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User`s Manual Series SD31 Single Display PID Controller

1. Watlow Series SD31 A9 45 47 LAE 27 57 510121 57 A 16 45 47 L Gc 126 5M N25 40 A ih 1 20 32 190027 SP 22 26 40 A il 0 20 32 L in 21 Sn 44 Ah 1 20 32 LOC 15 28 51 Gn_ 44 AL o 20 32 PAA 27 29 52 GPA 1 22 51 ACL EF 27 56 07 an 19 23 28 32 37 6P 0 22 51 AcE 127 40 nLF N24 55 9 9 1 25 Addr 28 58 AL Fe 26 55 652 26 ALTA 43 O 116145 47 SUE 44 AP Tb 43 Oliy 45 47 Ec 21 AP Tn 43 O IHA 45 47 EcDO 44 46 A M 29 52 0 190 45 47 EcJe 44 46 AD LU 24 O ih 124 Ec 50 44 46 AGE 143 O ilo 24 E fic 27 40 E En 23 37 AgE 29 49 OCSP 33 41 EE 94 39 bAud 28 58 OPE 16 29 ELE 26 39 CAL 29 50 DESP 33 41 EP123 25 CESP 41 42 OEY IN 43 E SP 23 27 38 40 41 F 21 Gt Ye 44 t St 23 37 C4YS 31 Ok 123 tot t 27 40 CLM 30 53 DE 25 UN 44 46 Cer 0 24 PdEc 21 0 9 44 46 LEre 25 PbL1 30 53 Un ik 27 50 CESP 33 41 PbhE 29 53 USrr 43 49 dbl 31 54 PL N24 53 54 55 5 5 43 49 db AE 30 54 PL 2 25 53 54 55 JE 31 Pol L 29 55 JECL 31 54 Poht 29 55 dEAE 30 54 Pr ES 23 38 41 42 dFLE 43 Pr oP 31 dDL
2. 5Ph Set Point High Limit 5 t 2 Alarm 2 Silencing Fr E Enable Input Filter d 59 Pc Alarm 2 Message FLEr Filter Value ACL F AC Line Frequency E En Timer Enable Un k Units of Measurement hour Countdown Time Hours Er r Input Error Latching PN n Countdown Time Minutes FA IL Input Error Failure Mode SE Countdown Time Seconds M1An Input Error Power E St Timer Start Method d 9P Active Displays e SP Timer Set Point r P Ramp to Set Point Mode r d9 Ready Band r P5c Ramp Scale d4 Ready Light Enable rPrt Ramp Rate ddr Modbus Device Address bAud Baud Rate i OC Lockout Watlow Series SD31 17 Chapter 3 Keys and Displays Programming Page Overview Factory Page Overview The Programming Page determines what parameters the user wants to appear on the Operations Page Se The Factory Page contains information on diagnostics lect a parameter for any of the 20 Programming Page calibration and restore parameter functions locations P1 to P20 These now appear on the Opera To go to the Factory Page press both the Up O and tions Page All 20 locations have parameters selected as Down keys for about six seconds from the Home defaults To go to the Programming Page hold down the Infinity key then press the SET Key 3p and hold both down for about six seconds P
3. Low register numbers contain the two higher bytes high register numbers contain the two lower bytes of the four byte integer Decimal precision is implied at three decimal places unless otherwise noted Caution Writing to registers continuously such as ramping set points via comms will damage the SD31 EEPROM memory See page 59 Note The setting on the Setup Page determines if Process or Set Point is normally displayed and the action of the Gap Key Watlow Series SD31 19 Chapter 4 Home Display Parameter Name Settings Range Default Modbus Appears if Description Integer values for Modbus e in parenthesis Read Write Ramp Target Set Point Set Point Low Limit NA Sameas Controller is ramping The target set point for the ramp that is to Set Point High Closed in process appears in the display after Limit sp met this prompt appears oo Input Error None 0 NA 24R There is an analog in Indicate an input error state l Error 1 put error Alarm Low 1 Status None 0 NA 29R There is an Alarm 1 Indicate a low alarm at output 1 Alarm 1 low side alarm Alarm High 1 Status None 0 NA 30 R There is an Alarm 1 Indicate a high alarm at output 1 Alarm 1 high side alarm Alarm Low 2 Status None 0 NA 31R There is an Alarm 2 Indicate a low alarm at output 2 Alarm 1 low side alarm Alarm High 2 Status None 0 NA 32 R There is an Alarm 2 Indicate
4. 92 Control Methods ee 52 Output Configuration saeensaninasandam soke 52 Auto ManualControl 52 1 1 6 pi RE SE e A 53 Proportional Control same iie nek Bes KG we kka 53 PI Control a a AA AA AE PAG AA An or or 53 PIDO CONTO A YA E E E 54 Dead BING see mm reee E 54 Power limiting and power scaling 54 Nonlinear output Curve 55 Independent Heat and Cool PID 55 VariablelimeBase 55 Ramping eee ees 56 PIGUMS ea kumu e eki ein 56 Process or Deviation Alarms 56 Alarm Set Points 0 cee eee 56 Alarm Hysteresis e cee eee eee eee 57 Aldrin LACINO 4 wa aaa pama MAA ee a a ee 57 Alarm Silencing 57 Retransmit 57 COMMUNICATIONS 70 kam PARA BB KNA HBD NYAKELA AGA iv 58 CVENIEN ca cam oe KA GN PLAN WATA AG ae ee es 58 Setting Up a Modbus Network 58 Troubleshooting ema en dene r ahaa dees eed as ae 60 Error Messages selime eke coe eee DAANG ewe ariel se el NGA 62 Watlow Series SD31 48 Chapter 10 Features Saving and Restoring User Settings Recording setup and operations parameter settings for future reference is very important If you uninten tionally change these you will need to program the cor rect settings
5. 21 Chapter 6 Operations Parameters Table 29 Chapter 7 Programming Page 34 Chapter 8 Countdown Timer 36 Chapter 9 Factory Page and Calibration 43 Chapter10 Features 48 Saving and Restoring User Settings 49 Operations Page 49 ANC APA AA 49 Manual Tuning 2 4 2 oe OS ae cae eae hicmi 50 INDUTS 2 6 ees 50 Control Methods 52 AAO sas perar ie mi RE ve Ea e e KYA 56 Communications 58 Troubleshootingg 60 Error Messages www mmi sa bri bm b ia 62 Appendix snra zda iie ia 63 Specifications viski KA aaa be 63 Ordering Information 65 MOG awake wea oe EY RA AK TA 66 Prompt Index emi ek Pe ew RAM e WA 68 Declaration of Conformity Inside Back Cover Watlow Series SD31 1 Table of Contents 1 Overview The Watlow Series SD31 PID is a microprocessor based temperature controller available in the 1 32 DIN panel mount size The Series SD31 has a single uni versal input that accepts various thermocouples RTDs resistive temperature devices or process inputs See the Specifications in the Appendix for further details The Series SD31 PID controller offers up to two outputs Outputs can be configured as heat cool timer retransmit alarm or off deactivated The control out puts can be independen
6. OCSP 40 Open Loop Control Set Point Note All parameter locations have the same range of possible values Display Parameter Name Settings Range Default Modbus Appears if Description Integer values for Modbus in paren Timer re eg theses Standard Read Write Parameter Location 1 nont 0 None 48 R W All parameter locations AL 1 Calibration Offset always appear on the P2 Parameter Location 2 C F 2 Temperature Units Setup Page Pa 49 R W Programming Page A iL o 3 Alarm 1 Low A P FD P3 Parameter Location 3 A ih 4 Alarm 1 High SE 50R W Only appears when Rci o 5 Alarm 2 Low Aut the timer option is pres PY Parameter Location 4 Ach 6 Alarm 2 High d9 51 R W ent SD31 XXXX H95 9 Alarm Hysteresis 1 Setup Page CAL XTXX P59 Parameter Location 5 H950 10 Alarm Hysteresis 2 Setup Page TESP 52 R W ss Addr 12 Modbus Device Address Setup REPT P6 Parameter Location 6 id 13 Autotune Paht 53 R W bht SEE A Pn 14 Auto Manual P Parameter Location 7 Pah 15 Power Heat Huk 54 R W Pal L 16 Power Cool rEhE PB Parameter Location 8 DEP 17 Heat Control Method CAL 55 R W PERE 18 Prop Band Heat cAhe P9 Parameter Location 9 TERE 19 Integral Heat OR HEP 56 R W r Eht 19 Reset Heat IhhYS P 0 Parameter Location 10 dEht 20 Derivative Heat OR
7. 29 Chapter 6 Operations Display Parameter Name Description Rate Heat rA ht dE ht dB ht h hyS LLM CL M Pb CL rE CL It CL Set the PID rate time in minutes for the heat output Derivative Heat Set the PID derivative time in minutes for the heat outputs Dead Band Heat An offset of the heating proportional band from the set point Heat Hysteresis Set the control switching hysteresis for on off control This determines how far into the on region the input needs to move before the output actually turns on Cool Control Method Set the Cool Control Method Proportional Band Cool Set the proportional band for the cool outputs Reset Cool Set the PID reset in repeats per minute for the cool output Integral Cool Set the PID integral in minutes per re peat for the cool outputs Settings Range Integer values for Modbus in parentheses 0 00 to 9 99 minutes 0000 to 9990 0 00 disabled 0 00 to 9 99 minutes 0000 to 9990 0 00 disabled 0 to 999 0000 to 999000 1 to 999 degrees if is setto E clor rtd 1000 to 999000 0 000 to 999 999 units if is set to or 0000 to 999999 off 0 PID 1 on off 2 1 to 999 F if is set tol tEcjorl rtd 1000 to 999000 0 000 to 999 0 if ER is set tol P94 or uol lt 0000 to 999000 0 00 to 99 99 repeats per minute 0000 to 999
8. Gt lis setto IDEAL or PrAL GE dlissetto IDEAL or Pr AL GE dlissetto IDEAL or Pr AL Timer model only SD31 XXXX XTXX Gt Nor Qk elis set tole PA Timer model only SD31 XXXX XTXX COE Nor Qk elis set tole PA Note Parameters appear on the Operations Page only if activated from the Programming Page See page 16 for Operations Page defaults Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus Low register numbers contain the two higher bytes high register numbers contain the two lower bytes of the four byte integer Decimal precision is implied at three decimal places unless otherwise noted Caution Writing to registers continuously such as ramping set points via comms will damage the SD31 EEPROM memory See page 59 Watlow Series SD31 32 Chapter 6 Operations Display SEc Ct SP Ot SP rd rdY CC SP OC SP Parameter Name Description Countdown Time Seconds Set the number of seconds remaining for the countdown time Closed Loop Timer Set Point Set the set point to be used during the timer sequence if the controller is in the auto mode Open Loop Timer Set Point Set the power level to be used during the timer sequence if the controller is in the manual mode Ready Band Set the deviation band in degrees from set point that would be considered a ready
9. Infinity Key Returns to the Home Page Press and hold the Infinity Key for about 2 seconds to enter the Operations Page Clears latching alarms Note After 60 seconds with no key presses the controller reverts to the Home Page Watlow Series SD31 14 Active Output Indicator Lights Lit when the correspon ding controller output or alarm is on Ready Status Indica tor Light timer op tion only Lit when the correspon ding controller output is on Auto Manual Control Indicator Light On Manual Mode open loop control Off Auto Mode closed loop control Up and Down Keys On the Home Page adjusts the set point you may need to press and hold the Gap Key depending on setting On other pages selects parame ters or allows changing parameter values when E Key is pressed Chapter 3 Keys and Displays Home Page Overview The Home Page is the default display of the Series SD31 controller The Home Page can be configured to display either the process value or set point value see the prompt on the Setup Page This parameter determines what parameters and values are displayed Automatic Mode O The indicator light is off i Actual temperature Press Gap Key Set point value Use Up O or Down Q keys to raise or lower the set point Nai Manual Mode The indicator light is on Actual temperature Press dap Key Output power setting Use Up or Down key
10. Rut Watlow Series SD31 35 Chapter 7 Programming 8 Countdown Timer The optional countdown timer SD31 XXXX XTXX only provides a versatile timer function that allows countdown timing that can toggle set points and trigger outputs based on timer settings During timing the controller can au tomatically change to a different set point and then revert to the original set point after timing completes Either or both of the SD31 s outputs can be designated for the timer output function which will allow the timer to manip ulate the output before during and after timing Timing can also be linked to the ready band which can stop the timer sequence if the process temperature deviates from the current controller set point The timer can be used in either the automatic mode or the manual mode with setting support for both open loop and closed loop set point presets Timer Sequence The timer can always be started by pressing the Down Q key from the Home Page A timer sequence can include e Switching to a timer set point e Counting down the time e Triggering a timer output e Stopping the countdown using the ready band Countdown Timer Keys e To start the timer sequence Press the Down Q key e To re start the timer sequence at the beginning Press the Down Q key e To acknowledge the ready state when using the ready with acknowledge method Press the Down key e To stop the timer sequence before it is complete Press the Up
11. Watlow Series SD31 44 Chapter 9 Factory Display Parameter Name Default Modbus Appears if Description Integer values for Modbus ye in parentheses Rend Write Input Calibrate 4 0 mA NA Always active A Calibrate the process current input to 4 0 YES mA see Calibrating the Series SD31 Input Calibrate 16 0 mA NA Always active A 16 Calibrate the process current input to YES 16 0 mA Output 1 Calibrate 1 0 Volt NA Process output installed 01 1v The voltage process output transmits YES for Output 1 1 000V Output 1 Calibrate 9 0 Volt NA Process output installed 01 9v The voltage process output transmits YES for Output 1 9 000V 0 149A Output 1 Calibrate 4 0 mA NA Process output installed 01 4A The current process output transmits YES for Output 1 4 000 mA 0116 Output 1 Calibrate 16 0 mA NA Process output installed 01 16 The current process output transmits YES for Output 1 16 000 mA The Series SD31 controller can be calibrated only with the front panel controls These parameters are not accessible through serial communications Watlow Series SD31 45 Chapter 9 Factory Calibrating the Series SD31 Warm up the unit for 20 minutes To reach the cali bration parameters enter the Factory Page by pressing and holding both the Down Key Q and Up Key O for six seconds Once on the Factory Page FACE use the Down Key Q to select a parameter Press and hold the Ga Key to vie
12. amp during timing ON after timing then OFF Signal OFF Signal Time Timer e Output 2 is ON before amp during timing OFF after timing then ON Chapter 8 Timer Signal Time Minutes SN i S M1 S M2 Signal Time Seconds 155 1 S S1 8 82 Display Default dSP Actual Process Time Ac ti Time Actual Process ti Ac Time Set Point ti SP Time Actual Process toggle to tt Watlow Series SD31 Set the number of minutes for the signal time Signal time appears with the Signal On and Signal Off timer output functions This is the time for which a timer output will either be energized or de energized at the end of the timer countdown Each timer output can independ ently have a signal time pro grammed Set the number of seconds for the signal time Signal time appears with the Signal On and Signal Off timer output functions This is the time for which a timer output will either be energized or de energized at the end of the timer countdown Each timer output can independ ently have a signal time pro grammed When the timer is enabled four additional choices exist for the dis play default The primary display is the normal display prompt The secondary display if available will display the secondary prompt for five seconds after a press of the Gap key and then return to the primary prompt Countdown time is the primary display The actua
13. in parentheses 1999 0 to 9999 0 1999000 to 9999000 999 0 to 999 0 999000 to 999000 Delay On 0 Delay Off 1 Signal On 2 Signal Off 3 0 to 99 minutes 0 99 0 to 59 seconds 0 59 OFF Off Process Alarm Deviation Alarm Heat Control Cool Control Timer Fixed Time Base put 2 is mechanical relay 0 0 to 100 090 Variable Time Base Default Modbus less 40 001 offset Read Write Appears if 0 308 309 R W 20 0 mech relay 5 0 solid state relay 1 0 switched dc dL F Delay Off 1 310 311 R W 410 R W 0 411 RW 0 0 412 R W 0 20 0 mech relay 5 0 solid state relay 1 0 switched de 100 0 0 Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus Low numbers contain the two lower bytes high numbers contain the two higher bytes of the four byte integer Decimal precision is set in another parameter Timer model only SD31 XXXX XTXX Output 1 is a process output SD__ ___F _ ___ and gt lis set tolere Output 1 is a process output SD oOF ___ and g amp t lis set to le PE Timer model only SD31 XXXX XTXX is set to E P Timer model only SD31 XXXX XTXX is set to E P Timer model only SD31 XXXX XTXX is set to E P Output 2 is installed
14. quire two supplies Biasing and termination If the system does not work properly it may need termination resistors at each end of the network A typical installation would require a 120 ohm resistor across the transmit receive terminals 3 and 4 of the last controller in the network and the converter box Pull up and pull down resistors may be needed at the converter to maintain the correct voltage during the idle state The pull up resistor is connected be tween the positive of the DC supply and the T R terminal The pull down resistor is connected be tween the negative of the DC supply and the T R terminal Watlow Series SD31 11 Watlow p n 0830 0473 0001 6 ft comms cable Watlow p n 0830 0473 0003 Watlow p n 0830 0473 0002 Figure 11a B amp B Converters Non Isolated Converter 485SD9TB B amp B Electronics Manufacturing Company 815 433 5100 http www bb elec com 12 Volt Power 120V ac Supply Watlow p n 0803 0473 0005 Watlow p n 0830 0473 0002 Figure 11b B amp B Converters Isolated Converter 485019TB B amp B Electronics Manufacturing Company 815 433 5100 http www bb elec com EIA TIA 485 Converter Figure 11 Wiring bias and termination resistors Controllers must be wired in a daisy chain configuration Add a 120Q termination resistor on the last controller Chapter 2 Install and Wire Ethernet Gateway The EM00 GATE 0000 is a bridge that allows up to 32 W
15. resistors Output wiring is incorrect Output parameters are set incorrectly DC voltage applied to output option K solid state relay output Output wiring is incorrect For solid state relay option K and mechani cal relay option E or J power must be ap plied Output parameters are set incorrectly 60 Corrective Action Check switches fuses breakers interlocks limit devices connectors etc for energized condition and proper connection Measure power upstream for required level Verify supply power requirements using the part number Check wire size Check for bad connections Verify that is at the desired setting Verify that is at the desired setting Check Setup Page and set to correct address Check Setup Page and set to correct baud rate Look for a break in the daisy chain Verify correct connections and test wiring paths Check converter box wiring and its documen tation Reconfigure computer s COM port setup and verify that communications are ok Check the communication card documentation for settable variables and operational testing Restart PC software and check for settings agreement Verify the COM bus is active Verify operation with Watlow communications tool available at www watlow com Add termination resistors for EIA TIA 485 see Install and Wire chapter Verify the output wiring Verify the output parameter settings Solid s
16. 1 Retransmit Offset mine what parameters appear on the Setup Page E F N Output Timer Function 1 61 I Signal Time Minutes 1 5S I Signal Time Seconds 1 Setup Page Gt 2 Output 2 Function Control Method 2 Fixed Time Base 2 Power Limit 2 Output Power Scale Low 2 Output Power Scale High 2 Output Non linear Function 2 Output Timer Function 2 Signal Time Minutes 2 Signal Time Seconds 2 Alarm 1 Hysteresis Alarm 1 Logic Alarm 1 Latching Alarm 1 Silencing Alarm 1 Message Alarm 2 Hysteresis Alarm 2 Logic Alarm 2 Latching MI rr 3 u gt Y SEn Sensor Type L n Linearization C F Temperature Units 5dEt Temperature Decimal Places PdEfl Process Decimal Places ISE n InfoSense Enable SP InfoSense Point 1 15 P0 InfoSense Point 2 15 P3 InfoSense Point 3 15PY InfoSense Point 4 Sci o Process Scale Low Sch Process Scale High P LL E Process Input Low Error P IHE Process Input High Error r L o Units Scale Low r Gh Units Scale High SPL o Set Point Low Limit N rr o ru o er Mu O WN re ny O N pa M 3 er n Ny rr N Mu UN 3 3 yi IN T Mu ba ng LC KN er LO nN ro DO rr T kad O NN O ba LC Wn a re LO N ru re DO tr AU
17. 160 R W Ge lis set to hERE 000 to 10000 or CooL Two decimal places implied for Modbus 0 0 to 100 0 0 161 R W Ge HissettolhEfe 000 to 10000 or Cool Ctr lis set Two decimal places implied to and Output 1 for Modbus is not a process output not SD__ _F__ a 0 0 to 100 0 100 162R W Ge lis set to hE At 000 to 10000 or Cool Ctr iis set Two decimal places implied to and Output 1 for Modbus is not a process output notSD__ _F__ nata OFF off 0 0 163RW YE lis set to hEAt Cry curve 1 1 or Cool Cru curve 2 2 NA milliamperes 0 0 147RW Output 1 isa process vol t volts 1 output SD__ _F__ ____ 0 00 to 20 00 mA 4 00 mA 148 149 Output 1 is a process if output is set to mA R W mA output 0000 to 20000 0 00V 152 153 SD F 0 00 to 10 00V R W V if output is set to volts 0000 to 10000 0 00 to 20 00 mA 20 00 mA 150 151 Output 1 is a process if output is set to mA R W mA output 0000 to 20000 10 00V 154 155 SD F I 0 00 to 10 00V R W V if output is set to volts 0000 to 10000 Process Value 0 0 305R W Output 1 is a process Set Point 1 output SD oOF ___ and g amp t lis set to 1999 0 to 9999 0 0 306 307 Output 1 is a process 1999000 to 9999000 R W output SD__ ___F _ o andi e lis set to Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus Low register numbers contain the two higher
