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Watlow Series 935A - Cress Manufacturing

1. 16 Lockout Functions AA 18 Setting Up Inputs and Outputs 20 Remote Set Point sss Front Panel Lockout Alarms Leales Alarms Setting and Clearing 26 Timer LOAN ua iae ae eie tr e ah 28 Timer Setting sss 30 Timer Example esee 31 AULO tUNIING ann no 32 PID Fin tuning tegt irn 33 ECHTEN e WEE 34 Errors and Troubleshooting 36 Mounting iad ee el 38 Dimensions e ccceeeeeeeeeeeeeeeeeeeeeeteeeeeeeeeeeees 39 JC Tino EE A0 Terminal Block Removal AAA 41 UI Le WE 42 Wiring Examples AAA 44 Llegir 46 WAG OX EE 48 Specifications EE 50 Ordering Information sess 51 Declaration of Conformity 52 Software Map essen 55 How to Reach Us ssss back cover Table Numbers eere Page 1 Output Functions esses 3 2 Error Messages and Action 8 3 Software Organization 9 4 Operations Menu Overview 11 5 PID Menu Overview 14 6 Configuration Overview 16 7 Lockout Options eseesesss 19 8 Setting Inputs and Outputs 21 9 Using Front Panel Lock 23 10 Alarm Functions
2. O does not lock out 82131 A WARNING When Output 1 is a Front Panel Lock Nm the output is energized Do not connect a power switching device to Output 1 injury or death or damage to equipment or property could result 18 Watlow Series 935A User s Manual Table 7 Series 935A Lockout Options Three No Lockout Lockout i Options Fully Locked Calta Operator s Perspective Front Panel Lockout Set Point Lockout Security Tag TA Y ET ENUM E View Process Yes Yes Yes Yes Yes Yes Yes View Set Point Yes Yes Yes Yes Yes Yes Yes Change Set Point No Yes No Yes Yes Yes Yes Auto tune No Yes Yes Yes Yes Yes No View Change Operation Menu No Yes Yes Yes Yes No Yes View Change Configuration Menu except tag No Yes Yes Yes No Yes Yes View Change PID No Yes Yes No Yes Yes Yes P PID Menu Note Front Panel Lockout requires an external hardware switch For set up and wiring information see p 23 For more wiring information see p 43 C Configuration Menu except BIXEEJ O Operations Menu except MAZ A Auto tune Watlow Series 935A User s Manual 19 Setting Inputs and Outputs ym Key Input Output Set up Information um e All initial input and output set up occurs in the Configuration Menu d e The 935A requires a thermocouple or RTD input connection to the S1 and S2 Terminals including P when using the remote set point option
3. A Auto tuning occurs at 90 of set point Time in less than or equal to 85 minutes Temperature Manual Tuning For optimum performance tune the Series 935A to your thermal system The settings here are for a broad spectrum of applications your system may have different requirements Tune heating outputs at a set point above ambient temperature Tune cooling outputs at a set point below ambient temp 1 Apply power to the 935A and enter a set point In the Operations Menu must ES Begin with these Configuration Menu settings WEI En 2 Proportional Band Adjustment Gradually increase until the upper display temp stabilizes at a constant value 3 Integral Adjustment Gradually decrease from 30 00 until the display temperature begins to oscillate or hunt Then slowly increase until the upper display stabilizes again near set point 4 Cycle Time Adjustment Set as required Faster cycle times sometimes achieve the best system control However if a mechanical contactor or solenoid is switching power to the load a longer cycle time will minimize wear on relays 5 Derivative Adjustment Increase to 0 10 minute Then raise set point by 20 to 30 F or 11 to 17 C Observe approach to set point If load temperature overshoots increase by 0 50 minute Raise set point by 20 to 30 F or 11 to 17 C and watch approach again Repeat until sys tem rises to new set point appropriately 6 Calibration Offset
