RWF40... Compact Universal Controller
Contents
1. eese eene 25 Heating curve slope 2 otros i LIC peeccbhs 0AL t be aeta eaea Een NAL 26 Response threshold Q Lic AA AGA 27 Cold start of the planta ANGKAN NAAN ELAA 28 CC1B7865en 14 11 2000 3 56 6 1 6 1 1 6 2 6 2 1 6 2 2 6 2 3 6 2 4 6 2 5 6 3 6 3 1 6 4 6 4 1 8 1 8 2 8 3 8 3 1 8 3 2 8 3 3 8 3 4 8 3 5 8 3 6 8 3 7 8 3 8 8 3 9 8 3 10 9 1 9 2 10 4 56 Operation fe AA 29 Basic display 2 20 E 30 Meaning of the display and buttons sse rennen 30 Ur aliler 31 Changing th Setpolhts eo etie oni ed 31 Manual operation of a modulating burner eene 33 Manual operation of a 2 stage burner sesseeeeeeee ene 33 Start self Settirigiss note ree D e UT D ET d PO eese 34 Display of the software version and unit of actual value see 34 I cle 35 Enteringp rameters nnen entered t tee edere ll 35 enituit H 35 Changing the configuration code nennen eese 35 Parameter Settings eoo AA 36 jen yip iir qror M AA 38 CTI cInpuil5anea oe I incar ud eco QR Qa Le hope he png 38 C112 limit comparator controller type setpoint SP1 locking 40 C113 unit address dimensional unit out of range esses 44 SCL scaling of standard signal range start analog input 1 nnen 45 SCH scaling of sta2. 7865d066 0300 Measured value 42 56 CC1B7865en 14 11 2000 Landis amp Staefa Division Function Ik7 Function Ik8 Landis amp Staefa Division 8 Configuration The switching point is independent of the controller setpoint only the limit value AL determines the switching point Function relay is active when measured value gt limit value Example AL 50 HYSt 2 Measured value rising relay K6 switches on at 51 C Measured value falling relay K6 switches off at 49 C Output 4 A HYSt Measured value 7865d07e 0300 N L As for Ik7 but with inverted switching function Output 4 HYSt et 7865d08e 0300 Measured value AL HYSt switching differential AL limit value Chapter 7 Parameter settings CC1B7865en 14 11 2000 43 56 8 3 C113 instrument address dimensional unit out of range d Unit address Address 0 Address 1 Address 99 Decimal places dimensional unit No decimal place C One decimal place C No decimal place F One decimal place 9F Signal for out of range Limit comparators OFF Limit comparators ON The setting for the decimal place affects actual value dependent parameters 8 Configuration 78065po5 dpoo 0 0 0 1 9 9 uN O 44 56 CC1B7865en 14 11 2000 Landis amp Staefa Division 8 Configuration 8 3 1 SCL scaling of standard signal range start analog input 1 Ex
3. HYSt 2 Measured value rising relay K6 switches on at 76 C and off at 86 C Measured value falling relay K6 switches on at 84 C and off at 74 C Output 4 7865d106 0300 f Measured value W As for Ik1 but with inverted switching function Output 4 Measured value 7865d09e 0300 Ww HYSt switching differential of the window edges AL interval from setpoint half the window width Lower limit signaling Function relay inactive when measured value setpoint limit value Example w 80 C AL 10 HYSt 2 Measured value rising relay K6 switches on at 71 C Measured value falling relay K6 switches off at 69 C Output 4 A HYSt Measured value D 7865d04e 0300 Ww CC1B7865en 14 11 2000 41 56 8 Configuration Function Ik4 As for Ik3 but with inverted switching function Output 4 Measured value 7865d03e 0300 W HYSt switching differential AL interval from setpoint Chapter 7 Parameter settings Function Ik5 Upper limit signaling Function relay inactive when measured value gt setpoint limit value Example w 80 C AL 10 HYSt 2 Measured value rising relay K6 switches off at 91 C Measured value falling relay K6 switches on at 89 C Output 4 A Measured value 7865d05e 0300 w Function Ik6 As for Ik5 but inverted switching function Output 4 A HYSt
4. or Measurement of the outside temperature via analog input 3 Measurement of the external setpoint or a setpoint shift via analog input 2 L 7865f06e 1199 32 56 CC1B7865en 14 11 2000 Landis amp Staefa Division 6 Operation 6 2 2 Manual operation modulating burner Floating controller Modulating controller Thermostat mode Press for 5 seconds The LED above the hand symbol lights up Change the regulating unit s position with A and V Relay 2 opens the regulating unit as long as A is pressed Relay 3 closes the regulating unit as long as V is pressed The LEDs for the regulating units indicate if OPEN or CLOSE is activated Change the regulating unit s position with A and V The analog output delivers the regulating unit s position that was entered k Return to automatic operation by pressing for 5 seconds When manual operation is activated the regulating unit s position is set to 0 CE until another entry with the buttons is made Manual operation can only be activated if the thermostat function has set relay 1 to active If the thermostat function sets relay 1 to inactive during manual operation manual operation is terminated 6 2 3 Manual operation 2 stage burner Landis amp Staefa Division Press for 5 seconds Press A briefly Relay 2 is active relay 3 is inactive Analog output optional deliv
5. Current input DC 0 20 mA 4 20 mA io Mo 7865a06 1099 Voltage input DC 0 1 V 0 10 V U10 M10 7865a07 1099 Analog input 2 setpoint and setpoint shift Connection diagram Resistance potentiometer XB6 start Offset correction OFF2 M6 slider M6 end 7865a08 1099 Current input XB60 DC 0 20 mA 4 20 mA M60 7865a09 1099 Voltage input XU6 0 DC 0 1 V 0 10 V M60 7865a10 1099 Analog input 3 outside temperature Connection diagram Resistance thermometer in 2 wire circuit line B9 compensation through offset correction OFF3 tt a M9 7865a13 1099 Landis 84 Staefa Division CC1B7865en 14 11 2000 15 56 4 Electrical connections Binary inputs Terminals Connection diagram Operating mode selector D1 c Section 5 2 High fire operation D1 Setpoint shift changeover D2 D2 Sections 5 4 1 5 4 4 GNDO ll Common ground GND 7865a12 1099 Operating voltage interface Connection diagram Operating voltage L1 line AC 100 240 V 10 96 48 63 Hz N neutral Technical earth 7865a18 1099 Operating voltage for transducer G Q DC 24 V 30 mA G 7865a14 1099 Serial interface RxD TxD RS 485 RxD TxD GND 16 56 CC1B7865en 14 11 2000 Landis amp Staefa Division 4 4 Galvanic separation 4 Electrical connections The diagram shows the maximum potential differe
6. Landis amp Staefa Ni1000 DIN 43760 60 250 C Landis amp Staefa Ni1000 50 160 C Sampling time 6 seconds Potential free contact for operating mode changeover Modulating burner when the contact is open LED on the front is not lit 2 stage burner when the contact is closed LED on the front is lit Potential free contact for the following functions depending on the configuration No function Setpoint shift Setpoint changeover 11 2 Outputs 4 relay outputs 1 analog output optional and a transducer supply are provided as standard 11 2 1 Output 1 release of burner Relay output N O contact Contact rating AC 24 240 V 2 A at p f cos gt 0 6 Contact life gt 2 x 40 switching cycles at rated load Internal contact protection Varistor S07K275 11 2 2 Output 2 3 floating output 2 relay outputs N O contacts with a common pole for regulating unit open close Contact rating AC 24 240 V 2 A at cos q gt 0 6 Contact life gt 2 x 40 switching cycles at rated load Internal contact protection RC combination C 2 5 nF R 100 O 11 2 3 Output 4 limit comparator 52 56 Relay output N O contact Contact rating AC 24 240 V 2 A at cos q gt 0 6 Contact life 2 x 10 switching cycles at rated load Internal contact protection Varistor SO7K275 CC1B7865en 14 11 2000 Landis amp Staefa Division 11 2 4 Output 5 analog output option 11 T
