 3 Procedure for specifying the settings ss sssssssssssessss ssessss ssa se aaa 79 19 4 Factory settings of the position controller a
137. mode is implemented and monitored in AUTOMATIC operating state A bar runs along the upper edge of the display ood gb dE s dE se ae all PMENU MANU MANUAL In MANUAL operating state the valve can be opened and closed manually via the arrow key OPN CLS No bar running along the upper edge of the display az aq nan d ft dE Jp od MENU OPN CLS AUTO The right selection key can be used to switch between the two operating states AUTOMATIC AUTO and MANUAL MANU It is possible to switch from AUTOMATIC to MANUAL mode only on the POS and CMD displays and also o on the PV display for Type 8793 On the SP display only for external process set point value see also chapter 11 2 Configuration of the keys 39 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Control and display elements operating modes MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 40 12 2 AUTOMATIC Operating State for Type 8792 Bar runs along the upper edge of the display from left to right Normal control mode is implemented and monitored in AUTOMATIC operating state The arrow keys can be used to switch between the following displays in AUTOMATIC operating state Display of actual position of the valve actuator O R 0 0 100 NSN IN ET T ANT Display of nominal position of the valve actuator or 0 2 0 Display of nominal position of the valve actuator after rescaling
138. n of the set point point value value DIR CMD DIRACT aeration state of the actuator and the actual position X LIMIT stroke range Limiting the control speed Input of the opening and closing time for the entire stroke s X CONTROL difference to be defined Safety position Definition of the safety position pws m Signal level error detection Check the input signals for sensor break SIG ERROR Warning output on the display and start up of the safety position if selected Binary input Switch over AUTOMATIC MANUAL or Analogue feedback and or binary outputs option Status signal set point or actual value User calibration Change to the factory calibration of the signal input Fr Table 4 Properties of the process controller software Position controller with additional function MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 28 English Types 8792 8793 bu rkert Description of System FLUID CONTROL SYSTEMS Process controller vvith the follovving setting options Process controller PID Process controller is activated F CONTROL Adjustable parameters Parameterization of the process controller P CONTROL PARAMETER Proportional coefficient reset time hold back time and operating point Scalable inputs Configuration of the process controller P CONTROL SETUP Selection of the sensor input Scaling of process actual value and process set point value
139. necting the process controller 8793 anunneunneennennnunnnunnnennnunnennnnennunnnnnnnunnnennnunnnnnnnunnunnnennennnnennnnnnnunnennnenn 65 16 4 1 Plug assignments of the process actual value input M8 circular plug 65 17 ELECTRICAL CONNECTION TERMINAL MODEL FOR CABLE 26 66 45 burkert Type 777 8793 FLUID CONTROL SYSTEMS Installation 17 1 Connection board of the positioner with screw type terminals 66 17 2 Terminal Assignment for Cable Gland Position Controller Type 8792 67 17 2 1 Input signals from the control centre e g PLC au 67 17 2 2 Output signals to the control centre e g PLC required for Analogue output and or Binan output option a q ne om 17 2 3 Operatirig Voltage tette rte eterne intente unten eret tacent reet entree enia ees 68 17 2 4 Connecting the external position measuring system for remote model only 68 17 3 Terminal Assignment for Cable Gland Position Controller Type 8793 69 17 3 1 Terminal assignments of the process actual value input sees 69 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 46 Type 8792 8793 Installation FLUID CONTRO
140. nection including Device is not connected to the plug assignment correct is displayed approx every bus 3 seconds Check power supply and bus connection of the other nodes Table 57 Error message Profibus process controller 8793 201 burkert FLUID CONTROL SYSTEMS Servicing and Troubleshooting the Process Controller Type 8793 Type 8792 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 202 39 2 Other faults Problem Possible causes Remedial action POS 0 when CMD gt 0 or Sealing function CUTOFF has been unin Deactivate sealing POS 100 when CMD lt 100 tentionally activated function PV when SP gt or PV PV when SP gt SP Applies only to devices with binary Binary output Check binary output output Current gt 100 mA connection Binary output does not switch Short circuit Applies only to devices with process PCONTROL menu option is in the main Remove PCONTROL controller menu The device is therefore operating as menu option from the main a process controller and expects a process menu actual value at the corresponding input Device is not operating as a con troller despite correctly implemented settings Table 58 Other faults process controller 8793 Type 8792 8793 burkert FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 20
141. ng state At the process operating level the normal control mode is implemented and monitored AUTOMATIC and the valve is manually opened or closed MANUAL Display Description of the key configuration Right selection key Down arrow key Up arrow key Left selection key Fig 32 Operating module Specifying the Basic Settings 20 1 Switching between the operating states The right Selection key can be used to switch between the two operating states AUTOMATIC AUTO and MANUAL MANU In the AUTOMATIC operating state a bar runs along the upper edge of the display from left to right 85 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 86 20 2 Switching between the operating levels Process operating level gt Configuration level To switch to the configuration level in the MANUAL or AUTOMATIC operating state hold down the left selection key MENU for approx 3 seconds Countdown two bars converge on the display At the Configuration level the operating parameters can be input or changed auxiliary functions supplemented or the automatic adjustment X TUNE of the controller started A precise description of the individual functions can be found in chapter 27 Configuring the auxiliary functions Configuration level Process operating level Press the left
142. ng up the positioner for the first time implement the following standard settings Specify the selected unit signal input for the set point value default INPUT 4 20 mA 20 mA 10 Vor0 5V Start automatic adjustment of the position controller to the particular operating conditions X TUNE an The exact description of the NPUT and X TUNE functions can be found in the chapter entitled 19 6 Description of the basic functions in the main menu The basic settings for the positioner are implemented at the factory During start up however it is essential to input the unit signal NPUT and run X TUNE Using the X TUNE function the positioner automatically determines the optimum settings for the current operating conditions If the auxiliary function X CONTROL is in the main menu while X TUNE is running the position controller dead band DBND is also determined automatically depending on the friction behaviour of the actuator drive see chapter entitled 21 3 10 X CONTROL Parameterization of the position controller 81 HB 8 E Type 8792 8793 burkert FLUID CONTROL SYSTEMS Start up operation position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 82 19 6 Description of the basic functions in the main menu 19 6 1 Main menu of the positioner Operate process Configuration Main menu Selection menu MAIN ACTUATOR INPU
143. nnected operating medium pressure may cause the con troller to be wrongly adjusted X TUNE at the supply pressure available during subsequent operation 2 pneumatic auxiliary energy Run the X TUNE function preferably without operating medium pressure to exclude interference caused by flow forces To enter the main menu hold down the left selection key MENU for approx 3 s countdown on the display Using the arrow keys select the X TUNE menu option To start the automatic adjustment X TUNE hold down the right selection key RUN for approx 3 s countdown on the display While the automatic adjustment is running messages on the progress of the X TUNE e g TUNE 1 are indi cated on the display When the automatic adjustment completes the message X TUNE READY is indicated To return to the main menu press any key To leave the main menu press the left selection key EXIT You have to leave the main menu by pressing the left selection button EXIT before the modified data is saved in the memory EEPROM During the save process the message SAVE EEPROM is indicated on the display MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 74 Type 8792 8793 nitial start up burkert FLUID CONTROL SYSTEMS 18 3 3 Overview of the operating structure for initial start up Operate process Configuration Selection
144. nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nennen 33 10 3 4 Electrical dta su aan een an une han En 33 10 35 Phe matie data ec ette re ici ten ect eel ete NEN 34 S English burkert Types 8792 8793 FLUID CONTROL SYSTEMS Descri ption of System 5 DESCRIPTION AND FEATURES OF THE POSITIONER 5 1 General Description The positioner Type 8792 8793 is a digital electro pneumatic position controller for pneumatically actuated proportional valves The device incorporates the main function groups Position measuring system Electro pneumatic control system Microprocessor electronics The position measuring system measures the current positions of the proportional valve The microprocessor electronics continuously compare the current position actual value with a set point position value specified via the unit signal input and supplies the result to the position controller If there is a control difference the electro pneumatic control system corrects the actual position accordingly 5 1 1 Features Versions The positioner features either a position control function Type 8792 or a process control function Type 8793 Position measuring systems internal high resolution conductive plastic potentiometer or external non contact non wearing position measuring system remote Microprocessor controlled electronics for signal processing control and valve control Control module Operation of the d
145. nt amplification factor Tn Reset time Time which is required to obtain an equally large change in the actuating variable by the portion as occurs due to the P portion Tv Derivative time Time by which a certain actuating variable is reached earlier on account of the D portion than with a pure P controller Step response and ramp response of the PID controller D portion portion portion D portion P portion P portion ia gt gt Reset time Tn Hold back time Tv Step response of the PID controller Ramp response of the PID controller Fig 120 Characteristic of step response and ramp response of PID controller 211 burkert FLUID CONTROL SYSTEMS Additional technical information Type 8792 8793 44 5 Implemented PID controller 44 5 1 D Portion with Delay In the process controller of the positioner the D portion is implemented with a delay T Function py uuu Xd dt dt Superposition of P and DT Portions Fig 121 Characteristic of superposition of P and DT Portions 44 5 2 Function of the Real PID Controller To cv Kp Xd Xddt Tv dt Tn dXd 10 Superposition of P and DT Portions MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Fig 122 Characteristic of step response of the real PID controller adjustment rules for PID controllers 212 Type 8792 8793 burkert Additional technical
146. ntrol and display elements Type 8792 8793 operating modes MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 44 Type 8792 8793 E burkert FLUID CONTROL SYSTEMS Installation CONTENTS 14 ATTACHMENT AND ASSEMBLY i i ainai rasion o ada ie aai aaia 47 14 1 Safety iiireilet petm RR G 47 14 2 Attachment to a proportional valve with push drives according to NAMUR 48 14 2 1 Attachment kit for push drives serial no 787 215 eren 48 14 2 2 Installation eee s a aaa USD o D RS en 49 14 2 3 Attaching mounting bracket sese tentent tenente entente tente tenens 51 14 2 4 Aligning lever mechanism essent tete tenente tete tenten entente tenente tente tenter tenente 52 14 3 Attachment to a proportional valve with swivel actuator s s sssss s 53 14 3 1 Mounting kit on swivel actuator part no 787338 tnnt 53 14 3 2 1 ea yunan RE dE aan 53 14 4 Remote operation with external position measuring system 56 14 4 1 Mouniting accessories tete aa ir tend 56 14 4 2 Connection and start up of the Remote Sens
147. o respond from a specific control difference only This protects both the solenoid valves in the positioner and the pneumatic actuator Factory setting 1 0 with reference to the range of the process actual value scaled by PV SCALE PVmin and PVmax DBND 10 A 2 y d If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged Fig 69 Operating structure PCONTROL DBND Insensitivity area for process control Process set point Control to the value SP difference controller Process Dead band actual value PV Fig 70 P CONTROL DBND graph Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 KP Amplification factor of the process controller The amplification factor specifies the P contribution of the PID controller Factory setting 1 00 1 00 Adiustment range mm 48 i set unit Fig 71 Operating structure PCONTROL KP o The KP amplification of the process controller refers to the scaled unit G TN Reset time of the process controller Specifies the I contribution of the PID controller Factory setting 999 9 s Adjustment range 7 0 5 999 9 5 Fig 72 Operating structure PCONTROL TN 4 TV Hold back time of the process controller
148. ocess controller s ss sssssssesssesssessesssse seansa asan 124 22 5 Procedure for setting up a process control ss ssssssssssssesssesss ssse seansa asan 125 226 Setting up the position controller QV 126 22 7 Setting up the process controller daaa noU RENDER RD DGE 126 P E 22 7 1 P CONTROL Starting the auxiliary function 8 126 b 8 22 7 2 P CONTROL Basic settings for the function 8 127 E 227 8 P O L N Linearization of the process characteristic B 141 9 22 7 4 P TUNE Self optimization of the process controller process tune EORNM 142 d 23 OPERATION OF THE PROCESS 11 145 a 23 1 Switching between the operating states 5 2 5 145 E 23 2 Switching between the operating levels nnsnennsennonnennnnunnunnnenneunnnennnunnnnnnnunnunnnunnnnnnnennnunnnnnnnnnnunnnunnnnnnnennnunn 146 23 3 AUTOMATIC operating 52 146 S 23 8 1 Meaning of the keys unnsesnnsusnsnennsunennsununnsnnsunsnnnnnennunnsununnunnsnnnnsnunsunnunsnnunsnnnsnnnnsnsnnnsunnsnnnnunnnnsnnnunn 146 23 8 2 Information on the display 7
149. of actual position of the valve actuator 0 SP XXX Process set point value Table 39 Display process controller Type 8793 23 3 3 Operating structure AUTOMATIC operating state Configuration Switch between the Display displays no operator action POS PV CMD SP TEMP Set process set point value MANUAL operating state Displayed only when P CONTROL auxiliary function activated only active if the internal set point value default PCONTROL SETUP SP INPUT internal has been selected Fig 85 Operating structure AUTOMATIC process controller Type 8793 147 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 148 23 3 4 Manually Changing the Process Set Point Value When configuring the auxiliary function specify P CONTROL SETUP SP INPUT internal set the set point value by pressing keys When the SP Setpoint display is set by pressing the right selection key INPUT activate the menu for changing the process set point value Set the individual digits by pressing the arrow keys Press the right selection key OK to accept the set value see Fig 86 Setting numerical values SP SET VALUE SP 0 s 000 Changeable number L Accept the set value Change to next number Increase number Return without change
150. of signal level fault detection 159 burkert FLUID CONTROL SYSTEMS Start up operation Type 8792 8793 process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 160 OUT DEV X Alarm output for excessively large control deviation of the position controller Press the arrow keys to mark the OUT DEV X menu option and confirm with the selection key on the right SELEC Press the arrow keys to input the the limit value for the permitted control deviation in the Lim DEV X menu option and accept with the selection key on the right OK o The permitted control deviation Lim DEV X XX must not be less than the dead band In the OUT BIN1 2 type menu option input the required switching status normally open normally closed see Table 41 OUT POS Output of the current position with respect to a specified limit position Press the arrow keys to mark the OUT POS menu option and confirm with the selection key on the right SELEC Press the arrow keys to input the value of the limit position in the Lim POS 006 menu option and accept with the selection key on the right OK In the OUT BIN1 2 type menu option input the required switching status normally open normally closed see Table 41 OUT BIN1 2 normally open normally closed POS LIM POS LIM 24V o OV _ Normally open output in svvitched state high
