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1. User manual for meter with thermocouple input PAC 94T AN Do not use the unit in explosion hazard areas d _ Do not use the unit in areas with significant temperature variations exposed to condensation or icing Do not use the unit in areas exposed to direct sunlight Make sure that the ambient temperature e g inside the control box does not exceed the recommended values In such cases forced cooling of the unit must be considered e g by using a ventilator 2 GENERAL CHARACTERISTICS The PAC 94T meter is equipped with thermocouple input K S J T N R B E The measurement range depends on connected thermocouple type Measurement is linearised by the polynomial characteristics referred to particular thermocouples and temperature of cold ends is compenssated automatically The device has additional measurement range 10 90 mV mainly for diagnostics of measurement circuits Being in this range unit displays direct voltage connected to its input without compensation of cold ends The result is presented on 4 digit LED display For every thermocouples result is displayed as integer no decimal point e g 1460 and for mV range with 2 digits after decimal points with resolution 0 01 mV e g 1 23 PAC 94T can be equipped with two or four relay or OC type outputs Optionally with two relays outputs can be equipped with active current output Device PAC 94T is equipped with RS 485 Modbus RTU communica
2. are positive then relay state will be turned on if the input value exceeds the border values and stay bigger or lower during at least t on see points Bon Don Figure 6 4 a d e Similarly the relay will be turned off if time toFF elapse since the input signal value exceeds any of the border values see points Boer Dorr Figure 6 4 a d e 17 User manual for meter with thermocouple input PAC 94T If ta te tc Or tp when input signal stay in zone A or zone B are lower than parameters t on or toFF the relay will not change his state see points A and C Figure 6 4 a d e The state of relay output while the input value exceeds the border values points A B C D is described by parameter modE The relay can be turned on modE on or turned off modE oFF when input signal value is contained in zone A Figure 6 4 a The parameter AL allow user to set the relay output behaviour in critical situations e g Input values exceeds permissible measurement range User can select that the relays will be turned on turned off or not changed in critical situations All parameters connected with relay outputs are described in paragraph rEL1 menu 6 3 2 Two thresholds mode displayed value t t t t i measure st re 5 zone B d signal el u eee ee e ee eng e RE Pe IE ee ee N a ZE SEtP or SEt2 parameter nn A E EE EE EE EE
3. 2 oFF mode 3 in mode 4 out mode 5 modb mode t on parameter in rEL3 menu expressed in tenth of 43h Yes 0 999 seconds or tenth of minutes depend on unit parameter register no 45h toFF parameter in rEL3 menu expressed in tenth of 44h Yes 0 999 seconds or tenth of minutes depend on unit parameter register no 45h unit parameter in rEL3 menu en res Get 0 seconds 1 minutes AL parameter in rEL3 menu an ES G 0 no changes 1 on 2 off 47h Yes 999 9999 SEt2 parameter in rEL3 menu no decimal point included 48h Yes 999 9999 SEtP parameter in rEL4 menu no decimal point included 49h Yes 999 999 HySt parameter in rEL4 menu no decimal point included modE parameter in rEL4 menu 4Ah Yes 0 3 0 noAC mode 1 on mode 2 oFF mode 3 in mode 4 out mode 5 modb mode t on parameter in rEL4 menu expressed in tenth of 4Bh Yes 0 999 seconds or tenth of minutes depend on unit parameter register no 4Dh toFF parameter in rEL4 menu expressed in tenth of 4Ch Yes 0 999 seconds or tenth of minutes depend on unit parameter register no 4Dh unit parameter in rEL4 menu u res Ee 0 seconds 1 minutes AL parameter in rEL4 menu SH Yes oe 0 no changes 1 on 2 off 4Fh Yes 999
4. 24 E DEE 25 7 323 DH EE Ee Ee ee 26 73 0 HOLG ee 26 FE SEC Eee aa nee or ects aise a er ee ran Renee 27 738 10 DON EE 27 73 9 Eal ee 28 eg 28 III EN ee E 28 7 4 MENU STRUCTURE u 2 u0eeetneeen een hen see nenn nenn EAEE EE EERE TIETEEN EEEE EEEN ee 29 8 THE ALARM LED E 31 9 CURRENT OUTPUT VALUE CALCULATION zuzuu00002222200000002n0aun0unnounnaannnunnnnnnnannnunnnunnnannnannnunnnannnnnnnnn 31 10 THE MODBUS PROTOCOL NEE eege eegent 31 Ed EE OFRE EE 32 10 2 TRANSMISSION ERRORS DE GCHIDTION 36 10 3 EXAMPLES OF QUERY ANSWER FRAMES ae 36 11 DEFAULT AND USER S SETTINGS LIST E 39 User manual for meter with thermocouple input PAC 94T Explanation of symbols used in the manual This symbol denotes especially important guidelines concerning the installation and operation of the device Not complying with the guidelines denoted by this symbol _ may cause an accident damage or equipment destruction N wN da S gt Ba Le IF THE DEVICE IS NOT USED ACCORDING TO THE MANUAL THE USER IS RESPONSIBLE FOR POSSIBLE DAMAGES WR This symbol denotes especially important characteristics ofthe unit Read any d 1 _ information regarding this symbol carefully The manufacturer is not responsible for any damages caused by inappropriate installation not maintaining the proper technical condition and using the unit against its destination Installation should be conducted by qualified personnel During installat
5. 3 prior to starting the installation Ensure that the power supply network voltage corresponds to the nominal voltage stated on the unit s identification label The load must correspond to the requirements listed in the technical data All installation works must be conducted with a disconnected power supply Protecting the power supply clamps against unauthorized persons must be taken into consideration 4 1 UNPACKING After removing the unit from the protective packaging check for transportation damage Any transportation damage must be immediately reported to the carrier Also write down the unit serial number on the housing and report the damage to the manufacturer Attached with the unit please find user s manual warranty assembly brackets 2 pieces 4 2 ASSEMBLY The unit is designed for mounting indoor inside housings control panel switchboard assuring appropriate protection against electric impulse waves Metal housing must be connected to the grounding in a way complying with the governing regulations Disconnect the power supply prior to starting assembly Check the correctness of the performed connections prior to switching the unit on be prepared The thickness of the material of which the panel is made must not _ _ exceed 5 mm When preparing the mounting hole take the grooves for catches located on both sides of the housing into consideration Figure 4 1 Place the unit
6. Negative values can be input by selecting a sign on first digit to change value use and v buttons Threshold is the medium value of relay hysteresis second threshold of the relay range 999 9999 Negative values can be input by selecting a sign on first digit to change value use and v buttons This threshold is accessible when modE parameter is set to in or out value Threshold is the medium value of relay hysteresis hysteresis of relay range 0 999 Full hysteresis of the relay is equal to 2x HYSt parameter The relay state can change when an input signal is out of threshold hysteresis to threshold hysteresis zone Presented parameters should be set to ensure that SEtP HYSt SEt2 HYSt SEtP HYSt or SEt2 HYSt do not exceeds the measure range Additionally in two threshold mode modE in or out the hysteresis for both thresholds must not cover each other in other case relay can t change his state relay operation mode noAC the relay is not active permanent turned off on one threshold mode the relay is turned ON when input signal exceeds SEtP HYSt value and is turned off back when the input signal became lower than SEtP HYSt OFF one threshold mode the relay is turned OFF when input signal exceeds SEtP HYSt value and is turned on back when the input sign