18. Europe Watlow GmbH Industriegebiet Heidig Lauchwasenstr 1 Postfach 1165 Kronau 76709 Germany Telephone 49 0 7253 9400 0 Fax 49 0 7253 9400 44 Watlow France S A R L Immeuble Somag 16 Rue Ampere Cergy Pontoise CEDEX 95307 France Telephone 33 1 3073 2425 Fax 33 1 3073 2875 Watlow Italy S R L Via Meucci 14 20094 Corsico MI Italy Telephone 39 02 4588841 Fax 39 02 458 69954 Watlow Limited Robey Close Linby Industrial Estate Linby Nottingham England NG15 8AA Telephone 44 0 115 9640777 Fax 44 0 115 9640071 Latin America Watlow de M xico Av Fundici n 5 Col Parques Industriales Quer taro Qro M xico CP 76130 Telephone 52 442 217 6235 Fax 52 442 217 6403 Asia Pacific Watlow Australia Pty Ltd 23 Gladstone Park Drive Tullamarine Victoria 3043 Australia Telephone 61 39 335 6449 Fax 61 39 330 3566 Watlow China Inc 179 Zhong Shan Xi Road Hong Qiao Cointek Bldg FI 4 Unit P Shanghai 200051 China Telephone 86 21 6229 8917 Fax 86 21 6228 4654 Watlow Japan Ltd K K Azabu Embassy Heights 106 1 11 12 Akasaka Minato ku Tokyo 107 0052 Japan Telephone 81 03 5403 4688 Fax 81 03 5403 4646 Watlow Korea Co Ltd 3rd F Taehong Bldg 20 6 Seocho gu Yangjae dong Seoul Korea 137 130 Telephone 82 2 575 9804 Fax 82 2 575 9831 Watlow Malaysia Sdn Bhd 38B Jalan Tun Dr Awang 11900 Bayan Lepas Penang Ma
19. Heat and Cool PID 55 Infinity Key 14 Index 66 INFOSENSE 21 50 INFOSENSE 1 4 21 INFOSENSE Temperature Sensing 3 50 Input Accuracy 63 Input Accuracy Span Ranges 63 Input Calibrate 1 0 Volt 44 Input Calibrate 16 0 mA 45 Input Calibrate 4 0 mA 45 Input Calibrate 9 0 Volt 44 Input Error 15 20 27 52 62 Input Error Failure Mode 27 52 Input Error Latching 27 52 66 Input Error Power 27 Input Filter 22 51 Input Power Wiring 6 Input ranges 63 Inputs 50 inputs and outputs 2 Install and Wire 4 Installation 5 Integral Cool 30 53 Integral Heat 29 53 Integral Term 31 IP65 NEMA 4X seal 4 5 Isolation 6 7 9 10 11 Isolation Blocks 6 Keys and Displays 14 Latching Input Error 27 52 Latching Alarm 26 27 57 Lockout 28 51 Low Voltage AC Power Wiring 6 Manual open loop Control 19 33 41 52 Manual Mode 14 52 Maximum Recorded Ambient Temp 43 Measured Value 19 Minimum Recorded Ambient Temp 43 Minutes 19 22 25 26 32 36 Modbus Device Address 27 Modbus Network 58 Modbus RTU protocol 58 Model Numbers 64 National Electric Code NEC 6 7 8 9 10 NEMA 4X4 5 Non latching Alarm 57 Non latching Input Error 27 Nonlinear output curve 24 25 55 On Off Control 30 52 Open Loop 19 33 52 Open Loop Output Power 19 Open Loop Control Set Point 33 41 Open Loop Timer Set Point 33 40 Operating Environment 63 Operating Ranges 63 Operations Page 16 29 49 Operations Page Overview 16 Operat
20. O key Countdown Timer Displays Timer Colon The colon helps to indicate the status of the timer function The colon blinks when timing is occur ring and is lit steady when timing is paused or not occurring Colon Blinks Colon Steady During timer countdown Before and after timing After countdown but during signal timing When waiting on the Ready Band Time Display The time for the countdown timing is recorded in terms of hours minutes and seconds The dis play of the time is a floating display that will display in hours and minutes until the hours countdown to zero at which time the display will shift to displaying minutes and seconds Watlow Series SD31 36 Chapter 8 Timer Timer Enable Set to to enable the timer Set the number of hours for the countdown time Set the number of minutes for the countdown time Set the number of seconds for the countdown time Timer Start Method Immediate Method Timer sequence starts on a Down Q key press at the Home Page Timer count ti St down starts immediately Timer does not make use of the Ready Band Ready Method Timer sequence starts on a Down Q key press at the Home Page Timer count down is linked to the ready status Timing is auto matically paused until the process value is within the Ready Band Timing is automatically continued once the process value returns to within the Ready Band Ready with Acknowledge Method Timer se quence starts on a Down Q key press at
21. OF 25 39 P o9 18 34 dL On 25 39 PSH 24 53 54 55 DSP 27 PSH 26 53 54 55 d5P 126 PSL N24 53 54 55 d5Pe 27 PSL 2 25 53 54 55 d9PL 43 PUJr 23 37 44 ErAb 62 r 15 44 46 Ef 5 62 7 38G 44 46 Er In 15 20 52 62 ACL 31 54 FA IL 27 52 53 r AhE 30 54 FAct 43 d4 23 38 FLEr 22 51 rd YL 23 38 Feb 124 r ECL 30 53 FEb 25 rEht 26 41 FErE 22 51 rE5t 43 46 47 AAYS 30 r Ih 122 52 hour 19 23 28 32 37 r3lo 22 52 HEP 29 53 P 15 19 27 56 hys 26 57 r Pr amp 28 56 h950 26 57 rP5c 28 56 lEr r 27 52 r Pt 9 15 20 IP Ad 23 37 Sbidg 44 i5 En 21 50 5dE 21 SP N21 50 eh 122 51 SPP 21 50 5c 0 22 51 15P3 21 50 666187 15 P4 21 50 SEn 21 51 62 6 31 5 90F 39 ECU 30 53 5901 39 TERE 29 53 16 g 44 LAE N26 57 G L 126 57 Declaration of Conformity Series SD Watlow Winona Inc 1241 Bundy Bivd Winona MN 55987 USA Declares that the following product Designation Series SD Model Numbers SD 3 4 6 8 or 9 Any letter or number H or L C F J or K A C J K or U A C E F or K A or R any three letters or numbers Classification Temperature control Installation Category II Pollution degree 2 Rated Voltage Frequency 100 to 240V ac 50 or 60 Hz or 24 to 28 V ac 50 or 60 Hz or dc Rated Power Consumption 10VA maximum Meets the essential requirements of the shown below to indicate compliance following European Union
22. Output 1 Switched DC SD31 _C__ e Supply current 30 mA dc maximum e Supply voltage 6 to 12V dc e Not recommended for switching mechanical relays e Output supplies power ae 6to12V dc 5 der j gt lt fo 6 dc Figure 9b Output 1 Process SD31 FC zr o e Analog output is scalable between 0 to 10V dc or 0 to 20 mA dc e Load capability voltage 1 kO minimum current 800 2 maximum e Output supplies power e Cannot use voltage and current output at the same time amps 5 Sa volts 6 com 7 EL Figure 9c Output 2 Mechanical Relay SD31 J e Form A contact e 2 A resistive e 125 VA pilot duty 120 240V ac inductive e See Quencharc note e 240V ac maximum e 30V dc maximum e For use with ac or dc e Minimum load current 10 mA e Output does not supply power Mechanical Relay 9 Chapter 2 Install and Wire A Warning Use National Electric NEC or other country specific standard wiring and safety practices when wiring and connecting this con troller to a power source and to electrical sensors or peripheral devices Failure to do so may re sult in damage to equipment and property and or injury or loss of life Quencharc Note Switching pilot duty inductive loads relay coils solenoids etc with the mechanical relay or solid state relay output op tions requires use of an R C suppressor Watlow carries the R C sup pressor Quenchar
23. PbhE 57 R W r AhE 20 Rate Heat CUP PIN Parameter Location 11 dbht 21 Dead Band Heat rEht 58 R W hh YS 22 Heat Hysteresis Poli Pie Parameter Location 12 CLL 1 23 Cool Control Method cr Ahe 59 R W PbL L 24 Prop Band Cool rect e N IEC L 25 Integral Cool OR 60 R W P13 Parameter Location 13 ELL 25 Reset Cool Pi eo F dEL L 26 Derivative Cool OR P 4 Parameter Location 14 ALL 26 Rate Cool Pare 61 R W Cun na dbf L 27 Dead Band Cool P15 Parameter Location 15 Th YS 28 Cool Hysteresis 2 Ef i 7 62 R W P16 Parameter Location 16 a D i adan 2 RC U 63 R W dE 31 Derivative Term 7 64 R W Pi Parameter Location 17 PFE 82 Ramp Rate Setup Page a Ah l hour 33 Countdown Timer Hours P18 Parameter Location 18 P0 im 34 Countdown Timer Minutes A iLo 65 R W SE c 35 Countdown Timer Seconds Relo P19 Parameter Location 19 CESP 36 Closed Loop Timer Set Point Aeh 66 R W DESP 37 Open Loop Timer Set Point nont P2G Parameter Location 20 0Y 38 Ready Band Ael o 67 R W COS P 39 Closed Loop Control Set Point nont Low register numbers contain the two higher bytes high register numbers contain the two lower bytes of the four byte integer Decimal precision is implied at three decimal places unless otherwise noted Timer version only SDXX XXXX XTXX Watlow Series SD31 34 Chapter 7 Programming Programming Paye Example An
24. Time Base 1 Cycle Time Set the time base for Fixed Time Base Control Power Limit 1 Set the maximum power output for a con trol output Output Power Scale Low 1 Set the low end of the range within which the output will scale Output Power Scale High 1 Set the high end of the range within which the output will scale Output Nonlinear Function 1 Select a nonlinear output curve to match the response of your system Analog Output 1 Units Set the analog output units Analog Output 1 Scale Low Set the low scale for the process output Analog Output 1 Scale High Set the high scale for the process output Output 1 Retransmit Source Set the control variable that the retrans mit signal represents Output 1 Retransmit Low Scale Set the low scale for the retransmit output Settings Range Default Modbus Appears if Integer values for Modbus kaba ng j theses 1M paren Read Write Fixed Time Base 0 0 144R W DE NissettolhERE Variable Time Base or and output 1 typeisSD__ _C__ _ _orSD__ _K__ 1 0 to 60 0 seconds if Out 20 0 mech 145 146 GE lis set to HE AE put 1 is a mechanical relay relay R W or Cool Cer iis set 1000 to 60000 FE solid to and Output 1 0 1 to 60 0 seconds if Out state relay a PEO EE UNDUE put 1 is not a mechanical Oil mot SD__ _F__ relay de e 100 to 60000 0 0 to 100 0 power 100 0
25. WATVIEW is available in three edi tions each offering increasing levels of functionality If you need functionality beyond WATVIEW or need to interface with an existing software package many other third party software packages can interface with the Se nies SD31 When purchasing a third party software package be sure to look for a package that is Modbus RTU compati ble or has Modbus RTU drivers Most third party pack ages require you to specify the Modbus registers of the controller to setup the package Another option is to custom create a software pack age Using the Modbus register and data information in this user s manual a software package can be created and tailored to the desired application To assist in ap plication development Watlow offers WATCONNECT which is a Windows based software library for Modbus RTU communications For further information on WATVIEW software packages the WATCONNECT software library or to download the Comm software go to the Watlow web site at http www watlow com Chapter 10 Features 5 Configure the software s communications parameters A software package be it software for a Computer a PLC or an OIT will need to be configured just as the controller was configured setting the Baud Rate and Address to match The software package may have addi tional parameters to set such as number of data bits parity and stop bits For Watlow controllers using mod bus t
26. a high alarm at output 2 Alarm 1 high side alarm Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus Low numbers contain the two lower bytes high numbers contain the two higher bytes of the four byte integer Decimal precision is set in another parameter Caution Writing to registers continuously such as ramping set points via comms will damage the SD31 EEPROM memory See page 59 Watlow Series SD31 20 Ghapter 4 Home O Setup Page To go to the Setup Page press both the Down Q and Up O keys for three seconds from the Home Page will appear in the display e Press the Down or Up keys to move through the Setup Page parameters e To view or change a parameter value press and hold the dap Key e Press the Down Yor Up O keys to change the parameter value e Press the Infinity Key at any time to return to the Home Page Display PoE ro e 63 Q m DEN bi M Bb T DAN scan E les Ar SN FI D m Ny TH Din PU 0 ly DAN Kg Po N A Parameter Name Description Sensor Type Set the analog sensor type Thermocouple Linearization Set the analog input thermocouple linearization Temperature Units Set the temperature units for thermocou ple and RTD inputs Temperature Decimal Places Set the decimal places for the displayed input value for thermocouple and RTD typ
27. and change to by pressing the Down Key Release the Ga Key The current output value appears in the display Press the Up O or Down Key to adjust the display value to match the value from the volt ammeter The unit should stabilize within one second Repeat until the volt ammeter reads 16 00 mA 0 1 mA Press the Down Key to store the value and move to the next parameter or press the Infinity Key to exit the Factory Page 9 Rewire for operation and verify calibration Restoring Factory Calibration 47 Press the Up and Down keys together for six seconds until F AL appears in the display Press the Down Key to step through the parame ters until the appears Press and hold the G49 Key and change to by pressing the Down Key Release the Ga Key and press the Infinity Key to exit the Factory Page Chapter 9 Factory Features Saving and Restoring User Settings 49 Operations Page vw aa a AA KAG e e 49 PULOCUMING aaa KA twee oe PAULA ANAK ce ee MAM 49 Manualluning ina 50 LAVA PAA AA APA AA 50 INFOSENSE Temperature Sensing 50 Calibration OSet AP We es 50 FilterlTimeConstant 51 Sensor Selection 51 Access LOCKOUL e haa r sr e Reed GMA erri 51 Set Point Low Limit and High Limit 51 High Scale and Low Scale 51 High Range and Low Range
28. approach to the new set point If you increase Rate too much the approach to the set point will be very sluggish Repeat as neces sary until the system rises to the new set point without overshoot or sluggishness With the parameter set at Setup Page Integral will appear in place of Reset and Deriva tive will appear in place of Rate Integral is the reciprocal of reset For Integral in stead of reset use the values in parentheses For additional information about autotune and PID control see related features in this chapter Inputs INFOSENSE Temperature Sensing Watlow s INFOSENSE feature can improve tem perature sensing accuracy by 50 Watlow s INFO SENSE thermocouples and RTD temperature sensors must be used together to achieve these results Each INFOSENSE smart sensor contains four numeric values that are programmed into the SD mem Watlow Series SD31 ory These values characterize Watlow sensors for the controller to provide greater accuracy Turn the INFOSENSE feature on or off with INFOSENSE M Enable Setup Page Set the four numerical values supplied with Watlow s INFO SENSE in the SP I 15 P0 and parameters Contact your Watlow salesperson or Watlow author ized distributor for the pricing and availability of Wat low INFOSENSE products ISI IS2 IS3 IS4 123 456 789 258 ya The four numerical values are found on the tag at tached to
29. bytes high register numbers contain the two lower bytes of the four byte integer Decimal precision is implied at three decimal places unless otherwise noted Caution Writing to registers continuously such as ramping set points via comms will damage the SD31 EEPROM memory See page 59 Watlow Series SD31 24 Chapter 5 Setup Display Parameter Name Description ti F1 S M1 S S1 Gt e Ot2 Litre Ctr2 Ftbe Ftb2 PL2 PSL2 Output 1 Retransmit High Scale Set the high scale for the retransmit output Output 1 Retransmit Offset Set the high scale for the process output Output Timer Function 1 Select the states for a timer output during the timing sequence Signal Time Minutes 1 Set the time in minutes for which an out put will go to its signal state after the countdown completes Signal Time Seconds 1 Set the time in seconds for which an out put will go to its signal state after the countdown completes Output 2 Function Set Output 2 function Control Method 2 Set Output 2 control type This parameter is only used with PID control but can be set anytime Fixed Time Base 2 Cycle Time Set the time base for Fixed Time Base Control Power Limit 2 Set maximum power output for a control output Output Power Scale Low 2 Set the low end of the range within which the output will scale Settings Range Integer values for Modbus
30. condition Closed Loop Control Set Point Set the control set point to be used when the timer is not active and the controller is in the auto mode Open Loop Control Set Point Show the current open loop manual control set point The indicator light is on when the con troller is in open loop manual control Settings Range Integer values for Modbus in parentheses 0 to 59 seconds 0 to 59000 Set Point Low Limit to Set Point High Limit Stop controlling to SP 200000001 100 0 to 0 0 if any output is set to cool 0 0 to 100 0 if any output is set to heat 10000 to 0000 0000 to 10000 Two decimal places implied for Modbus 1 9999 degrees 1000 9999000 Set Point Low Limit to Set Point High Limit Stop controlling to SP 200000001 100 0 to 0 0 if any output is set to cool 0 0 to 100 0 if any output is set to heat 10000 to 0000 0000 to 10000 Two decimal places implied for Modbus Default T5 O 10 10000 T5 0 0 Note Parameters appear in the Operations Page only if activated from the Programming Page Modbus less 40 001 offset Read Write Appears if 377 R 404 405 R W 406 R W F395 396 R W 27 28 26 R W Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus Low numbers contain the two lower bytes high numbers
31. gt by Re tr oh ER EE 3 mj 0 F 5 St cf t rE ht an mM r It ht Parameter Name Description Power Heat Displays the current heat control power Power Cool Displays the current cool control power Auto Manual Mode Set the control mode Autotune Start an autotune Calibration Offset Offset the input reading Heat Control Method Set the heat control method Proportional Band Heat Set the proportional band for the heat outputs Reset Heat Set the PID reset in repeats per minute for the heat outputs Integral Heat Set the PID integral in minutes per re peat for the heat outputs Settings 0 0 to 100 0 power To view or change a parameter value press and hold the Gp Key Press the Down Q or Up O keys to change the parameter value Press the Infinity Key at any time to return to the Home Page Range Default Integer values for Modbus in parentheses NA 000 to 10000 Two decimal places implied for Modbus 0 0 to 100 0 power 000 to 10000 Two decimal places implied for Modbus auto mode 0 manual mode 1 off 0 on 1 NA 0 0 999 to 999 999000 to 999000 off 0 P id PID 1 on off 2 1 to 999 F if is set to 25 Ecjor rtd 1000 to 999000 0 000 to 999 units if SEN is set tol M f orlyolel 0000 to 999000 0 00 to 99 99 repeats per minute 0000 to 99990 0 00
32. indicate the direction of pull to remove the connectors IP65 NEMA 4X Seal Example Tarminal Cover Agmowal Make the panel cutout using the mounting template dimensions in this chapter Check that the rubber gasket lies in its slot at the back of the bezel Insert the controller into the panel cutout While pressing the bezel firmly against the panel slide the mounting bracket over the back of the controller If the installation does not require an IP65 NEMA 4X seal slide the bracket up to the back of the panel enough to eliminate the spacing between the gas ket and the panel For an IP65 NEMA 4X seal use your thumb to lock the tabs into place while pressing the controller from side to side Don t be afraid to apply enough pres sure to properly install the controller If you can move the controller back and forth in the cutout you do not have a proper seal The tabs on each side of the bracket have teeth that latch into the ridges Each tooth is staggered at a different depth from the front so only one of the tabs on each side is ever locked into the ridges at any time Kither the two middle tabs or the two tabs diagonal from each other will be engaged If the matching tabs are not engaged you do not have an IP65 NEMA 4X seal The space between the bezel and panel must be 0 to 0 48 mm 0 to 0 019 in maximum Removing the SD31 Controller 1 Remove the terminal cover and all the wiring connectors from the back of
33. may result in the output chattering On off control can be selected with Heat Control Method or Cool Control Method Operations parameters NOTE Input Error Failure Mode does not function in on off control mode The output goes off NOTE In on off control set Power Limit 1 and 2 PL and and Output Power Scale High 1 and 2 PSH and PS HE to 100 Set Output Power Scale Low 1 and 2 and PSL to 0 The heating action switches off when the process temperature rises above the set point Set Point Temperature Hysteresis N Process Temperature The heating action switches on when the process temperature The heating action drops below the set point minus the hysteresis switches on at startup Time The cooling action switches on when the process temperature rises above the set point plus the hysteresis Hysteresis The cooling action switches on at startup Process Temperature Set Point Temperature The cooling action switches off when the process temperature drops below the set point Time Proportional Control Some processes need to maintain a temperature or process value closer to the set point than on off control can provide Proportional control provides closer control by adjusting the output when the temperature or process value is within a proportional band When the value is in the band the controller adjusts th
34. of Contents 1 Temperature Decimal Places 21 Temperature set point 15 Temperature Units 21 Terminals 64 Thermocouple Input Wiring 7 Thermocouple Input Calibration 46 Thermocouple Linearization 21 Thermocouple OmV 44 Thermocouple 32 F 44 Thermocouple 50mV 44 Timer Enable 23 37 Timer Set Point 23 38 41 Timer Start Method 23 37 Timer indication 14 Troubleshooting 60 Two wire capability 11 Units of Measurement 27 Units Scale High 22 52 Units Scale Low 22 52 Universal Input 63 Up and Down Keys 14 Variable Time Base 24 25 55 Voltage Process Input Calibration 46 WATCONNECT 58 Watlow web site 58 WATVIEW 2 12 58 Wiring 0 to 10V Process Input 7 0 to 20mA Process Input 8 EIA TIA 232 485 Converter 11 EM Gateway 12 High Voltage AC Power Wiring 6 Low Voltage AC Power Wiring 6 Output 1 Mechanical Relay 8 Output 1 Process 9 Output 1 Solid state Relay 8 Output 1 Switched DC 9 67 Output 2 EIA 485 10 Output 2 Mechanical Relay 9 Output 2 Solid state Relay 10 Output 2 Switched DC 10 RTD Input 7 Thermocouple Input 7 Appendix