7. actual boiler temperature reaches the required setpoint Qer is reset to O Temperature C 7865d19e 1199 Q 0 Actual value monitoring ensures that the switching frequency is kept low in the transitional range from low to high fire operation in order to reduce wear CC1B7865en 14 11 2000 27 56 5 Operating modes 5 7 Cold start of the plant When a heating system is switched off for a longer period of time the actual value will fall To achieve a faster control response the controller starts immediately in high fire operation as soon as the control deviation x w has dropped below a certain limit value This limit is calculated as follows Limit value 2 HYS1 HYS3 In that case response threshold Q is inactive independent of the operating mode and the controlled variable temperature pressure Example Operating mode modulating floating output HYS1 3K HYS3 2 45K w 60 C Limit value 2 3 5 22 8 16 K At an actual value below 44 C the heating up procedure starts immediately in high fire operation instead of in thermostat mode 7865d20 1099 28 56 CC1B7865en 14 11 2000 Landis amp Staefa Division 6 Operation Assignment of levels All levels can be accessed from the basic display via the button as shown in the diagram The upper actual value display red indicates the actual value and the parameter values for the various levels The setpoint and the parameters are i
8. connected in a 2 wire circuit Value range 1999 9999 digit Factory setting 0 digit Example Measured value Offset Displayed value 294 7 40 3 295 295 3 0 3 295 8 3 8 OFF2 actual value correction for analog input 2 Value range 1999 9999 digit Factory setting 0 digit 8 3 9 OFF3 actual value correction for analog input 3 Value range 1999 9999 digit Factory setting O digit 8 3 10 dF1 2 order digital filter for analog input 1 Value range for filter time constant 0 100 s Factory setting 1 seconds 46 56 CC1B7865en 14 11 2000 Landis amp Staefa Division 9 Self setting function 9 1 Self setting function in high fire operation 2 procedures Landis amp Staefa Division Ee tunE is only possible in high fire operation in the modulating burner mode The self setting function tunE is a pure software function unit that is integrated into the controller In the modulating mode of operation tunE tests the response of the controlled system to steps of the positioning signal according to a special procedure A complex control algorithm uses the response of the controlled system actual value to calculate and store the control parameters for a PID or PI controller set dt 0 The tunE procedure can be repeated as often as required Self setting Start Identification of the controlled system PID controller settings Controlled system 7865f09e 119
9. in area 2 In high fire operation a floating controller acts on an actuator through relay 2 open and relay 3 close 7865w07 1099 HYS3 HYS1 cs m Ct A M pn o Tq mi qd T v D wm 0 Ng 1 2 3 In area 3 the actual value exceeds the upper switch off threshold HYS3 and the controller switches off the burner B The controller only starts low fire operation when the level falls below the switch on threshold HYS1 again If Q is exceeded the controller switches to high fire operation A Section 5 6 Response threshold Q CC1B7865en 14 11 2000 Landis amp Staefa Division 5 Operating modes 5 2 2 Modulating burner analog output In diagram area 1 the thermostat function is active In area 2 the controller is controlling to the adjusted setpoint B 7865w05 1099 The positioning signal is delivered as a standard signal via the analog output 7 The modulating controller must be available and configured in the unit optional Section 8 2 C112 Limit comparator controller type setpoint SP1 locking 5 2 3 2 stage burner floating output In diagram area 1 the thermostat function is active In area 2 a 2 position controller acts on the second stage via relay 2 open and relay 3 close by switching it into the circuit at the switch on threshold HYS1 and out of circuit at the switch off threshold HYS2 B 7865w06 1099 H
10. the unit You could endanger your rights under the unit warranty Please contact us in such a case When returning modules assemblies or components to Landis amp Staefa the regulations of DIN EN 100 015 Protection of electrostatically sensitive devices must be observed Always use the appropriate ESD packaging for transport Please note that we cannot accept any liability for damage caused by ESD ESD electrostatic discharge The RWF40 is used primarily for controlling temperature or pressure in oil or gas fired heating plants It is a compact floating controller without position feedback that acts on the burner An external switch can be used to change it over to a 2 position controller for the control of 2 stage burners The built in thermostat function switches the burner on and off An adjustable response threshold is used to switch to a higher burner output high fire operation In modulating operation the RWF40 operates as a PIP controller In 2 stage operation the RWF40 provides control based on the set switching threshold The setpoint of the RWF40 can be adjusted either on the controller itself or externally Minimum and maximum limits for the setpoint can be set A self setting function is available as a standard feature The plug in controller module measures 96 x 48 x 127 5 mm and is especially suited for mounting in control panels The controller incorporates 2 4 digit 7 segment displays for the act
11. 2 parts 1 The markings in the text are arranged as continuous superscript numbers 2 The footnote text is placed at the bottom of the page and starts with a number and a period This symbol indicates that a required action is described The individual steps are indicated by an asterisk e g Press the A button Buttons are shown in a box Either symbols or text are possible If a button has multiple assignments the text shown is always the one that corresponds to the function currently used The representation of buttons combined with a plus sign means that first the button must be pressed and held down and then the other button CC1B7865en 14 11 2000 7 56 2 Type of unit 2 1 Type field Location The type field is glued onto the housing The type designation consists of operating voltage and type reference of the unit RWF40 000A97 Basic version with floating output RWF40 010A97 RWF40 001A97 With additional analog output RWF40 011A97 RWF40 002A97 With additional analog output and RWF40 012A97 RS 485 interface 1 Packing variants d The supply voltage connected must match the voltage given on the type field Factory setting The measured value range and the analog inputs are set at the factory c Chapter 8 Configuration Accessories Adapter frame ARG40 for plants where the predecessor model RWF32 was used which shall be converted to the RWF40 Bracket ARG41 for mounting the RWF40 on 3