7. a ns N it it D A 2 i 4 eee en oe 4 41 HYSt parameter zone B i a Hoot Ka b relay state er modE in I Poort me ton 0 a E Fe A toFF 0 i i l a en II port c relay state oo Bu foot modE out EG I 01 closed hoot ton 0 Io d ott pl I ok EE CG Ei a a time relay state i i d d mode inf er 3 3 nr ton gt 0 i i i toFF gt 0 l l i f relay state l e modE out ton gt 0 toFF gt 0 toFF parameter A t on parameter toFF parameter Description A B C D E points where measured signal exceeds border values expected value allowed deviation Bon Borr Con Corr relays state changes moments for t on gt 0 toFF gt 0 Eon Eorr ta ts tc to te time periods while input signal is in zone A or zone B Figure 6 5 Principle of LED relay output operation for two thresholds mode 18 User manual for meter with thermocouple input PAC 94T Figure 6 5 presents the principle of relay outputs operation for two thresholds mode and an example values of other parameters In this mode parameter SEt2 is accessible in common with SEtP this parameter describes a second threshold of the relay output The parameters HYSt modE t on toFF unit and AL are connected with both SEtP and SEt2 thresholds While the controlling process the r
8. b 250 C 1820 C te E 200 C 1000 C volt The device has additional measurement range 10 90 mV mainly for diagnostics of measurement circuits Being in this range unit displays direct voltage connected to its input with resolution 0 01 mV without compensation of cold ends FiLt this parameter sets filtration rate It can be set to values from 0 no filtration to 5 strongest filtration time window about 2 sec toFS _ offset expressed in 1 C range 9 9 C This parameter allows shifting of measurement scale and express value added to calculated measured result Warning The offseting of a scale is realised independently of cold ends automatic compensation 24 User manual for meter with thermocouple input PAC 94T 7 3 4 OutP menu This menu contains parameters of current output control Menu is available if the device is equipped witch current output d ER Current output can be controlled depend on both present measured value and peak G m value if peak detection is enabled Omod current output mode can be set to values oFF current output disabled 0 20 current output enabled with 0 20 mA mode 4 20 current output enabled with 4 20 mA mode modb current output controlled via RS 485 interface OUtL this parameter determines the input value for which the output current is minimal 0 mA or 4 mA depend of c
9. g circuits controlling relays or contactors Connections of power supply voltage and measurement signals are executed using the screw connections on the back of the unit s housing max 2mm Figure 4 4 Method of cable insulation replacing and cable terminals User manual for meter with thermocouple input PAC 94T N All connections must be made while power supply is disconnected optional Power R4 24V 5 10 RS 485 supply Imax 100m GND DATA depending on version 7 Uo gt DATA FT ER ag optional optional optional Figure 4 5 Terminals description relay outputs no current output version AN Power 24V 45 10 RD 485 supply optional ACTIVE DATA ook Imax 100mA GND depending on version SHTET owp Uo DATA optional oe ear 2 gogga 40 11 12 43 414 15 8 n c n c j GND GND R1 R2 optional optional Figure 4 6 Terminals description relay outputs device with current output A Power 24V 5 10 RS 485 supply optional Imax 100mA GND DATA depending on version OC4 T Uo DATA 5 G BR 10 1112 13 14 15 16 17 18 19 20 te amp 2 ok GND GND GND OC1 oC 063 U h optional optional optional DCH OC4 Umax 30v DC TC Imax 30mA Pmax 100mW Figure 4 7 Terminals description OC type outputs 10 User manual for meter with thermocouple input PAC 94T N Contacts of relay outputs are not equipped with spark s
10. in the mounting hole inserting it from the front side of the panel and then fix it using the brackets Figure 4 2 The minimum distances between assembly holes axes due to the thermal and mechanical conditions of operation are 115 mm x 67 mm Figure 4 3 1 In order to assembly the unit a 90 5 mm x 43 mm mounting hole Figure 4 1 must d N J User manual for meter with thermocouple input PAC 94T 90 5 mm S W max 5 mm 3 3 INN NN LS bw nl L Segel 1mm Figure 4 1 Mounting hole dimensions lt N NA Nr IN 7 NS MW oo YW 5mm Figure 4 2 Installing of brackets and dimensions of connectors User manual for meter with thermocouple input PAC 94T 115mm IE Figure 4 3 Minimum distances when assembly of a number of units 67mm 4 3 CONNECTION METHOD Caution AN Installation should be conducted by qualified personnel During installation all e available safety requirements should be considered The fitter is responsible for IN executing the installation according to this manual local safety and EMC regulations The unit is not equipped with an internal fuse or power supply circuit breaker Because of this an external time delay cut out fuse with minimal possible nominal current value must be used recommended bipolar max 2 A and a power supply circuit breaker located near the unit In the case of using a monopolar fuse it must be mounted on the
11. maximum delay between 27h Yes 0 99 received frames 0 no delay checking 1 99 maximum delay expressed in seconds 28h Yes 0 1 AL parameter in bEEP menu 0 off 1 on 29h Yes 0 1 R1 parameter in bEEP menu 0 off 1 on 2Ah Yes 0 1 R2 parameter in bEEP menu 0 off 1 on 2Bh Yes AEN R3 parameter in bEEP menu 0 off 1 on 2Ch Yes 0 1 R parameter in bEEP menu 0 off 1 on bri parameter display brightness SCH Yes Fest 1 the lowest brightness 8 the highest brightness Edit parameter numerical parameters edit mode een ues Gg 0 dig mode 1 SLid mode 30h Yes 999 9999 SEtP parameter in rEL1 menu no decimal point included 31h Yes 999 999 HySt parameter in rEL1 menu no decimal point included modE parameter in rEL1 menu 32h Yes 0 3 0 noAC mode 1 on mode 2 OFF mode 3 in mode 4 out mode 5 modb mode t on parameter in rEL1 menu expressed in tenth of 33h Yes 0 999 seconds or tenth of minutes depend on unit parameter register no 35h toFF parameter in rEL1 menu expressed in tenth of 34h Yes 0 999 seconds or tenth of minutes depend on unit parameter register no 35h unit parameter in rEL1 menu SH ZER 0 seconds 1 minutes AL parameter in rEL1 menu 36h Yes Bes 0 no chang
12. phase cable L The power supply network cable diameter must be selected in such a way that in the case of a short circuit of the cable from the side of the unit the cable shall be protected against destruction with an electrical installation fuse Wiring must meet appropriate standards and local regulations and laws In order to secure against accidental short circuit the connection cables must be terminated with appropriate insulated cable tips Tighten the clamping screws The recommended tightening torque is 0 5 Nm Loose screws can cause fire or defective operation Over tightening can lead to damaging the connections inside the units and breaking the thread In the case of the unit being fitted with separable clamps they should be inserted into appropriate connectors in the unit even if they are not used for any connections Unused clamps marked as n c must not be used for connecting any connecting cables e g as bridges because this can cause damage to the equipment or electric shock User manual for meter with thermocouple input PAC 94T A _If the unit is equipped with housing covers and sealing packing protecting against A water intrusion pay special attention to their correct tightening or clamping In the P case of any doubt consider using additional preventive measures covers roofing seals etc Carelessly executed assembly can increase the risk of electric shock After the installation