35. rate Time Watlow Series SD31 Alarms Alarms are activated when the process value or tem perature leaves a defined range A user can configure how and when an alarm is triggered what action it takes and whether it turns off automatically when the alarm condition is over Configure alarm outputs on the Setup Page before setting alarm set points Process or Deviation Alarms A process alarm uses one or two absolute set points to define an alarm condition A deviation alarm uses one or two set points that are defined relative to the control set point High and low alarm set points are calculated by adding and or sub tracting offset values from the control set point If the set point changes the window defined by the alarm set points automatically changes with it Select the alarm type with the Setup Page parame ters View or change process or deviation set points with the Operations parameters Alarm Set Points The alarm high set point defines the process value or temperature that will trigger a high side alarm It must be higher than the alarm low set point and lower than the high limit of the sensor range The alarm low set point defines the temperature that will trigger a low side alarm It must be lower than the alarm high set point and higher than the low limit of the sensor range View or change alarm set points with the Operations parameters 56 Chapter 10 Features Alarm Hysteresis An alarm state is t
36. sensor or the controller may not be calibrated Calibration may have been corrupted Ambient temperature may be too hot or too cold Calibration may be corrupted Settings may have changed unexpectedly 62 Corrective Action Check sensor connections Check sensor connections and sensor wiring Change Sensor Type Setup Page to match the sensor hardware Restore factory calibration Press the Infinity Key to reset latched input errors Verify that the temperature surrounding the controller is 18 to 65 C 0 to 149 F Restore factory calibration Cycle power Press the Infinity Key to clear the er ror Cycle power Verify settings If error message persists contact the factory Chapter 10 Features A Appendix Specifications Controller 1 32 DIN microprocessor based user selectable control modes Heat and cool autotune for control outputs 1 Universal input 2 outputs Control outputs user selectable as on off P PI PID Display update 10 Hz adjustable digital filter Output update burst 0 1 to 999 9 seconds Communication output isolated Displayed in C F or process units Operator Interface Single 4 digit LED displays SET Infinity Home Up Arrow Down Arrow tactile keys Standard Conditions For Specifications Ambient temperature 25 C 77 F 8 C rated line voltage 50 to 60Hz 0 to 90 RH non condensing 15 minute warm up Universal Input Sampling rate 6
37. set point typically used in your process 2 Go to the Operations Page and establish values for the PID parameters Proportional Band 5 Reset 0 00 Rate 0 00 Note Autotune should be set to off 3 When the system stabilizes watch the process val ue If this value fluctuates increase the proportional band setting until it stabilizes Adjust the proportional band in 3 to 5 increments allowing time for the sys tem to stabilize between adjustments 4 When the Input has stabilized watch the percent power Po ht or Po cl It should be stable 2 At this point the process temperature should also be stable but it will have stabilized before reaching set point The dif ference between set point and actual can be eliminated with reset 5 Start with a reset value of 0 01 99 99 and al low 10 minutes for the process temperature to get to set point If it has not double halve the setting and wait another 10 minutes Continue doubling halving every 10 minutes until the process value equals the set point If the process becomes unstable the reset value is too large small Decrease increase the reset value until the process stabilizes 6 Increase Rate to 0 10 minute Then increase the set point by 11 to 17 C Monitor the system s approach to the set point If the process value overshoots the set point increase Rate to 0 50 minute Increase the set point by 11 to 17 C and watch the
38. the controller Slide a thin wide tool putty knife under all three mounting tabs on the top and then the bottom while pushing forward on the back of the case Be ready to support the controller as it slides out of the panel cutout 5 Chapter 2 Install and Wire AN Warning Use National Electric NEC or other country specific standard wiring and safety practices when wiring and connecting this con troller to a power source and to electrical sensors or peripheral devices Failure to do so may re sult in damage to equipment and property and or injury or loss of life Spring clamp wiring connector note To insert the wire push the wire into the desired connection num ber and it should automatically lock into place To remove the wire press and hold the orange release tab with a small screw driver Pull the wire out of the connection Solid or tinned wire recommended AN WARNING If high voltage is ap plied to a low voltage controller irreversible damage will occur Wiring the Series SD31 Isolation Blocks Flectrical isolation exists between each of these blocks EIA TIA 485 Communi cations Input Sensor Input Power Supply Input Switched DC Outputs Analog Process Outputs Relay outputs mechanical and solid state provide isolation through their relay contacts Each relay output is isolated from the blocks above and is isolated from other relay outputs The model number for each output opti
39. the home page Timer countdown is linked to the ready status Actual timer countdown does not start until the Down Q key is pressed again while the process value is within the ready band The timer will operate as de scribed in the ready method Power Up Method Timer sequence starts on initial power up of the controller without a key press Timer does not make use of the Ready Band After the completion of the first timer sequence a press of the Down Q key at the Home Page will repeat the timer sequence Watlow Series SD31 37 Chapter 8 Timer Timer Set Point ti SP Ready Band Value rdY Ready Light Enable rd Y L Outputl or Output 2 Function GEO Ot1 042 Watlow Series SD31 Set Point Off The normal control set point will continue to be displayed but the SD31 will use a set point of Off during the timing sequence tr Ac Set Point Tracking Uses the same set point both in and out of the timer sequence Preset Set Point Allows Preset programming of a set point for use in the timer sequence and a sepa SP rate set point for use outside of the e SP is used when not timing timer sequence e Preset is used during the timer sequence Select the acceptable range for process value deviation from the set point and still be considered in a ready status If enabled the Rdy LED is lit when the process value is within the ready band range of the set point The Ready band i
40. the sensor Calibration Offset Calibration offset allows a device to compensate for an inaccurate sensor lead resistance or other factors that affect the input value A positive offset increases the input value and a negative offset decreases the in put value The input offset value can be viewed or changed with Calibration Offset Operations parameters Negative Calibration Offset will compensate for the difference between the Sensor Reading and the Actual Temperature 4 Temperature Reading from Sensor Temperature Actual Process Temperature Time Chapter 10 Features Filter Time Constant Filtering smoothes an input signal by applying a first order filter time constant to the signal The dis played value the controlled value or both the displayed and controlled values can be filtered Filtering the dis played value makes it easier to monitor Filtering the signal may improve the performance of PID control in a noisy or very dynamic system Select filter options with Input Filter F t Select the Filter Value with Setup Page Unfiltered Input Signal EITIPpETALUTrE Time Filtered Input Signal LEIMPETALUTE Time Sensor Selection You need to configure the controller to match the in put device which is normally a thermocouple RTD or process transmitter When you select an input device the controller automatically sets the input linearization to match the sensor It al
41. 0 ____G 0 Default Modbus less 40 001 offset Read Write 266 R W 267 R W 268 269 R W This can only be set from the controller front panel This can only be set from the controller front panel 43 R W Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus Appears if Always active is set to or On is set to or On Does not appear if issetto OFF Output 2 is a communi cations output SD U Output 2 is a communi cations output SD U Always active Low register numbers contain the two higher bytes high register numbers contain the two lower bytes of the four byte integer Decimal precision is implied at three decimal places unless otherwise noted Caution Writing to registers continuously such as ramping set points via comms will damage the SD31 EEPROM memory See page 59 Watlow Series SD31 26 Chapter 5 Setup 6 Operations Parameters Table These parameters can be selected to appear on the Operations Page Select parameters to appear on the Operations Page on the Programming Page To go to the Operations Page press and hold the Infinity Key for three seconds from the Home Page will appear in the display e Press the Down Q or Up keys to move through the Operations Page parameters Display Po ht Poll Po CL paang ke E Ss 3
42. 2 to 12 AWG 6 mm 0 25 in strip length e Sensor inputs and process outputs 0 1 to 0 5 mm 28 to 20 AWG 8 mm 0 30 in strip length e Solid or tinned wire recommended for spring clamp style con nectors e Torque terminal blocks 1t06 SD C Korj o and 1to04 SD F are0 8 Nm 7 in lb Power e 100 to 240V ac 10 15 50 60 Hz 5 e 24Vz ac dc 1090 15 50 60 Hz 590 Class 2 power source is required for low voltage model e 10VA maximum power consumption e Data retention upon power failure via nonvolatile memory Operating Environment e 18 to 65 C 0 to 149 F e 0 to 90 RH non condensing e Storage temperature 40 to 85 C 40 to 185 F Dimensions e Height 29 7 mm 1 17 in Width 52 6 mm 2 07 in Behind panel 97 8 mm 3 85 in Functionality Matrix burl Control Alarm Process 485 Comm Input Input 1 Baru Sese Output 2 Note These specifications are subject to change without prior notice Appendix Ordering Information and Model Numbers S D 3 1 A A Power Supply Hor L H 100 to 240V ac L 24Vz ac dc Output 1 C K F or J C Switched DC K Solid state Relay Form A 0 5 Amp F niversal Process J Mechanical Relay Form A 2 Amp Output 2 A C K J or U A None C Switched DC K Solid state Relay Form A 0 5 Amp J Mechanical Relay Form A 2 Amp U EIA TIA 485 Modbus Communications Timer Option Aor T A None T Timer Display Color and Custom Options OR
43. 3 Proportional Band Heat 29 53 Proportional Control 53 Proportional Integral PI Control 53 Proportional Integral Derivative PID Control 54 Proportional Term 31 Quencharc 8 9 10 Ramp Rate 28 56 Ramp Scale 28 56 Ramp Target Set Point 20 Ramping 15 56 Ramping Home Page display 15 Ramping Mode 28 56 Rate Cool 31 53 Rate Heat 30 53 Ready Band 23 33 36 37 38 Ready Band Value 38 Ready Light 14 23 38 Ready Light Enable 23 38 Ready Method 37 Ready with Acknowledge Method 36 37 Removal 5 Reset Cool 30 53 Reset Heat 29 53 Restore Factory Calibration 43 46 Restore User Settings 43 Restoring Factory Calibration 47 Restoring User Settings 49 RTD Input Wiring 7 RTD Input Calibration 46 RTD 15 ohm 44 46 Watlow Series SD31 RTD 380 ohm 44 46 Save User Settings 43 49 Saving and Restoring User Settings 49 Seconds 23 26 33 36 Sensor Selection 51 Sensor Type 21 51 Serial Number 1 44 Serial Number 2 44 Set Point High 51 Set Point High Limit 22 51 Set Point Low 51 Set Point Low Limit 22 51 Set Point Off 38 Set Point Tracking 38 Setting Up a Modbus Network 58 Setup Page 21 Setup Page Overview 17 Signal Off 25 39 Signal On 25 39 Signal Time Minutes 1 25 42 Signal Time Minutes 2 26 42 Signal Time Seconds 1 25 42 Signal Time Seconds 2 26 42 Software Build Number 44 Software ID 44 Software Version 44 Specifications 63 Standard Conditions For Specifications 63 Table
44. 31 41 Chapter 8 Timer Timer Example Convection Oven Application A master chef bakes bread at 350 F for 30 minutes She wants the oven at the proper temperature with an indica tion when it is ready to begin baking She isn t concerned if the oven is 10 degrees cool at first After she loads the oven the chef wants to start the countdown time by pressing a key When the baking time is complete she wants a 10 second audible indication that the bread is done She would also like to easily be able to monitor both the count down time and the temperature during the baking process Recommended Controller Series SD31 controller part number of SD31 HCJA ATOR e Output 1 is a switched DC output connected to a Din A Mite solid state power controller to control the oven s heaters e Output 2 is an electromechanical relay connected to an audible indicator to provide the completion indication In the Setup Page program the following parameters E Set the controller to Fahrenheit E En Enable the Timer Function lhour 0 Set the hours of countdown timing to 0 PA inj 30 Set the minutes of countdown timing to 30 SEcj 0 Set the seconds of countdown timing to 0 E St Configure the timer for Ready with Acknowledge E 19P Use the preset set point for the timing sequence edy 10 Set the ready band at 10 i d YL Enable the ready light for the begin baking indication Gtel Configure Output 2 as a timer output lt Fe Selec
45. 5 Hz Thermocouple Type J K T E N C W5 D W3 PTII F R S B thermocou ple types Whole or tenth of a degree resolution gt 20 MO input impedance Maximum 20 source resistance RTD 2 or 3 wire platinum 100 Q DIN curve 00385 curve Whole or tenth degree indication 390 pA nominal RTD excitation currrent Process Range selectable O to 10V dc O to 5V dc 1 to 5V dc 0 to 20 mA 4 to 20 mA Can reverse low and high values Voltage input impedance 20 kQ Current input impedance 100 Minimum current source resistance 1 MQ e Input resolution 50 000 bits approximately at full scale Input Accuracy Span Ranges Type J 32 to 1 582 F or 0 to 750 C Type K 328 to 2 282 F or 200 to 1 250 C Type T 328 to 662 F or 200 to 350 C Type E 328 to 1 470 F or 200 to 799 C Type N 32 to 2 282 F or 0 to 1 250 C Type C W5 32 to 4 200 F or 0 to 2 316 C Type D W3 32 to 4 200 F or 0 to 2 316 C Type PTII F 32 to 2 540 F or 0 to 1 393 C Type R 32 to 2 642 F or 0 to 1 450 C Type S 32 to 2 642 F or 0 to 1 450 C Type B 1 598 to 3 092 F or 870 to 1 700 C RTD 328 to 1 472 F or 200 to 800 C Process 1 999 to 9 999 units Watlow Series SD31 63 Thermocouple Input Calibration accuracy 40 196 of input accuracy span 1 C at standard conditions Temperature stability 0 2 degree per degree change in ambient for J K T E N F 0 3 for C and D 0 4 for B R exclu
46. 90 0 00 disabled 0 00 to 99 99 minutes per repeat 0000 to 99990 0 00 disabled Default 0 00 0 00 1 0 1 000 0 25 25 000 0 00 0 00 Modbus Appears if less 40 001 offset Read Write 228 229 At least one output is R W set tolhERE hk issetto P Id and issetto US 228 229 At least one output is R W set to RERE hEr issetto P Id and issetto 5 J 279 280 At least one output is R W set to hE AE and HEE lis set to PID 232 233 At least one output is R W set to HERE and 934 235 he is set to R W onof 214 R W At least one output is set to fool 218 219 At least one output is R W set to fool and r999 223 C LAT 1s set to R W LP id 226 227 At least one output is R W set to Cool CLP Modbus o is set to _P id and ea in is set to U5 egral which is the inverse of reset 226 227 At least one output is R W set to Lool LLMI is setto P Id and issetto 5 fl Note Parameters appear on the Operations Page only if activated from the Programming Page See page 16 for Operations Page defaults Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus Low register numbers contain the two higher bytes high register numbers contain the two lower bytes of the four byte integer Decimal precision is implied at three decimal places unless other
47. A 485 The converter selected must have a two wire mode Some convert ers can only be used in a four wire mode Automatic Send Data control In a two wire system both the transmitted signals and the received signals travel over the same pair of wires so the converter must have a method of chang ing from the transmit mode to the receive mode Some converters require the toggling of a control line usually the RTS line to perform this transition while others use an automatic timing circuit The toggling method is dependent on the PC software to toggle the control line and the PC s operating system to make that transition happen in a timely manner Because of these dependencies the best choice for a converter is one with automatic control Isolation Converters are available with or without input to output isolation An isolated converter is not a re quirement when used with the Series SD31 but it is recommended to avoid ground loops Isolation could be a consideration when the Series SD31 will be used on a network with other devices that may re quire isolation Power Supply Many converters can be powered up either through the signals of a serial port or through an external power supply Because some computers such as lap tops do not always provide enough power to supply the converter we recommend using an external pow er supply with specifications as recommended by the converter manufacturer Isolated converters may re
48. Directives by using the relevant standards 89 336 EEC Electromagnetic Compatibility Directive EN 61326 1997 With A1 1998 A2 2002 EN 61000 4 2 1996 With Al 1998 EN 61000 4 3 1997 EN 61000 4 4 1995 EN 61000 4 5 1995 With Al 1996 EN 61000 4 6 1996 EN 61000 4 11 1994 EN 61000 3 2 ED 2 2000 EN 61000 3 3 1995 With A1 1998 Electrical equipment for measurement control and laboratory use EMC requirements Industrial Immunity Class B Emissions Electrostatic Discharge Immunity Radiated Field Immunity Electrical Fast Transient Burst Immunity Surge Immunity Conducted Immunity Voltage Dips Short Interruptions and Voltage Variations Immunity Harmonic Current Emissions Voltage Fluctuations and Flicker 73 23 EEC Low Voltage Directive EN 61010 1 1993 With A1 1995 Raymond D Feller III Name of Authorized Representative General Manager Title of Authorized Representative Safety Requirements of electrical equipment for measurement control and laboratory use Part 1 General requirements Winona Minnesota USA Place of Issue April 2003 Date of Issue Signature of Authorized Representative How to Reach s TOTAL CUSTOMER SATISFACTION 3 Year Warranty Your Authorized Watlow Distributor Corporate Headguarters in the U S Watlow Electric Manufacturing Co 12001 Lackland Road St Louis Missouri USA 63146 Telephone 1 314 878 4600 Fax 1 314 878 6814
49. Red Display Standard Overlay withWatlow Name 0G Green Display Standard Overlay withWatlow Name AR Red Display without Watlow Name AG Green Display without Watlow Name XX Custom Options For more information go to www watlow com or contact your Watlow representative Watlow Series SD31 65 Appendix ndex AC Line Frequency 27 AC Power Wiring 6 Access Lockout 28 51 Active Output Indicator Lights 14 Address 28 58 Adjust the set point 15 Adjusting the set temperature 15 Advance Key 14 Agency Approvals 64 Alarm 1 High 32 Alarm 1 Hysteresis 26 Alarm 1 Latching 26 Alarm 1 Logic 26 Alarm 1 Low 32 Alarm 1 Message 26 Alarm 1 Silencing 26 Alarm 2 High 32 Alarm 2 Hysteresis 26 Alarm 2 Latching 27 Alarm 2 Logic 27 Alarm 2 Low 32 Alarm 2 Message 27 Alarm 2 Silencing 27 Alarm High 1 Status 20 Alarm High 2 Status 20 Alarm Hysteresis 57 Alarm Latching 57 Alarm Low 1 Status 20 Alarm Low 2 Status 20 Alarm Message 15 Alarm Set Points 56 Alarm Silencing 57 Alarm Features 56 Ambient Temperature 43 Ambient temperature error 62 Analog Output 1 Scale High 24 Analog Output 1 Scale Low 24 Analog Output 1 Units 24 Appendix 63 Auto and Manual Control 52 Auto closed loop control 52 Auto Manual Control Indicator Light 14 Automatic Mode 15 52 Automatic Send Data control 11 Auto Manual Mode 29 Autotune 29 Autotuning features 49 B amp B Converter 11 Back View 4 Baud Rate 28 58 Biasing and termi
50. Series SD31 User s Manual Single Display PID Controller with Optional Countdown Timer gt TOTAL CUSTOMER SATISFACTION 3 Year Warranty ISO 9001 NM LOW 1241 Bundy Boulevard Winona Minnesota USA 55987 Phone 1 507 454 5300 Fax 1 507 452 4507 http www watlow com 0600 0041 0010 Rev B Made in the U S A December 2004 15 00 CAUTION or WARNING Electrical Shock Hazard CAUTION or WARNING Safety Information We use note caution and warning symbols throughout this book to draw your attention to important operational and safety information A NOTE marks a short message to alert you to an important detail A CAUTION safety alert appears with information that is important for protecting your equipment and performance Be especially careful to read and follow all cautions that apply to your application A WARNING safety alert appears with information that is important for protecting you others and equipment from damage Pay very close attention to all warnings that apply to your application The safety alert symbol AA an exclamation point in a triangle precedes a general CAUTION or WARNING statement The electrical hazard symbol a lightning bolt in a triangle precedes an electric shock hazard CAUTION or WARNING safety statement Technical Assistance If you encounter a problem with your Watlow controller review your configuration informa tion to verify t