151. of the Freely Program characteristic Fig 42 Example of a programmed characteristic 6002 601 10 peuud peseejeJ TY smeig v UOISI A NI 2268110001 NVIA 98 Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 21 3 4 CUTOFF Sealing function for the position controller type Type 8792 an The sealing function for the process controller type Type 8793 can be found in chapter Auxiliary functions for the process controller This function causes the valve to be sealed outside the control area This is where you input the limits for the position set point value CMD as a percentage from which the actuator is fully deaerated or aerated Control mode opens or resumes at a hysteresis of 19 6 If the process valve is in the sealing area the message CUTOFF ACTIVE is indicated on the display Factory setting Min 0 Max 100 CUTOFF Sealing threshold Deaeration 0001 Adjustment range 0 25 yo Min 0 0 not active m Sealing threshold Max 100 F Max 10000 Adjustment range 75 100 90 100 not active If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged Fig 48 Operating structure CUTOFF Changed values are not transferred
152. ontrol s ss sssssssssssss tanus atno suos 23 7 2 Properties of the position controller software 5 24 E 8 TYPE 8793 WITH PROCESS CONTROLLER 1 2 2 26 8 1 Schematic representation of process 27 5 8 2 Properties of the position controller software naneneonnsenneunnennnunnnunnsunnennnnennunnnnnnnunnnennnunnnnnnnunnunnnennnnnnnenneunnen 28 z LL 5 9 INTERFACES OF THE 5 5 30 8 10 izeleirv 31 lt 10 1 Safety positions after failure of the electrical or pneumatic auxiliary poweer 31 10 2 Factory settings of the positioner s sss sssssssssssessss sss sse tatus aaa arenaya 32 10 3 Specifications of the Positioner s ss sssssssssssssssssssse ssa tasso toas seansa 33 10 3 1 Operating Conditions zauriren en ag t N 33 10 3 2 s lfol 0 33 10 3 3 Mechanical data nnnenenneenmnnsennnnnnnnnnnnnnnnnnnnnnnnnn
153. oo Up arrow key Left selection button ESC Right selection button OK The four digit code can be changed via the arrow keys Select the individual digits Change the selected digit Leave the input screen without making a change Leave the input screen saving the input or making a change 155 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 156 24 4 SIG ERROR Configuration of signal level fault detection The S G ERROR function is used to detect a fault on the input signal Fault detection Fault detection can be selected at 4 20 mA and Pt 100 signal can be selected 4 20mA Fault if input signal x 3 5 mA 0 5 of final value hysteresis 0 5 of final value PT100 Fault if input signal 225 C 0 5 of final value hysteresis 0 5 of final value f other signal types are selected or if process controllers are not activated the respective menu branch is hidden If this configuration does not allow either of the two fault detections not available is indicated in the selection menu SIG ERROR SP CMD Signal fault detection Process set point value nominal position T Signal fault detection Process actual value Fig 92 Operating structure SIG ERROR 8793 The operating structure of the menu options SP CMD Input an
154. or Type 8798 2 57 14 4 83 Connection and start up via a 4 20 mA path sensor for type 8793 remote model only 58 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 15 FLUID CONNECT ON y c s 59 NET IVELIT aneia aca AR a a Ya rara a areas na a aka 59 16 ELECTRICAL CONNECTION MULTI POLE PLUG VERSION cssssssssssssssssssssssssssssssesssessesssssamssessnsnessesseeteeease 61 16 1 Type 8792 designation of the circular connectors 61 16 2 Connection of the position controller Type 8792 sss ssssssssessessss sssssse sssi 62 16 2 1 Input signals of the control centre e g PLC M12 8 pole plug 62 16 2 2 Output signals to the control centre e g PLC M 12 8 pole plug required for analogue output Option ONIY Jaena b s s dl 62 16 2 3 Output signals to the control centre e g PLC M8 4 pole socket for binary outputs option 63 16 2 4 Operating voltage M12 8 pole circular connector sss 63 16 3 Type 8793 designation of the circular connectors and contacts 64 16 4 Con
155. ower SAFEPOS set position Inactive menu option SAFEPOS If a fault is detected the actuator moves to the end position which the actuator would specify in the isolated state 109 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 110 21 3 14 BINARY IN Activation of the binary input This function activates the binary input The following settings can be implemented for this Approaching the safety position or Switching over the MANUAL AUTOMATIC operating mode BINARY IN Safety position MANU AUTO Operating mode switchover LV ex BIN IN type IN type BIN IN type gt Selection Type of the binary input s normally open normally closed 0 5V 1 10 30V 0 Em normally open 0 5V 0 10 30V 1 Fig 60 Operating structure BINARY IN SAFEPOS safety position Approaching a safety position Active menu option SAFEPOS The actuator moves to the lower SAFEPOS set position nactive SAFEPOS menu option The actuator moves to the end position which it would specify in the isolated state Operating mode switchover MANU AUTO Switch over the operating state to MANUAL or AUTOMATIC Binary input AUTOMATIC operating mode Binary input 1 MANUAL operating mode If operating mode switchover is selected you can no longer s
156. portion Function Y Kp Xd 4 Kp is the proportional coefficient amplification factor It is the ratio of the adjusting range AY to the proportional range AXd Characteristic and step response of the P portion of a PID controller 5 gt Ed E o co 2 Dd o lt S x Ymin Proportional range AXd Characteristic Step response Fig 117 Characteristic and step response of the P portion of a PID controller Properties n theory a pure P controller functions instantaneously i e it is quick and therefore dynamically favourable It has a constant control difference i e it does not fully correct the effects of malfunctions and is therefore statically relatively unfavourable MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 208 Type 8792 8793 Te a burkert Additional technical information FLUID CONTROL SYSTEMS 44 2 I portion Function 1 Y Xddt 5 Til Ti is the integral action time or actuating time t is the time vvhich passes until the actuating variable has run through the vvhole adiustment range Characteristic and step response of the 1 portion of a PID controller m S gt E 5 oo 2D ig Characteristic Step response Fig 118 Characteristic and step response of the portion of a PID controller Properties A pure l controller completely eliminates the effects of any malfunctions which occur It ther
157. printed 01 09 2009 33 CONFIGURATION IN THE PROFIBUS DP MASTER User parameters hexparameters are not required 33 1 Configuration of the Process Values The PDI Process Data Input input first PDI Process Data Input from the positioner to the controller ee eei PDI POS Actual position position GSD file PDI POS Actual value of position controller as o Value range 0 1000 Values lt O or gt 1000 are possible if e g Autotune has not run through correctly Identifier HEX 41 40 00 PDI CMD Nominal position command GSD file PDI CMD Set point value of position controller as 960 Value range 1000 Identifier HEX 41 40 01 Process actual value process value GSD file PDI PV Actual value of process controller in physical unit as set in the menu PCO INP or PCO SCAL max value range 999 9999 depending on internal scaling Identifier HEX 41 40 02 Process set point value setpoint GSD file PD SP Set point value of process controller in physical unit as set in the menu PCO INP or PCO SCAL max value range 999 9999 depending on internal scaling Identifier HEX 41 40 03 PDI TEMP Device temperature temperature GSD file PD TEMP Temperature of 0 1 C is measured on the CPU board by the sensor Value range 550 55 C 1250 125 C Identifier HEX 41 40 04 PDI MODE Operating mode operation mode GSD file PD MODE Operat
158. r SP 27 TECHNICAL DATA The protocol sequence complies with the standard DIN 19245 Part 3 GSD file BUEROC 1E gsd Bitmap files BUEROC1E bmp PNO ID OC1E Hex Baud rate Max 12 mbaud is automatically set by the positioner Sync and Freeze mode Are not supported Diagnosis telegram No device specific diagnosis Parameter telegram No user parameters MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 The process data is configured in the positioner and in the PROFIBUS master Maximum 10 process values total INPUT and OUTPUT can be transferred 176 Type 8792 8793 PROFIBUS DP burkert FLUID CONTROL SYSTEMS 28 SAFETY SETTINGS IF THE BUS FAILS The position is approached which corresponds to the set point value last transferred default setting Other setting options see chapter 31 Settings on the positioner 29 INTERFACES 1 1 1 1 1 1 1 1 1 1 1 1 4 nput for process actual value Note Fig 107 Interfaces PROFIBUS DP MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Positioner PROFIBUS DP Operation Optional inputs and outputs are illustrated by dotted lines Bus ee ee in b N 2 binary outputs e 24 V PNP o x a li a a mm m T M Initiator 1 Initiator 2 24 V PNP NO P only for process controller Type 8793 177 Type 8792 8793 burkert PROFIBUS DP