13. will change slow causes of turning on or off relay due to thresholds values The critical situation is slowly detected so it is impossible to predict the relay state in that situations e lf parameter AL on the relay will be turned on in the critical situations even if his parameter modE noAC 23 User manual for meter with thermocouple input PAC 94T 7 3 2 DEED menu This menu contains options connected with acoustic signal AL if this parameter is set to on any critical situation causes by acoustic signal r1 if this parameter is set to on activation of relay R1 causes by acoustic signal r2 if this parameter is set to on activation of relay R2 causes by acoustic signal r3 if this parameter is set to on activation of relay R3 causes by acoustic signal ra if this parameter is set to on activation of relay R4 causes by acoustic signal Ka l Acoustic signal turned on by e g relay can be turned off by pressing of any button Vi 7 3 3 Int menu This menu presets the measurement input tY PE type of the input sensor This parameter can be set to values thermocouple type measurement range te K 200 C 1370 C te S 50 C 1768 C te J 210 C 1200 C tet 200 C 400 C te n 200 C 1300 C te r 50 C 1768 C te
14. 17 5 According to formula from page 25 lout 17 5 10 0 20 0 10 0 x 16 mA 4 mA 0 75 x 16 4 16 mA Calculated lout do not exceeds the output working range 3 21 mA Briet According to formula from page 25 lout 20 5 10 0 20 0 10 0 x 16 mA 4 mA 1 05 x 16 4 20 08 mA Calculated lout do not exceeds the output working range 3 21 mA c D 30 0 According to formula from page 25 lout 30 0 10 0 20 0 10 0 x 16 mA 4 mA 2 x 16 4 36 mA Calculated lout exceeds the output working range 3 21 mA so current output will generate current equal to the upper border of range defined by parameter Lo r i Hi r it means 21 mA 10 THE MODBUS PROTOCOL HANDLING Transmission parameters 1 start bit 8 data bits 1 or 2 stop bit 2 bits are send 1 and 2 bits are accepted when receive no parity control Baud rate selectable from 1200 to 115200 bits sec Transmission protocol MODBUS RTU compatible The device parameters and display value are available via RS 485 interface as HOLDING type registers numeric values are given in U2 code of Modbus RTU protocol The registers or groups of the registers can be read by O3h function and wrote by O6h single registers or 10h group of the registers accordingly to Modbus RTU specification Maximum group size for 03h and 10h functions cannot exceeds 16 registers for single frame e l The device interprets the broadcast messages bu
15. 999 OUtH parameter in OUtP menu no decimal point included A3h Yes 0 499 Lo r parameter in OUtP menu expressed in 0 1 A4h Yes 0 99 Hi r parameter in OUtP menu expressed in 0 1 Ah Yes 0 3 AL parameter in OUtP menu current output value on critical exception 0 no change 1 22 1 mA 2 3 4 mA 3 0 mA BR OM these registers are active only if device is equipped with active current output after writing to register no 20h the device responds with an old address in the message after writing to register no 22h the device responds with the new baud rate the value of the mbAc parameter is also connected to write to this register so it is possible to block a writes but impossible to unblock writes via RS 485 interface The unblocking of the writes is possible from menu level only 35 User manual for meter with thermocouple input PAC 94T 10 2 TRANSMISSION ERRORS DESCRIPTION If an error occurs while write or read of single register then the device sends an error code according to Modbus RTU specifications example message no 1 Error codes 01h illegal function only functions 03h 06h and 10h are available 02h illegal register address 03h illegal data value 08h no write permission see mbAc parameter AOh exceed of upper border of input range 60h exceed of lower border of input range AOh and 60h codes can appear o
16. 9999 SEt2 parameter in rEL4 menu no decimal point included 34 User manual for meter with thermocouple input PAC 94T Register Write Range Register description modE parameter in HOLd menu type of detected SEN ZER G changes 0 peaks 1 drops PEA parameter in HOLd menu minimum detectable mn vos a change no decimal point included timE parameter in HOLd menu maximum peaks SEH ZER Ser Es or drops display time expressed in seconds HdiS parameter in HOLd menu GEN Gg 0 rEAL mode 1 HOLd mode H r1 parameter in HOLd menu a wee oo 0 rEAL mode 1 HOLd mode H r2 parameter in HOLd menu SE mes Se 0 rEAL mode 1 HOLd mode H r3 parameter in HOLd menu a res u 0 rEAL mode 1 HOLd mode Hr parameter in HOLd menu we Yee nn 0 rEAL mode 1 HOLd mode HOUt parameter in HOLd menu 58h Yes Se 0 rEAL mode 1 HOLd mode Omod parameter in OUtP menu current output mode AOh Vise 0 2 0 current output disabled 1 current output enabled with i 0 20mA mode 2 current output enabled with 4 20mA mode 3 current output controlled via RS 485 interface Ath Yes 999 9999 OUtL parameter in OUtP menu no decimal point included A2h Yes 999 9
17. BD SIMEX lt a division of BD SENSORS USER MANUAL for meter with thermocouple input type PAC 94T firmware version 5 16 or higher AN Esc LE Read the user s manual carefully before starting to use the unit Producer reserves the right to implement changes without prior notice 10 12 2008 V 2 03 User manual for meter with thermocouple input PAC 94T CONTENTS 1 BASIC REQUIREMENTS AND USER SAFETY 3 2 GENERAL CHARACTERISTICS 2 nee een een ee 4 SSTECHNICAHL DATA E 4 4 DEVICE INSTALLATION irronneen E R E S 6 4 1 UNPACKING sessessnensieiz stene nenne nennen een anne ia NEETER RREO 6 E EE 6 4 3 CONNECTION METHOD E 8 BA MAIN TEN EE 13 5 FRONT PANEL DESCRIPTION 2222220200000222220000000000000000n000n nn nnnnnnnnnnn nn Bnnnnnnnnn nn nnnnnnnnn nn nnnnnnnnnn nn nnnnnnnnn 13 6 PRINCIPLE OF OPERATION una en 14 BT MEASUREMENT MODE 2 2 2 14 6 2 DETECTION OF THE PEAK VALUES usssssssssnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnnnnnnnnnnnnnnnenn 14 6 3 CONTROL OF THE RELAY ETag 15 6 3 7 One 1 rESNOld ie 17 8 9 2 TWO neshoda MOIE zen nee ee aner 18 Ti DEVIGE PROGRAMMING anne 19 7 1 PROGRAMMING MEN 19 72 FARAME TERS EDITION nee ee eg 20 7 2 1 Numeric parameters digit change model 20 7 2 2 Numeric parameters slide change model 20 7 2 3 Switch parameters LIST Ype nun ad 21 73 MENU DESCRIPTION E 21 IA TEL IE ee ee ner ne ee renee 22 EE 24 73 3 ID DER ee een ee ee ee
18. Current output value on critical exception 22 1 mA 26 Display parameters bri Display brightness bri6 26 Configuration of peaks detection function HOLd menu modE Kind of detected changes norm 26 PEA Minimum detected change 0 0 26 timE Maximum time of peak displaying 0 0 26 HdiS The type of displayed value HOLd 26 Hri Source of relay R1 and LED R1 control rEAL 26 Hr2 Source of relay R2 and LED R2 control rEAL 26 Hr Source of relay R3 and LED R3 control rEAL 26 H r4 Source of relay R4 and LED R4 control rEAL 26 HOUt Source of current output control rEAL 27 40 User manual for meter with thermocouple input PAC 94T Parameter Description Default value User s value deet page Settings of access to the configuration parameters SECu menu Permission to changes of relay R1 threshold Art l on 27 without of the user password knowledge Ar Permission to changes of relay R2 threshold ep 07 without of the user password knowledge Ara Permission to changes of relay R3 threshold Sp 07 without of the user password knowledge Permission to changes of relay R4 threshold Ar4 on 27 without of the user password knowledge RS 485 interface configuration menu rS Addr Device address 0 27 bAud Baud rate 9 6 27 mbAc Permission to changes of configuration registers on 27 mbtO Maximum delay between received messages 0 27 rESP Additional delay of answer tra