4. FRET Display Default Alarm Type Alarm Hysteresis Ci wi Timer Function Stet Start Timer EZE vi Timer Ready Band COE Signal Time Operations Menu Auto tune mum wi Countdown Timer REIS Idle e The timer requires Output 1 to work as either a heat or as a cool output e The 935A timer is a function of Output 2 which depending on your units model number can be ei ther switched dc electromechanical relay or solid state relay e Hours minutes hh mm or minutes seconds mm ss choices reside in Output 2 BEH e Timer set up occurs in two locations in the Configuration Menu and the Operations Menu 39 starts the timer stops the timer EFA choices set up the timer display see p 16 e LED colon flashes when timer runs LED colon ON steadily when timer is not running Configuration Menu set up includes see p 16 Output loi heat A33 or cool f Output 2 BH timing interval hours minutes FS tz or minutes seconds gg e Timer Output 2 function can perform one of four possible actions after timing 1 Turn ON also called delay ON EPPA 2 Turn off also called delay off PPPT 3 Toggle ON also called signal ON tre 4 Toggle off also called signal off REIJA e Start timer function choices 1 Immediately start MJH 2 Start once inside a ready band BPE 3 Start once inside a ready band acknowle
5. Default 25 F or 17 C 3 F or 2 C Hidden if CR 0 or if Gt il c SP ERS IP 3 The front panel is locked out tRg P or if Qt Uandior te HERE LEAS P 3j or if Pb bel Your Settings Prompt Ct h Cycle Time Heat db Dead Band Pb c Proportional Band Cool ih usc Hysteresis Cool Range 04 680 50 600 Select a value between 0 1 and 60 0 seconds Solid State Relay or Switched DC or 5 0 and 60 0 seconds Electromechanical Relay 999 C8 S55 00 9990 00 5550 Select a value in whole degrees 0 F to 999 F or 0 C to 555 C or in tenths of degrees 0 0 F to 999 0 F or 0 0 C to 555 0 C 8 L399 f E5595 00 9990 00 5559 Select a value in whole degrees 0 F to 999 F or 0 C to 555 C or in tenths of degrees 0 0 F to 999 0 F or 0 0 C to 555 0 C 999 CL 555 8109980 a1 559 Select a value in whole degrees 1 F to 999 F or 1 C to 555 C or in tenths of degrees 0 1 F to 999 0 F or 0 1 C to 555 0 C Default 1 0 second O F or 0 C 25 F or 17 C 3 F or 2 C Hidden if ERg P or if Pb h 0 RI or if or if 2 J or if Ot f coot and or Gt e cool or if Pb c 0 Watlow Series 935A User s Manual 57 and and Your Settings
6. Failure Mode IJ Front Panel Lock G Glossary 48 Watlow Series 935A User s Manual 10 32 10 24 10 24 24 26 27 24 24 24 24 24 26 24 36 34 34 13 20 26 27 16 13 13 13 13 13 38 39 44 50 51 16 20 8 37 17 36 20 23 46 H Hours Minutes 16 28 Hysteresis Alarm 17 24 Heat 13 Cool 13 I Idle 10 Idle Set Point Track 10 Input Range Low 20 Input Range High 20 Input Type EST 21 Integral 18 K Keys 5 Latch 17 24 27 Local Remote 10 Lockout Functions 18 Front Panel 18 23 Security Tag 18 Set Point 18 M Minutes Seconds 17 28 Mounting 38 Operations Learning O 10 Ordering Information 51 Output 1 Function 3 20 Output 2 Function 3 20 P PID Menu Learning 12 PID Settings Tweaking 33 Proportional Band Heat 13 Cool HA 13 R Remote Set Point 20 22 Set Point Change 7 Local 10 Lock 18 Range High 20 Range Low 20 Remote Set Point 22 Remote 22 Silencing Alarms 27 Software Maps Easy 9 Advanced 55 62 Specifications 50 T Terminal Block Removal 41 Timer Countdown 10 28 31 Delay off 17 28 Delay on 17 28 Function 17 28 Hours Minutes 17 28 Idle 17 28 Minutes Seconds 17 28 Ready Band 17 28 Signal off SERS 17 28 Signal on EER 17 28 Signal Time 17 28 Start Timer 17 28 Immediate 17 28 Ready Band 17 28 Ready Band Acknowledge 17 28 Tuning Auto tuning 10 32 Manual tuning 32 Troubleshooting 36 W Wiring 42 43 Wiring Examples 44 45 Watlow Ser
7. Start Timer Timer Ready Band Signal Time Set Point Lockout Lockout Tag To Set Up Front Panel Lock 1 Install an external switch 2 Wire the control per the example below and the information on p 42 45 3 Go to AZ then BST and choose Maga Table 9 Using Front Panel Lock View Process Yes View Set Point Yes Change Set Point No Auto tune No Reset Alarm Yes View or Change Operation No Menu Except Config Menu View or Change Configuration No Menu Except Tag View or Change PID Menu No Figure 6 Front Panel Lock Wiring See p 43 for more wiring information Closed switch locked IN OT1 OT2 POWER S2 S1 1213 415 617 J Go oo oo B 60 to 709 