12. 3 is configured for outside temperature C111 and the measured value is called up the actual value display red shows 1999 flashing When analog input 2 is configured C111 and the measured value is called up the process value display red shows 1999 flashing Actual value display red shows XXXXXX Setpoint display green shows 1999 flashing CC1B7865en 14 11 2000 Overrange or underage on analog input 1 The actual value is not being measured Controller initiates lockout gt Section 5 3 Safety shut down The limit comparator responds to analog input 1 according to the configuration C113 K Check the electrical connections for open circuit of sensor Overrange or underage on analog input 3 The outside temperature is not being measured The weather dependent setpoint is inactive Check the electrical connections for open circuit of sensors Overrange or underage on analog input 2 The external setpoint is not being measured Controller initiates lockout gt Section 5 3 Safety shut down K Check the electrical connections for open circuit of sensors Overrange or underage on analog input 2 The setpoint shift is not being measured Controller initiates lockout gt Section 5 3 Safety shut down Check the electrical connections for open circuit of sensor Landis amp Staefa Division 11 Technical data 11 1 Inputs 11 1 1 Analog inpu
13. 5 5 Weather dependent displacement setpoint shift This parameter is affected by the setting of the decimal place Landis amp Staefa Division CC1B7865en 14 11 2000 37 56 8 1 C111 inputs Analog input 1 Pt100 3 wire IEC 751 Pt100 2 wire IEC 751 Ni100 3 wire DIN 43760 Ni100 2 wire DIN 43760 Landis amp Staefa Pt1000 3 wire IEC 751 Landis amp Staefa Pt1000 2 wire IEC 751 Landis amp Staefa Ni1000 3 wire DIN 43760 Landis amp Staefa Ni1000 2 wire DIN 43760 Landis amp Staefa Ni1000 3 wire Landis amp Staefa Ni1000 2 wire NiCr Ni K Cu CuNi T NiCroSil NiSil N Fe CuNi J Standard signal DC 0 20 mA Standard signal DC 4 20 mA Standard signal DC 0 10 V Standard signal DC 0 1 V Analog input 2 No function External setpoint 1 KO resistance potentiometer External setpoint DC 0 20 mA External setpoint DC 4 20 mA External setpoint DC 0 10 V External setpoint DC 0 1 V Analog setpoint shift 1 KO resistance potentiometer Analog setpoint shift DC 0 20 mA Analog setpoint shift DC 4 20 mA Analog setpoint shift DC 0 10 V Analog setpoint shift DC 0 1 V 38 56 CC1B7865en 14 11 2000 8 IDNMA DOT BDO AANO NA WON O Configuration 7865p03 0200 BO OD NA ABA ON O Landis amp Staefa Division 8 Configuration Analog input 3 No function Outside sensor Landis amp Staefa Pt1000 2 wire IEC 751 Outside sensor Landi
14. 5 mm DIN rails conforming to DIN 46277 Dummy cover AVA10 200 109 for covering a control panel cut out for the RWFAO 8 56 CC1B7865en 14 11 2000 Landis amp Staefa Division 3 Installation 3 1 Installation site and climatic conditions The installation site should be free from vibrations dust and corrosive media The controller should be installed as far away as possible from sources of electromagnetic fields such as frequency converters or high voltage ignition transformers Relative humidity 95 non condensing Ambient temperature range 20 50 C Storage temperature range 40 70 C 3 2 Dimensions 91 5 Panel cut out to DIN 43 700 Gj 45 0 6 a 92 0 8 MAA 7865m01e 1200 Landis amp Staefa Division CC1B7865en 14 11 2000 9 56 3 Installation 3 3 Side by side If several controllers are mounted side by side or above one another in a control panel the minimum spacing must be observed namely 30 5 mm vertically and 10 5 mm horizontally 3 4 Mounting in a panel cut out Place the seal provided onto the controller housing The unit must be installed with the seal so that no water or oil can penetrate d the housing Insert the controller from the front into the panel cut out 7865z08 0200 At the rear of the panel push the fixing elements in
15. 9 The tunE function uses 2 different methods that are automatically selected depending on the dynamic state of the actual value and the difference from the setpoint at the start tunE can be started from within any dynamic actual value seguence If there is a large difference between actual value and setpoint when tunE is activated a switching line is established around which the controlled variable performs forced oscillations during the self setting procedure The switching line is set at such a level that the actual value should not exceed the setpoint Switching level 7865d12e 1199 With a small deviation between setpoint and actual value for instance when the controlled system has stabilized a forced oscillation is performed around the setpoint CC1B7865en 14 11 2000 47 56 Conditions 48 56 9 Self setting function 7865d13 1099 t The controlled system data which are recorded for the forced oscillations are used to calculate the controller parameters rt dt Pb 1 and a filter time constant for actual value filtering that is optimized for this controlled system High fire operation in the modulating burner mode The thermostat function relay 1 must be constantly activated otherwise tunE will be cancelled and no optimized controller parameters will be adapted The above mentioned actual value oscillations during self setting may not exceed the upper threshold of the the
16. D2 closed D2 open SPH The values of dSP and SP1 are entered at the user level c Section 6 2 User level SPL Connection of binary input D2 c Section 4 2 Assignment of terminals 7865102e 1200 Active setpoint 24 56 CC1B7865en 14 11 2000 Landis amp Staefa Division 5 Operating modes 5 5 Weather dependent setpoint shift Parallel displacement of heating curve Landis amp Staefa Division The RWF40 can be configured in such a way that if a Landis amp Staefa Ni1000 outside sensor e g QAC22 is connected a weather dependent setpoint shift is implemented The minimum and maximum setpoint values can be set by the lower setpoint limit SPL and the upper setpoint limit SPH Parameter P can be used to apply a parallel displacement to the heating curve d Each RWF40 must have its own separate outside sensor connected no parallel connection Ee This function has been optimized for space heating combined with domestic hot water heating Chapter 7 Parameter settings 160 140 120 8 SPH Heating curve slope o o Boiler temperature setpoint C 8 SPL 40 12 5 15 17 5 20 7865d02e 1199 Outside temperature C CC1B7865en 14 11 2000 25 56 5 5 1 Heating curve slope 26 56 5 Operating modes Slope H of the heating curve can be used to adjust the setpoint in response to the outside temperat