19. S SETTINGS LIST User manual for meter with thermocouple input PAC 94T Parameter Description Default value User s value Parameters of relay R1 operation rEL1 menu SEtP Relay R1 threshold 20 0 22 SEt2 Relay R1 second threshold 30 0 22 HYSt Hysteresis of relay R1 0 0 22 modE Operation mode of relay R1 in 22 ton Turn on delay of relay R1 0 0 23 toFF Turn off delay of relay R1 0 0 23 unit Unit of t on toFF parameters of relay R1 SEC 23 AL Reaction for critical situation of relay R1 OFF 23 Parameters of relay R2 operation rEL2 menu SEtP Relay R2 threshold 40 0 22 SEt2 Relay R2 second threshold 50 0 22 HYSt Hysteresis of relay R2 0 0 22 modE Operation mode of relay R2 in 22 ton Turn on delay of relay R2 0 0 23 toFF Turn off delay of relay R2 0 0 23 unit Unit of t on toFF parameters of relay R2 SEC 23 AL Reaction for critical situation of relay R2 OFF 23 Parameters of relay R3 operation rEL3 menu SEtP Relay R3 threshold 60 0 22 SEt2 Relay R3 second threshold 70 0 22 HYSt Hysteresis of relay R3 0 0 22 modE Operation mode of relay R3 in 22 ton Turn on delay of relay R3 0 0 23 toFF Turn off delay of relay R3 0 0 23 unit Unit of t on toFF parameters of relay R3 SEC 23 AL Reaction for critical situation of relay R3 oFF 23 Parameters of relay R4 o
20. al became lower than SEtP HYSt HAEL in two thresholds mode the relay is turned ON when the input signal is bigger than lower threshold HYSt and lower than bigger threshold HYSt and turned off when the input signal is contained in the second zone The bigger threshold means bigger one of SEtP and SEt2 thresholds the lower threshold means lower one of SEtP and SEt2 thresholds fe d ia ton toFF ER L unit AL User manual for meter with thermocouple input PAC 94T GG 33 two thresholds mode relay is turned ON when the input value is bigger than bigger threshold HYSt and lower than lower threshold HYSt and turned on when the input signal is contained in the second zone The bigger threshold means bigger one of SEtP and SEt2 thresholds the lower threshold means lower one of SEtP and SEt2 thresholds modb the relay is controlled via RS 485 interface independently on the input signal out e LEDs light when relays are closed independently of relays mode e When power supply fail unit do not store relays state selected by RS 485 interface turn on delay time the relay is turned on with delay equal t on if the input value exceeds appropriate border value defined with threshold and hysteresis at least t on time t on range 0 99 9 defined with 0 1 sec resolution Uni
21. ases where the unit gets dirty do not clean with solvents For cleaning use warm water with small amount of detergent or in the case of more significant contamination ethyl or isopropyl alcohol Using any other agents can cause permanent damage to the housing Product marked with this symbol should not be placed in municipal waste Please check local regulations for disposal and electronic products 5 FRONT PANEL DESCRIPTION alarm LED indicator AL display AL R1 R2 R3 Thresholds exceeding A LED indicators R Een programming pushbuttons Symbols and functions of push buttons Esc Symbol used in the manual ESC MENU MENU Functions e Enter to main menu press and hold by at least 2 sec e Exit the current level and Enter to previous menu or measure mode e Cancel the changes made in parameter being edited Functions e Start to edit the parameter e Enter to the sub menu e Confirmation of changes made in parameter being edited ewer Symbol used in the manual ENTER Wa rmo used in the manual v Functions e Change of the present menu e Modification of the parameter value e Change of the display mode 13 User manual for meter with thermocouple input PAC 94T 6 PRINCIPLE OF OPERATION After turning the power supply on device ID and software version are showed on the display next the controller goes to the measurement mode 6 1 MEASUREMENT MODE In the
22. eaks are displayed during the time defined by parameter timE If a new peak will be detected while one is displayed this new peak will be displayed and display time counter will be cleared Figure 6 1 If no peaks are detected while time timE elapses device starts to show the current value of input signal again The relays LEDs can be controlled depend on the current value of input signal or the peak value see HOLd menu 14 User manual for meter with thermocouple input PAC 94T a Measure timE timE DEA t PE 3 real measurement result time display value Figure 6 1 Process of peaks detection 6 3 CONTROL OF THE RELAY OUTPUTS The control of the object measured signal is realized via relay outputs Front panel LEDs named R indicates the state of particular relay output fn If device is not equipped with one or more relay outputs menus refer to this relays 1 are available but apply to LED indicators only In such case LEDs indicates Ei exceeding of particular thresholds Modes of the control can be changed depend on the values of parameters SEtP GEO HYSt modE ton toFF unit and AL Depend on modE parameter relays can be not used or controlled over one or two thresholds values If one threshold is used Figure 6 2 the relay can be turned on modE on or off modE oFF when the inp
23. elay output changes his state depends of both SEtP and SEt2 thresholds in similar way as it was described in one threshold mode If two threshold mode is used modE parameter defines state of the relay output when the input value occurs in a particular zone defined by border values of both thresholds The relay can be turned on if the input value is contained in zone A modE in or zone B modE out and turned off if it is contained in the second one Figure 6 5 en The sequence of thresholds SEtP and SEt2 can be set in any order due to the l control of relay outputs is done depend on difference between thresholds values NE zone A and outside of threshold values zone B 7 DEVICE PROGRAMMING The device menu allow user to set all parameters connected to operation of measurement input control modes critical situations behaviour communication via RS 485 and access settings The meaning of the particular parameters is described in paragraph MENU DESCRIPTION Some of the parameters can be accessed without menu entering quick view mode After pressing or v button name of the threshold e g rEL1 and his value will be displayed on the display in alternating mode If X or v will be pressed in 5 sec again the next threshold will be displayed else the device comes back to the measurement mode Ifa free access is enabled see description of SECu menu user can c
24. erates depend on the current value HOLd relay LED operates depend on the peak drop value 26 User manual for meter with thermocouple input PAC 94T HOUt current output operation mode rEAL current output operates depend on the current value HOLd current output operates depend on the peak drop value 7 3 7 SECu menu This menu contains presets connected with availability of other parameters Scod user password 4 digits number If this parameter is set at value 0000 user password is turned off If the user do not remember his password the access to the menu is possible by the one use password To get this password please contact with Marketing Division Single use password can be used only one time after that it is destroyed Entering this password causes in clearing of user password it means sets the user password to 0000 f sN The one use password can be used ONE TIME ONLY it is impossible to use it L again The one use password can be restored by Service Division only Ari this option permits user on or prohibits OFF to modify the thresholds of the A r4 relays LEDs R1 R4 without knowledge about user password 7 3 8 rS menu This menu is connected with RS 485 interface and sets his properties Addr this parameter defines the address of the device accordingly to Modbus protocol It can be set
25. ermocouple input T 4 thermocouple input N 5 thermocouple input R 6 thermocouple input B 7 thermocouple input E 8 diagnostic voltage range 12h Yes Ft parameter in InPt menu measurement filtering rate 18h Yes 99 99 toFS parameter in InPt menu shift of measurement scale expressed by 0 1 C 20h Yes 0 199 Device address 21h No 20B8h Device identification code ID 22h Yes bAud parameter in rS menu baud rate 0 1200 baud 1 2400 baud 2 4800 baud 3 9600 baud 4 19200 baud 5 38400 baud 6 57600 baud 7 115200 baud Sich Yes mbAc parameter in rS menu permission to write registers RS 485 interface 0 write denied 1 write allowed 24h Yes see descr Parameters of SECU menu binary format 0 oFF 1 on bit 0 A r1 parameter bit 1 A r2 parameter bit 2 Ar3 parameter bit 3 A r4 parameter 32 User manual for meter with thermocouple input PAC 94T Register Write Range Register description rESP parameter in rS menu additional response delay 25h Yes 0 5 0 no additional delay 1 10c option 2 20c option 3 50c option 4 100c option 5 200c option mbtO parameter in rS menu