0 5w resistor See Caution Output 1 Front Panel Lock Ki WARNING When Output 1 is a Front Panel Lock EZ the output is energized Do not connect a power switching device to Output 1 injury or death or damage to equipment or property could result AN CAUTION Failure to install a 60 to 70Q 0 5 watt resistor across the customer supplied Front Panel Lock switch will cause the panel to lock out even when the switch is open Injury to personnel or damage to equipment or property could result Watlow Series 935A User s Manual Configuration Menu Input Type Celsius Fahrenheit Input Range Low Input Range High Output 1 Function
8. oneee 25 11 More Alarm Functions 27 12 Timer Functions Settings 29 13 Error Codes and Actions 37 14 Troubleshoot Outputs 37 15 Input Range Information 51 Figure Numbers eene Page 1 Input and Output Overview 3 2 Front Panel Functions 5 3 Begin Controlling ess 6 4 Changing the Set Point 7 5 Remote Set Point Wiring 22 6 Front Panel Lock Wiring 23 7 Auto tuning sess 32 8 Calibrating eeeneenees 34 9 Panel Cut out Dimensions 38 10 Knockout Template 38 11 Dimensions eee 39 12 Case Top View and Collar 40 13 NEMA 4X IP65 Seal iiaee 40 14 Terminal Block Removal 41 15 Wiring iie iis 42 16 System Wiring Example 44 17 Ladder Diagram Example 45 Watlow Series 935A User s Manual 1 Introduction Welcome to the Watlow Series 935A General Description The Series 935A is a temperature controller with countdown timer for industrial commercial or scientific applications It offers 1 32 DIN pa
9. A Errors and Troubleshooting Configuration Menu Input Type Celsius Fahrenheit Input Range Low Input Range High Output 1 Function Output 2 Function Display Default Alarm Type Alarm Hysteresis Alarm Latch Alarm Silencing DCD wi Failure Mode Timer Function Start Timer Timer Ready Band Signal Time Set Point Lockout Lockout Tag Set up an input failure operation mode at the 3 397 prompt in the menu choose bumpless transfer AEJ for smooth output action transition to percent power control or select a percent power output value Bumpless Transfer when errors occur the control output will continue at a percent output learned while stable Default Percent Power 100 to 100 depending on heat cool output configuration The control will assume a specific output power when input errors occur All except one of the possible displayed error messages are input related f you see bz cycle power to the controller If the error persists call the factory Be aware of the difference between U S and European thermocouple color colour codes Reversed polarity input leads is one of the most common errors Incorrect software input choice at the Configuration Menu input ERSTES prompt is another common error When calling the factory for help please have 1 The model number of the control 2 A photocopy of pages
10. Prompt Ct c Cycle Time Cool LAE Integral Function L d Derivative Function CAL Calibration Offset Range O14 600 50 628 Select a value between 0 1 and 60 0 seconds Solid State Relay or Switched DC or 5 0 and 60 0 seconds Electromechanical Relay Op Select a value adjustable between 0 0 and 99 99 minutes repeat 000 899 Select a value adjustable between 0 00 and 9 99 minutes 999 9999 Select a value adjustable between 999 and 9999 F or C or 99 9 and 999 9 F or C to eliminate a difference between the displayed temperature and the actual temperature 58 Watlow Series 935A User s Manual Default 5 0 seconds 5 00 minutes repeat 0 minutes 0 F or 0 C Hidden if EAJ P__ or if Pb c 0 or if Pb clis hidden ERS P or if Pb h 0 or if is hidden and ifPb c 0 or if Pb c is hidden LERSg IP 3j or if Pb hj 0 or if Pb h is hidden and ifPb cj 0 or if Pb clis hidden LERS IP jJ Your Settings 2 fa 3 c 2 Lj E E g fe 5 Prompt Ltn Input Type LCE Celsius Fahrenheit L rL Range Low L ch Range High OE I Output 1 Function Range C J Jte H Kt c El Tte C fi Nt c Etc 5 Stc eEd 1 00 RTD rtg 0 1 RTD OF Choose to indicate temperature in Fahrenheit or Celsius