51. Spring clamp wiring connector all model numbers note Terminals 8 and 11 must be shorted for a two wire RTD For three wire RTDs To insert the wire push the wire the S1 lead usually white must be connected to terminal 10 into the desired connection num e Nominal excitation current 390 uA ber and it should automatically lock into place To remove the wire press and hold the orange release tab with a small screw S2 gi driver Pull the wire out of the a S1 10 BB connection Solid or tinned wire a 2 wire RTD recommended GG AG Note To prevent ground loops isolation needs to be maintained ie E from input to output when using S z o switched DC or analog process SB 3 wire RTD outputs S3 11 LE Figure 7c 0 to 10V dc Process Input all model numbers A N e Input impedance 20 KQ dc only WARNING Process input may not have sensor break protec tion Outputs can remain full on Hep KE 9 o D 9 g RES 11 Ka LC maY Figure 7d 0 to 50mV dc Process Input all model numbers e Input impedance 520 M dc only PO ki Watlow Series SD31 7 Chapter 2 Install and Wire A WARNING Process input may not have sensor break protec tion Outputs can remain full on A Warning Use National Electric NEC or other country specific standard wiring and safety practices when wiring and connecting this c
52. ach control output has its own power limit For heating outputs it determines the maxi mum level of heat power and for cool outputs it deter mines the maximum level of cooling power A power limit of 100 in effect disables the power limit If the PID cal culations yield a power level that is greater than the power limit setting then the output power level will be the power limit setting For example with a power limit setting of 70 a PID calculated power output of 50 would result in an actual output power level of 50 But if the PID calculated power output is 100 then the power level will be 70 Power scaling establishes the maximum power output and the minimum power output The output power is then linearly scaled within that range The default val ues of Output Power Scale Low of 0 and Output Power Scale High of 10090 in effect disable power scaling Linear scaling allows the controller to do calculations over the full range of power 0 to 100 and adjust that calculation within the actual output span For instance if scale low is set to 15 and scale high is set to 80 the output power will always be between 15 and 80 If the PID calculation is 100 the output power will be 80 which is the same result you would get from a power limit of 80 However if the PID calculation for heat is 50 the output will be 50 of the allowable range which scales to an actual output of 47 5 Power limiting and power scaling affect t
53. age e Press the Down Yor Up O keys to move through the Factory Page parameters e Tovi arameter value press and hold the e Press the Down Q or Up keys to move through Ca Key 7 m the Programming Page parameters P1 P20 e To change a parameter value press and hold the e To view a parameter value press and hold the Gap Key and use the Down O or Up O keys to Gap Key change the parameter value e To change a parameter value press and hold the Gap Key and use the Down Q or Up O keys to change the parameter value e Press the Infinity Key at any time to return to the Home Page e Press the Infinity Key at any time to return to the Home Page Note Hardware configuration and programming selections deter Note The hardware configuration and programming selections will mine what parameters appear on the Factory Page also determine what parameters appear on the Operations Page A Programming Page selection will not appear on the Operations Page if the parameter is not active Programming Page Factory Page gt O P I Parameter Location 1 48 0 APAb Ambient Temperature P2 Parameter Location 2 49 AM 1n Minimum Recorded Ambient Temperature P 3 Parame
54. anced Control Algorithm e Improved process control WATVIEW Software e Operation configuration and data logging with a standard Windows PC Up to Two Outputs e Application versatility e Configuration flexibility Ramp to Set Point e Controls the rate of temperature changes Countdown Timer e Optional countdown timer 8 Output 1 Control or Alarm Output 2 Control Alarm or Communications Chapter 1 Overview How to use the Series SD31 controller Before you use your Series SD31 controller it must be installed and configured correctly Which setup steps you need to perform will depend on how you will use it If you purchased the controller to design into your products You will need to do the first three steps and maybe some of the fourth step Some wiring such as the final wiring of a communications connection or an alarm output for signaling an external device might be left to the end user In highly specialized applications with lit tle variation in operation and heat load the OEM might configure almost all the parameters If you purchased the controller to design and in stall into new equipment for your own use or to retrofit into existing equipment You will need to complete all four steps If you purchased the controller installed in equipment designed around it You will probably only need to do the fourth step In some instances you may need to wire it for serial com munications and
55. and is not a communica tions output is set to HEAL or and output typeisSD__ __C_ _ o orSD__ __K_ is set to HEAL or Cool and is Feb is set to HEAL or ool is set to HEAL or Cool Ctre is set tol Ft and Output 2 is not a communications output not SD__ __U_ ia Caution Writing to registers continuously such as ramping set points via comms will damage the SD31 EEPROM memory See page 59 Watlow Series SD31 25 Chapter 5 Setup Modbus Display Parameter Name Settings Range Default Appears if Description Integer values for Modbus Naba ng in parentheses Read Write PSH2 Output Power Scale High 2 0 0 to 100 0 100 0 is set to hE AL PSH2 Set the high end of the range within or Cool Cer eis set which the output will scale to and Output 2 is not a communications output not SD__ __ U_ ies Output Nonlinear Function 2 off is set to hE AE NLF 2 Select a nonlinear output curve to match curve 1 or Cool the response of your system curve 2 kt Fo Output Timer Function 2 dL n Delay On dLUF Timer model only ti F2 Select the states for a timer output during dL QF Delay Off Delay Off SD31 XXXX XTXX the timing sequence 590n Signal On is set to le PN 5930F Signal Off 510 Signal Time Minutes 2 0 to 99 0 Timer model only S M2 Set the time in minutes for which an out min
56. atlow controllers to be directly connected to EM00 GATE 0000 an Ethernet network Ethemet Gateway Modbus Data Protocol Serial Number XXXXXXYYWW The gateway provides a bridge for Modbus mes MAGAAN sages between the Ethernet bus and EIA 485 or nc kaaa BopENENENON ETA 232 links The Gateway supports full product l configuration monitoring and configuration of run time parameters via MODBUS TCP over TCP IP using a software package such as Watlow s WATVIEW The Series SD31 can be configured using WATVIEW with or without the EM Gateway ee ee GN For more information go to www watlow com and search on EM Gateway Figure 12a Connecting to the Watlow EM Gateway Ethernet to EIA TIA 485 Serial Modbus connection Controllers must be wired in a daisy chain configuration Note UL Approved Class 2 power supply required as EM Gateway power source 24V dc part 0830 0474 000 Watlow Series SD31 12 Chapter 2 Install and Wire Notes Watlow Series SD31 13 Chapter 2 Install and Wire 3 Keys and Displays Four Digit LED Display e Indicates process value or set point information WATL GO Y Or e Page name prompt name or prompt value depend ing upon the key combi nation pressed Timer Indication timer option only Colon indicates status of timer Set Key Press to view set point process or parameter values depending on setting Release da Key to view page or parameter informa tion
57. ault 0 00 0 00 1 000 NA NA NA Modbus less 40 001 offset Read Write 230 231 R W 230 231 R W 281 282 R W 236 237 R W 238 239 R W 258R 259 R 260R Appears if At least one output is settolloolt LM issetto P Id and is set to US At least one output is set to Cool EL is set to P Id and is set to i At least one output is set to and CLL is set to P id At least one output is set to and CL is set to onaF Any output is set to ihERElor lool Any output is set to ihERElor lool Any output is set to ihERElor lool Note Parameters appear on the Operations Page only if activated from the Programming Page See page 16 for Operations Page defaults Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus Low register numbers contain the two higher bytes high register numbers contain the two lower bytes of the four byte integer Decimal precision is implied at three decimal places unless otherwise noted This value multiplied by 100 equals the percent power Caution Writing to registers continuously such as ramping set points via comms Will damage the SD31 EEPROM memory See page 59 Watlow Series SD31 31 Chapter 6 Operations Display Parameter Name Description Alarm 1 Hig
58. back into the controller to return the equipment to operational condition After you program the controller and verify proper operation use to save the settings into a special section of memory If the settings in the controller are altered and you want to return the controller to the saved values use to recall the saved settings To save the Setup and Operations parameters 1 Ensure all the settings that you want to store are already programmed into the Setup Page and Oper ations parameters 2 Press the Up O and Down Q keys together for six seconds until appears in the display 3 Press the Down Key Q to step through the parame ters until the parameter appears 4 Press and hold the Gap Key and change to SEL Ilor 5E6O by pressing the Down Key O 5 Release the Gap Key and press the Infinity Key to exit the Factory Page Note Only perform the above procedure when you are sure that all the correct settings are programmed into the controller Saving the settings overwrites any previously saved collection of settings Be sure to document all the controller settings To restore a collection of saved settings 1 Press the Up and Down Q keys together for six seconds until appears in the display 2 Press the Down Key Q to step through the parame ters until the parameter appears 3 Press and hold the dap Key and change to SEE for SEE by pressing the Down Key O 4 Release the 3 Key and press the Infinity K
59. bers contain the two higher bytes high register numbers contain the two lower bytes of the four byte integer Decimal precision is implied at three decimal places unless otherwise noted Caution Writing to registers continuously such as ramping set points via comms will damage the SD31 EEPROM memory See page 59 Watlow Series SD31 21 Chapter 5 Setup Display Parameter Name Settings Range Default Modbus Appears if Description Integer values for Modbus Naba ng 1 heses in parent Read Write Process Scale Low 0 00 to 20 00 mA if 4 00 mA 10 14 is set to Sc Lo Set the low scale for process inputs is set to R W MA or yol El 0000 to 20000 0 00V ak 0 00 to 10 00V if ER is V set to 0000 to 10000 Process Scale High 0 00 to 20 00 mA if 20 00 mA 75 76 is set to Sc hi Set the high scale for process inputs is set to RW mA or volt 0000 to 20000 5 OOV 79 80 R W V 0 00 to 10 00V if is set to 0000 to 10000 Units Scale Low 1999 to 9999 1999 81 82 is set to rg Lo Set the low range for process input units 1999000 to 9999000 R W or uol t Set precision with PgEC Process Decimal Places Units Scale High 1999 to 9999 9999 83 84 is set to rg hil Set the high range for process input units 1999000 to 9999000 R W or vol El Set precision with PdEL Process Decimal Places Set Point Lo
60. c brand name which is a trademark of ITW Paktron Watlow Part No 0804 0147 0000 Note To prevent ground loops isolation needs to be maintained from input to output when using switched DC or analog process outputs Watlow Series SD31 Figure 10a Output 2 Solid state Relay SD31 K e Form A contact e 0 5 A maximum resistive e 20 VA pilot duty 120 240V ac inductive e See Guencharc note e 24 to 240V ac e Minimum load current 10 mA e Maximum leakage current 100 pA e Not for use with direct current dc e Output does not supply power Solid state Relay Solid state Switch 3 COM 4 PG koy Internal Circuitry Figure 10b NORA 2 Switched DC SD31 __C o Mein supply current 30 mA dc e Supply voltage 6 to 12V dc e Not recommended for switching mechanical relays Switched DC e Output supplies power _ eer ie ng 3 der gt 4 dc Figure 10c Output 2 EIA TIA 485 SD31 __U_ ____ e Isolated 50 V de e Half duplex e For more communications information see the Features chapter 10 Chapter 2 Install and Wire Selecting an EIA TIA 232 to EIA TIA 485 Converter When choosing an EIA TIA 232 to 485 converter look for one with the following features Two wire capability EIA TIA 485 can be implemented as a two wire sys tem or a four wire system Most Watlow controllers including the Series SD31 use two wire communica tions when working with EIA TI
61. con troller is operating properly be sure to document all of your parameter settings Each parameter table has a settings column for you to write in your values Chapter 1 Overview A Caution Follow the installa tion procedure exactly to guarantee a proper IP65 NE MA 4X seal Make sure the gasket between the panel and the rim of the case is not twisted and is seated proper ly Failure to do so could re sult in damage to equipment Note Contact your local Green lee supplier for the appropriate punch kit and cutout tools re quired for rapid mounting To remove spring clamp con nector pull straight back To remove screw clamp con nector pull straight up Spring clamp wiring connec tor note To insert the wire push the wire into the desired connec tion number and it should automatically lock into place To remove the wire press and hold the orange release tab with a small screwdriver Pull the wire out of the con nection Solid or tinned wire recommended install and Wire Series SD31 Controller Dimensions Front 53 6 mm 2 11 in 45 0 to 45 6 mm t 1 77 to 1 79 in Panel Cutout Panel Thickness 22 2 to 22 5 mm 30 7 mm 1 21 in 0 87 to 0 89 in 1 5 to 9 5 mm 0 060 to 0 375 in 12 7 mm 2 7 mm 0 50 in 0 50 in minimum minimum Top Back 100 9 mm 8 6 mm 3 98 in 0 34 in 47 2 mm Rid i Ki IN 1 86 in Tabs with Teeth mag LT NT ANA l
62. contain the two higher bytes of the four byte integer Decimal precision is set in another parameter Watlow Series SD31 Timer model only SD31 XXXX XTXX Dt Nor Bkolis set tole PA Timer model only SD31 XXXX XTXX Dt Nor Bkolis set tole PA Timer model only SD31 XXXX XTXX Gt Nor Ge cis set tolg PA Timer model only SD31 XXXX XTXX is set tol rdY or Ir d YA Control mode is and there is no input error Control mode is and there is no input error 33 Chapter 6 Operations Programming Page The Programming Page allows you to select what parameters appear on the Operations Page To go to the Pro gramming Page press the dap key and Infinity keys for six seconds from the Home Page will appear in the display e Press the Up or Down Q keys to move through the parameter prompts P1 P20 e To change a parameter value press and hold the G3p key and press the Up O or Down keys to change the value e Release the G4 key and press the Up or Down Q keys to move through the parameter prompts P1 P20 e Press the Infinity Key at any time to return to the Home Page
63. d band Integral action continues to bring the process temperature to the set point When the dead band value is zero the heating element activates when the temperature drops below the set point and the cool ing element switches on when the temperature exceeds the set point Adjust the dead bands with Dead Band Heat d b ht and Dead Band Cool Fb L Operations parameters Cooling Proportional Band Cooling Set Point Heating Set Point GOY Dean Ba nan Proportional Band Temperature Time Power limiting and power scaling Power limiting and power scaling are two methods of placing limitations on a control output The functions can be used independently or together An output level calcu lated from the PID algorithm first has the power limit applied then the resulting value is processed using pow er scaling using PID Using both power limiting and power scaling would not usually be necessary Power limiting provides a basic static cap on power while power scaling provides a more dynamic range of power limitation Note When output power must be limited in most cases power scaling will provide better autotune performance than power limiting NOTE In on off control set Power Limit 1 and 2 and and Output Power Scale High 1 and 2 and PS H0 to 100 Set Output Power Scale Low 1 and 2 and 051 2 to 0 The power limit sets the maximum power for a heat or cool control output E
64. d for 32 bit data types The first word or lower register number contains the two higher bytes The second word or high er register number contains the two lower bytes of the four byte integer value Setting Up a Modbus Network 1 Wire the controllers The Series SD31 uses an EIA TIA 485 serial port which is not typically found in a PC but can be found on many PLC s The type of port found in a typical PC is an EIA 232 port Internal KIA TIA 485 PC ports are available but the most common way for a PC to commu nicate using a EJA 485 port is with an EIA TIA 232 to EIA TIA 485 converter See Selecting an EIA TIA 232 to EIA TIA 485 converter in Chapter 2 The advantages of EIA TIA 485 are that it is less susceptible to noise and it allows a PC or PLC to com municate with multiple controllers on the same port to form a network It is important when using EIA TIA 485 to install the termination resistors along with pull up and pull down resistors to ensure reliable communi cations Some newer PCs may only have a USB port USB to serial adapters usually EIA TIA 232 are available from a variety of different PC vendors Some companies offer adapters to convert from USB to EIA TIA 485 directly Watlow Series SD31 58 2 Configure each controller s communications pa rameters on the Setup Menu using the front panel Only a couple of communications parameters need to be configured on the controller Baud Rate and Mo
65. dbus Address The choices for Baud Rate are 9600 bps 19200 bps or 38400 bps 38400 baud allows for the fastest com munication For compatibility with other devices reduc ing noise susceptibility or increasing communications distance 9600 bps could be chosen When using EIA TIA 485 all devices connected to that port must use the same Baud Rate The Modbus address is used to identify each controller on the network With EIA TIA 485 every controller on the network must have a unique address 3 Choose a device to communicate with the con troller The controller can communicate with devices such as a computer running a software program a PLC Pro erammable Logic Controller or an OIT Operator Inter face Terminal Whichever device is chosen it needs to be able to communicate using the Modbus RTU Proto col OITs would need to be ordered with Modbus RTU support PLCs would either have Modbus RTU as a standard feature or it can be made available with an I O module On a computer the software package to be used would need to have the Modbus RTU capability 4 Select a software package for the computer Select the software package based on what is re quired from the application For basic communications such as reading the process value or setting the set point Watlow has the Comm7 software package This is mainly used for diagnostics and basic communications The WATVIEW software package offers more ad vanced features
66. del only ti SP Select what set point is used during tim tr Ac Track 1 SD31 XXXX XTXX ing Pr ES Preset 2 COE Dor Qt elis set tole PA Ready Band 1 9999 10 395 396 Timer model only rdY Set the deviation band in degrees from degrees 10000 R W SD31 XXXX XTXX set point that would be considered a 1000 9999000 is set to ready condition or d YA Ready Light Enable no 0 0 400 R W Timer model only rdY L When enabled the ready light will be lit if yes 1 SD31 XXXX XTXX the process value is within the ready is set to band or Ir SYA Ot Output 1 Function OFF Off 0 3 143R W Always active Ot 1 Set Output 1 function Pr AL Process Alarm 1 dEA Deviation Alarm 2 hERE Heat Control 3 Cool Cool Control 4 N16 Retransmit 6 E 9 Timer 7 Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus Low numbers contain the two lower bytes high numbers contain the two higher bytes of the four byte integer Decimal precision is set in another parameter Timer model only SD31 XXXX XTXX Watlow Series SD31 23 Chapter 5 Setup Display Parameter Name Description Ctr1 Ftb1 PL 1 PSL1 PSH1 O1 hi r1 So r1 Lo Control Method 1 Set output 1 control type This parameter is only used with PID control but can be set anytime Fixed