26. es 1 on 2 off 37h Yes 999 9999 SEt2 parameter in rEL2 menu no decimal point included 38h Yes 999 9999 SEtP parameter in rEL2 menu no decimal point included 39h Yes 999 999 HySt parameter in rEL2 menu no decimal point included modE parameter in rEL2 menu 3Ah Yes 0 3 0 noAC mode 1 on mode 2 OFF mode 3 in mode 4 out mode 5 modb mode t on parameter in rEL2 menu expressed in tenth of 3Bh Yes 0 999 seconds or tenth of minutes depend on unit parameter register no 3Dh 33 User manual for meter with thermocouple input PAC 94T Register Write Range Register description toFF parameter in rEL2 menu expressed in tenth of 3Ch Yes 0 999 seconds or tenth of minutes depend on unit parameter register no 3Dh unit parameter in rEL2 menu SEN ZER Ke 0 seconds 1 minutes AL parameter in rEL2 menu en ves Bes 0 no changes 1 on 2 off 3Fh Yes 999 9999 SEt2 parameter in rEL2 menu no decimal point included 40h Yes 999 9999 SEtP parameter in rEL3 menu no decimal point included 4th Yes 999 999 HySt parameter in rEL3 menu no decimal point included modE parameter in rEL3 menu 42h Yes 0 3 0 noAC mode 1 on mode
27. hange the value of particular threshold pressing button ENTER see PARAMETERS EDITION _ If particular parameter has been changed and confirmed in quick view mode its new value is displayed in alternating mode with parameter name by few seconds N 1 _ Confirmed changes may be checked or user can switch viewed parameter pressing 4 or v button 7 1 PROGRAMMING MENU To enter main menu being in the measurement mode operator must to press and hold at least 2 sec ESC MENU button If the user password is defined see parameter Scod menu SECU operator have to enter correct one before proceeding to menu options Entering of the passwords is similar to the edition of numeric parameters see PARAMETERS EDITION however presently editing digit ce 9 is showed only on the display other digits are replaced by sign After entering of last digit of the password first menu position will be displayed if the password is correct or warning Err in other case AN Pay attention when device parameters are being changed If it is possible turn off e controlled installation machine 19 User manual for meter with thermocouple input PAC 94T Functions of the buttons while sub menu and parameters choice Selection of sub menu or parameter for editing Name of selected item aS BVG Sub menu or parameter is displayed Operation of ENTER button depend on present menu position e if the name of
28. his parameter determines the behaviour of current output if any critical situation occurs The parameter can be set to one of the values noCH current will not change 22 1 current will be set to 22 1 mA 3 4 current will be set to 3 4 mA 0 0 current will be set to 0 mA When the critical situation goes the current will be set to value calculated due to formulas given above 7 3 5 bri parameter This parameter allows user to set bright of the LED display bright can be set to conventional values from 1 to 8 7 3 6 HOLd menu This menu contains parameters connected with peak detection function See also full description of the peak detection function in paragraph DETECTION OF THE PEAK VALUES modE the type of detected changes of the input signal can be set to values norm peaks peak and next drop of the input signal of value equal at least PEA inv drops drop and next peak of the input signal of value equal at least PEA PEA minimal detected signal change classified as peak or drop see Figure 6 1 timE maximum time of displaying of the peak drop value can be set from 0 1 to 19 9 sec with 0 1 sec resolution HdiS type of displayed values rEAL current value is displayed HOLd peak drop value is displayed H r1 relay LED outputs R1 R4 operation mode H r4 rEAL relay LED op
29. identification code 20B8h 3 Change of the device address from 1 to 2 write to reg 20h ADDR FUNC REG H L DATA H L CRC L H 01 06 00 20 00 02 09 C1 DATAH O0 DATAL new device address 2 The answer the same as the message ADDR FUNC REG H L DATA H L CRC L H 01 06 00 20 00 02 09 C1 4 Change of baud rate of all devices connected to the net BROADCAST message ADDR FUNC REG H L COUNT H L CRC L H 00 06 00 22 00 04 29 D2 DATAH 0 DATA L 4 new baud rate 19200 baud Device do not reply to BROADCAST type messages 37 User manual for meter with thermocouple input PAC 94T 5 Read of the registers 1 2 and 3 in one message example of reading a number of registries in one frame ADDR FUNC REG H L COUNT H L CRC L H 01 03 00 01 00 03 54 0B COUNT L the count of being read registers max 16 The answer ADDR FUNC BYTE C DATA H1 L1 DATA H2 L2 DATA H3 L3 CRC L H 01 03 06 00 0A 00 00 00 01 78 B4 DATA H1 L1 reg 01h 10 displayed value 1 0 DATA H2 L2 reg 02h 0 no errors DATA H3 L3 reg 03h 1 decimal point position 0 0 d CR There is no full implementation of the Modbus Protocol in the device The d p functions presented above are available only 38 11 DEFAULT AND USER
30. in range from 0 to 199 If the value 0 is set then device responds to frames with address 255 FFh bAud this parameter determines RS 485 interface baud rate It can be set to one of 8 possible values 1 2 2 4 4 8 9 6 19 2 38 4 57 6 115 2 which respond to the baud rates of 1200 2400 4800 9600 19200 38400 57600 and 115200 bit sec respectively mbAc this parameter sets the access to the configuration registers of the device Possible values on configuration registers can be set via RS 485 interface OFF configuration registers cannot be set via RS 485 interface d e The access to registers no 04h i 05h can t be denied by mbAc parameter DL see LIST OF REGISTERS mbtO this parameter defines maximal time sec between following frames received by the device If the delay will be greater than the value of mbtO parameter the relays which are controlled via RS 485 interface will set to alert state see rEL1 menu description Parameter mbtO can be set to values from 0 to 99 seconds The value 0 means that the time will be not controlled 27 User manual for meter with thermocouple input PAC 94T FESP this parameter defines minimal additional delay between the Modbus message and the answer of the device received and sent via RS 485 interface This additional delay allows the device to work with poor RS conver
31. ion all available safety requirements should be considered The fitter is responsible for executing the installation according to this manual local safety and EMC regulations The unit must be properly set up according to the application Incorrect configuration can cause defective operation which can lead to unit damage or an accident If in the case of a defect of unit operation there is a risk of a serious threat to the safety of people or property additional independent systems and solutions to prevent such a threat must be used The unit uses dangerous voltage that can cause a lethal accident The unit must be switched off and disconnected from the power supply prior to starting installation of troubleshooting in the case of malfunction Neighbouring and mating equipment must meet the requirements of appropriate standards and regulations concerning safety and be equipped with adequate anti overvoltage and anti interference filters Do not attempt to disassemble repair or modify the unit yourself The unit has no user serviceable parts Units in which a defect was stated must be disconnected and submitted for repairs at an authorized service centre N In order to minimize fire or electric shock hazard the unit must be protected a against atmospheric precipitation and excessive humidity Do not use the unit in areas threatened with excessive shocks vibrations dust humidity corrosive gasses and oils