17. F EF eee HN AA RAI CF HR FI FFY TN YA kaan AE 52 Output 1 release of burn ii ceu eo eue uto tette tas 52 Output 2 3 floating output nennen nennen 52 Output 4 limit comparator eire diee eee e dc ei deer 52 Output 5 analog output option eene 53 Transducar supply eie tedio it dui dut 53 Interface RS 485 optional sse enne nennt 53 General ratings aa nete erre een roan beu aUe dn Dee sober re den enden dog 53 Measured value accuracy riori ironion i iri rere a erare i rea et aaaea ea Oa 54 Measured value circuit monitoring eene 54 Environmental conditions aaa 54 Current Settings eet 55 Process data HN AA 55 Parameter level AGANG 55 Configuration level NA EE et Iu ei 56 CC1B7865en 14 11 2000 5 56 1 1 General notes A 1 2 Description Use Control Options 6 56 CE d 1 Introduction Please read this User Manual before starting up the controller Keep the Manual in a safe place that is accessible to all users at all times Please help us improve the Manual Your suggestions will be welcome All necessary settings and where required settings inside the unit are described in this User Manual for controller software version 126 01 01 gt Section 6 2 5 Display software version and dimensional unit Should any difficulties arise during commissioning you are asked not to carry out any unauthorized manipulations on
18. SIEMENS RWFA40 Compact Universal Controller optimized for temperature and pressure control through the control of modulating or multi stage burners User Manual The RWF40 controller and this User Manual are intended for use by OEMs which integrate the controller into their products Siemens Building Technologies CC1B7865en Landis amp Staefa Division 14 11 2000 2 56 CC1B7865en 14 11 2000 Landis amp Staefa Division Contents 1 1 1 1 2 1 3 1 3 1 1 3 2 1 3 3 2 1 3 1 3 2 3 3 3 4 3 5 3 6 4 1 4 2 4 3 4 4 5 1 5 2 5 2 1 5 2 2 5 2 3 5 2 4 5 3 5 4 5 4 1 5 4 2 5 4 3 5 4 4 5 5 5 5 1 5 6 5 7 Landis amp Staefa Division INtFOHUEHION AA m 6 IMIIEBNIDMIII 6 Description ccc erret ce et E deditus 6 Typographical conventions mnsan 7 Warming SyMDOIS NE synnu wneu dn pA AN pan 7 Notification Symbol LC 7 Presentaltiori iiie essed de NIN UPIN AD NUNAL I ana Rea BALANG LA Pn ETE ERR 7 Type of UNA ANAN CU ua ie Desc ted iei bise DW eret Deed 8 Type field 5 iieri nde ene orcinec ie dices 8 Installations NEN FON HEN HF FFF FFURF 9 Installation site and climatic conditions cerent 9 n ree uei Te Y SN a 9 Side by Side mounting 1 cese reser eese eese eee eene eren nen anA aoan Rapana nnne nnn 10 Mounting in a p
19. X X5XX External setpoint C111 XXX2 c Section 5 4 4 Exter C111 XXX0 C111 XXX1 nal setpoint binary Setpoint changeover setpoint shift D2 closed Setpoint SP1 is entered at the user level c Section 6 2 User level Connection of binary input D2 SPL c Section 4 2 Assignment of terminals 7865f03e 1100 Active setpoint CC1B7865en 14 11 2000 Landis amp Staefa Division 5 Operating modes 5 4 3 Setpoint SP1 analog binary setpoint shift C111 XX1X XX3X Outside sensor C111 and C112 are CS described in chapter 8 Heating curve slope H Setting 0 0 4 0 Weather dependent setpoint shift No Yes C112 XXOX o C112 XX1X A C111 X6XX XAXX C111 XXX1 c Sections 5 4 1 and Ai C111 XXX0 Setpoint changeover D2 closed D2 open The values dSP and SP1 are entered at the user level c Section 6 2 User level 7865f04e 1100 Connection of binary input D2 c Section 4 2 Assignment of terminals Active setpoint Landis amp Staefa Division CC1B7865en 14 11 2000 23 56 5 Operating modes 5 4 4 External setpoint binary setpoint shift C111 and C112 are CE described in chapter 8 C111 X1XX X5XX C111 XXX1 c Sections 5 4 1 and 5 4 2 Setpoint changeover C111 XXX2 Binary setpoint shift C111 XXX0
20. YS3 HYS2 HYS1 1 In area 3 the actual value exceeds the upper switch off threshold HYS3 and the controller shuts down the burner B The controller only starts low fire operation when the level falls below the switch on level HYS1 again If Q is exceeded the controller switches to high fire operation A Section 5 6 Response threshold Q Landis amp Staefa Division CC1B7865en 14 11 2000 19 56 5 Operating modes 5 2 4 2 stage burner analog output In this case a standard binary signal switches the second stage into circuit with analog output X1 on reaching the switch on threshold HYS1 and switches it out of circuit at the lower switch off threshold HYS2 B 7865w04 1099 The modulating controller must be available and configured in the unit optional c Section 8 2 C112 Limit comparator controller type setpoint SP1 locking 5 3 Safety shut down Functions In the event of a sensor failure the controller cannot monitor the actual value of the boiler temperature analog input 1 A safety shut down is automatically carried out to guard against overheating This also applies to the acquisition of the external setpoint at analog input 2 Burner off Floating output for closing the regulating unit Self setting is ended Manual operation is ended 5 4 Pre defined setpoint 20 56 The setpoi
21. al connections Release of burner Output 1 Relay N O contact Floating output Output 2 Relay regulating unit open Output 3 Relay regulating unit closed Limit comparator Output 4 Relay N O contact Power supply measuring transducer DC 24 V 30 mA short circuit proof Analog output optional Output 5 Analog output DC 0 10 V DC 0 20 mA 14 11 2000 DC 4 20 mA Serial port optional RS 485 MOD bus protocol Baud rate 9600 13 56 4 Electrical connections 4 3 Assignment of terminals Electrical connections may only be made by qualified personnel Relay 1 release of burner Contact protection Varistor SO7K275 Q13 N O contact 7865a11 1199 Relay 2 regulating unit opens Y1 N O contact Contact protection RC unit O common pole Relay 3 regulating unit closes Contact protection RC unit Y2 N O contact 7865a16 1099 Relay 4 limit comparator Contact protection Varistor S07K275 Q63 N O contact Analog output optional DC 0 4 20 mA 0 2 10 V 7865a17 1099 14 56 CC1B7865en 14 11 2000 Landis amp Staefa Division 4 Electrical connections Analog input 1 actual value Terminals Connection diagram Thermocouple Resistance thermometer in 3 wire circuit 11 7865a04 1099 G1 11 Resistance thermometer in 2 wire circuit line M1 M1 compensation through offset correction OFF1 G1 G1 7865a05 1099 11 M1
22. ample SCL 20 SCH 100 C 0 mA start corresponds to a measured value of 20 C Value range 1999 9999 digit Factory setting 0 digit 8 3 2 SCH scaling of standard signal range end analog input 1 Example SCH 80 SCL 0 C 20 mA end corresponds to a measured value of 80 C Value range 1999 9999 digit Factory setting 100 digit 8 3 3 SCL2 scaling of standard signal range start analog input 2 Example SCL2 20 0 mA corresponds to a measured value of 20 C as already described Value range 1999 9999 digit Factory setting O digit Landis amp Staefa Division CC1B7865en 14 11 2000 45 56 8 Configuration 8 3 4 SCH2 scaling of standard signal range end analog input 2 Example SCH2 80 20 mA corresponds to a measured value of 80 C as already described Value range 1999 9999 digit Factory setting 100 digit 8 3 5 SPL lower setpoint limit The controller restricts the setpoints to the value that is set Value range 1999 9999 digit Factory setting 0 digit 8 3 6 SPH upper setpoint limit The controller restricts the setpoints to the value that is set Value range 1999 9999 digit Factory setting 100 digit 8 3 7 OFF1 actual value correction for analog input 1 The actual value correction can be used for correction of the measured value upwards or downwards by a specific amount It is also used for line compensation when resistance thermometers are