159. range from which the actuator is fully deaerated or aerated Control mode opens or resumes at a hysteresis of 1 If the process valve is in the sealing area the message CUTOFF ACTIVE is indicated on the display Factory setting Min 0 100 CUT type Type PCO CUTOFF Min 096 Sealing threshold Deaeration O not active 1 ee Adiustment range 0 25 Sealing threshold Aeration 100 not active Adjustment range 75 100 Max 100 Select process set point value Type XCO O Select position set point value If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged Fig 89 Operating structure CUTOFF process controller type Type 8793 Changed values are not transferred into the memory EEPROM until the main menu MAIN is left Type 8792 8793 Start up operation process controller Type 8793 burkert FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Valve stroke Adjustable from 75 100 7 Set point value 3885888 CMD L Adjustable from O 25 96 Fig 90 Graph CUTOFF process controller 153 burkert FLUID CONTROL SYSTEMS Start up operation Type 8792 8793 process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 154 24 3 SE
160. ration left selection key Switch to the Parameterization level MENU AUTOMATIC or MANUAL Operate process The description of the operating statuses AUTOMATIC MANUAL and the operating levels Operate Note the key must be pressed for approx 3 s countdown 2 bars converge on the display panel EXIT BACK AUTOMATIC or MANUAL Operate process on the operating level Parameterization EXIT BACK AUTOMATIC or MANUAL from a menu option on the operating level Parameterization or Configuration Parameterization or Configuration ESC AUTOMATIC or MANUAL Leave a menu Parameterization or Configuration STOP AUTOMATIC or MANUAL End a sequence Parameterization or Configuration right selection Switch between AUTOMATIC and Operate process key MANUAL mode Select activate or deactivate a menu option AUTOMATIC or MANUAL ENTER SELEC OK INPUT Parameterization or Configuration EXIT BACK AUTOMATIC or MANUAL from a menu option on the operating level Param Parameterization or Configuration eterization or Configuration RUN AUTOMATIC or MANUAL Start a sequence Parameterization or Configuration STOP AUTOMATIC or MANUAL End a sequence Parameterization or Configuration Table 9 Button configuration 37 burkert FLUID CONTROL SYSTEMS Type 8792 8793 Control and display elements operating modes 11 3 Information on the display The following representation describes the information on the di
161. rs with any liquids Do not put any loads on the housing e g by placing objects on it or standing on it Do not make any external modifications to the device housings Do not paint the housing parts or screws burkert FLUID CONTROL SYSTEMS General Information Safety Instructions Type 8792 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 10 3 BASIC SAFETY INSTRUCTIONS These safety instructions do not make allowance for any contingencies and events which may arise during the installation operation and maintenance of the devices local safety regulations the operator is responsible for observing these regulations also with reference to the installation personnel A Danger high pressure Before loosening the lines and valves turn off the pressure and vent the lines Risk of electric shock Before reaching into the device or the equipment switch off the power supply and secure to prevent reactivation Observe applicable accident prevention and safety regulations for electrical equipment Risk of burns risk of fire if used continuously through hot device surface Keep the device away from highly flammable substances and media and do not touch with bare hands General hazardous situations To prevent injury ensure that That the system cannot be activated unintentionally Installation and repair work may be carried out by authori
162. ry from unintentional activation of the system and an uncontrolled restart Secure system from unintentional activation Following start up ensure a controlled restart 19 2 Installation Before start up carry out fluid and electrical installation of the positioner and valve 19 3 Procedure for specifying the settings When the operating voltage has been switched on the positioner is at the process operating level in the AUTOMATIC operating state To specify the standard settings switch to the configuration level Hold down the left selection key MENU for approx 3 seconds wait for countdown on display Then the main menu is indicated on the display MAIN Use the arrow keys to switch between the main menu options and select a menu Press the right selection key ENTER RUN to confirm the selection Depending on the function a menu sub option or a selection screen is indicated on the display Use the arrow keys to switch between the submenu options and select the required settings Press the right selection key SELEC ENTER to confirm the selection the dot after the selected parameter is now marked To return to the main menu press the left selection key EXIT 79 HB iL Type 8792 8793 burkert FLUID CONTROL SYSTEMS Start up operation position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 so
163. s 0 14 1 5 mm or multi pole plug Power supply 24V 10 max residual ripple 10 Power consumption BVV nput data for actual value signal 4 20 mA Input resistance 180 Resolution 12 bit 33 English burkert FLUID CONTROL SYSTEMS Types 8792 8793 Description of System MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 34 Frequency Pt 100 Input data for set point value signal 0 4 20 mA 5 10 V Protection class Analogue feedback max current Burden load Inductive proximity switches Binary outputs Current limiting Binary input 10 3 5 Pneumatic data Control medium Dust content Water content Oil content Temperature range of compressed air Pressure range Air flow rate Connections Measuring range 0 1000 Hz nput resistance 17 kO Resolution 10 00 of the measured value nput signal gt 300 mV Signal form Sine rectangle triangle Measuring range 20 220 C Resolution lt 0 1 C Measurement current 1 mA Input resistance 1800 Resolution 12 bit Input resistance 19 kO Resolution 12 bit 3 in accordance with VDE 0580 10 mA for voltage output 0 5 10 V 0 560 O for current output 0 4 20 mA 100 mA current limit galvanically isolated 100 mA output is clocked if overload occurs Galvanically isolated 0 5 V log O 10 30 V log
164. sed freigegeben printed 01 09 2009 20 6 STRUCTURE OF THE POSITIONER The positioners Type 8792 and Type 8793 consist of the micro processor controlled electronics the position meas uring system and the control system The appliance is designed using three wire technology Operation of the positioner is controlled by four keys and a 128 x 64 dot matrix graphics display The pneumatic control system for single acting and double acting actuators consists of 2 solenoid valves 6 1 Representation Mechanical position indicator Control module with display and keys Working connection 2 connection A2 Supply pressure connection 1 4 7 bar connection P Working connection 1 connection A1 Air exhaust connection air exhaust filter Pressure relief valve Internal position measuring system Control system Axle for position measuring system Cable bushing Fig 1 Structure positioner type 8792 8793 English Types 8792 8793 bu rkert Description of System FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 6 2 Function diagram 6 2 1 Diagram illustrating single acting actuator The black lines in Fig 2 specify the function of the position controller circuit in Type 8792 The grey part of the diagram indicates the additional function of the superimposed process control circuit in Type 8793 Compressed
165. sed technicians only and with the appropriate tools After an interruption in the power supply or pneumatic supply ensure that the process is restarted in a defined or controlled manner The device may be operated only when in perfect condition and in consideration of the operating instructions The general rules of technology apply to application planning and operation of the device NOTE Electrostatic sensitive components modules The device contains electronic components which react sensitively to electrostatic discharge ESD Contact with electrostatically charged persons or objects is hazardous to these components In the worst case scenario they will be destroyed immediately or will fail after start up Observe the requirements in accordance with EN 61340 5 1 and 5 2 to minimise or avoid the possibility of damage caused by sudden electrostatic discharge Also ensure that you do not touch electronic components when the power supply voltage is present Type 8792 8793 a T n General Information burkert Safety Instructions The positioners Type 8792 and Type 8793 were developed with due consideration given to the accepted safety rules and are state of the art Nevertheless dangerous situations may occur Failure to observe this operating manual and its operating instructions as well as unauthorized tampering with the device release us from any liability and also invalidate the warranty covering the de