32. is completed do not touch the unit s connections when it is switched on because it carries the risk of electrical shock Due to possible significant interference in industrial installations appropriate measures assuring correct operation of the unit must be applied To avoid the unit of improper indications keep recommendations listed below Avoid common parallel leading of signal cables and transmission cables together with power supply cables and cables controlling induction loads e g contactors Such cables should cross at a right angle Contactor coils and induction loads should be equipped with anti interference protection systems e g RC type Use of screened signal cables is recommended Signal cable screens should be connected to the earthing only at one of the ends of the screened cable In the case of magnetically induced interference the use of twisted couples of signal cables so called spirals is recommended The spiral best if shielded must be used with RS 485 serial transmission connections In the case of interference from the power supply side the use of appropriate anti interference filters is recommended Bear in mind that the connection between the filter and the unit should be as short as possible and the metal housing of the filter must be connected to the earthing with largest possible surface The cables connected to the filter output must not run in parallel with cables with interference e
33. lays version only RS 485 8N1 and 8N2 Modbus RTU not separated 1200 bit sec 115200 bit sec LED 4 digit 20 mm height red or LED 4 digit 20 mm height green non volatile memory EEPROM type IP 65 from front after using waterproof cover IP 40 from front IP 20 housing and connection clips panel NORYL GFN2S E1 96 x 48 x 100 mm 90 5 x 43 mm min 102 mm max 5mm 0 C to 50 C 10 C to 70 C 5 to 90 no condensation up to 2000 meters above sea level 0 5 Nm 2 5 mm according to PN EN 61010 1 installation category II pollution degree 2 voltage in relation to ground 300 Vac insulation resistance gt 20 MQ insulation strength between power supply and input output terminal 1min 2300 V insulation strength between relays terminal 1min 1350 V according to PN EN 61326 User manual for meter with thermocouple input PAC 94T This is a class A unit In housing or a similar area it can cause radio frequency interference In such cases the user can be requested to use appropriate preventive measures 4 DEVICE INSTALLATION The unit has been designed and manufactured in a way assuring a high level of user safety and resistance to interference occurring in a typical industrial environment In order to take full advantage of these characteristics installation of the unit must be conducted correctly and according to the local regulations Read the basic safety requirements on page
34. measure mode the measurement results are displayed on the display If the result of measurement exceeds the permissible measurement range warning Hi or Lo is displayed rather than calculated result depends on exceeded value In the measurement mode user can check main thresholds values After pressing 4 or v button name of the threshold e g rEL1 and his value will be displayed on the display in alternating mode If 4 or v will be pressed in 5 sec again the next threshold will be displayed else the device comes back to the measurement mode If a free access is enabled see description of SECu menu user can change the value of particular threshold pressing button ENTER see PARAMETERS EDITION All accessible parameters can be changed by entering the menu see DEVICE PROGRAMMING Use the local keyboard or the remote controller to do it Note all parameters can be remote changed via RS 485 interface ce 1 Configuration of the device via menu or RS 485 interface do not stops measures Ve 6 2 DETECTION OF THE PEAK VALUES The PAC 94T controller is equipped with peaks detection function It can detect a peaks of the input signal and display their values Presets connected with this function are placed in HOLd menu see description of HOLd menu The detection of the peak can be done if the measured signal raises and drops of value at least equal to parameter PEA Detected p
35. nly during reg 01h is reading by 03h function read of a single register 10 3 EXAMPLES OF QUERY ANSWER FRAMES Examples apply for device with address 1 All values are represent hexadecimal Field description ADDR Device address on modbus network FUNC Function code REG H L Starting address address of first register to read write Hi and Lo byte COUNT H L No of registers to read write Hi and Lo byte BYTEC Data byte count in answer frame DATA H L Data byte Hi and Lo byte CRC L H CRC error check Hi and Lo byte 1 Read of the displayed value measurement PAC 94T device address 01h ADDR FUNC REG H L COUNT H L CRC L H 01 03 00 01 00 01 D5 CA a The answer we assume that the measure result is not out of range ADDR FUNC BYTE C DATA H L CRC L H 01 03 02 00 FF F8 04 DATA H L displayed value 255 no decimal point Decimal point position can be read from reg O3h 36 User manual for meter with thermocouple input PAC 94T The answer if an error occur ADDR FUNC ERROR CRC L H 01 83 60 41 18 ERROR error code 60h bottom border of the measurement range is exceeded 2 Read of device ID code ADDR FUNC REG H L COUNT H L CRC L H 01 03 00 21 00 01 D4 00 The answer ADDR FUNC BYTEC DATA H L CRC L H 01 03 02 20 B8 A1 F6 DATA
36. nsmission Std 28 Configuration of numerical parameters edition Edit Numerical parameters edit mode dig 28 4 42 User manual for meter with thermocouple input PAC 94T User manual for meter with thermocouple input PAC 94T 43 a division of BD SENSORS BD Sensors GmbH BD Sensors StraBe 1 95199 Thierstein Germany Telefon 49 0 9235 9811 2099 Telefax 49 0 9235 9811 860 e mail info bdsimex de www bdsimex de 02 2010
37. or meter with thermocouple input PAC 94T 7 4 MENU STRUCTURE gt Measurement mode Press and hold at least 2 seconds 4 digit user passworc entering if it is different from DOUO Options similar to rEL1 menu Options similar to rEL1 menu Options similar to rEL1 menu Eu Parameter N SS edition ma e gt 1 j oo our KR rameter dp gut Se edition Par rmeler 5 m excl edition Bil option See next page Parameter edition Parameter edition 29 User manual for meter with thermocouple input PAC 94T 30 Scc previous page Parameter edition Parameler edilion Parameter edition mbtO Parameter t 4 digit special password entering d S Default settings e EE SEt i Sec o Pa restoring co esc Y N User manual for meter with thermocouple input PAC 94T 8 THE ALARM LED Alarm LED AL lights in cases exceeding of permissible measurement range detection of sensor malfunction shortcut or break of measurement circuit 9 CURRENT OUTPUT VALUE CALCULATION Let the current output parameters be modE on OUtL 100 OUtH 200 Lo r 5 0 Hi r 5 0 Parameters Lo r and Hi r define working range of current output to 3 8 21 mA Output current will be calculated for three displayed values D a D
38. password checking If some password different from 0000 is set then every enter to main menu follows the entering of password If entered password is correct then first menu position will be displayed else warning Err and unit returns to measurement mode fas Due to problem with direct displaying of m and K letters they are exchanged with 1 special signs eo for m and for K respectively However in user manual Vi letters m and K are used to make it more readable example modE tc K 21 User manual for meter with thermocouple input PAC 94T 7 3 1 rEL1 menu This menu allows to configure the operation mode of relays and LEDs marked R e g R1 If there are few relay outputs available then every output has its own configuration menu e g menu rEL2 for relay LED R2 Principle of the relays operation is described in paragraph CONTROL OF THE RELAY OUTPUTS on SEtP SEt2 HYSt modE 22 e The relay outputs and LEDs named R can be controlled depend on both the current value and the peak value when peak detection is active ofthe input signal If device is not equipped with one or more relay outputs menus refer to this relays are available but apply to LED indicators only In such case LEDs indicates exceeding of particular thresholds first threshold of the relay range 999 9999