23. and off like a thermostat This control mode is therefore also known as thermostat function An adjustable switching differential ensures that the switching frequency of the burner can be selected to reduce wear Modulating and 2 stage operation alee Actual value between HYS1 and V HYS1 HYS3 Cy A v 7865w03 1099 5 2 High fire operation Operating mode changeover High fire operation means that large amounts of heat are drawn from the boiler so that the burner is on all the time If the heating load during the thermostat operation rises to a level where the actual value begins to fall below the switch on threshold HYS1 the controller does not immediately switch over to a higher burner output but first makes a dynamic test of the control deviation and switches to the higher output only when an adjustable threshold Q is exceeded A Section 5 6 Response threshold Q n high fire operation depending on the application the burner can be fired in modulating or 2 stage operation with a larger amount of fuel than in low fire operation The binary input D1 can be used to switch between modulating and 2 stage operation When the contact is open modulating burner operation When the contact is closed 2 stage burner operation 5 2 1 Modulating burner floating output 18 56 In diagram area 1 the thermostat function is active The modulating mode of burner operation is shown
24. anel CUt OUt eese nennenennenenenneneneenneennnenensenennenennnveneneenn 10 Cleaning the front panel 2 KAN INAANAK 11 Removing the controller module eese eene eene nnne 11 Electrical Cconnect rns aide ws sisi cecus s us pe dana MO 12 Installation notes cunei eect eee 12 Block diagram 255 a daa nu da teven ence nnau enn dece aan tekende haan 13 Assighment of terminals 1 cornetto eter tiet deerde heit nend bedinde Poe rinna ader sen 14 Galvanic separation ANAN AGA Aa 17 Operating Modes ANAND 18 Low fire operation ui ao du rure eere RAR 18 High fire operation nece rer teet titer teet uydin 18 Modulating burner floating output ennen nerenverennerenerenneeeenverenvenen 18 Modulating burner analog output eene 19 2 stage burner floating output nennen nenne 19 2 stage burner analog OUIPUt nnee nennen eene 20 Safety shutdown anas BNG te PAKITA Ca sre vaa cu soe AEAF Du ywn wadn OO 20 Pre defined setpoilt iiir caeci eon riter incre rec au ue es ione rese Dave dra do Pcr ab cane 20 Setpoint changeover SP1 SP2 analog setpoint shift nennen 21 Setpoint changeover SP1 external setpoint sssssssssssssssss 22 Setpoint SP1 analog binary setpoint shift 23 External setpoint binary setpoint shift sees 24 Weather dependent setpoint shift
25. cking Proportional band 999 9 digit Affects the P response of the controller Affects the I response of the controller With rt O the controller has no I response Integral action time 0 9999 s Dead band neutral 0 999 9 digit zone For floating output Y db 100 7865d11 1099 e Derivative time 0 9999 s Affects the D response of the controller Within dt 0 the controller has no D response For modulating controllers dt rt 4 or 0 must be entered This parameter is affected by the setting of the decimal place 36 56 CC1B7865en 14 11 2000 Landis amp Staefa Division 7 Parameter settings The parameter is shown on the lower setpoint display green and the value on the upper actual value display red 788bp06 0200 Parameter Display Value range Factory setting Actuator running 10 3000 s 15s Utilized running time of the valve for time floating controllers Switch on utes eld HYS1 199 9 digit Section 5 5 1 Heating curve slope for burner stage II Switch off threshold HY S2 0 HYS3 digit gt Section 5 2 High fire operation stage II Upper switch off HYS3 0 999 9 digit 5 c Section 5 2 High fire operation threshold Response threshold KAKA 0 999 9 MIE c Section 5 6 Response threshold Heating curve slope curve slope EE Section 5 5 1 gt Section 5 5 1 Heating curve slope curve slope d 90 E Section
26. echnical data Analog output electrically isolated from the analog inputs AU AC 30V AU DC 50V Standard signals Load burden DC 0 10 V short circuit proof Load gt 500 O DC 0 20 mA Burden lt 500 O DC 4 20 mA Burden lt 500 Q Accuracy 10 25 96 50 ppm K 11 2 5 Transducer supply DC 24 V 30 mA short circuit proof 11 2 6 Interface RS 485 optional Baud rate Protocol Unit address 9600 MOD bus 1 99 Galvanic separation between supply voltage analog inputs and outputs c Section 4 3 Galvanic separation 11 3 General ratings Weight Data backup Operating voltage Power consumption Electrical connection Electrical safety Case Landis amp Staefa Division CC1B7865en approx 430 g EEPROM AC 100 240 V 10 Yo 48 63 Hz approx 5 VA at the rear via pug in screw terminal strips angled at 45 to EN 60730 mounting depth 130 mm plastic body with rear panel self extinguishing flammability class UL94 VO seal between case and control panel 14 11 2000 53 56 11 Technical data 11 3 1 Measured value accuracy Resolution 15 bit Measured value accuracy Ambient temperature error Resistance thermometer lt 0 05 96 lt 50 ppm K lt 0 25 96 lt 100 ppm K Standard signals 0 1 96 lt 100 ppm K The values include the linearization tolerances 11 3 2 Measured value circuit monitoring Transducer Probe brea
27. ers DC 10 V The regulating unit opens k Or press V briefly Relay 2 is inactive relay 3 is active Analog output optional delivers DC 0 V The regulating unit closes k Return to automatic operation by pressing for 5 seconds If the thermostat function sets relay 1 to inactive during manual operation manual operation is terminated CC1B7865en 14 11 2000 33 56 6 Operation 6 2 4 Start self setting k Start self setting with Md v Cancel with A mews v P 7865210 1199 When tunE stops flashing self setting has stopped Accept the parameters that have been determined by pressing A press the button for at least 2 seconds ce It is not possible to start tunE in manual operation or thermostat operation 6 2 5 Display of the software version and unit of actual value k Press A Available units C F and for standard signals ro 7865z11 1199 34 56 CC1B7865en 14 11 2000 Landis amp Staefa Division 6 3 Parameter level 6 3 1 Entering parameters 6 4 Configuration level 6 Operation The parameters involved in the adaptation of the controller to the controlled system are set here after the system has been started up Within the level you can proceed to the next parameter by pressing E C The display of the individual parameters depends on the type of controller The entry and alteration of parameters is made through a con