166. selection key EXIT to switch from the Configuration level to the Process operating level In doing so the operating state which was selected before the switchover AUTOMATIC or MANUAL is set 20 3 AUTOMATIC operating state Bar running from left to right along the upper edge of the display Normal control mode is implemented and monitored in AUTOMATIC operating state 20 3 1 Meaning of the keys e Sm on O ration Left selection key MENU Switch to the Configuration level press for approx 3 s Right selection key MANU Switch between the AUTOMATIC AUTO or MANUAL MANU operating modes Up arrow key Switch between the individual displays Down arrow key Y Table 28 AUTOMATIC operating state Meaning of the keys Position controller type Type 8792 Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 20 3 2 Information on the display The following variables are indicated on the display for the position controller and it is possible to switch between them with the arrow keys POS XXX 0 100 Display of actual position of the valve actuator CMD XXX 100 90 Display of nominal position of the valve actuator TEMP XXX 100 150 C nternal temperature in the housing of the positioner INPUT XXX 0 4 20 mA 0 5 10 V Input signal for nominal position Tab
167. sensor but an external remote sensor Either the remote sensor type 8798 can be connected via a serial digital interface or any high resolution path sensor can be connected via a 4 20 mA interface 14 4 1 Mounting accessories There are two options of attaching the positioner in remote operation see Fig 22 Installation on a DIN rail with accessory kit Installation on a wall with accessory kit part no 675702 part no 675715 Fig 22 Attachment types in remote operation MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 56 Type 8792 8793 T Installation burkert MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 14 4 2 Connection and start up of the Remote Sensor Type 8798 WARNING Risk of injury from improper start up Start up may be carried out by authorised technicians only and with the appropriate tools Risk of injury from unintentional activation of the system and an uncontrolled restart Secure system from unintentional activation Following assembly ensure a controlled restart Connect the 4 wires of the sensor cable to the designated screw type terminals of the positioner see chapter 17 2 4 Connecting the external position measuring system for remote model only Attach remote sensor on the actuator The correct procedure is described in the brief instructions for the remote
168. settings for the process controller under RCONTROL D Linearization of the process characteristic Implement the P O LIN function Self optimization of the process controller Activate the P TUNE function 125 burkert FLUID CONTROL SYSTEMS Start up operation Type 8792 8793 process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 126 22 6 Setting up the position controller Y Specification of the basic settings is described in the chapter entitled Start up and operation of the position controller Type 8792 Specifying the standard settings When starting up the positioner for the first time implement the following basic settings Specify the selected unit signal input for the set point value default NPUT 4 20 mA 20 mA 10 Vor 5 V Start automatic adjustment of the position controller to the particular operating conditions X TUNE an The exact description of the NPUT and X TUNE functions can be found in the chapter entitled Start up and operation of the position controller Type 8792 Description of the basic functions in the main menu The basic settings for the positioner are implemented at the factory Essential inputs for start up Input the input signal NPUT and Run X TUNE X TUNE function the positioner automatically determines the optimum settings for the current operat
169. signals Analogue output Feedback signal of the current position POS or of the set point value CMD to the control centre Binary outputs Alarm output for excessively large control deviations of the position controller for the output of the current position with respect to a specified limit position or for output actuator in safety position for the output sensor break for the output operating state AUTOMATIC MANUAL The positioner which has the outputs option is available in the following versions one analogue output one analogue and two binary outputs two binary outputs According to the version of the positioner only the possible adjustable outputs ANALOGUE ANA LOGUE BIN 1 BIN 2 or BIN 1 BIN 2 are indicated in the OUTPUT menu option OUT ANALOG Configuration of the analogue output OUT BIN 2 Configuration of the binary output 1 OUT BIN 8 Configuration of the binary output 2 Fig 94 Operating structure OUTPUT process controller type Type 8793 157 burkert FLUID CONTROL SYSTEMS Start up operation Type 8792 8793 process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 158 D OUT ANALOG Configuring the analogue output Only for the versions one analogue output one analogue and two binary outputs The feedback of the current position
170. signation of the circular connectors Operating voltage Binary outputs and diverse signals optional M12 8 pole plug Function earth FE M8 4 pole socket Fig 24 Type 8792 designation of the circular connectors and contacts 61 burkert FLUID CONTROL SYSTEMS Installation Type 8792 8793 16 2 Connection of the position controller Type 8792 16 2 1 Input signals of the control centre e g PLC M12 8 pole plug Pin Wire colour Configuration External circuit Signal level 1 white Set point value 0 4 20mA o 0 4 20 mA or0 5 10V or 5 10 V completely galvanically isolated 2 brovvn Set point value GND 2 0 GND l 0 5V log 0 5 grey uu aa re 10 30 V log 1 6 pink Binary input GND 6 0 GND The indicated wire colours refer to the connection cable part no 919061 available as an accessory Table 16 Pin assignment input signals of the control centre M12 8 pole plug 16 2 2 Output signals to the control centre e g PLC M 12 8 pole plug required for analogue Output option only Connect pins according to the model options of the positioner Seren Configuration External circuit signal level Analogue feedback 8 o 0 4 20 mA or 5 10 V completely galvanically isolated Analogue feedback GND 7 o GND The indicated wire colours refer
171. specify the basic functions of the position controller and then supplement the auxiliary functions for the process control 22 3 Procedure for specifying the settings When the operating voltage has been switched on the positioner is at the process operating level in the AUTOMATIC operating state To specify the standard settings switch to the configuration level Hold down the left selection key MENU for approx 3 seconds wait for countdown on display Then the main menu is indicated on the display MAIN Use the arrow keys to switch between the main menu options and select a menu Press the right selection key ENTER RUN to confirm the selection Depending on the function a menu sub option or a selection screen is indicated on the display Use the arrow keys to switch between the submenu options and select the required settings Press the right selection key SELEC ENTER to confirm the selection the dot after the selected parameter is now marked 123 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 124 To return to the main menu press the left selection key EXIT To save the changed settings leave the configuration level by pressing the left selection key EXIT The positioner is now back on the process operating level Only when
172. splay Description of the value POS Unit or percentage of the value LC dE dE dE de d 1 0 0 Display for AUTOMATIC mode bar runs from left to right Value b 1 Bar graph display of the value Configuration of the keys Fig 11 Description of display List of values vvhich can be displayed in AUTOMATIC mode PV PROCESS VALUE bar mbar psi mm litre 1 5 l min l h m3 min m3 h UG s UG min IG s IG min IG h CE SP SETPOINT bar mbar psi 9o mm litre 1 5 l min l h m3 min m3 h UG s UG min IG s IG min IG h e F SP PV graphic Table 10 Representable values in AUTOMATIC mode MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Course EN ANE 777 ke titra tence weeny a Process actual value 4 20 mA input Process actual value frequency input Process actual value PT100 input Process set point value Graphic display of set point and actual value is displayed graphically Unit depending on process actual value 38 Type 8792 8793 burkert Control and display elements FLUID CONTROL SYSTEMS operating modes MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 12 OPERATING MODES 12 1 Operating state The positioner has 2 operating states AUTOMATIC and MANUAL mode AUTOMATIC Normal control