39. peration rEL4 menu SEtP Relay R4 threshold 80 0 22 SEt2 Relay R4 second threshold 90 0 22 HYSt Hysteresis of relay R4 0 0 22 modE Operation mode of relay R4 in 22 39 User manual for meter with thermocouple input PAC 94T Parameter Description Default value User s value ton Turn on delay of relay R4 0 0 23 toFF Turn off delay of relay R4 0 0 23 unit Unit of t on toFF parameters of relay R4 SEC 23 AL Reaction for critical situation of relay R4 oFF 23 Activation of acoustic signal menu bEEP AL Activation of acoustic signal by critical situation oFF 24 ri Activation of acoustic signal by relay R1 oFF 24 r2 Activation of acoustic signal by relay R2 oFF 24 r3 Activation of acoustic signal by relay R3 oFF 24 r4 Activation of acoustic signal by relay R4 oFF 24 Configuration of measurement input inPt menu tYPE Input type te K 24 FiLt Filtering ratio 0 24 toFS Shifting of measurement scale 0 0 24 Active current output configuration OUtP menu Omod Current output mode 0 20 mA 25 Sin ne 0 mA or 4 mA depend Omod a6 25 OUtH Display value for 20 mA current output 100 0 25 Lor Extension of the bottom of the nominal output range 5 0 25 Hir Extension of the top of the nominal output range 5 0 25 AL
40. sets of values a lists out of which only one of the options available on the list can be selected for the given parameter Options of switching parameter are selected using v keys Short pressing of ENTER causes in displaying of the acknowledge question SEt If key ENTER is pressed again the changes are accepted stored in EEPROM end the edition process finished Pressing the key ESC after SEt causes in cancelling of made changes and returning to menu Functions of buttons when editing numeric and switching parameters While editing numeric parameter e change of current flashing digit e slide change of value acceleration deceleration direction change While editing switch parameter selection of switch parameter change edited position A long press of ENTER button at lest 2 sec causes of display a SEt ask which allow user to make sure if change of the parameter value is correct If switch parameter is being edited a short press of ENTER button causes of display a SEt ask When ENTER button is pressed again while SEt is displayed the new value of the parameter is stored in EEPROM memory on If numerical parameter is being edited a short press of ENTER button Pressing this button operator can cancel the changes done up to now if they MENU were not approved by ENTER button after the SEt ask and come back to menu 7 3 MENU DESCRIPTION GG 33
41. some sub menu is displayed enter this sub menu name of the first parameter or next level sub menu is displayed e if the name of some parameter is displayed enter the edition of this parameter present value of the parameter is displayed ere ESC MENU button allow user to exit present menu level and goes to upper MENU level menu or measurement mode d eN _ After about 1 min since last use of the buttons device exits the menu mode and So L returns to the measurement mode only if no parameters are in editing mode 7 2 PARAMETERS EDITION To start edition of any parameter user should select name of desired one using v buttons and then press ENTER 7 2 1 Numeric parameters digit change mode Numerical parameters are displayed as decimal numbers The mode of its new value entering depends on chosen edit method see parameter Edit In mode by digit Edit dig pressing one of the keys or v causes change of current position flashing digit or the sign Short pressing of the ENTER button causes change of the position digit Press ENTER at least 2 seconds to accept the changes after that question SEt is displayed and user must to confirm or cancel the changes To conform changes and story it in EEPROM press ENTER button shortly after SEt is displayed To cancel the changes press ESC button shortly after SEt is displayed After that device returns to
42. t a i 2 closed nu ot ton 0 I ot I I toFF 0 hl OOo EE i ii II 3 time relay state I 1 II d mode un 7 SiE ton gt 0 tot 1 toFF gt 0 nl L bi GC ad ime IO WR LI e of relay state INS ton d toFF a 4 e I 1 I nn tot I modE oFF i parameter Parameter 1 ton gt 0 m o a toFF gt 0 e es time v be toFF mm on Br di parameter parameter Description A B C D points where measured signal exceeds border values expected value allowed deviation Bon Borr Don Dorr relays state changes moments for t on gt 0 toFF gt 0 ta te tc to time periods while input signal is in zone A or zone B Figure 6 4 Principle of LED relay output operation for one threshold mode Parameter SEtP sets a threshold of the relay and parameter HYSt sets a hysteresis of the relay Figure 6 4 a The relay can change his state only when input value exceeds over or under border value and ta ts tc tp times Figure 6 4 are bigger than the time defined by parameters t on toFF and unit Border values means values equal threshold hysteresis and threshold hysteresis respectively If ton and toFF parameters are set to 0 then the relay state will be changed as soon as input value exceeds any of the border values see points A and C Figure 6 4 a b c If values of t on or and toFF
43. t of this parameter is set by unit parameter turn off delay time the relay is turned off with delay equal toFF if the input value exceeds appropriate border value defined with threshold and hysteresis at least toFF time toFF range 0 99 9 defined with 0 1 sec resolution Unit of this parameter is set by unit parameter If time when the input signal exceeds some border value is shorter than t on or toFF time the relay do not change his state see paragraph CONTROL OF THE RELAY OUTPUTS unit of time for t on i toFF parameters Can be set on one of two values min minutes SEC seconds this parameter defines the relay reaction when some critical situations occurs noCH relay do not change his state on relay will be turned on OFF relay will be turned off I GG If parameter modE is set to on OFF in or Out the critical situation means that allowable measurement range is exceeded If parameter modE is set to modb the critical situation means communication delay when no data is received longer than mbtO parameter see description rS menu e f option noCH is selected for AL parameter behaviour of the relay may depend on FiLt parameter in some cases If FiLt is set to big value and the input signal drops result value of the measure
44. t then do not sends the answers 31 User manual for meter with thermocouple input PAC 94T 10 1 LIST OF REGISTERS Register Write Range Register description Oth No see measurement range Measurement value no decimal point 02h No Oh AOh 60h The status of the current measurement Oh data valid AOh top border of the measurement range is exceeded 60h bottom border of the measurement range is exceeded 03h No Oor2 Decimal point position constant value 0 without decimal point for thermocouple ranges 2 two digits after decimal point for diagnostic range 04h Yes see descr State of the relays and alarm LED binary format 1 on O off 00000000 000edcba a relay R1 b relay R2 c relay R3 d relay R2 e alarm LED If written only a b c d bits are important others are ignored these bits allows user to control the relays via RS 485 interface 05h Yes Oh 1800h State of current output expressed in 1 256 mA units it means that high byte express integer part and low byte fractional part of desired output current 06h No see measurement Peak drop value no decimal point 08h No 0 50 Temperature inside device housing expressed by 1 C 10h Yes tyPE parameter in InPt menu input type 0 thermocouple input K 1 thermocouple input S 2 thermocouple input J 3 th