67. ding 0 to 100 C and S excluding 0 to 100 C 0 5 for R and S entire input accuracy range RTD Input Calibration accuracy 0 1 of input accuracy span 1 C at standard conditions Temperature stability 0 05 degree per degree change in ambient Process Input Voltage input ranges Accuracy 10mV 1 LSD at standard conditions Temperature stability 100 ppm C maximum Milliamp input ranges Accuracy 20yA 1 LSD at standard conditions Temperature stability 100 ppm C maximum Allowable Operating Ranges Type J 32 to 1 500 F or 0 to 816 C Type K 328 to 2 500 F or 200 to 1 371 C Type T 328 to 750 F or 200 to 399 C Type E 328 to 1 470 F or 200 to 799 C Type N 32 to 2 3872 F or 0 to 1 300 C Type C W5 32 to 4 200 F or 0 to 2 316 C Type D W3 32 to 4 200 F or 0 to 2 316 C Type PTII F 32 to 2 543 F or 0 to 1 395 C Type R 32 to 3 200 F or 0 to 1 760 C Type S 32 to 3 200 F or 0 to 1 760 C Type B 32 to 3 300 F or 0 to 1 816 C RTD DIN 328 to 1 472 F or 200 to 800 C Process 1 999 to 9 999 units Output Types Output update rate 6 5 Hz Switched DC Supply voltage minimum 6V dc 30 mA Supply voltage maximum 12V dc into an infinite load Solid state Relay Optically isolated Zero cross switched Without contact suppression Minimum load current 10 mA rms Maximum current 0 5A rms at 24 to 240V ac resistive 20 VA pilot duty 120 240V ac inductive Must use RC suppre
68. disabled 0 0 1 25 0 00 0 00 to 99 99 minutes per repeat 0000 to 99990 0 00 disabled 0 00 Modbus Appears if less 40 001 offset Read Write 256 R is set to and at least one output is set to RERE 257 R is set to and at least one output is set to Cool 25 R W Always appears 215 R W At least one output is set to HEAL or Cool 85 86 Always appears R W 213 R W At least one output is set to HERE 216 217 At least one output is R W set to hEAE and 220 221 ht is set to R W LP id 994 225 At least one output is R W set to HERE hEMI Modbus issetto P Id and ate in is set to US egral which is the inverse of reset 994 225 At least one output is R W set to hEAE ht PT is setto P Id and issetto 5 fl Note Parameters appear on the Operations Page only if activated from the Programming Page See page 16 for Operations Page defaults Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus Low register numbers contain the two higher bytes high register numbers contain the two lower bytes of the four byte integer Decimal precision is implied at three decimal places unless otherwise noted Caution Writing to registers continuously such as ramping set points via comms will damage the SD31 EEPROM memory See page 59 Watlow Series SD31
69. e output based on how close the process value is to the set point The closer the process value is to the set point the low er the output power This is similar to backing off on the gas pedal of a car as you approach a stop sign It keeps the temperature or process value from swinging as widely as it would with simple on off control However when the system settles down the temperature or process value tends to droop short of the set point With proportional control the output power level equals set point minus process value divided by the proportional band value Adjust the proportional band with Proportional Band Heat P6 he or Proportional Band Cool P b L Opera tions parameters Set Point P Proportional Band Temperature Time Proportional plus Integral PI Control The droop caused by proportional control can be cor rected by adding integral reset control When the sys tem settles down the integral value is tuned to bring the temperature or process value closer to the set point Integral determines the speed of the correction but this may increase the overshoot at startup or when the set point is changed Too much integral action will make the system unstable Integral is cleared when the process value is outside of the proportional band ntegral is in effect if PID Units are set to SI and is measured in minutes per repeat A low integral value causes a fast integrating action Reset is in
70. effect if PID Units are set to U S and is measured in repeats per minute A high reset value causes a fast integrating action Adjust the integral with Integral Heat ehe or In tegral Cool amp L Operations parameters Adjust the reset with Reset Heat or Reset Cool Operations parameters Watlow Series SD31 53 Chapter 10 Features Proportional plus ntegral plus Derivative PID Control Use derivative rate control to minimize the over shoot in a PI controlled system Derivative rate adjusts the output based on the rate of change in the tempera ture or process value Too much derivative rate will make the system sluggish Rate action is active only when the process value is within twice the proportional value from the set point Adjust the derivative with Derivative Heat d E ht or Derivative Cool d E C L Operations parameters Adjust the rate with Rate Heat or Rate Cool Operations parameters Reduced Overshoot Set Point Proportional Band Proportional Band x 2 Temperature Heating Slows Time Dead Band In a PID application the dead bands above and below the set point can save an application s energy and wear by maintaining process temperature within acceptable ranges Shifting the effective cooling set point and heat ing set point keeps the two systems from fighting each other Proportional action ceases when the process value is within the dea
71. egister numbers 48 through 67 Watlow Series SD31 18 Ghapter 3 Keys and Displays 4 Home Page Press the Infinity Key at any time to go to the Home Page Depending upon the controller s status you will see some combination of the parameters listed below Normally you will see the Process Value in the display See Home Page Overview in Chapter Three After 60 seconds with no key presses the controller reverts to the Home Page Display Measured Value Set Value Measured Value Set Value Pan SEc Parameter Name Description Process Value Displays the current process value Closed Loop Set Point Show the current closed loop control set point Filtered Process Value Displays the current filtered process value Open Loop Output Power Show the current open loop manual control set point The indicator light is on when the con troller is in open loop manual control Current Ramp Set Point The current working control set point for the ramp that is in process appears in the display after this prompt appears Process Value Displays the current process value Countdown Time Hours Displays the number of hours remaining for the countdown time Countdown Time Minutes Set the number of minutes remaining for the countdown time Countdown Time Seconds Set the number of seconds remaining for the countdown time Settings Range Integer values for Modbus in parenthes
72. er PID Calculation Watlow Series SD31 Independent Heat and Cool PID In an application with one output assigned to heat ing and another assigned to cooling each will have a separate set of PID parameters and separate dead bands The heating parameters take effect when the process temperature is lower than the set point and the cooling parameters take effect when the process temper ature is higher than the set point Adjust heat and cool PID parameters are Operations parameters Cooling Side Proportional Band li ide Dead B Set Point coo ing Side Dead Band Heating Side Dead Band Temperature Heating Side Proportional Band Time Variable Time Base Variable time base is the preferred method for con trolling a resistive load providing a very short time base for longer heater life Unlike phase angle firing varlable time base switching does not limit the current and voltage applied to the heater With variable time base outputs the PID algorithm calculates an output between 0 and 100 but the out put is distributed in groupings of three ac line cycles For each group of three ac line cycles the controller de cides whether the power should be on or off There is no fixed cycle time since the decision is made for each eroup of cycles When used in conjunction with a zero cross burst fire device such as a solid state power con troller switching is done only at the zero cross of the ac line wh
73. es Process Decimal Places Set the decimal places for the displayed input value for process types INFOSENSE Enable the sensor feature which synchro nizes the controller with a Watlow sensor INFOSENSE 1 Set sensor point 1 code INFOSENSE 2 Set sensor point 2 code INFOSENSE 3 Set sensor point 3 code INFOSENSE 4 Set sensor point 4 code Settings Range Integer values for Modbus in parentheses RTD 1 volts 3 J JO di KO PE T 2 r E 3 n N 4 C C 5 F Fahrenheit 0 C Celsius 1 Maa VI 0 1 0 1 2 3 ng no 0 YES yes 1 2 a 0 to 999 0 to 999 0 to 999 0 to 999 0 to 999 0 to 999 0 to 999 0 to 999 thermocouple 0 milliam ps 2 D 6 I PTII 7 R 8 S 9 B 10 Default 0 0 0 B0 B0 0 500 500 500 500 Modbus Jess 40 001 offset Read Write 70 R W 71 R W 40 R W 41 RW 42 R W 91 R W 92 R W 93 R W 94 R W 95 R W Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus Appears if Always active issettol tc set to is or is set to or red is set to or Always active is set to YES is set to YE5 is set to YE5 is set to YES Low register num
74. eters and all cool outputs use the same set of cool output parameters Each alarm output has its own set of configuration parameters and set points allowing independent opera tion Auto closed loop and Manual open loop Control The controller has two basic modes of operation auto mode and manual mode Auto mode allows the con troller to decide whether to perform closed loop control or to follow the settings of the Input Error Failure Mode parameter Setup Page The manual mode only allows open loop control The Series SD controller is normally used in the auto mode The manual mode is usually only used for specialty applications or for troubleshooting Manual mode is open loop control that allows the user to directly set the power level to the controller s output load No adjustments of the output power level occur based on temperature or set point in this mode In auto mode the controller monitors the input to determine if closed loop control is possible The con troller checks to make certain a functioning sensor is providing a valid input signal If a valid input signal is present the controller will perform closed loop control Closed loop control uses a process sensor to determine the difference between the process value and the set point Then the controller applies power to a control out put load to reduce that difference If a valid input signal is not present the controller will indicate an input erro
75. ey to exit the Factory Page Operations Page Watlow s patented user defined menu system im proves operational efficiency The user defined Opera tions Page provides you with a shortcut to monitor or change the parameter values that you use most often You can go directly to the Operations Page from the Home Page by pressing and holding the Infinity Key You can create your own Operations Page with as many as 20 of the active parameters from the list in the Keys and Displays chapter When a parameter normally located on the Setup Page is placed on the Operations Page it is accessible through both If you change a pa rameter on the Operations Page it is automatically changed in its original page If you change a parameter in its original page it is automatically changed on the Operations Page The default parameters will automatically appear on the Operations Page To change the list of parameters appearing on the Operations Page hold down the Infinity key then press the Advance Key and hold both down for about six seconds until appears in the display This is the Programming Page Press the Down Key Q once to go to the first Pro gramming Page selection The parameter choices PI P20 appear in the display Press and hold the dap Key and use the Up O or the Down Q Key to change the se lected parameter for each Programming Page location If you do not want a parameter to appear for that loca tion select Ino
76. fault Integer values for Modbus in parentheses closed on alarm AL C open on alarm non latching off latching on off no silencing on silencing OFF off no message On on message 50 50 0 1 60 60 1 US 0 0 SI 1 non latching 0 off 0 latching 1 on off 0 096 power bPL 5 bumpless 1 current power level manual 2 fixed power level 1 100 0 to 100 0 10000 to 10000 0 0 set point normally appears press Gap Key to view process value 0 process normally ap pears press GA Key to view set point value 1 timer normally ap pears press D key to view process value 2 process normally ap pears press Ga key to view timer value 3 set point normally appears press G49 Key to view timer value 4 press Gap key to toggle between process and timer values 5 1 Modbus less 40 001 offset Read Write Appears if 276 R W 45 R W 90 R W 252 R W 253 R W 44 R W Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus is set to DEAL or Pr AL is set to SEA or Pr AL is set to DEAL or Pr AL is set to JEAL or P AL Mer I or ere is set to Ur Eb Always active Always active Always active FA IL is set to FTAA Always active Low register numbers contain the two higher bytes high regis
77. h ALhi Set the high alarm set point Alarm 1 Low A1 Lo Set the low alarm set point Alarm 2 High A2 hi Set the high alarm set point Alarm 2 Low A2 Lo Set the low alarm set point Countdown Time Hours hour Displays the number of hours remaining for the countdown time Countdown Time Minutes Min Set the number of minutes remaining for the countdown time Settings Range Integer values for Modbus in parentheses Default Modbus less 40 001 offset Read Write Appears if Deviation 0 to 9999 0000 to 9999000 Process range of sensor if is set to or 1999 to 9999 if SEN is set tol FA or uol tl 1999000 to 9999000 Deviation 1999 to 0 1999000 to 0000 Process range of sensor if is set to or 1999 to 9999 iff SEN is set tol FA orl uol tl 1999000 to 9999000 Deviation 0 to 9999 Process range of sensor if is set to or 1999 to 9999 if SEN is set tol FUA or uol E Deviation 1999 to 0 Process range of sensor if is set to or 1999 to 9999 if SENl is set tol FUA or uol tl 0 to 99 hours 0 to 99000 0 to 59 minutes 0 to 59000 999 dev 1500 pro 999 dev 32 pro 999 dev 1500 pro 999 dev 32 pro 100 101 R W dev 104 105 R W pro 98 99 R W dev 102 103 R W pro 375 R 376 R O Nisset to IDEAL or Pr AL
78. h a process input you must choose a value to represent the low and high ends of the current or volt age range Choosing these values allows the controller s display to be scaled into the actual working units of measurement For example the analog input from a hu midity transmitter could represent 0 to 100 percent rel ative humidity as a process signal of 4 to 20 mA Low scale would be set to 0 to represent 4 mA and high scale set to 100 to represent 20 mA The indication on the dis play would then represent percent humidity and range from 0 to 100 percent with an input of 4 to 20 mA Select the high and low values with Units Scale Low and Units Scale High Setup Page Control Methods Output Configuration Each controller output can be configured as a heat output a cool output an alarm output or deactivated No dependency limitations have been placed on the available combinations The outputs can be configured in any combination For instance all three could be set to cool Analog outputs can be scaled for any desired current range between 0 and 20 mA or voltage range between 0 to 10V The ranges can be reversed to high to low for re verse acting devices Heat and cool outputs use the set point and Opera tions parameters to determine the output value All heat and cool outputs use the same set point value Heat and cool each have their own set of control param eters All heat outputs use the same set of heat control param
79. hat your selections are consistent with your application inputs outputs alarms limits etc If the problem persists you can get technical assistance from your local Watlow representative see back cover by e mailing your questions to wintechsupport wat low com or by dialing 1 507 494 5656 between 7 a m and 5 p m Central Standard Time CST Ask for for an Applications Engineer Please have the following information available when calling e Complete model number e All configuration information e User s Manual e Factory Page Warranty The Series SD31 is manufactured by ISO 9001 registered processes and is backed by a three year warranty Return Material Authorization RMA 1 Call Watlow Customer Service 507 454 5300 for a Return Material Authorization RMA number before returning any item for repair If you do not know why the product failed contact an Application Engineer or Product Manager All RMA s require e Ship to address o Bill to address e Contact name e Phone number e Method of return shipment o Your P O number e Detailed description of the problem Any special instructions e Name and phone number of person returning the product 2 Prior approval and an RMA number from the Customer Service Department is needed when returning any unused product for credit Make sure the RMA number is on the outside of the carton and on all paperwork returned Ship on a Freight Prepaid basis 3 After we receive y
80. he specified output at all times including in on off control manual mode and during autotuning Watlow Series SD31 54 Chapter 10 Features gt Power Limit 100 Power Scale Low 0 N Power Scale High 100 100 Power Limit 100 Power Scale Low 15 Power Scale High 80 e ee eee ee ee Ke He HY CO O Power Limit 70 Power Scale Low 0 Power Scale High 10096 O ETTE ETTE TEE ea EEE TEE TEE YET N O O Power Limit 7096 Power Scale Low 15 A Power Scale High 8096 NG e COO ee e e g Percent Power Output B Oi O O io O a Coreen Time 3 The Power Limit land 2 and and Output Power Scale Low 1 and 2 PSL and P5 2 and Output Power Scale High 1 and 2 and appear on the Setup Page The calculated PID heat and cool power values can be viewed with Power Heat and Power Cool parameters on the Operations Page Nonlinear output curve A nonlinear output curve may improve performance when the response of the output device is nonlinear If Output Nonlinear Function is set to curve l ry Jor curve 2 r ue a PID calculation yields a lower actual output level than the linear output provides These out put curves are used in plastics extruder applications Curve 1 is for air cooled extruders and curve 2 is for wa ter cooled extruders Change the linearity for each output with Output Nonlinear Function 1 or 2 Or Jon the Setup Page Actual Output Pow
81. hese should always be set at 8 data bits no parity and 1 stop bit This is often written as N1 Some soft ware packages may give the option to control the activi ty of the RTS CTS and DTR lines which are sometimes used by EIA 232 to EIA 485 converters On packages where the Modbus registers for the controller need to be defined these values can be entered at this time Be sure to account for offsets 6 Test the communications Once communications is configured test the link to the controller for verification that everything is wired and configured properly Check the wiring and configu rations if things aren t working One misplaced wire or one incorrect setting will keep communications from working When using an EJA 232 to EIA 485 converter be sure to follow the configuration instructions provided with the converter as some may require special jumper switch settings external power supply require ments or special signals from the software Some soft ware packages have built in routines for testing the communications or use Comm6 to help diagnose prob lems 7 Start communications with the controller With the communications successfully verified the software is now ready for use with the controller The above guidelines are the general steps to establishing communications with controllers using Modbus Some applications may require other steps not mentioned but would follow the same general process 8 Programm
82. ich helps reduce electrical noise RFI Variable time base should be used with solid state power controllers such as a solid state relay SSR or sili con controlled rectifier SCR power controller Do not use a variable time base output for controlling electromechani cal relays mercury displacement relays inductive loads or heaters with unusual resistance characteristics PEA GATA MANIN KAO paman compet INN INT l T MEN M m DD Ta JUN AMININ Ghapter 10 Features AG penan Co KA i Hill th Sener Nil lll YIKTI The combination of variable time base output and a solid state relay can inexpensively approach the effect of analog phase angle fired control You must select the AC power line frequency ACLF 50 or 60 Hz Ramping Ramping protects materials and systems that cannot tolerate rapid temperature changes The value of the ramp rate is the maximum degrees per minute or hour that the system temperature can change Select Ramping Mode Setup Page OFF ramping not active St ramp at startup On ramp at startup or when the set point changes Select whether the rate is in degrees per minute or degrees per hour with Ramp Scale Setup Page Set the ramping rate with Ramp Rate Setup Page Set Point Temperature Temperature reaches Set Point quickly Time Set Point Temperature per minute Temperature ramps to Set Point at a set