11. and for 3 seconds to exit the menu NOTE Restore Factory Calibration restores factory calibration values to all calibration prompts Calibrating the 935A Calibration requires a precision millivolt source with thermocouple compensation an adjustable 0 10 volt source and a decade resistance box and calibrate the thermocouple span calibrates the ambient compensation e and calibrate the RTD span OV is required when calibrating and for remote set point calibration 5V is required when calibrating and for remote set point calibration When calibrating calibrate all points for consistency in results Allow the unit to warm up for 15 minutes before calibrating Figure 8a Figure 8b Thermocouple Calibration RTD Calibration IN OTi OT2 POWER IN OT1 OT2 POWER ee ee ge aa alg 1 213 415 6 7 8 Li 213 415 617 8 oe oe QU ee ea mV Volt Decade Volt source source Box source C IC tc Sd mV source 50 000mV Volt source 5V Store TC counts at 50 000mV Store 5V remote set point counts for use with TC Decade Box 15 00 ohms Volt source OV Store low end RTD counts Store OV remote set point counts for use with RTD nn Ecug mV source 0 000mV Volt source OV Store TC counts at 0 000mV Store OV remote set point counts for use with TC JOL mV source 380
12. 15 20 31Vx ac dc 50 60Hz 5 Remote Input Option A only Fused internally factory replaceable only time lag type 2A 250V Power consumption 6VA maximum Data retention upon power failure via non volatile memory Switching supply speed 45kHz 5kHz Operating Environment 0 to 65 C 32 to 149 F 0 to 90 RH non condensing Storage Temperature 40 to 85 C 40 to 185 F Terminals Touch safe set screw type accepts 0 5 to 4mm 22 to 12 AWG wire Torque to 0 1 Nm 4 5 in Ibs Controller Weight 113 g 4 0 oz Shipping Weight 207 g 7 3 oz These specifications are subject to change without prior notice ET Ordering a 935A Ordering Information 2192 935 1 0 Single thermocouple or RTD DIN input dual output singlie display temperature control with time function and four digit display Remote Inputs A Remote set point input or front panel lock input in place of output 1 B Separate input for remote timer start or front panel lock Output 1 Remote Input C Switched dc logic signal non isolated Watlow D N a mite power controller compatible Optionally used for remote set point input or front panel lock input for Remote Input A option only Output 2 C Switched dc logic signal non isolated Watlow DIN a mite amp power controller compatible D Electromechanical relay 1 Form A 2A 240V ac without contact suppression
13. Actual Temperature Secondary Time Remaining Timer Function Normal Display Set Point Temperature Secondary Time Remaining Failure Mode Start Timer Timer Ready Band Signal Time Set Point Lockout Lockout Tag 20 Watlow Series 935A User s Manual Note Access to Configuration Menu varies with lockout function See p 19 Table 8 Setting Inputs and Outputs Input Type Choose sensor type la ED n ENS J t c K t C T t c N t c E t c S t c 1 0 RTD 0 1 RTD Input Range Information J t c 32 to 1382 F or 0 to 750 C K t c 328 to 2282 F or 200 to 1250 C T t c 328 to 662 F or 200 to 350 C N tc 32 to 2282 F or 0 to 1250 C S te 32 to 2642 F or 0 to 1450 C E t c 328 to 1470 F or 200 to 799 C 1 RTD DIN 328 to 1292 F or 200 to 700 C 0 1 RTD 99 9 to 999 9 F or 99 9 to 700 0 C Celsius Fahrenheit Choose displayed unit of measure oF C Input Range Low Select lowest displayable Set Point dependent on rz EO Select a value lowest displayable set point between Le Input Type Range Low and Input Range High Input Range High Select highest displayable Set Point dependent on rz rm 0 Select a value highest displayable set point between Li Input Type Range High and Input Range Low Output 1 Function Choose Output 1 type COCL GMH Heat Cool Alarm Remote Front None Set Panel