45. ters which do not works properly on baud rates higher than 19200 This parameter can be set to one of values Std answer as quick as possible no additional delay 10c a answer delayed of 10 20 50 100 of 200 chars respectively 100c whereone character time depends on selected baud rate 200c Pa S In the most cases parameter rESP should be set to Std no additional delay 1 Unfortunately for some third party RS converters rESP should be adjusted experimentally Table 7 1 contains most frequently used values bAud parameter 38 4 57 6 115 2 rESP parameter 10c 200 50c Tab 7 1 Settings of rESP parameter 7 3 9 Edit parameter This parameter allows to change the edition mode of numerical parameters dig the change to by digit mode Slid slide change mode 7 3 10 dEFS parameter This setting allows to restore the factory settings of the device To get the access to this option special password is required 5465 next the device displays acknowledge question SEt Press ENTER to acknowledge the restoring of factory settings or ESC to cancel 7 3 11 SErv menu This menu contains the parameters for authorized service only To enter this menu proper service password must be entered Improper settings can causes of damage of the device 28 User manual f
46. the menu 7 2 2 Numeric parameters slide change mode In slide change mode Ed id buttons and v has different functions To increase edited value press or press and hold 4 button only the increasing became quickest as long as button is pressed To slow down the increasing button v can be used If v is pressed shortly and button is still pressed increasing slow down for a moment only if v is pressed and held while button is still pressed the increasing slow down and will be kept on lower speed To decrease edited value press or press and hold v button only The decreasing became quickest as long as button v is pressed To slow down the decreasing button can be used If 4 is pressed shortly and button v is still pressed decreasing slow down for a moment only if 4 is pressed and held while button v is still pressed the decreasing slow down and will be kept on lower speed 20 User manual for meter with thermocouple input PAC 94T Press ENTER at least 2 seconds to accept the changes after that question Set is displayed and user must to confirm or cancel the changes To conform changes and story it in EEPROM press ENTER button shortly after SEt is displayed To cancel the changes press ESC button shortly after SEt is displayed After that device returns to the menu 7 2 3 Switch parameters LIST type Switch parameters can be described as a
47. tion interface and 24 V 100 mA supply output for free use The meter can be ordered in two power supply versions 3 TECHNICAL DATA Power supply voltage 85 230 260 Vac oc 50 60 Hz depending on version or 19 24 50 Voc 16 24 35 Vac External fuse required T type max 2A Power consumption max 4 5 VA 85 260 Vace max 4 5 VA 16 V 35 Vac max 4 5 W 19 V 50 Voc Measurement input thermocouple type K S J T N R B E 200 C 1370 C 50 C 1768 C 210 C 1200 C 200 C 400 C 200 C 1300 C 50 C 1768 C 250 C 1820 C 200 C 1000 C Measurement range MO OZ AS OA User manual for meter with thermocouple input PAC 94T Measurement accuracy Accuracy of ends temperature compensation Outputs relay or OC type sensor power supply active current Communication interface Baud rate Display depending on version Data memory Protection level Housing type Housing material Housing dimensions Mounting hole Assembly depth Panel thickness Operating temperature Storage temperature Humidity Altitude Screws tightening max torque Max connection leads diameter Safety requirements EMC 0 25 one digit zl SG 0 2 or 4 NO 1 A 250 Vac cos 1 0 2 or 4 30 mA 30 Voc 100 mW 24 V 5 10 max 100 mA stabilized range max 0 24 mA load resistance max 700 Q current output is optional for two re
48. uppressors While use the relay outputs for switching of inductive loads coils contactors power relays electromagnets motors etc it is required to use additional suppression circuit typically capacitor 47 nF min 250 Vac in series with 100R 5 W resistor connected in parallel to relay terminals or better directly on the load In consequence of using the suppression circuit the level of generated electromagnetic disturbances is lower and the life of relay contacts rises a b N Figure 4 8 Examples of suppression circuit connection a to relay terminals b to the inductive load Depending on version 85 230 260 Vac oc or 19 24 50 Voc 16 24 35 Vac L N Figure 4 9 Connection of power supply and relays 11 12 User manual for meter with thermocouple input PAC 94T voltage input 24 V Figure 4 10 Example of OC type outputs connection optional ACTIVE current output Logic controller current input 4 20 mA Figure 4 11 Example of current outputs connection for device with current output only User manual for meter with thermocouple input PAC 94T 4 4 MAINTENANCE The unit does not have any internal replaceable or adjustable components available to the user Pay attention to the ambient temperature in the room where the unit is operating Excessively high temperatures cause faster ageing of the internal components and shorten the fault free time of unit operation In c
49. urrent output mode Omod OUT this parameter determines the input value for which the output current is equal 20 mA The output current value is calculated due to formulas given below ie HH OLTE Hi OUTLA OUT x lomA 4ma for output range 4 20mA We OUT I u A 20mA or output ranee 0 20mA OUH OUL E where W denotes the displayed value e gt E OutL parameter can be greater than OutH In this case the conversion Kg characteristic is reversed it means that if input value raises the output current falls Lo r this parameters define the output current range maximum range 0 to 24 mA Hi r If calculated output value lout exceeds defined range then current output generates the current equal to upper or lower border of the defined range The parameters define the percentage extension of nominal current range 4 20 mA with 0 1 resolution Parameter Lo r defines lower border of the range due to formula kain 4 mA z 4 mA x Lo r KC This parameter can be set from 0 to 99 9 25 User manual for meter with thermocouple input PAC 94T Parameter Hi r defines lower border of the range due to formula Imax 20 mA 20 mA x Hi r This parameter can be set from 0 to 19 9 In example on page 31 of the DISPLAY VALUES CALCULATION paragraph the procedure of the current outputs determining is presented in details AL t
50. ut signal value is contained in Zone A If two thresholds are used Figure 6 3 the relay will be turned on when value of input signal is contained in zone A modE in or Zone B modE out and turned off if the signal is contained in the second one 15 User manual for meter with thermocouple input PAC 94T state of relay LED SEtP parameter e measure sch Hr parameter Figure 6 2 One threshold control of the relay LED outputs state of relay LED SEtP or SEt2 parameter Ka TH RT T HYSt parameter measure Figure 6 3 Two thresholds control of the relay LED outputs gt The relay outputs and LEDs named R can be controlled depend on both the j current value and the peak value when peak detection is active of the input signal 16 User manual for meter with thermocouple input PAC 94T 6 3 1 One threshold mode Figure 6 4 presents the principle of relay outputs operation for one threshold mode and an example values of other parameters measured signal t SEtP parameter expected signal value displayed value t a zone A E Ge BE NAME ek 135 d s EE SF Ef EE 9 a g leben EE E RS i HYSt parameter B i SEI l allowed signal al dt BEE E Ba deviation b relay state i A 3 time modE on d ii ton 0 closed MES A ZE toFF 0 ae mn J m time C relay state i oi 14 1 modE oFF tot r

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