28. k Short circuit Resistance thermometer Thermocouples DC 0 10 V DC 0 20 mA Mp p TERT DC 4 20 mA is not detected X is detected and 1999 appears on the display c Chapter 10 What to do if 11 3 3 Environmental conditions Permissible ambient temperature range 20 450 C short time up to 60 C Permissible storage temperature range 40 70 C Climatic conditions Relative humidity lt 95 non condensing Degree of protection to EN 60529 Front IP 65 Rear IP 20 Electromagnetic compatibility EMC To NAMUR recommendation NE 21 EN 50 081 part 1 EN 50 082 part 2 54 56 CC1B7865en 14 11 2000 Landis amp Staefa Division 12 Actual settings 12 1 Process data Parameter Display Value range Factory setting Setpoint 1 SPL SPH Outside temperature optional TA C Section 8 1 C111 Inputs Pre definition of external setpoint EN SPL SPH OO These parameters are affected by the setting for the decimal place 12 2 Parameter level Parameter Display Value range Factory setting AL Limit value of limit comparator EC o 1999 9999 digit Switching differential for limit HYSt 0 999 9 digit comparator Proportional band 0 1 999 9 digit 0 9999 s Rem lalo a m pe a em a 0 50 1 Actuator running time 5s 5 Switch on threshold burner HYS1 0 199 9 digit stage II HYS2 0 HYS3 digit 3 Upper switch off thresho
29. ld HYS3 0 999 9 digit 5 4 1 Switch off level stage II Response threshold a 0 999 9 Parallel displacement EM 90 90 These parameters are affected by the setting for the decimal place Landis amp Staefa Division CC1B7865en 14 11 2000 55 56 12 3 Configuration level Parameter Analog input 1 2 and 3 setpoint changeover shift Limit comparator controller type setpoint 1 locking Unit address decimal place unit signal for out of range Measured value range start analog input 1 Measured value range analog input 1 Measured value range analog input 2 Measured value range analog input 2 Lower setpoint limit Upper setpoint limit Actual value correction analog input 1 Actual value correction analog input 2 Actual value correction analog input 3 Filter time constant for digital filter analog input 1 12 Actual settings Display Factory setting SCL2 1 These parameters are affected by the setting for the decimal place Siemens Building Technologies AG Landis amp Staefa Division Berliner Ring 23 D 76347 Rastatt Tel 0049 7222 598 0 Fax 0049 7222 53182 2000 Siemens Building Technologies AG http www landisstaefa com 56 56 CC1B7865en 14 11 2000 Landis amp Staefa Division
30. nces that may exist between the function modules in the controller 3 analog inputs Input 1 Actual value for Pt100 Ni100 Landis amp Staefa Pt1000 Landis amp Staefa Ni1000 thermocouples or standard signals Input 2 External setpoint setpoint shift for resistance 0 1kQ or standard signals Input 3 Outside temperature for Landis amp Staefa Pt1000 Landis amp Staefa Ni1000 2 binary inputs for potential free contacts D1 operating mode changeover D2 setpoint shift changeover Transducer supply DC 24 V 30 mA short circuit proof Analog output optional Output 5 Analog output DC 0 10 V DC 0 20 mA 4 20 mA Serial interface RS 485 optional MOD bus protocol Baud rate 9600 Technical earth TE 7865f07e 0301 Landis 84 Staefa Division CC1B7865en Limit comparator Output 4 Relay N O contact Release of burner L1 N Output 1 Relay N O contact Floating output L1 N Output 2 Relay reg unit opens Output 3 Relay reg unit closes Operating voltage L1 N AC 100 240 V 10 96 48 63 Hz Max insulation voltages DC 50V AC 400 V AC 4000 V 14 11 2000 17 56 5 1 Low fire operation Thermostat function 5 Operating modes Low fire operation means that only small amounts of heat are drawn from the boiler A 2 position controller maintains the setpoint switching the burner on
31. ndard signal range end analog input 1 nnen 45 SCL2 scaling of standard signal range start analog input 2 sss 45 SCH2 scaling of standard signal range end analog input 2 nnen 46 SPL lower setpoint limit este dia roe p IER Pe ete tU eet rd 46 SPH upper setpointllitnit casted aa Duet cenae Doa fo at cue unt ot 46 OFF1 actual value correction for analog input 1 nnn sss 46 OFF2 actual value correction for analog input 2 46 OFF3 actual value correction for analog input 3 46 dF1 2 order digital filter for analog input 1 46 Self setting FUNCTION NANANA e nce careo raa ouis DDU RNA 47 Self setting function in high fire operation eere 47 Checking the controller parameters eee 49 What t00 me E 50 numbers are flashing on the display eese 50 CC1B7865en 14 11 2000 Landis amp Staefa Division 11 11 1 11 1 1 11 1 2 11 1 3 11 1 4 11 1 5 11 2 11 2 1 11 2 2 11 2 3 11 2 4 11 2 5 11 2 6 11 3 11 3 1 11 3 2 11 3 3 12 12 1 12 2 12 3 Landis amp Staefa Division Technical datae ie rea ose rab aset eno 51 lene ce 51 Analog input 1 actual value es eer aa AA 51 Analog input 2 external setpoint setpoint shift 51 Analog input 3 outside temperature sseeenenenn enne 52 Binary input D T n eee ee An iU ede ANG beendet 52 Binary input D25 iive So aan uiia 52 OUtpUls F
32. ndicated in the lower setpoint display green BASIC DISPLAY Eu or time out approx 30 s CONFIGURATION LEVEL PGM mb 7865f08e 1299 After using PGM to step through all the parameters of a level an automatic return occurs after the last parameter has been confirmed Landis amp Staefa Division CC1B7865en 14 11 2000 29 56 6 Operation 6 1 Basic display The diagram shows the RWF40 after switching on power This condition is called the basic display The actual value and the currently active setpoint are shown here Manual operation self setting the user parameter and configuration levels can be activated from here 6 1 1 Meaning of the display and buttons Release of burner Regulating unit CLOSE 1st stage Regulating unit OPEN 2nd stage 2 stage operation Actual value display red Setpoint display green Manual operation Limit comparator Decrease value Increase value PGM button EXIT button 7865p02e 0200 30 56 CC1B7865en 14 11 2000 Landis amp Staefa Division Initialization Manual operation Self setting function Actual value display flashes 2 stage operation Time out 6 2 User level 6 2 1 Changing the setpoints Landis amp Staefa Division 6 Operation All displays are lit up the setpoint display flashes for about 10 seconds after switching on power The actual value is indicated on the upper display The LED for manual operation is on Depe
33. nding on the operating mode and the type of controller the setpoint or the level of the manual actuator position is shown on the setpoint display green C Section 6 2 2 Manual operation of a modulating burner The actual value is shown on the actual value display red and the text tunE flashes on the setpoint display green Section 9 1 Self setting function in high fire operation c Chapter 10 What to do if Section 5 2 High fire operation If there is no action by the operator the controller returns automatically to the basic display after about 30 seconds This level is started from the basic display Setpoints SP1 SP2 dSP can be altered and the analog inputs E2 external setpoint setpoint shift and E3 outside temperature can be displayed To alter SP1 SP2 or dSP Change to the user level with k Alter the setpoint SP1 with W and A Change to setpoint SP2 or dSP with k Alter the setpoint SP2 or dSP with W and A k Return to the basic display with or automatically by time out after about 30 s After 2 seconds the value that is set will automatically be adopted The value can only change within the permitted value range CC1B7865en 14 11 2000 31 56 6 Operation User level Display depends on code 111 Depending on the configuration of binary input 2 dSP Sp2