83. ing and configuring the controllers When programming and configuring the controllers with a software program a couple of things must be kept in mind If the software allows changing Setup pa rameters such as Input Type other parameter values that are dependent on that setting may be automatical ly changed Some software packages may warn you of this possibility and others may not Also some controllers require that any changes made by the software program to controller parameters that need to be retained in the controller memory must be saved in the non volatile memory writes register Any settings not saved to controller memory will be lost when the controller s power is turned off Writing to Non Volatile Memory The Series SD31 stores parameter values in non volatile EEPROM memory This type of memory has a finite life of approximately 100 000 write cycles In some applications you might need to constantly write new values to a particular register Examples might be the writing of ramping set points or repetitive loops through serial communications Continuous writes may result in premature controller failure and system downtime To prevent premature failure of the EEPROM when frequently writing register values write a 0 to register 17 Any values written after that will not be stored to EEPROM However this data is lost when power is re moved Register 17 defaults to a value of 1 after each power cycle writing values
84. ions Parameters Table 29 Operator Interface 14 63 Ordering Information 65 Output 1 Switched DC wiring 9 Output 1 Calibrate 1 0 Volt 45 Output 1 Calibrate 16 0 mA 45 Output 1 Calibrate 4 0 mA 45 Output 1 Calibrate 9 0 Volt 45 Output 1 Function 23 Output 1 Mechanical Relay wiring 8 Output 1 Process Value 43 Output 1 Process wiring 9 Output 1 Solid state Relay wiring 8 Output 1 Type 43 Output 2 EIA TIA 485 wiring 10 Output 2 Function 25 38 Output 2 Mechanical Relay wiring 9 Output 2 Solid state Relay wiring 10 Output 2 Switched DC Wiring 10 Output 2 Type 44 Appendix Output Configuration 52 Output Nonlinear Function 1 24 55 Output Nonlinear Function 2 26 55 Output Power Scale High 1 24 54 Output Power Scale High 2 26 54 Output Power Scale Low 1 24 54 Output Power Scale Low 2 26 54 Output Timer Function 1 25 Output Timer Function 2 26 Output Types 63 Overview 2 Paktron 8 9 10 PI Control 53 PID Control 54 Power Cool 29 55 Power Limit 1 24 Power Limit 2 25 Power limiting 54 Power scaling 54 Power specifications 64 Power Type 44 Power Up Method 37 Power Wiring 6 Preset Set Point 38 Process Alarms 56 Process Decimal Places 21 Process Input 0 to 20 mA wiring 8 Process Input 0 to 10V wiring 7 Process Output Calibration 47 Process Scale High 22 51 Process Scale Low 22 51 Process Value 14 19 Programming Page Overview 18 Prompt Index 68 Proportional Band Cool 30 5
85. is 1999 to 9999 NA degrees or units 1999000 to 9999000 Set Point Low Limit 75 to Set Point High Limit Stop controlling to SP 4200000001 1999 to 9999 degrees or units 1999000 to 9999000 NA 100 0 to 0 0 if any output 0 0 is set to cool 0 0 to 100 0 if any output is set to heat 10000 to 0000 0000 to 10000 Two decimal places implied for Modbus 1999 to 9999 1999000 to 9999000 NA 1999 to 9999 degrees or units 1999000 to 9999000 NA 0 to 99 0 hours 0 to 99000 0 to 59 0 minutes O to 59000 0 to 59 0 seconds O to 59000 Default Modbus less 40 001 offset Read Write 20 21 R 27 28 22 23 R 26 R W 254 255 R 20 21 R 375 R 376 R 377R Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus Appears if There is no input error and is set to UFFjor Cont Control mode is and there isno input error There is no input error and is set to d 9P or both Control mode is M18 An If there is no input error and is set to Or Cont Controller is ramping If there is no input er ror ramping set point is active and is set to Pro Timer model only SD31 XXXX XTXX Gt Nor Ge elis set tole PA Timer model only SD31 XXXX XTXX Ot Hor Gt eis set tolk PI Timer model only SD31 XXXX XTXX Ot Nor Gt elis set tolk PI
86. l process value 1s the secondary display Actual process value is the pri mary display The countdown time is the secondary display Set point is the primary display The countdown time is the second ary display Toggles between actual process value and countdown time with a press of the Gap key There is no secondary value 40 Chapter 8 Timer Closed Loop Timer Set Point Sets the set point that will be used during the timer seguence when Ct SPI the controller is in the automatic control mode and the Timer Set Point is set to Preset Set point Pr E5 Open Loop Timer Set Point Sets the manual power level that will be used during the timer se Ot SP quence when the controller is in l the manual mode and the Timer Set Point is set to Preset Set point Pr ES Set point Pr 5 If 1S not set to Pr E5 then this set point is always used for closed loop control in the automatic mode Open Loop Control Set Point Sets the manual power level that will be used outside of the timer sequence when the controller is in the manual control mode and is set to Pr ES If 5P is not set to Pe E5 then this set point is always used for manual power level in the manual mode OC SP Closed Loop Control Set Point Sets the set point that will be used outside of the timer sequence CC SP when the controller is in the auto matic control mode and the Timer Set Point is set to Preset Watlow Series SD
87. laysia Telephone 60 4 641 5977 Fax 60 4 641 5979 Watlow Singapore Pte Ltd Ayer Rajah Crescent 03 23 Ayer Rajah Industrial Estate Singapore 139949 Telephone 65 773 9488 Fax 65 778 0323 Watlow Electric Taiwan 10F 1 No 189 Chi Shen 2nd Road Kaohsiung Taiwan Telephone 886 7 288 5168 Fax 886 7 288 5568
88. libration 1 2 5 Connect the correct power supply to terminals 1 and 2 see Chapter Two Connect the current source to terminals 11 and 8 Enter 4 00 mA from the current source to the con troller Allow at least 10 seconds to stabilize Press the Down Key Q until the Input Calibrate 4 mA parameter appears Press and hold the Gap Key and change to by press ing the Down Key O Release the dap Key and press the Down Key to store the 4 mA input and move to the next parameter Enter 16 00 mA from the current source to the con troller Allow at least 10 seconds to stabilize At the Input Calibrate 16 mA parameter press and hold the G49 Key and change to by pressing the Down Key Release the Ga Key and press the Down Key to store the 16 mA input and move to the next parameter or press the Infinity Key to exit the Factory Page Rewire for operation and verify calibration Process Output Procedures Equipment Precision volt ammeter with 3 5 digit resolution Output 1 Setup and Calibration 1 Connect the correct power supply to terminals 1 and 2 see Chapter Two Volts 2 3 Connect the volt ammeter to terminals 7 and 6 Press the Down Key Q until the Output 1 Cali brate 1 V parameter appears Press and hold the Gap Key and change to by pressing the Down Key O Release the E Key The voltage output value appears in the display Press the Up or Down Key to adjust the di
89. ly shifts to the idle set point Off Watlow Series SD31 42 Chapter 8 Timer 9 Factory Page and Calibration To go to the Factory Page press both the Down Q and Up keys for six seconds from the Home Page will appear in the display after three seconds Continue to hold both keys until appears in the display e Press the Down or Up keys to move through the Factory Page parameters e To view or change a parameter value press and hold the dap Key e Press the Down or Up O keys to change the parameter value e Press the Infinity Key at any time to return to the Home Page Display Parameter Name Settings Range Default Modbus Appears if Description Integer values for Modbus Na in parentheses Read Write Afb Ambient Temperature 50 0 to 300 0 F NA 277R Always active AMb Displays the current calculated ambient 50000 300000 278R temperature Minimum Recorded Ambient 50 0 to 300 0 F NA NA Always active A Mn Temperature 50000 300000 Displays the minimum recorded ambient temperature ALNA Maximum Recorded Ambient 50 0 to 300 0 F NA NA Always active A MA Temperature 50000 300000 Displays the maximum recorded ambient temperature Display Intensity 15 to 100 duty 100 NA Always active dSPL Increase or decrease the brightness of the upper and lower display A06 N Output 1 Process Value 00 00
90. n To change the other 19 selections release the dap Key and use the Up O or the Down O Key to select tol PO Changes made to the Operations Page will persist until changed by the operator or defaulted by full de faults or user defaults User defined parameters are not over written by default parameters if those features be come enabled Only parameters supported by a con troller s particular hardware configuration and pro gramming settings will appear Autotuning The autotuning feature allows the controller to measure the system response to determine effective set tings for PID control When autotuning is initiated the controller reverts to on off control The temperature must cross the Autotune Set Point four times to com plete the autotuning process Once complete the con troller controls at the normal set point using the new parameters To initiate an autotune set Autotune Oper ations parameters tof Qal Process Set Point Autotune begins Autotune complete N Autotune Set Point 90 percent of Process Set Point Temperature Time Watlow Series SD31 Chapter 10 Features Manual Tuning n some applications the autotune process may not come up with PID parameters that provide the process characteristics you desire If the autotune does not pro vide satisfactory results you will have to perform a manual tune on the process 1 Apply power to the Series SD31 and establish a
91. nation 11 Calibration 43 Calibratlon Offset 29 50 Checksum error 62 Closed Loop 52 Closed Loop Control Set Point 19 Closed Loop Timer Set Point 33 41 CMC Converter 11 Communications features 58 Communications specifications 64 Connectors 4 Control Method 1 24 Control Method 2 25 Watlow Series SD31 Control Methods features 52 Cool Control Method 30 Cool Hysteresis 31 Countdown Time Hours 23 Countdown Time Minutes 23 Countdown Time Seconds 23 Current Process Input Calibration 47 Current Ramp Set Point 19 Cycle Time see fixed time base Dead Band 54 Dead Band Cool 31 Dead Band Heat 30 Default Parameters 43 Delay Off 25 26 39 Delay On 25 26 39 Derivative Cool 31 Derivative Heat 30 Derivative Term 31 Deviation Alarms 56 Dimensions 4 Dimensions specifications 64 Display Default 27 Display Intensity 43 EIA 232 to 485 Converter 11 EIA TIA 485 Communications 56 64 EIA TIA 485 wiring 10 EM Gateway 12 Error condition 15 Error Messages 62 Ethernet Gateway 12 Factory Page 42 Factory Page Overview 18 Features and Benefits 2 Filter Time Constant 51 Filter Value 22 51 Filtered Process Value 19 Fixed Time Base 1 Cycle Time 24 Fixed Time Base 2 Cycle Time 25 Functionality Matrix 64 Greenlee 4 Heat Control Method 29 53 Heat Hysteresis 30 High Range and Low Range 52 High Scale and Low Scale 51 Home Page 15 19 Home Page Overview 15 Hours 19 23 32 37 Immediate Method 37 Independent
92. nge to by pressing the Down Key Release the dap Key and press the Down Key to store 38092 input and move to the next parameter or press the Infinity Key to exit the Factory Page Rewire for operation and verify calibration Voltage Process Input Procedure Equipment Precision voltage source 0 to 10V minimum range with 0 001 V resolution Input Setup and Calibration L Connect the correct power supply to terminals 1 and 2 see Chapter Two Input 2 46 Connect the voltage source to terminals 11 and 9 of the controller Enter 1 00V from the voltage source to the con troller Allow at least 10 seconds to stabilize Press the Down Key Q until the Input Calibrate 1V pa rameter appears Press and hold the dap Key and change to by pressing the Down Key Release the dap Key and press the Down Key Q to store 1 00V input and move to the next parameter Enter 9 00V from the voltage source to the con troller Allow at least 10 seconds to stabilize At the Input Calibrate 9V parameter press and hold the dap Key and change to by pressing the Down Key Release the G4 Key and press the Down Q to store 9 00V input and move to the next parameter or press the Infinity Key to exit the Factory Page Rewire for operation and verify calibration Chapter 9 Factory Current Process Input Procedure Eguipment Precision current source 0 to 20 mA range with 0 01 mA resolution Input Setup and Ca
93. ntain the two higher bytes high register numbers contain the two lower bytes of the four byte integer Decimal precision is implied at three decimal places unless otherwise noted Caution Writing to registers continuously such as ramping set points via comms will damage the SD31 EEPROM memory See page 59 Watlow Series SD31 26 Chapter 5 Setup Parameter Name Description of LO n Ay Lgc2 Se DD EF Rk rc N Ny aa Dw RA gt gt D ZA pi yim cz G5 IR hs a p jm gt m ce Sr I D 3 Alarm 2 Logic Select the alarm output condition in the alarm state Alarm 2 Latching Turn alarm latching on or off Alarm 2 Silencing Turn alarm silencing on or off Alarm 2 Message Displays an alarm message when an alarm is active AC Line Frequency Set the frequency of the applied AC line power source Units of Measurement Set the type of units used for the PID con trol parameters Input Error Latching Turn input error latching on or off Input Error Failure Mode Set the input error failure mode when an error is detected and the control changes to manual mode Input Error Power Set the manual power level when an in put error causes a change to manual mode Display Default Select which display appears normally and which display requires pressing the Gap Key to access Settings Range De
94. olt source and connect the ref erence compensator or thermocouple calibrator to terminals 11 and 10 With type J thermocou ple wire if using a compensator turn it on and short the input wires When using a type J calibra tor set it to simulate 0 C 32 F Allow 10 seconds for the controller to stabilize Press the Down Key Q until the Thermocouple Calibration 32 parame ter appears Press and hold the dap Key and change to by pressing the Down Key Q Release the dap Key and press the Down Key to store the 32 input and move to the next parameter or press the Infinity Key to exit the Factory Page 6 Rewire for operation and verify calibration Watlow Series SD31 RTD Input Procedure Equipment 1 KQ decade box with 0 01 resolution Input Setup and Calibration 1 2 5 Connect the correct power supply to terminals 1 and 2 see Chapter 2 Connect the decade box to terminals 10 S1 11 S3 and 8 S2 with 20 to 24 gauge wire Enter 15 009 from the decade box Allow at least 10 seconds to stabilize Press the Down Key Q until the RTD Calibration 152 parameter ap pears Press and hold the Gap Key and change to by pressing the Down Key Q Re lease the G39 Key and press the Down Key Q to store 150 input and move to the next parameter Enter 380 009 from the decade box Allow at least 10 seconds to stabilize At the RTD Calibration 3809 parameter press and hold the Gap Key and cha
95. on Nga Low latching alarm would turn off Set Point automatically Time Watlow Series SD31 Alarm Silencing Alarm silencing has two uses 1 It is often used to allow a system to warm up after it has been started up With alarm silencing on an alarm is not triggered when the process tempera ture 1s initially lower than the alarm low set point The process temperature has to enter the normal operating range beyond the hysteresis zone to acti vate the alarm function 2 Alarm silencing also allows the operator to disable the alarm output while the controller is in an alarm state The process temperature has to enter the nor mal operating range beyond the hysteresis zone to activate the alarm output function If the Series SD31 has an output that is functioning as a deviation alarm the alarm is blocked when the set point is changed until the process value re enters the normal operating range Turn alarm silencing on or off with Alarm 1 or 2 Si lencing Or Setup Page Alarm High va Set Point Hysteresis Process Temperature Normal Operating Range Temperature Hysteresis NE Low Set Point Startup Alarm disabled Alarm triggered here Time Retransmit The retransmit feature allows a process output to provide an analog signal that represents the set point or actual process value The signal may serve as a remote set point for another controller or as an input fo
96. on troller to a power source and to electrical sensors or peripheral devices Failure to do so may re sult in damage to equipment and property and or injury or loss of life Quencharc Note Switching pilot duty inductive loads relay coils solenoids etc with the mechanical relay or solid state relay output op tions requires use of an R C suppressor Watlow carries the R C sup pressor Quencharc brand name which is a trademark of ITW Paktron Watlow Part No 0804 0147 0000 Spring clamp wiring connector note To insert the wire push the wire into the desired connection num ber and it should automatically lock into place To remove the wire press and hold the orange release tab with a small screw driver Pull the wire out of the connection Solid or tinned wire recommended Watlow Series SD31 Figure 8a 0 to 20 mA Process Input all model numbers e Input impedance 100 dc only e Controller does not supply power for the current loop 8 UUUUUUU Transmitter Two Wire Transmitter Wiring Figure 8b Output 1 Mechanical Relay SD31 JJ e Form A contact e 2 A resistive e 125 VA pilot duty 120 240V ac inductive e See Quencharc note e 240V ac maximum e 30V dc maximum e For use with ac or de e Minimum load current 10 mA Mechanical Relay e Output does not supply power Figure 8c ipi 1 Solid state Relay SD31t K _ e Form A contact e 0 5 A ma
97. on appears with its wiring dia gram Check the label on the controller and compare your model number to those shown here and to the model number breakdown in the Appendix of this manual The connectors on the back of the Series SD31 are different for different model numbers See page 4 Where two different combinations of connectors may appear we show both in the diagrams All outputs are referenced to a de energized state All wiring and fusing must conform to the National Electric Code and to any locally applicable codes as well Figure 6a High Voltage AC Power Wiring SD31 H___ ____ High e Nominal voltage 100 to 240V ac Figure 6b Low Voltage AC Power Wiring SD31 L___ ____ Low e Nominal voltage 24 ac dc e Class 2 power source required for agency compliance Watlow Series SD31 6 Chapter 2 Install and Wire AN Figure 7a Thermocouple Input all model numbers Warning Thermocouples are polarity sensitive The negative lead usually red must be Use National Electric NEC or connected to terminal 11 other country specific standard e Input impedance 520 MQ wiring and safety practices when wiring and connecting this con troller to a power source and to electrical sensors or peripheral devices Failure to do so may re sult in damage to equipment and property and or injury or loss of 7 life Figure 7b RTD Input 100 DIN curve 0 00385 Q Q C
98. ontroller address are Setup Page param eters but would probably be set by the end user Watlow Series SD31 These settings should be recorded for future refer ence The settings can also be stored using the parameter on the Factory Page For saving and restor ing parameters see Chapter Eight Features For de tails on configuring the Setup Page see Chapter Five Setup Page Step 4 Configure the Operations Page The Operations Page contains the parameters that the equipment operator may need to set or change from time to time This includes calibration offset autotune PID parameters and alarm set points In some cases the OEM manufacturer may set most of these parame ters because the equipment operates with little varia tion i e always the same temperature always the same heat load In equipment where demands could vary significantly the OEM may leave parameter ad justments to the end user i e many different tempera ture settings different heat loads The Operations Page on the Series SD31 controller 1s customizable so that only the parameters that the operator may need to use will appear in the display Settings that won t need to be adjusted can be hidden from the operator using the Programming Page For more details on the Programming Page see Chapter Eight Features For details on configuring parameters on the Operations Page see Chapter Six Operations Parameters Tables Once you have verified the
99. oo a Ik aan 12345 maa l Sens oe ee ey Customer Front Al 0 48 mm 0 019 in maximum gap between controller front and customer front panel VY 29 3 mm 1 15 in 59990 YOJDI O MOULD SU JSAOO 8 uo ssaud ysuiey Mou eu Jepun Aly EE o 2 Z c 3 o Figure 4a Dimensions Series SD31 Wiring Connectors Figure 4b SD31 with a Uni maana versal Process Output installed a n for output 1 SD3T F J Screw clamp Spring clamp connnector connnector Figure 4c D31 with other than a Universal Process Output installed for output 1 SD31 C KorJ NOTE The SD31 model number determines which con nector diagram applies to your unit Watlow Series SD31 4 Chapter 2 Install and Wire A Caution Follow the installa tion procedure exactly to guarantee a proper IP65 NE MA 4X seal Make sure the gasket between the panel and the rim of the case is not twisted and is seated properly Failure to do so could result in damage to equipment Watlow Series SD31 Installing the Series SD31 Controller Panel Mounting A Bracket _ Mounting Tab Mounting Ridge Gasket Arrows