173. sssssssisssnnssins da dan a adak s da s aa sib rss s z 176 3 28 Safety Settings if the Bus Fails 177 KE geniidcis 178 3 31 Settings on the positioner neanenneonnsenneunnennnunnnunnnunnnunnnenrunnnnnnnunnnennnnnnnnnnennnunnnennnunnnennnnnnnnnnennnennnnnnnnnnnnnnnnnnennnann 182 d 32 Functional Deviations from the Standard Model nara nara nari 186 33 Configuration in the Profibus DP Master ss sssssssssssssssesssessse tasa sotto assa sea iran 187 8 34 Bus status display Eee 189 E 35 Configuration with Siemens Step 7 n nruuneunnnunneunnzenrunnnenneunnnennnunnennnnnnnunnnennznnnnennunnnnnnnunnnennnunnnnnnnunnnnnnennnunnnenneunn 190 o SERVICING AND TROUBLESHOOTING THE POSITION CONTROLLER TYPE 8792 193 5 KL uEnn 194 SERVICING AND TROUBLESHOOTING THE PROCESS CONTROLLER TYPE 8794 197 lt 38 a y 0 0 ennenen nanena nna 198 PACKAGING STORAGE DISPOSAL cssssss sssssssssssssessesssesssssseeseessnseeseesasensesesuieesssnsnessessueeseesuseeesesaieeessnsneseesaueneeseauientees 203 40 Packaging and Trams port sssiaisccsccssccssccsscesscesscasscccassctessctecccssteasseaces
174. supply pressure as low as possible max 10 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 60 Type 8792 8793 burkert Installation FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 16 ELECTRICAL CONNECTION MULTI POLE PLUG VERSION N DANGER Risk of injury due to electrical shock Before reaching into the device or the equipment switch off the power supply and secure to prevent reactivation Observe applicable accident prevention and safety regulations for electrical equipment A N WARNING Risk of injury from improper installation Installation may be carried out by authorized technicians only and with the appropriate tools Risk of injury from unintentional activation of the system and an uncontrolled restart Secure system from unintentional activation Following installation ensure a controlled restart Using the 4 20 mA nominal value input f the operating voltage of one positioner device fails in a series connection of several devices the input of the failed positioner device becomes highly resistive As a result the 4 20 mA standard signal fails In this case please contact B rkert Service directly If PROFIBUS DP or DeviceNet The designation of the multipole plugs and sockets and the contacts can be found in the respective chapters 16 1 Type 8792 de
175. tart up operation Type 8792 8793 position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 114 OUT DEV X Alarm output for excessively large control deviation of the position controller Press the arrow keys to mark the OUT DEV X menu option and confirm with the selection key on the right SELEC Press the arrow keys to input the the limit value for the permitted control deviation in the Lim DEV X menu option and accept with the selection key on the right OK o The permitted control deviation Lim DEV X XX must not be less than the dead band In the OUT BIN1 2 type menu option input the required switching status normally open normally closed see Table 32 OUT POS Output of the current position with respect to a specified limit position Press the arrow keys to mark the OUT POS menu option and confirm with the selection key on the right SELEC Press the arrow keys to input the value of the limit position in the Lim POS 006 menu option and accept with the selection key on the right OK In the OUT BIN1 2 type menu option input the required switching status normally open normally closed see Table 32 OUT BIN1 2 normally open normally closed POS LIM OV o o 24V o POS lt LIM 24V d OV _ Normally open output in switched state high 24 V Normally closed output in switched st
176. ter 17 3 1 Table 25 Terminal assignments of the process actual value input row 1 or 3 Attach path sensor to the drive The correct procedure is described in the instructions for the path sensor Connect compressed air to the process controller type 8793 Connect process controller type 8793 pneumatically to the drive Switch on positioner power supply MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 To obtain the best possible control precision adjust the path sensor so that path to be measured corresponds to the signal range 4 20 mA only if the path sensor includes this function In the menu activate the POS SENSOR function via ADDFUNCTION and set to ANALOG see chapter POS SENSOR Run the X TUNE function 58 Type 8792 8793 Installation FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 15 FLUID CONNECTION 15 1 Safety instructions DANGER Risk of injury from high pressure in the equipment Before loosening the lines and valves turn off the pressure and vent the lines WARNING Risk of injury from improper installation Installation may be carried out by authorized technicians only and with the appropriate tools Risk of injury from unintentional activation of the system and an uncontrolled restart Secure system from unintentional activation
177. the individual digits with a dark background Press the up arrow key to set the value Adjustment range 200 800 Measurement range of the PT 100 20 C 220 C or 4 F 428 F This setting specifies the reference range for the dead band of the process controller as well as for the analogue feedback of the process actual value option 137 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 138 PVmax Upper scaling value for the process actual value The unit for the temperature and the position for the decimal point is transferred from the inputs of the lower scaling value 1 Input the upper scaling value for the process actual value Press the down arrow key to highlight the individual digits with a dark background Press the up arrow key to set the value Adjustment range 200 800 Measurement range of the PT 100 20 C 220 C or 4 F 428 F This setting specifies the reference range for the dead band of the process controller as well as for the analogue feedback of the process actual value option SP INPUT Type of set point value default internal external This function specifies whether the set point value default internal is implemented by pressing the keys on the positioner or external is implemented via the
178. the left ESC the value remains unchanged Fig 55 Operating structure XX CONTROL DBND Insensitivity range dead band of the position controller Input the dead band as 96 relating to the scaled stroke range ie X LIMIT Max X LIMIT Min see Auxiliary function 27 3 8 X LIMIT Limits the mechanical stroke range This function causes the controller to respond only from a specific control difference as a result the solenoid valves in the positioner and the pneumatic actuator are protected troller is running the dead band DBND is determined automatically depending on the friction behaviour If the auxiliary function X CONTROL is in the main menu while X TUNE Autotune of the position con of the actuator drive The guide value determined in this way can be re adjusted manually Position set Control to the point value difference controller Dead band Position actual value Fig 56 X CONTROL graph KX XXX Parameter of the position controller KXopn Amplification factor of the position controller for closing the valve KXcls Amplification factor of the position controller for opening the valve Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 21 3 11 SECURITY Code protection for the settings Use the SECURITY function to prevent the positioner or individual func
179. ting State for Type 8792 40 12 3 AUTOMATIC Operating State for Type 8793 n ununennnunnnunnnunneunnnenrunnnnnnnunnnennnnnnnnnnnunnunnnnnnnunnnennnnnnnnnnnnnnennnennrunn 41 12 4 MANUAL operating state 42 13 OPERATING ay n oa aa ba aa ax aa za s S 43 13 1 Switching between the operating levels ss sssssssssssssssssssessssssssasse stent too sto are snas 43 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 35 burkert FLUID CONTROL SYSTEMS Type 8792 8793 Control and display elements operating modes 11 CONTROL AND DISPLAY ELEMENTS The following chapter describes the control and display elements of the positioner Further information on the control of the positioner can be found in the chapters entitled Installation Start up and operation of the position controller Type 8792 and Start up and operation of the position controller Type 8793 11 1 0 0 LER Control and display elements of the positioner Display Description of the key configuration Right selection key Dovvn arrovv key Up arrovv key left selection key Fig 10
180. tion below 24 V sensor supply Clock input Clock input GND not used not used Clock input Clock input not used not used Process actual 1 power supply Process actual 3 GND Process actual 2 compensation LN T Switch on left E H1 Switch on right E HI Switch on right 24V Clock Clock Clock Clock Can be adjusted via software see chapter Specifying the standard settings Table 20 Plug assignments of the process actual value input M8 circular plug Connect the Pt 100 sensor via 3 cables for cable compensation reasonsilt is essential to bridge Pin 3 and Pin 4 on the sensor When the power supply voltage is applied the positioner is operating Now make the required basic settings and actuate the automatic adjustment of the positioner The procedure is described in chapter nitial start up and chapter Starting up and adjusting the position controller 65 burkert FLUID CONTROL SYSTEMS Installation Type 8792 8793 17 ELECTRICAL CONNECTION TERMINAL MODEL FOR CABLE GLAND N DANGER Risk of injury due to electrical shock Before reaching into the device or the equipment switch off the power supply and secure to prevent reactivation Observe applicable accident prevention and safety regulations for electrical equipment N WARNING Risk of injury from improper installation nstallation may be carried out by a