14. Celsius Fahrenheit 3 p P CERE d e Remote Set Point is a second input wired to OT1 Terminals 3 and 4 m Input Range Low e Indication of C or F units of measure occurs only in the prompt ae wi e Sensor input type minimum and maximum range see p 51 is further defined with Range Low c and Range High to set the working span of set points and remote set point scal Input Range High ing En e Output 1 and Output 2 configure the prime functions of the Series 935A they are the golden Output 1 Function prompts 4 e Output 1 must be heat or cool to use Output 2 as a timer Output 2 Function e Remote Set Point enables Output 1 to act as an input for 0 5 dc from another con FRET 4 troller or a transmitter Display Default e Front Panel Lock requires an external switch and 620 0 5 watt resistor wired in parallel on Output 1 Switch open unlocked closed locked See p 23 Alarm Type e Output 2 sets timer interval in hours minutes HAHA or minutes seconds Jg Alarm Hysteresis e Display Default ZIWI T2 lets you choose the primary last 2 characters and secondary first 2 characters default displays Press G49 to toggle to the secondary display for 15 seconds Alarm Latch mu Normal Display Actual Temperature Secondary None GAJ Normal Display Set Point Temperature Alarm Silencing Secondary Actual Temperature Normal Display Time Remaining Secondary Actual Temperature Normal Display
15. Declaration of Conformity Series 935 CE WATLOW Winona Inc 1241 Bundy Boulevard Winona Minnesota 55987 USA Declares that the following product English Designation Model Numbers Series 935 935 A or B 1C C D or K 0 or 1 Any four letters or numbers Temperature control Installation Category II Pollution degree II 100 to 240 V ac or 24 to 28 V x ac or dc 50 or 60 Hz 6 VA maximum Classification Rated Voltage Rated Frequency Rated Power Consumption Meets the essential requirements of the following European Union Directives by using the relevant standards show below to indicate compliance 89 336 EEC Electromagnetic Compatibility Directive EN 61326 1997 With A1 1998 Electrical equipment for measurement control and laboratory use EMC requirements Industrial Immunity Class A Emissions EN 61000 4 2 1996 With A1 1998 Electrostatic Discharge Immunity EN 61000 4 3 1997 Radiated Field Immunity EN 61000 4 4 1995 Electrical Fast Transient Burst Immunity EN 61000 4 5 1995 With A1 1996 Surge Immunity EN 61000 4 6 1996 Conducted Immunity EN 61000 4 11 1994 Voltage Dips Short Interruptions and Voltage Variations Immunity EN 61000 3 2 1995 With A1 3 1999 Harmonic Current Emissions EN 61000 3 3 1995 With A1 1998 Voltage Fluctuations and Flicker 73 23 EEC Low Voltage Directive EN 61010 1 1993 With A1 1995 Safety Requirements of electrical equipment for measurement
16. 277289933 and in degrees If Proportional Band Cool PA 0 Set Hysteresis Heat GL The Series 935A will provide on off control with the hysteresis value selected and no proportioning action Proportional Bands should be decreased for tighter control but increased to eliminate oscillations Cycle Time Heat is limited to a minimum of 5 0 seconds for the electromechanical relay to help reduce wear The electromechanical relay D Output 2 is not recommended for PID control It is war ranted to 100 000 contact closures only Alarm or on off control are appropriate applications for the Series 935A s electromechanical relay output Set Integral to eliminate droop in the system Lower the value for more droop reduction Adjustable from 0 to 99 9 minutes repeat Set Derivative to prevent overshoot Increasing the value slows the approach to set point Adjustable from 0 to 9 99 minutes Calibration Offset eliminates the difference between the displayed process temperature and the actual process temperature value Watlow Series 935A User s Manual 33 Calibration Menu Hm tc50 ec UG tc00 E73 tc CEE r15 r380 NSNSSNS an rst Quick Calibration Restore Press all three keys simultaneously until appears in the display press once and will appear in the display Press and hold Gap the display will show MEF press to change display to ETS Press and hold