34. nt is pre selected within pre set limits with the buttons an external analog signal or the interface It is possible to shift the setpoint by either an analog or a binary signal to influence it according to the weather or to change it with an external contact CC1B7865en 14 11 2000 Landis amp Staefa Division 5 Operating modes C111 XX1X XX3X Outside sensor C111 and C112 are CS described in chapter 8 Y Heating curve slope Setting 0 0 4 0 5 4 1 Setpoint changeover SP1 SP2 analog setpoint shift Weather dependent setpoint shift No Yes C112 XX0X a 5 C112 XX1X O C111 XXX2 gt Section 5 4 4 Exter C1 11 XXX1 nal setpoint binary setpoint shift Setpoint changeover O D2 open O C111 XXX0 Setpoint SP2 D2 closed C111 X6XX XAXX Analog setpoint shift The setpoints SP1 and SP2 are entered at the user level c Section 6 2 User level SPL Connection of binary input D2 H c Section 4 2 Assignment of terminals 7865f05e 1100 Active setpoint Landis amp Staefa Division CC1B7865en 14 11 2000 21 56 5 Operating modes 5 4 2 Setpoint changeover SP1 external setpoint 22 56 C111 XX1X XX3X Outside sensor C111 and C112 are i CS described in chapter 8 Heating curve slope H Setting 0 0 4 0 Weather dependent setpoint shift No Yes C112 XXOX o C112 XX1X C111 X1X
35. onnections may only be carried out by qualified personnel If contact with live parts is possible while working on the unit the controller must be disconnected from the power supply at both poles An internal current limiting resistor interrupts the supply voltage in the event of a short circuit The external fusing should not be rated above 1 A slow The output relays must be fused for a maximum of 2 A to prevent contact welding in the event of a short circuit in the load circuit Section 11 2 Outputs No other loads may be connected to the supply terminals of the controller The electromagnetic compatibility and interference suppression levels conform to standards and regulations listed under Technical data Chapter 11 Technical data Input output and supply cables should be routed separately not parallel to one another Arrange sensor and interface cables as twisted and screened cables and do not run them close to power cables or components Ground the screening to the controller at one end to the TE terminal Earth the TE terminal of the controller to the protective earth This cable must have a cross sectional area that is at least as large as that of the supply cables Earthing cables must be wired in a star configuration to a common earthing point connected to the protective earth of the supply Earthing cables may not be looped from one controller to another The unit is not suitable for installation in a
36. reas with an explosion hazard Incorrect settings on the controller setpoint data of parameter and configuration levels can affect the proper functioning of the following process or lead to damage Safety devices that are independent of the controller such as overpressure relief valves or temperature limiters monitors should therefore always be provided and only be capable of adjustment by qualified personnel Please observe the appropriate safety regulations Since self setting cannot be expected to handle all possible control loops the stability of the actual value that is produced should be checked The analog inputs of the controller may not exceed a maximum voltage of AC 30 V or DC 50 V against TE c Section 4 3 Galvanic separation 12 56 CC1B7865en 14 11 2000 Landis amp Staefa Division 4 2 Block diagram Landis amp Staefa Division 3 analog inputs Input 1 Actual value for Pt100 Ni100 Landis amp Staefe Pt1000 Landis amp Staefa Ni1000 thermocouples or standard signals Input 2 External setpoint setpoint shifting for 0 1 kO resistor or linearized standard signals Input 3 Outside temperature for Landis amp Staefa Pt1000 Landis amp Staefa Ni1000 2 binary inputs For potential free contacts Input 1 Operating mode changeover Input 2 Setpoint shifting changeover Power supply AC 100 240 V 10 96 48 63 Hz 7865f01e 0301 CC1B7865en 4 Electric
37. rmostat function increase if necessary and lower the setpoint CC1B7865en 14 11 2000 Landis amp Staefa Division 9 Self setting function 9 2 Checking the controller parameters The optimum adjustment of the controller to the controlled system can be checked by recording a start up sequence with the control loop closed The following diagrams indicate possible incorrect adjustments and their correction Example The response to a setpoint change is shown here for a 3 order controlled system for a PID controller The method used for adjusting the controller parameters can however also be applied to other controlled systems A favorable value for dt is rt 4 PB too small PB too large X X t t 7865d17 1099 7865d15 1099 rt dt too small rt dt too large X X t t 7865d16 1099 7865d14 1099 Optimum adjustment 7865d18 1099 Landis amp Staefa Division CC1B7865en 14 11 2000 49 56 10 1 numbers are flashing on the display 10 What to do if This is an indication that a measured value is not being acquired correctly CE The detection of measured value range crossings depends on the type of sensor used gt Section 11 3 2 Measured value circuit monitoring Display Descripion Cause controller behavior remed 7865p09 0200 7865p07 0200 50 56 Actual value display red shows 1999 flashing Setpoint display shows the setpoint When analog input
38. s amp Staefa Ni1000 2 wire DIN 43760 Outside sensor Landis amp Staefa Ni1000 2 wire 0 1 2 3 Function of binary input D2 No function 0 Setpoint changeover 1 Setpoint shift binary 2 Factory setting Landis amp Staefa Division CC1B7865en 14 11 2000 39 56 8 Configuration 8 2 C112 limit comparator controller type setpoint SP1 locking Limit comparator No function Ik off Ik1 input 1 Ik2 input 1 Ik3 input 1 Ik4 input 1 Ik5 input 1 Ik6 input 1 Ik7 input 1 Ik8 input 1 Ik7 input 2 Ik8 input 2 Ik7 input 3 Ik8 input 3 0 1 2 3 4 5 6 7 8 9 A b C Controller type Floating controller Modulating controller DC 0 20 mA Modulating controller DC 4 20 mA Modulating controller DC 0 10 V ome eo Setpoint SP1 SP1 via buttons 0 SP1 with outside sensor analog input 3 must be configured 1 Locking No locking Locking of configuration level Locking of parameter level Locking of buttons d Locking of the buttons can be entered only once and adapted with Ey After this all button operations are locked and can only be enabled again by the manufacturer On O 40 56 CC1B7865en 14 11 2000 Landis amp Staefa Division Function Ik1 Function Ik2 Function Ik3 Landis amp Staefa Division 8 Configuration Window function relay K6 is active when the measured value lies within a window around the setpoint w Example w 80 C AL 5