100. or an alarm output Some serial com munications parameters on the Setup Page may need to be changed Step 1 Mount and install the controller The Series SD31 controller is designed to be panel mounted in a standard DIN opening It is a 1 32 DIN size controller Cut the correct size hole into the panel and mount the controller using its mounting brackets See Chapter Two for details on installation and mount ing If you retrofit the Series SD31 controller into an ex isting application you may need to use a Watlow adapter plate to adapt it to the smaller controller size Step 2 Wire the controller The controller will need to have its power input and output wiring installed The wiring depends on the spe cific model number of the Series SD31 controller The dimension illustrations in Chapter Two show the loca tion of the model number Use the model number to de termine which wiring diagrams to follow for your con troller See Chapter Two for wiring detalls Step 3 Configure the Setup Page Setup Page parameters tell the controller what in put and output devices are wired to the controller and how the controller should function Without the proper Setup Page settings the controller will not operate or could operate erratically Since these settings require detailed knowledge on the wiring and operation of the equipment the OEM or the designer normally pro grams these parameters Some settings such as the baud rate or c
101. ou can switch between modes if the Auto Manual Mode parameter is selected to appear on the Operations Page To transfer to manual mode from auto mode press the Infinity Key to get to the Operations Page Press the Down Key Q until appears in the display Press and hold the G49 Key to display for auto mode Use the Up or Down keys to select The manual set point value will be recalled from the last manual operation Watlow Series SD31 Je Chapter 10 Features To transfer to auto mode from manual mode press the Infinity Key to get to the Operations Page Press the Down Key Q until appears in the display Press and hold the G49 Key to display for man ual mode Use the Up or Down Q keys to select The automatic set point value will be recalled from the last automatic operation Changes take effect after three seconds or immedi ately upon moving to the next parameter or by pressing the Infinity Key On Off Control On off control switches the output either full on or full off depending on the input set point and hysteresis values The hysteresis value indicates the amount the process value must deviate from the set point to turn on the output Increasing the value decreases the number of times the output will cycle Decreasing hysteresis im proves controllability With hysteresis set to 0 the process value would stay closer to the set point but the output would switch on and off more frequently and
102. our return we will examine it and try to verify the reason for returning it 4 In cases of manufacturing defect we will enter a repair order replacement order or issue credit for material returned In cases of customer mis use we will provide repair costs and request a purchase order to proceed with the repair work 5 To return products that are not defective goods must be be in new condition in the orig inal boxes and they must be returned within 120 days of receipt A 20 percent restocking charge is applied for all returned stock controls and accessories 6 Ifthe unit is unrepairable you will receive a letter of explanation and be given the option to have the unit returned to you at your expense or to have us scrap the unit 7 Watlow reserves the right to charge for no trouble found NTF returns The Series SD31 User s Manual is copyrighted by Watlow Winona Inc December 2004 with all rights reserved Table of Contents Chapter 1 Overview 2 Chapter2 installandWire 4 Chapter 3 Keys andDisplays 14 Home Page Overview 15 Adjusting the control set point 15 Operations Page Overview 16 Setup Page Overview 17 Programming Page Overview 18 Factory Page Overview 18 Chapter 4 Home Page 19 Chapter 5 Setup Page
103. oven manufacturer wants users of their ovens to have easy access to the Series SD PID parameters They also want to limit access to other parameters they do not want users to change This can be achieved by customizing the Operations Page The Programming Page configuration determines which parameters appear on the Operations Page The static set point version SD C has 20 Programming Page locations P1 to P20 The profil ing version SD_R ___ ____ has 23 Programming Page locations P1 to P23 The oven manufacturer wants only these parameters to appear on the Operations Page e Heat Output Power e Fahrenheit Celsius e Autotune e Modbus Device Address To go to the Programming Page press the a key and Infinity keys for six seconds from the Home Page will appear in the display Press the Up O or Down Q keys to move through the parameter prompts P1 P20 To change a parameter value press and hold the 349 key and press the Up O or Down keys to change the value Release the G39 key and press the Up O or Down keys to move through the parameter prompts P1 P20 Press the Infinity Key at any time to return to the Home Page On the Programming Page select the following settings thru P22 To access the Operation Page parameters press the Infinity key to return to the Home Page Press the Gap key to see the Operation Page parameters Only the parameters selected on the Programming Page appear on the Operations Page
104. pter for additional displays available with the timer option Watlow Series SD31 Adjusting the control set point The controller must be in automatic mode Adjust the control set point on the Home Page It is not necessary to enter any other page With on Setup Page the process temperature appears in the display Press and hold the G39 Key to display the control set point To adjust the set point 1 Ensure the controller is in the automatic mode and that you are on the Home Page If you are on any other page press the Infinity Key 2 The process temperature is displayed in the display window Press and hold the G49 Key and use the Up Key O to increase the set point or press the Down Key Q to decrease the set point value 3 The controller will automatically begin using the new set point after three seconds or press the Infini ty Key to immediately use the new value With on Setup Page the control set point appears in the display if the controller is in the au tomatic mode To adjust the set point 1 Ensure the controller is in the automatic mode and that you are on the Home Page If you are on any other page press the Infinity Key 2 The temperature set point is displayed in the dis play window Press the Up Key O to increase the temperature Press the Down Key Q to decrease the temperature 3 The controller will automatically begin using the new set point after three seconds or p
105. r a chart recorder to document system performance over time Any process output can be configured as a retransmit output Chapter 10 Features Communications Overview A Series SD31 controller can also be programmed and monitored by connecting it with a personal comput er or programmable logic controller PLC via serial communications To do this it must be equipped with an EIA TIA 485 SD U_ ___ communications option for Output 2 Your PC or PLC must have avall able an EIA TIA 485 interface or use an EIA TIA 232 to EIA TIA 485 converter See Selecting an EIA TIA 232 to EIA TIA 485 converter in Chapter 2 The EIA TIA 485 option directly supports communication with up to 32 devices on a network or up to 247 devices using a 485 repeater Basic communications settings must first be config ured on the controller on the Setup Page Match the Baud Rate to that of the computer and select a unique Address for each Series SD31 To view or change controller settings with a personal computer you need to run software that uses the Mod bus RTU protocol to read or write to registers in the controller See the parameter tables for information about the Modbus registers These registers contain the parameter values that determine how the controller will function and current input and output values of the sys tem The address in the tables have been offset by sub tracting 40 001 from each one Two consecutive registers are addresse
106. r message and then use the Input Error Failure Mode setting to de termine operation You can choose to have the controller perform a bumpless transfer switch power to output a preset manual level or turn the output power off Bumpless transfer will allow the controller to trans fer to the manual mode using the last power value cal culated in the auto mode if the process had stabilized at a 5 percent output power level for two minutes prior to sensor failure and that power level is less than 75 per cent Actual Temperature Set Point SAS Sensor Break Temperature 100 Output Power 40 eR Power 2 minutes Locks in Output 0 Power Time Input Error Latching Setup Page deter mines the controller s response once a valid input signal returns to the controller If latching is on AE then the controller will continue to indicate an input error until the error is cleared To clear a latched alarm press the Infinity Key If latching is off aL At the con troller will automatically clear the input error and re turn to reading the temperature If the controller was in the auto mode when the input error occurred it will re sume closed loop control If the controller was in manual mode when the error occurred the controller will re main in open loop control The Auto Manual Control Indicator Light is on when the controller is in the manual mode and it is off while in the auto mode Y
107. registers continuously such as ramping set points via comms will damage the SD31 EEPROM memory See page 59 Watlow Series SD31 22 Chapter 5 Setup Settings Modbus Display Parameter Name Range Default Appears if Description Integer values for Modbus Nars in parentheses Read Write Timer Enable no 0 0 391 R W Timer model only ti En Set to enable the countdown timer func yes 1 SD31 XXXX XTXX tion Ge Nor Gk elis set tole Pa Countdown Time Hours 0 99 0 392 R W Timer model only hour Set the number of hours for the count hours SD31 XXXX XTXX down time 0 to 99000 Ge Nor Gk elis set tole PA Pin Countdown Time Minutes 0 59 0 393 R W Timer model only Min Set the number of minutes for the count minutes SD31 XXXX XTXX down time 0 to 59000 Ge Nor Gk elis set tole PA Countdown Time Seconds 0 59 0 394 R W Timer model only SEc Set the number of seconds for the count seconds SD31 XXXX XTXX down time O to 59000 Ge Nor Gk eis set tole PA Timer Start Method d Immediate 0 0 399R W Timer model only ti St Select the method used to start the timer rdY Ready 1 SD31 XXXX XTXX sequence d 4A Ready Acknowledge Gt Nor Ge cis set 2 tole PA Puude Power Up 3 Timer Set Point BFF Off 0 1 401R W Timer mo
108. ress the Down Q or Up keys to change the parame ter value e Press the Infinity Key at any time to return to the Home Page Operations Page With Timer Option Without Timer Option typical de faults gt 4 hour PU in A o LE ry rr WN O e o o 9 r T D c rr MI re Tr rr 3 I D o T m D PE gt O A Mm Pa m A 20 F T Ma I O o Ma re sj M MI re A d M re XD gt DO F o 0 PU pa D M re O Countdown Timer Hours Power Heat Countdown Timer Minutes Auto Manual Countdown Timer Seconds Autotune Ready Band Calibration Offset Closed Loop Timer Set Point Heat Con thod Power Heat Pb h t Proportional Band Heat Autotune Reset Heat Calibration Offset Rate Heat Heat Control Method h h 45 Heat Hysteresis Proportional Band Heat Ci 9 Cool Control Reset Heat Proportional Band Cool Rate Heat Reset Cool Cool Control Method Rate Cool Proportional Band Cool Cool Hysteresis Reset Cool th Alarm 1 High Rate Cool Alarm 1 Low Alarm 1 High 2h Alarm 2 High Alarm 1 Low Adl o Alarm 2 Low Alarm 2 High No selection Alarm 2 Low No selection Note Hardware configuration and programming selections determine what parameters appear on the Opera
109. ress the Infini ty Key to immediately use the new value Note The parameter can lock the ability to adjust the set point f you are unable to adjust the set point check set ting on the Setup Page Note To stop the Series SD31 controller from controlling to a set point press and hold the G Key and press the DOWN Key until the set point value displays QFF A set point value of one less than the SP Low value turns the control outputs off and the controller will no longer attempt to maintain a set point A Caution The controller is in the manual mode when the percent LED is lit If the controller is in the manual mode the manual out put power value is displayed in place of the automatic mode control set point Setting this value can force an output to stay on regardless of the temperature reading Always ensure you are in the automatic mode when adjusting the temperature set point value Chapter 3 Keys and Displays Operations Page Overview The Operations Page contains parameters accessed during normal day to day operation The Series SD31 provides a patented user definable menu system allowing the user to customize the Operations Page contents To go to the Operations Page press and hold the Infinity Key for about three seconds from the Home Page e Press the Down or Up O keys to move through the Operations Page parameters e To view or change a parameter value press and hold the Gap Key e P
110. revision 0 9999 Sbidgl Software Build Number 0 to 9999 Build Number NA 13 R Always active S bLd Displays the software build number 0 9999 Power Type high voltage NA NA Always active PWr Displays the type of input power L OL J low voltage 5n Serial Number 1 0 to 9999 NA 7 8 R Always active Sn Displays the first four characters of the 0 9999 serial number Gn_ Serial Number 2 0 to 9999 NA 7 8R Always active Sn Displays the last four characters of the 0 9999 i serial number Thermocouple 50mV NA Always active tc 50 Calibrate the thermocouple input to YES 50mV see Calibrating the Series SD31 tc 00 Thermocouple 0mV NA Always active tc 00 Calibrate the thermocouple input to OmV YES see Calibrating the Series SD31 tc32 Thermocouple 32 F NA Always active tc 321 Calibrate the thermocouple input to 0 C 32 F see Calibrating the Series SD31 RTD 15 ohm NA Always active 115 Calibrate the RTD input to 15 ohm see Calibrating the Series SD31 RTD 380 ohm NA Always active 1 3801 Calibrate the RTD input to 380 ohms YES see Calibrating the Series SD31 Input Calibrate 1 0 Volt NA Always active Raj Calibrate the process voltage input to 1 0 YES Volt see Calibrating the Series SD31 Input Calibrate 9 0 Volt NA Always active v9 Calibrate the process voltage input to 9 0 YES Volt see Calibrating the Series SD31
111. riggered when the process value reaches the alarm high or alarm low set point Alarm hysteresis defines how far the process must return into the normal operating range before the alarm can be cleared Alarm hysteresis is a zone inside each alarm set point This zone is defined by adding the hysteresis val ue to the alarm low set point or subtracting the hystere sis value from the alarm high set point View or change alarm hysteresis Alarm 1 or 2 Hys teresis H45 for hH45c Setup Page High Side Alarm Range Alarm High Set Point y Alarm Hysteresis Normal Operating Range lemperature 4 Alarm Hysteresis Alarm Low Set Point Low Side Alarm Range Time Alarm Latching A latched alarm will remain active after the alarm condition has passed To clear a latched alarm press the Infinity Key It can only be deactivated by the user An alarm that is not latched self clearing will deacti vate automatically when the alarm condition has passed Turn alarm latching on or off with Alarm 1 or 2 Latching or 4 At Setup Page The alarm state begins when the temperature reaches the Alarm High Set Point Alarm High ve Set Point Y Alarm Hysteresis Normal Operating Range The alarm state continues until the temperature drops to the Alarm High Set Point minus the hysteresis A Temperature Process Temperature latching alarm could be turned off by A the operator at this point A n
112. s play value to match the value from the volt amme ter The unit should stabilize within one second Re peat until the volt ammeter reads 1 00 V 0 1 V Press the Down Key to store the value and move to the next parameter At Output 1 Calibrate 9 V parameter Q 49u press and hold the G49 Key and change to by pressing the Down Key Release the Ga Key The voltage output value appears in the display Press the Up or Down Key to adjust the display value to match the value from the volt ammeter The unit should stabilize within one second Repeat until the volt ammeter reads 9 00 V 0 1 V Press the Down Key Q to store the value and move to the next parameter or press the Infini ty Key to exit the Factory Page 5 Rewire for operation and verify calibration Watlow Series SD31 Milliamperes 6 T Connect the volt ammeter to terminals 7 and 5 Press the Down Key Q until the Output 1 Cali brate 4 mA parameter appears Press and hold the dap Key and change to by pressing the Down Key O Release the E Key The current output value appears in the display Press the Up O or Down Key to adjust the dis play value to match the value from the volt amme ter The unit should stabilize within one second Re peat until the volt ammeter reads 4 00 mA 0 1 mA Press the Down Key to store the value and move to the next parameter At Output 1 Calibrate 16 mA parameter Q 11 6 press and hold the a Key
113. s also linked to the Ready and Ready with Acknowledge timer methods to limit timer countdown to within the ready band Set to to enable the light ing of the Ready Light when the process temperature is within the Ready Band window output s state Set Output 1 or Output 2 to timer to designate an output as a timer output This allows the timer seguence to manipulate the 38 Chapter 8 Timer Timer Output Function EF ti F1 ti F2 Delay Off d1 OF Signal On Sg On Signal Off Sg OF Watlow Series SD31 Each timer output can independ ently have its timer output func tion selected Delay On Delay Off Signal On and Signal Off Output is energized before timer seguence de energized during timer seguence energized after timer sequence Output is de energized before timer sequence energized during timer sequence de energized after timer sequence Output is de energized before timer sequence de energized dur ing timer countdown energized for the signal time de energized after signal time Output is energized before timer sequence energized during timer countdown de energized for the signal time energized after signal time 39 Delay ON Timer Output is ON before timing OFF during timing ON after timing JL F Delay OFF Output is OFF before timing ON during tim ing OFF after timing Signal ON Signal Time Timer HK Output is OFF before
114. s to raise or lower the set point Nal Error condition The indicator light is on If the controller was in Auto mode it will switch to Manual mode when it detects an input error Error message Press dap Key Output power setting Use Up or Down keys to raise or lower the set point Alarm Message X Alle gt 75 Actual temperature Press da Key A ilo gt 80 Set point value Alarm message alternates with set point or process val ue auto mode or power setting manual mode The corresponding output indicator light is on During Ramping The display alternates between the current set point achieved in the ramp the actual process value and the target set point The prompt appears in the display first and then the value for that prompt EP 15 Prochl tebe PEI 180 Current Current Current Current Target Target set point set point process Oo process setpoint set point prompt value prompt Oo value prompt value To change the target set point value press and hold the G Key and adjust the set point value using the UP O or DOWN QKeys Once the current set point reaches the target set point value the ramp is complete and the display stops alternating Appears if J5P Pro f g5P SEE press the Gap Key to view this parameter Appearsif J5P Pro f d9P SEE you do not need to press the G Key to view this parameter Note See Timer cha
115. so sets high and low limits which in turn limit the set point range high and range low values Select the sensor type with Sensor Type Setup Page Access Lockout The user s access to the Operations Page can be con trolled through the parameter The pa rameter appears at the end of the Setup Page It does not affect the Setup Factory or Programming Pages 0 All the Operations Page parameters may be viewed or changed The set point process value auto manual selec tion and alarm settings are the only visible Operations Page parameters Set point is adjustable in this level Auto manual selection and autotune are permitted During manual operation the percent power is ad justable Watlow Series SD31 The set point process value auto manual selec tion and alarm settings are the only visible Operations Page parameters Set point is adjustable in this level Auto manual selection is permitted During manual op eration percent power is adjustable The set point process value and alarm settings are the only visible Operations Page parameters Set point is adjustable Auto manual selection is not per mitted During manual operation percent power is ad justable The set point and process values are the only visible Operations Page parameters set point is not ad justable During manual operation percent power is not adjustable Set Point Low Limit and High Limit The controller constrains the set point