17. 3 1995 avec A1 1998 Fluctuations et vacillements de tension Directive 73 23 CEE sur les basses tensions EN 61010 1 1993 avec A1 1995 Normes de s curit du mat riel lectrique pour la mesure le contr le et l utilisation en laboratoire 1 re partie Conditions g n rales 2193 52 Watlow Series 935A User s Manual Erklart dass das folgende Produkt Deutsch Bezeichnung Serie 935 Modell Nummern 935 A oder B 1C C D oder K 0 oder 1 Beliebige vier Ziffern oder Buchstaben Klassifikation Temperaturregler Installationskategorie II Verschmutzungsgrad II Nennspannung 100 bis 240 V ac oder 24 bis 28 V AC oder DC Nennfrequenz 50 60 Hz Nennstromverbrauch 6 VA max Erf llt die wichtigsten Normen der folgenden Anweisung en der Europ ischen Union unter Verwendung des wichtigsten Abschnitts bzw der wichtigsten Abschnitte die unten zur Befolgung aufgezeigt werden 89 336 EEC Elektromagnetische Kompatibilitatsrichtlinie EN 61326 1997 mit A1 1998 Elektrisches Ger t f r Messung Kontrolle und Laborgebrauch EMV Anforderungen St rfestigkeit Industriebereich Klasse A Emissionen EN 61000 4 2 1996 mit A1 1998 St rfestigkeit gegen elektronische Entladung EN 61000 4 3 1997 St rfestigkeit gegen Strahlungsfelder EN 61000 4 4 1995 St rfestigkeit gegen schnelle St Be Burst EN 61000 4 5 1995 mit A1 1996 St rfestigkeit gegen Uberspannung EN 61000 4 6 1996 Geleitete St
18. Adjustment Enter the offset value you want Calibration offset adds or subtracts degrees from the value of the input signal 32 Watlow Series 935A User s Manual A Fine Tune the PID Settings PID Menu 1 Set up Heat 2 LER v Proportional Band PELIS Hysteresis umm Cycle Time amr wi Dead Band Set up Cool 7 uum v Proportional Band GERA Hysteresis WS v Cycle Time Set up General 11 ar Integral Ea vV Derivative CAL vi Calibration Offset 12 Set and in degrees If Proportional Band Heat 0 Set Hysteresis Heat PEEJA The Series 935A will provide on off control with the hysteresis value selected and no proportioning action Proportional Bands should be decreased for tighter control but increased to eliminate oscillations Cycle Time Heat is limited to a minimum of 5 0 seconds for the electromechanical relay to help reduce wear The electromechanical relay D Output 2 is not recommended for PID control It is war ranted to 100 000 contact closures only Alarm or on off control are appropriate applications for the Series 935A s electromechanical relay output Set Dead Band F733 to adjust the effective cool set point above the primary set point by the dead band value in degrees In cool heat applications dead band prevents continuous cool output action by creating a buffer between heating and cooling output action 6 Set
19. Bumpless transfer provides a smooth transition to percent power control without output state change ELEM US VU Ve Bumpless Percent Power Timer Output Function Choose output function for the end of the timer Delay ON Turn ON Delay Off Turn off Signal ON Toggle ON Signal off Toggle off Dua oO mes sm um Delay Delay Signal Signal on Off On Off Start Timer Function Choose the start timer conditions Immediate start on a 9 press press and Actual temp is inside the Ready Band press plus Actual temp is inside the Ready Band then acknowledge with a C13 press immediate start on power up without waiting for the Ready Band temp or a 9 press Immediate Ready Ready Power Acknowledge Timer Ready Band If E1733 SFE or ELT select ready band high low values mm ey WER NEN Wm EE NES Eu O F to 999 F or 0 C to 555 C or 0 0 F to 999 0 F or 0 0 C to 555 0 C Signal Time If or E3 select a Signal ON or Signal off time duration to trigger an annunciator or other action at completion of countdown time EA M 1 sec to 99 59 min sec Set Point Lock Choose to lock the Primary Set Point from change not view SLCC Lockout Tag Choose undisplayable unchangeable menus all locked PCOA GED GEB CNN 9 m ED EE Oe Choose the menus function that will not be displayed and therefore cannot be changed P PID Menu C Configuration Menu except