39. t 1 actual value For resistance thermometers thermocouples or standard signals with 2 order digital filter configurable Resistance thermometers _ In 2 wire or 3 wire circuit Measured value range Pt100 Landis amp Staefa Pt1000 IEC 751 200 850 C Ni100 Landis amp Staefa Ni1000 DIN 43760 60 250 C Landis amp Staefa Ni1000 50 4160 C Line resistance lt 30 Q Line compensation Not required for a 3 wire circuit When using a resistance thermometer in a 2 wire circuit line compensation can only be made by means of the offset correction Thermocouples Cold junction temperature internal I mM E drop AUe IDC0 10V 0 10 V Rs2MO 2MO Sampling time 210 ms 11 1 2 Analog input 2 external setpoint setpoint shift Resistance measured value 0 1 kQ standard signals without linearization Potentiometer With 2 wire circuit R 0 1 KQ Standard signals Internal resistance Ri Voltage drop AUe DC 0 10 V DC 0 20 mA DC 4 20 mA Sampling time 630 ms Landis amp Staefa Division CC1B7865en 14 11 2000 51 56 11 Technical data 11 1 3 Analog input 3 outside temperature Resistance thermometer 11 1 4 Binary input D1 11 1 5 Binary input D2 For resistance thermometers in a 2 wire circuit with fixed filter time constants 21 h 18 min for the weather dependent setpoint enable Measured value range Landis amp Staefa Pt1000 200 850 C
40. tinuous alteration of the value The longer you keep the button pressed the faster the rate of change becomes Increase value by pressing A Reduce value by pressing W Accept entry by pressing or k Cancel entry by pressing After 2 seconds the value that is set will automatically be accepted The value can only change within the permitted value range Chapter 7 Parameter settings The settings made here are those required for commissioning a specific installation and therefore rarely need to be altered such as acquisition of measured value or type of controller Within the level you can proceed to the next parameter by pressing E 6 4 1 Changing the configuration code Landis amp Staefa Division k Select position by pressing V position flashes k Alter value by pressing A 3k Accept code by pressing or ak Cancel entry by pressing c Chapter 8 Configuration CC1B7865en 14 11 2000 35 56 7 Parameter settings The parameter is shown on the lower setpoint display green and the value on the upper actual value display red Limit value for limit 1999 9999 comparator Measured value c Chapter 8 2 C112 limit comparator controller type setpoint SP1 locking Switching differential 0 999 9 digit for limit comparator 1 Switching differential at the edges for the limit comparators c Chapter 8 2 C112 limit comparator controller type setpoint SP1 lo
41. to the guide slots from the side or top The flat faces of the fixing elements must lie against the housing K Place the fixing elements against the rear of the panel and tighten them evenly with a screwdriver 10 56 CC1B7865en 14 11 2000 Landis amp Staefa Division 3 Installation 3 5 Cleaning the front panel The front panel can be cleaned with normal washing and rinsing agents or detergents It is not resistant to corrosive acids caustic solutions and abrasive cleaners or cleaning with high pressure cleaners 3 6 Removing the controller module The controller module can be removed from the housing for servicing The rules of DIN EN 100 015 Protection of electrostatically sensitive devices A must be adhered to for internal work on the controller No liability will be Alas accepted for damage caused by electrostatic discharge 7865z09 0200 K Press the ribbed surfaces together at top and bottom and pull out the controller module Landis amp Staefa Division CC1B7865en 14 11 2000 11 56 4 1 Installation notes Safety regulations Fusing A Interference suppression Incorrect use 4 Electrical connections The choice of cable the installation and the electrical connections of the controller must conform to the regulations of VDE 0100 Regulations for the installation of power circuits with nominal voltages below AC 1000 V or appropriate local regulations The electrical c
42. ual value red and setpoint green A limit comparator is also provided and its switching behavior can be set on the configuration level A selection can be made between 8 different limit comparator functions An RS 485 interface is used for integration into a data network Output 5 can be used as an analog output for modulating or 2 stage operation All connections are made via screw terminals at the rear of the unit CC1B7865en 14 11 2000 Landis amp Staefa Division 1 Introduction 1 3 Typographical conventions 1 3 1 Warning symbols A d Caution Danger Caution A Atos 1 3 2 Notification symbols Note CE gt Reference abc Footnote Action 1 3 3 Presentation Buttons PGM Button EXIT 4 combi nations Landis amp Staefa Division The signs for Danger and Caution are used in this Manual under the following conditions This symbol is used where there may be a danger to personnel if the instructions are disregarded or not strictly followed This symbol is used where there may be damage to equipment or data if the instructions are disregarded or not strictly followed This symbol is used if pre cautions must be taken in handling electrostatically sensitive components This symbol is used to draw your special attention to a remark This symbol refers to additional information in other Manuals chapters or sections Footnotes are comments referring to specific parts of the text They consist of
43. ure as shown in the diagram The common origin of the heating curves is set at 20 C 20 C The effective range of the weather adjusted setpoint is restricted by the setpoint limits SPH and SPL H larger Setpoint C HYS3 SPHL H smaller Outside temperature C 7865d01e 1199 HYS1 is the switch on point for the burner and HYS3 is the switch off point As already described they act with the set shift relative to the weather controlled setpoint c Section 5 2 1 Modulating burner floating output Section 5 2 2 Modulating burner analog output CC1B7865en 14 11 2000 Landis amp Staefa Division 5 Operating modes 5 6 Response threshold Q Landis amp Staefa Division The response threshold Q defines how long and how low the actual value can drop before the system switches over to high fire operation An internal mathematical calculation using an integration function determines the sum of all the areas Qe Q1 Q2 Q3 as shown in the diagram This only takes place when the control deviation x w falls below the value for the switching threshold HYS1 If the actual value increases integration is stopped If Qey exceeds the pre set response threshold Q can be adjusted at the parameter level this causes the second stage of the burner to be switched on or in the case of a floating controller modulating controller the regulating unit to open If the
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