181. tion is removed from the main menu the settings implemented previously under this function become invalid again In the main menu press the arrow keys to select the ADD FUNCTION menu option and press the selection key on the right ENTER to enter the submenu Using the arrow keys select an auxiliary function indicated with a cross x Press the selection key on the right ENTER to remove the cross x After pressing the selection key on the left EXIT the auxiliary function is deactivated and removed from the main menu 21 2 4 Setting numerical values Numerical values can be set in the designated menu options by pressing the keys once or repeatedly up arrow key increase the numerical value down arrow key reduce the numerical value In the case of four digit numbers only the saved digit can be set with the up arrow key Press the down arrow key to switch to the next digit see Fig 36 Setting numerical values SET es Previously set value Changeable value aE Emcee L Accept the set value Reduce value Increase value Return without change SET VALUE Access Code 1 0003 Changeable number Accept the set value Change to next number Increase number Return without change Fig 36 Setting numerical values Type 8792 8793 Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL re
182. tioner may be moved within this range only Swivel range of the positioner Flattened axle The swivel movement of the positioner must be within the position measuring system slewing range of 1207 Fig 19 see Fig 201 lewing range anti twist safeguard Place positioner on mounting bracket and attach with 4 cheese head screws and circlips 4 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 54 Fig 20 Attaching mounting bracket Type 8792 8793 burkert Installation FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Place positioner with mounting bracket on the swivel actuator and attach see Fig 21 Fig 21 Swivel actuator attachment If the XB TUNE ERROR 5 message is indicated on the graphics display after the X TUNE function starts the axle of the positioner is not correctly aligned with the axle of the actuator see in chapter Error and warning messages while the X TUNE function is running Check alignment as described previously in this chapter Then repeat the X TUNE function 55 burkert FLUID CONTROL SYSTEMS Installation Type 8792 8793 14 4 Remote operation with external position measuring system In the case of this model the positioner has no position measuring system in the form of a rotary position
183. tions Configuration level gt Process operating level Press the left selection key EXIT to switch from the Configuration level to the Process operating level In doing so the operating state which was selected before the switchover AUTOMATIC or MANUAL is set 23 3 AUTOMATIC operating state Bar running from left to right along the upper edge of the display Normal control mode is implemented and monitored in AUTOMATIC operating state 23 3 1 Meaning of the keys Left selection key MENU Switch to the Configuration level press for approx 3 s Right selection key MANU Switch between the AUTOMATIC AUTO or MANUAL MANU operating modes SP Up arrow key Switch between the individual displays A SP PV graphic POS CMD TEMP PV MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Down arrow key 29 SP SP PV graphic POS Displayed only when P CONTROL auxiliary function activated 146 Table 38 AUTOMATIC operating state Meaning of the keys Process controller Type 8793 Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 23 3 2 Information on the display The following variables are indicated on the display for the process controller and it is possible to switch between them with the arrow keys POS XXX 100 96 Display
184. tions from being accessed unintentionally Factory setting Access Code 0000 If the code protection is activated the code set access code or master code must be input whenever operator action is disabled an All operator actions can be implemented with the non changeable master code This 4 digit master code can be found in the appendix of these operating instructions in the chapter entitled Master code SET VALUE SECURITY Access Code 1 0003 l V ANU AUTO ADDFUNCT X TUNE Fig 57 Operating structure SECURITY position controller type Type 8792 Input screen for inputting or changing the access code for description of input see below Blocking access to the configuration level Blocking switchover between the MANUAL AUTOMATIC MANU AUTO operating states 4 Blocking the input of auxiliary function Blocking the activation of self parameterization Autotune Inputting the access code To access the input screen with marked selection menu CODE press the selection key on the right INPUT T The four digit code can be changed via the arrovv keys Access Code 1 Down arrow key lt Select the individual digits 0001 Up arrow key Change the selected digit Left selection button ESC Leave the input screen vvithout making a change Right selection button OK Leave the input screen saving the input or making a change 107 burkert FLUID CONTROL SYSTEMS Start up
185. tions mec 72 unc 72 18 3 Specifying the standard 5 1 05 7 72 18 3 1 Setting the Input Signal Standard Signal 5 eene 73 18 3 2 Running the Automatic Adjustment 74 18 3 3 Overview of the operating structure for initial start up sss 75 71 burkert FLUID CONTROL SYSTEMS Initial start u p Type 8792 8793 18 INITIAL START UP This section enables you to start up the positioner quickly in order to perform a function check Additional functions which are not required are not dealt with in this chapter 18 1 Safety instructions N DANGER Risk of injury from high pressure in the equipment Before loosening the lines and valves turn off the pressure and vent the lines N WARNING Risk of injury from improper start up Start up may be carried out by authorised technicians only and with the appropriate tools Risk of injury from unintentional activation of the system and an uncontrolled restart Secure system from unintentional activation Following start up ensure a controlled restart 18 2 Installation Before start up carry out fluid and electrical installation of the positioner and valve When
186. uator Remote mounting with mounting bracket MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Remote mounting with DIN rail 18 Table 1 Overview of the mounting options English Types 8792 8793 Description of Systerm FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 5 2 Designs 5 2 1 Type 8792 positioner with position control function The position of the actuator is regulated according to the position set point value The position set point value is specified by an external uniform signal or via field bus 5 2 2 Type 8793 positioner with process control function The positioner Type 8793 also features a PID controller which apart from actual position control can also be used to implement process control e g level pressure flow rate temperature in the sense of a cascade control The positioner Type 8793 is operated with a 128 x 64 dot matrix graphics display and a keypad with 4 keys The positioner is linked to a control circuit The position set point value of the valve is calculated from the process set point value and the actual process value via the control parameters PID controller The process set point value can be set by an external signal 19 English burkert FLUID CONTROL SYSTEMS Descri ption of System Types 8792 8793 MAN 1000118577 EN Version A Status RL relea
187. unit signal input Factory setting internal Internal set point value default by SP INPUT pressing the keys on the positioner O External set point value default via unit signal input Fig 81 Operating structure P CONTROL SP INPUT Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 SP SCALE Scaling of the process set point value This function is indicated in the selection menu only if the external set point value default external has been selected in the SP INPUT menu option The SP SCALE function assigns the values for the lower and upper process set point value to the particular current or voltage value of the unit signal ENTER Set the lower scaling value for SP SCALE FR SPmin 0 0 bar the process set point value 0 0 The value is assigned to the lowest current or voltage value of the unit signal Set the upper scaling value for SPmax 100 0 bar x the process set point value SPmax 100 0 The value is assigned to the largest current or voltage value of the unit signal If the sub menu is left by pressing the selection key on the left ESC the value remains unchanged Fig 82 Operating structure PCONTROL SP SCALE Procedure for setting the scaling values in the example of the lovver scaling value SPmin Press the right se