116. ssion for inductive loads Maximum offstate leakage current 100 pA rms Appendix Electromechanical Relay Form A e Minimum load current 10 mA e 2A 240V ac or 30V dc maximum resistive e 125 VA pilot duty 120 240V ac inductive e Must use RC suppression for inductive loads e Electrical life 100 000 cycles at rated current Process e Range selectable 0 to 20 mA 4 to 20 mA 0 to 5V dc 1 to 5V dc O to 10V dc e Reverse or direct acting e 0 to 10V dc voltage output into 1 000 Q minimum load resist ance e 0to 20 mA current output into 800 Q maximum load resistance e Resolution dc ranges 2 5 mV nominal mA ranges 5 pA nominal e Calibration accuracy dc ranges 15 mV mA ranges 30 pA e Temperature stability 100 ppm C Communications ETA TIA 485 e Isolated e Modbus RTU protocol e 9600 19200 and 38400 baud rates e A maximum of 32 units can be connected with additional 485 repeater hardware up to 247 units may be connected e Sampling rate 20 Hz Timer Accuracy e 1 second hour Agency Approvals e UL Listed Process Control UL3121 UL 61010C 1 c UL CE IP65 NEMA 4X File E185611 UL is a registered trademark of the Underwriter s Laborato ries Inc e CSA approved C22 2 24 File 158031 e NSF2 approved for type E J K T and RTD sensors File 49660 0002 000 Watlow Series SD31 64 Terminals e Touch safe e Input power and control outputs 0 2 to 4 mm 2
117. t signal on to provide the completion signal Sf 972 0 Set the signal time minutes to 0 650 0 Set the signal time seconds to 0 d5P Set to toggle between countdown time and process temperature using E key CESP 350 Set the timer sequence set point to 350 CESP Off Set the set point to Off when not timing Operator Control Actions With the oven off the chef starts the preheat cycle by pressing the Down Q key The RDY LED is off Series SD31 begins to control to the 350 F bake set point The chef can press the key to toggle between the process temperature and the timer countdown Viewing the temperature the chef should see it progressing up toward 350 F Toggling over to the countdown time she should see the countdown paused and the colon having a steady indication When the actual oven temperature increases to within the Ready Band at 350 F 10 F the RDY LED turns on The chef loads the oven and presses the Down key to acknowledge the Ready Band starting the bake cycle Time starts counting down The countdown time displays a flashing colon If the temperature deviates out of the Ready Band less than 340 F or more than 360 F timer countdown will pause but will continue as soon as temperature re enters the Ready Band When time reaches 00 00 Output 2 turns on for 10 seconds sounding the audible indicator The chef can stop the audible indicator by pressing the Up O key The Series SD31 then automatical
118. tate relay option can be used with al ternating current ac voltage only Verify the output wiring Verify that power is applied to the output The output simply acts as a switch Verify the output parameter settings Chapter 10 Features ndicatlon Getting alarm message A ih 1 Ah 1 A iL o Or Alarm is occurring when it should not Alarm output indication is incor rect Alarm is not occurring when it should Output cycles turns on and off too frequently Controller does not control close enough to the set point Controller s process value reading is decreasing but actual process is increasing Parameter s do not appear Cannot access Operation Page Cannot change the set point Watlow Series SD31 Probable Cause s The process value is beyond an alarm set point Alarm settings are incorrect Input may be in an error condition Alarm may be latched Alarm settings are incorrect Alarm may be silenced Alarm settings are incorrect Wrong control mode PID control selected in stead of On Off control The cycle time is not set properly Wrong control mode On Off control selected instead of PID PID is not tuned properly Thermocouple polarity is reversed Analog voltage or analog current input scal ing is reversed or incorrect Parameter is not active Parameter lockout is active Operations Page is not configured properly Parameter lockout is ac
119. ter Location 3 50 AMA Maximum Recorded Ambient Temperature PY Parameter Location 4 51 g5 PU Display Intensity P5 Parameter Location 5 52 AGE Output 1 Process Value P6 Parameter Location 6 53 amp 5St Restore Factory Calibration P 7 Parameter Location 7 54 US rr Restore User Settings P8 Parameter Location 8 55 J5 r 5 Save User Settings P9 Parameter Location 9 56 dF te Default Parameters P 0 Parameter Location 10 57 QEY Output 1 Type P I I Parameter Location 11 58 Ok 4o Output 2 Type P 2 Parameter Location 12 59 5 id Software ID P 13 Parameter Location 13 60 SUE Software Version P 4 Parameter Location 14 61 561 d Software Build Number P S Parameter Location 15 62 PiJ Power Type P 16 Parameter Location 16 63 Sn Serial Number 1 first four digits P 11 Parameter Location 17 64 5n Serial Number 2 last four digits P 8 Parameter Location 18 65 t c 50 Thermocouple 50mV P 9 Parameter Location 19 66 00 Thermocouple OmV if P00 Parameter Location 20 67 6 30 Thermocouple 32 F r 15 RTD 15 ohm r 3800 RTD 380 ohm U Input Calibrate 1 0 Volt u9 Input Calibrate 9 0 Volt A4 Input Calibrate 4 0 mA A 16 Input Calibrate 16 0 mA 0 11o Output 1 Calibrate 1 0 Volt 0 19_ Output 1 Calibrate 9 0 Volt 0 14A Output 1 Calibrate 4 0 mA a 0 116 Output 1 Calibrate 16 0 mA Programming Page parameters P1 through P20 are Modbus r
120. ter numbers contain the two lower bytes of the four byte integer Decimal precision is implied at three decimal places unless otherwise noted Timer model only SD31 XXXX XTXX Caution Writing to registers continuously such as ramping set points via comms will damage the SD31 EEPROM memory See page 59 Watlow Series SD31 21 Chapter 5 Setup Display bAud bAud LOC Parameter Name Description Ramping Mode Select when the control set point ramps to the defined end set point Ramp Scale Select the scale of the ramp rate Ramp Rate Set the rate for the set point ramp Modbus Device Address Set the device address for communica tions Every controller on a network must have a unique address Baud Rate Set the baud rate at which the communi catlons OCCUTS Lockout Set the security level for the user inter face Settings Range Integer values for Modbus in parentheses OFF off 0 only 1 any set point change 2 degrees hour 0 degrees minute 1 0 to 9999 0000 to 9999000 1 to 247 9600 9600 baud 19 200 baud 38 400 baud 0 0 No lockout 1 1 Set Point ce 2 Set Point Auto Manual only k 4 Full lockout See the Features Chapter for details 9f r ramps on start up n ramps at start up or Auto Manual alarms only 3 Set Point only 0 0 100 960
121. tions Page A maximum of 20 pa rameters can be defined on the Operations Page Watlow Series SD31 Chapter 3 Keys and Displays Setup Page Overview The Setup Page contains parameters that define basic controller functions Go to the Setup Page for initial configuration or if your application re quirements change Be sure to program the Setup Page first Always press the Infinity Key to return to the Home Page You must start from the Home Page To go to the Setup Page press both the Up O and Down Q keys for about three seconds e Press the Down Yor Up O keys to move through the Setup Page parameters Output 1 Function Control Method 1 CI rr e To view a parameter value press and hold MI re a the Gap Key FEb Fixed Time Base 1 Pi Power Limit 1 e To change a parameter value press and hold PSU 1 Output Power Scale Low 1 the Key and use the Down or Up O PSh Output Power Scale High 1 3 r TN keys to change the parameter value Output Non linear Function 1 A0 Yy Analog Output 1 Units e Press the Infinity Key at any time to re Dilo Pakana maaga baa TAH O Ih Analog Output 1 Scale Hig ee Page r 1 5o Output 1 Retransmit Source A AI o Output 1 Retransmit Low Scale l r H Output 1 Retransmit High Scale Note Hardware configuration and programming selections deter ICO Output
122. tive 61 Corrective Action Determine when alarms messages will display and the proper response to an alarm message Adjust the alarm settings to be correct for the application See error messages Press the Infinity Key to unlatch an alarm Adjust the alarm settings to be correct for the application See the Features Chapter for information on alarm silencing Adjust the alarm settings to be correct for the application Select On Off control mode HEF or ELF 49 Operations Page and set the desired hystere sis value Adjust the cycle time Select PID control and perform tuning Run autotune or perform manual tuning Check thermocouple connections All thermo couple connections including thermocouple ex tension wire must maintain the correct polari ty for proper operation Check the settings of the analog output scale low and scale high parameter Setup Page See Setup and Operation chapters to deter mine when parameters should appear Set the correct level of lockout for access Set up Page Select the desired parameters for the Program ming Page Set the correct level of lockout for access Set up Page Chapter 10 Features Indication Input error Ambient temperature error Checksum error Watlow Series SD31 Error Messages Probable Cause s The sensor may be improperly wired Sensor wiring may be reversed shorted or open The input may be set to the wrong
123. tly configured for PID or On Off control PID settings include proportional band re set or integral and rate or derivative Standard Series SD31 features include an IP65 NEMA 4X front panel rating CE compliance UL CUL CSA and NSF agency approvals single four digit displays in red or green autotuning for heat and cool outputs ramp to set point to gradually warm up your thermal system and automatic manual capability with bumpless transfer A low voltage model is also avall able Advanced features include Modbus EIA 485 serial communications to interface with PC software applica tions and INFOSENSE technology that provides low cost high accuracy thermal sensing Other operator friendly features include LED indi cators to aid in monitoring and setting up the con troller as well as a calibration offset at the front panel The Watlow Series SD31 automatically stores all infor mation in non volatile memory and provides an addi tional back up for user selected settings For more information on these and all other product features refer to the Features Chapter and the Appen dix Control Input gt Figure 2 Series SD31 inputs and outputs Watlow Series SD31 Features and Benefits INFOSENSE Technology e Improves sensor accuracy by a minimum of 50 User Definable Menu System e Simplifies operator interface User Definable Default Settings e Restores to user defined controller settings Adv
124. to 22 00 units 283 R Process output installed A Ot1 Monitors Process Output 1 value via 0000 to 2200 for Output 1 Modbus Restore Factory Calibration 0 0 208 R W Always active FESt Replaces the user calibration parameters 1 with the factory calibration parameters Restore User Settings no 0 0 209R W Always active Usrr Restores the customer s configured set YES 1 tings Save User Settings nol 0 210RW Always active USr 8 Saves the current customer configured YES 1 settings dFLE Default Parameters 0 0 207 R W Always active AFL4 Reset all parameters to their 1 default values 0 4 Output 1 Type non none 0 0 202R Always active O ty1 Displays the hardware type for Output 1 dE DC open collect 1 r LAY mech relay 2 65 solid state relay 3 Pr oc process 4 Watlow Series SD31 43 Chapter 9 Factory Display Settings Default Parameter Name Range Modbus Appears if Description Integer values for Modbus re in parentheses Read Write 0k42 Output 2 Type nonE none 0 0 203 R Always active O ty2 Displays the hardware type for Output 2 d C DC open collect 1 eLAY mech relay 2 SS r solid state relay 3 COM communications 5 Software ID 0 to 9999 NA 10R Always active S id Displays the software ID number 0 9999 Software Version 0 00 to 99 99 NA 11R Always active S VEr Displays the firmware
125. to EEPROM again You must write a 0 to register 17 upon power up to prevent data from being written to EEPROM Chapter 10 Features Watlow Series SD31 Indication No power Controller appears dead No display indication in either window Set point value not displayed Process value not displayed Cannot establish serial data com munications with the controller Output signal is on when it should not be Output signal is not on when it should be Watlow Series SD31 Troubleshooting Probable Cause s Power to unit may be off Fuse may be blown Breaker may be tripped Safety interlock door switch etc may be acti vated Separate system limit control may be latched Wiring may be open Input power may be incorrect Display Default Setup is not set to GEE Press Gap key to access set point Display Default Setup is not set to Pr oc Press Gap key to access process val ue Address parameter may be incorrectly set Baud rate parameter may be incorrectly set Unit to unit daisy chain may be disconnected Communications wiring may be reversed shorted or open E1A 485 converter box may be incorrectly wired Computer s COM port may be incorrectly set up Communications software setup or address may be incorrect PC software s protocol or parity may be wrong Parity should be 8 n 1 Application software is not working properly May need termination pull up and pull down
126. to a value be tween a low limit and a high limit The high limit can not be set higher than the sensor high limit or lower than the low limit The low limit cannot be set lower than the sensor low limit or higher than the high limit Set the set point range with Set Point Low and Set Point High Setup Page High Limit of selected Sensor Range ay Range High Range between High Limit of Sensor and Range Low Range High Set Point Range must be between Range High and Range Low Temperature Range Low Range Low Range between Low Limit of Sensor and Range High Low Limit of selected Sensor Range gt High Scale and Low Scale When an analog input is selected as process voltage or process current input you must choose the value of voltage or current to be the low and high ends For ex ample when using a 4 to 20 mA input the scale low value would be 4 00 mA and the scale high value would be 20 00 mA Commonly used scale ranges are 0 to 20 mA 4 to 20 mA 0 to 5V 1 to 5V and 0 to 10V The Series SD31 allows you to create a scale range for special applications other than the standard ones listed above Reversing of the scales from high values to low values is permitted for analog input signals that have a reversed action For example 50 psi 4 mA and 10 psi 20 mA Select the high and low values with Process Scale Low and Process Scale High Setup Page Chapter 10 Features High Range and Low Range Wit
127. utes SD31 XXXX XTXX put will go to its signal state after the is set to lk PN countdown completes Signal Time Seconds 2 0 to 59 0 Timer model only S S2 Set the low end of the range within which seconds SD31 XXXX XTXX the output will scale is set to E PN h45 h Alarm 1 Hysteresis 0 0 to 999 0 1 0 106 107 BE _ lis set to dEAL hyS1 Set the hysteresis for an alarm This de 0000 to 999000 R W or Pr AL termines how far into the safe region the input needs to move before the alarm can be cleared 9c Alarm 1 Logic closed on alarm 0 0 164R W YE iis set to dEAL Lgc1 Select the alarm output condition in the open on alarm 1 or Pr AL alarm state LA I Alarm 1 Latching off 0 0 108 R W is set to JEAL LAt1 Turn alarm latching on or off on 1 or Pr AL Alarm 1 Silencing OF F off 0 no silencing 0 109R W BE isset to dEAL SiL1 Turn alarm silencing on or off nlon 1 silencing or PrAL d5P Alarm 1 Message OFF off 0 no message 1 110RW QE isset to gEAL dSP1 Displays an alarm message when an nlon 1 message or Pr Al alarm is active h450 Alarm 2 Hysteresis 0 0 to 999 0 1 0 is set to JEAL hyS2 Set the hysteresis for an alarm This de or Pr AL termines how far into the safe region the input needs to move before the alarm can be cleared Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus Low register numbers co
128. w Limit Min operating range of Min operat 240 241 Always active SP Lo Set the low range for the set point sensor to 0 100 if ingrange J R W ther is set to type Moana 328 to 0 100 if 244 245 is set to 328 R W RTD 1999 to 0 001 if 248 249 is set to 999 R W mA or or and yolt V Set precision with PdEL Process Decimal Places Set Point High Limit to max operating Max operat 242 243 Always active SP hi Set the high range for the set point range of sensor if ing range J R W ther is set to type mocouple GPL o 0 100 to 1472 if 246 247 SEnlis set to 1472 R W RTD SPL o 0 001 to 9999 if 250 251 SEn is set to or 999 R W mA or volt and V Set precision with PdEL Process Decimal Places Ferf Input Filter OFF no filtering 0 0 89 R W Always active Ftr E Select filtering action d 5P filter only the dis play value 1 ig ont filter the control input values 2 bot h 3 filter the display and control input values Filter Value 0 0 to 60 0 seconds 0 0 87 88 is not set to FLtr Set the input filter value 0000 to 60000 R W DEF Note Some values will be rounded off to fit in the four character display Full values can be read with Modbus Low register numbers contain the two higher bytes high register numbers contain the two lower bytes of the four byte integer Decimal precision is implied at three decimal places unless otherwise noted Caution Writing to
129. w or change the parameter value The last parameters on the Factory Page are the input and output calibration parameters You can restore the original factory calibration with Restore Factory Calibration Factory Page Note INFOSENSE should be turned off while verifying calibration of the controller with a calibration source Thermocouple Input Procedure Equipment e Type J reference compensator with reference junc tion at 0 C 32 F or type J thermocouple calibra tor to 0 C 32 F e Precision millivolt source O to 50 mV minimum range 0 002 mV resolution Input Setup and Calibration 1 Connect the correct power supply to terminals 1 and 2 see Chapter Two 2 Connect the millivolt source to terminals 11 and 10 with copper wire 3 Enter 50 00 mV from the millivolt source Allow at least 10 seconds to stabilize Press the Down Key Q until the Thermocouple Calibration 50 mV param eter appears Press and hold the dap Key and change to by pressing the Down Key Q Release the dap Key and press the Down Key to store 50 000 mV input and move to the next parameter 4 Enter 0 000 mV from the millivolt source Allow at least 10 seconds to stabilize At the Thermocouple Calibration 0 mV parameter press and hold the GS Key and change to by pressing the Down Key Release the G4 Key and press the Down Key to store 0 000 mV input and move to the next parameter 5 Disconnect the milliv
130. wise noted Caution Writing to registers continuously such as ramping set points via comms will damage the SD31 EEPROM memory See page 59 Watlow Series SD31 30 Chapter 6 Operations Display ACL rA CL dE CL d ll db CL ChHYS C hyS ProP dE Parameter Name Description Rate Cool Set the PID rate time in minutes for the cool outputs Derivative Cool Set the PID derivative time in minutes for the cool outputs Dead Band Cool An offset of the cooling proportional band from the set point Cool Hysteresis Set the control switching hysteresis for on off control This determines how far into the on region the input needs to move before the output actually turns on Proportional Term View the active proportional term for PID diagnostics Integral Term View the active integral term for PID di agnostics Derivative Term View the active derivative term for PID diagnostics Settings Range Integer values for Modbus in parentheses 0 00 to 9 99 minutes 0000 to 99990 0 00 disabled 0 00 to 9 99 minutes 0000 to 99990 0 00 disabled 0 to 999 0000 to 999000 1 to 999 F if is set tol tcjor rtd 1000 to 999000 0 000 to 999 9 if ER is set tol 9A or uol E 0000 to 999000 0 000 to 1 000 0000 to 1000 0 000 to 1 000 0000 to 1000 0 000 to 1 000 0000 to 1000 Def
131. ximum resistive e 20 VA pilot duty 120 240V ac inductive e See Guencharc note e 24 to 240V ac e Minimum load current 10 mA e Maximum leakage current 100 pA e Not for use with direct current dc e Output does not supply power Solid state Relay Solid state Switch ai vi 8 Chapter 2 Install and Wire A Warning Use National Electric NEC or other country specific standard wiring and safety practices when wiring and connecting this con troller to a power source and to electrical sensors or peripheral devices Failure to do so may re sult in damage to equipment and property and or injury or loss of life Note To prevent ground loops isolation needs to be maintained from input to output when using switched DC or analog process outputs Quencharc Note Switching pilot duty inductive loads relay coils solenoids etc with the mechanical relay or solid state relay output op tions requires use of an R C suppressor Watlow carries the R C sup pressor Quencharc brand name which is a trademark of ITW Paktron Watlow Part No 0804 0147 0000 Spring clamp wiring connector note To insert the wire push the wire into the desired connection num ber and it should automatically lock into place To remove the wire press and hold the orange release tab with a small screw driver Pull the wire out of the connection Solid or tinned wire recommended Watlow Series SD31 Figure 9a

User`s Manual Series SD31 Single Display PID Controller

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