188. up arrow key to specify the value of the individual digit Press the down arrow key to switch to the next digit When all input values have been specified confirm the values by pressing the right selection key OK The menu then jumps back to the selection screen PV SCALE Scaling the process actual value for signal type 4 20 mA PV INPUT 4 20 mA With the PV SCALE function for signal type 4 20 mA the following settings are specified The unit of the process actual value The position of the decimal point The values for the lower and upper process actual value are assigned to the respective current value of the unit signal If the settings for the unit of the process actual value or the position of the decimal point are input or changed this setting applies to all scaling values PVmin PVmax SPmin SPmax Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 PV SCALE PVmin 0 0 Settings 1 Specify the unit for the process actual value bar mbar psi 96 mm litre l s l min l h m3 min m3 h UG s UG min UG h IG s IG min IG h C F without unit 2 Position the decimal point 3 Set the lower scaling value for the process actual value the value is assigned to 4 mA PVmax 100 0 bar PVmax 100 0 Set the
189. uthorized technicians only and with the appropriate tools Risk of injury from unintentional activation of the system and an uncontrolled restart Secure system from unintentional activation Following installation ensure a controlled restart o Using the 4 20 mA nominal value input If the operating voltage of one positioner device fails in a series connection of several devices the input of the failed positioner device becomes highly resistive As a result the 4 20 mA standard signal fails In this case please contact B rkert Service directly 17 1 Connection board of the positioner with screw type terminals Optional MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 66 Fig 27 Designation of the screw type terminals Type 8792 8793 burkert Installation FLUID CONTROL SYSTEMS MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 Procedure gt Unscrew the 4 screws on the housing cover and remove the cover The screw type terminals are now accessible Connect positioner The procedure is described in the following chapters for Type 8792 see chapter entitled 17 2 Terminal Assignment for Cable Gland Position Controller Type 8792 for Type 8793 chapter 77 3 Terminal Assignment for Cable Gland Position Controller Type 8793 17 2 Terminal Assignment for Cable Gland Position Controll
190. uxiliary function Table 30 AUTOMATIC operating state meaning of the keys Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 20 4 2 Information on the display After switching to the MANUAL operating state the display automatically jumps to the actual position POS of the valve actuator 20 4 3 Operating structure AUTOMATIC operating state MANUAL operating state Valve closed Valve open Release key Release key no operator action Configuration Menu option Fig 34 Operating structure MANUAL 89 burkert Type 8792 8793 FLUID CONTROL SYSTEMS Start up operation position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 90 21 CONFIGURING THE AUXILIARY FUNCTIONS The operating concept for the positioner is based on a strict division between basic and auxiliary functions When the device is delivered only the basic functions are activated They are used during the initial start up to implement basic settings specific to the device They are adequate for normal operation For more demanding control tasks select and specify auxiliary functions at the Configuration level 21 1 Keys at the Configuration level Press the key remens in a selected and confirmed menu option Scrol
191. ved automatically POS SENSOR DIGITAL position signal of the path sensor is transmitted digitally ANALOG 1 The position signal of the path sensor is transmitted analogically Bild 1 Operating structure POS SENSOR Digital interface menu option POS SENSOR DIGITAL The positioner is connected to the path sensor type 8791 via a digital interface see chapter 17 2 4 2 Analog interface menu point POS SENSOR gt ANALOG The positioner is connected via a 4 20 mA interface to any path sensor with a 4 20 mA output signal If the path sensor requires an additional power supply voltage of 24 V DC this can be supplied via the posi tioner see chapter 17 3 1 21 3 21 SERVICE This function is of no importance to the operator of the positioner It is for internal use only Type 8792 8793 burkert FLUID CONTROL SYSTEMS Start up and operation of the position controller Type 8793 CONTENTS 22 STARTING UP AND ADJUSTING THE PROCESS 123 22 1 Safety instructions mee 123 22 2 Installation 123 22 3 Procedure for specifying the settings s ss ssssssssssssssssssse assa sss sssa seye sea 123 22 4 Factory settings of the pr
192. vices and accessories MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 11 burkert FLUID CONTROL SYSTEMS General Information Safety Instructions Type 8792 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 12 4 GENERAL INFORMATION 4 1 Scope of Supply Check immediately upon receipt of the delivery that the contents are not damaged and that the type and scope agree with the delivery note and packing list Generally the product package consists of positioner type 8792 8793 and the associated operating instructions We will provide you with attachment kits for push drives or swivel actuators as accessories For the multipole version of the positioners we will provide you with cable connectors as accessories If there are any discrepancies please contact us immediately Germany Contact address B rkert Fluid Control Systems Sales Center Chr B rkert Str 13 17 D 74653 Ingelfingen Tel 49 0 7940 10 91 111 Fax 49 0 7940 10 91 448 E mail info de buerkert com International Contact addresses can be found on the final pages of these operating instructions And also on the internet at www burkert com gt Burkert gt Company gt Locations Type 8792 8793 burkert General Information FLUID CONTROL SYSTEMS Safety Instructions MAN 1000118577 EN Version A Status RL released freigegeben
193. witch over the operating mode via the selection key on the right MANU AUTO Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS position controller Type 8792 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 21 3 15 OUTPUT option Configuring the outputs The OUTPUT menu option is only indicated in the selection menu of ADD FUNCTION if the positioner has outputs option The outputs can be used for the following feedback signals Analogue output Feedback signal of the current position POS or of the set point value CMD to the control centre Binary outputs Alarm output for excessively large control deviations of the position controller for the output of the current position with respect to a specified limit position or for output actuator in safety position for the output sensor break for the output operating state AUTOMATIC MANUAL The positioner which has the outputs option is available in the following versions one analogue output one analogue and two binary outputs two binary outputs According to the version of the positioner only the possible adjustable outputs ANALOGUE ANALOGUE BIN 1 BIN 2 or BIN 1 BIN 2 are indicated in the OUTPUT menu option OUTPUT 1 OUT ANALOG Configuration of the analogue output OUT BIN1 Configuration of the binary output 1 CD OUT BIN2
194. you leave the configuration level by pressing the right selection key are the changed param eters and settings saved save EEPROM 22 4 Factory settings of the process controller Function Factory setting Function Factory setting P CONTROL SETUP PARAMETER PV INPUT 4 20mA DBND PV SCALE PVmin 0 0 KP PVmax 100 0 TN SP INPUT internal TV P CO INIT bumpless XO FILTER Table 34 Factory settings process controller Type 8793 45 factory settings of the position controller be found in chapter Factory settings of the position controller Type 8792 8793 burkert Start up operation FLUID CONTROL SYSTEMS process controller Type 8793 MAN 1000118577 EN Version A Status RL released freigegeben printed 01 09 2009 22 5 Procedure for setting up a process control The process control cannot be implemented until the position controller has been automatically adjusted X TUNE To operate the positioner as a process controller implement the following steps in the indicated sequence Setting up the position controller Specify the basic settings of the positioner and implement automatic adjustment of the position con troller X TUNE Setting up the process controller Start the P CONTROL auxiliary function via the configuration menu in the main menu The P CONTROL function also inserts the PQ LIN and P TUNE function into the main menu o Implement the basic

Operating Instructions Type 8792, 8793 Positioner

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