20. Output 2 Function Display Default CHEE v Alarm Type GZB vi Alarm Hysteresis Emm Alarm Latch ECEID vi Alarm Silencing Failure Mode Operations Menu Auto tune ENS vi Alarm Range Low WIR Alarm Range High PID Configuration Learning Alarms Alarms signal an excursion from normal operating conditions In general audible alarms or lights connected to alarm outputs will signal a problem In the 935A the front panel LED 1 or 2 indicates an alarm with or flashing on the main display Process alarms use absolute high and low values to trigger an alarm Use this alarm type if your process may be subject to temperatures that it must not exceed Use and to set alarm points at or near these values See Table 10 II next page Deviation alarms are triggered by a deviation from the set point The alarm high value is the deviation above set point and the low value is the deviation below set point Whenever the set point is adjusted the alarm settings are relative to that value Deviation alarms use the cur rently controlling set point whether primary remote idle or 9096 of primary during auto tuning See Table 10 HJE next page Normally Open or EH Alarms energize the alarm output when an alarm condition occurs and de energize it when cleared Use this type to activate external devices such as audible alarms or lights See Table 10 HJE next page
21. Remote Input A option only K Solid state relay 0 5A 24 264V ac without contact suppression 3 Remote Input A option only Power Supply 0 100 to 240V ac nominal high voltage 1 24 to 28V lt ac dc nominal low voltage Remote Input A option only Custom Options 00 None AA No Watlow logo XX Custom label or parameters Display R Red displays G Green displays Table 15 Input Range Information J t c O0 to 750 C or 32 to 1382 F K t c 200 to 1250 C or 328 to 2282 F T tle 200 to 350 C or 328 to 662 F N t c O to 1250 C or 32 to 2282 F S t c O to 1450 C or 32 to 2642 F E t c 200 to 799 C or 328 to 1470 F 1 RTD DIN 200 to 700 C or 328 to 1292 F 0 1 RTD 99 9 to 700 0 C or 99 9 to 999 9 F 1 Electromechanical relays are warranted for 100 000 closures only Solid state switching devices are recommended for applications requiring fast cycle times or extended service life 2 To effect IP65 NEMA 4X rating requires a minimum mounting panel thickness of 1 5mm 0 06 inch and a surface finish not rougher than 0 000812 mm 0 000032 in 3 When using this output to drive a solenoid MDR or electromechanical relay contactor protect output with a Quencharc Order code number 0804 0147 0000 Refer to owner s manual for wiring information Quencharc is a registered trademark of ITW Paktron Watlow Series 935A User s Manual 51
22. Select a value between Input Type Range High and Input Range Low RERE COOL ALP c SP EBL nonE Choose Heat Cool Alarm Remote Set Point Front Panel Lock or No output action Type J range low value Type J range high value heat Default Hidden if ERSg ERSg C ERS E Watlow Series 935A User s Manual 59 Your Settings Prompt Ote Output 2 Function id ISP Display Default ALE Y Alarm Type 2 c o c 2 KZ CH 2 E S ES fe 9 ECO Alarm Hysteresis Range hE At COOL ALPA ERP EP15 nonE Choose Heat Cool Alarm Timer Hrs Min Timer Min Sec or No output action Ac Ac SP Act I E IAc E ISP Choose the primary last 2 characters and secondary first 2 characters Default displays Press C139 to toggle to the secondary display for 15 seconds Prac Prano doc doo Choose an alarm type Process normally closed Process normally open Deviation normally closed or Deviation normally open Lo L999 317555 0 1 9990 0I 559 Select a value in whole degrees 1 F to 999 F or 1 C to 555 C or in tenths of degrees 0 1 F to 999 0 F or 0 1 C to 555 0 C 60 Watlow Series 935A User s Manual Default none Prnc 3 F or 2 C Hidden if ERg ERSg or if and or OEP e RL PD ERSg C or if and or Ob ej AL P
23. Your Settings El o c 9 E i 3 E g I fe oO Prompt C LAE Alarm Latch Alarm Silencing Input Failure Mode Timer Output Function Strt Start Timer Function cd Timer Ready Band Range nol YES Choose YES for a Latching Alarm no YES Choose YES for a Silenced Alarm on start up or silencing during operation IbPLS 100 Choose Bumpless Transfer or Percent Power don dL oF Soo Dot Choose Delay ON Delay OFF Signal ON or Signal OFF LIP 9d c dS c d 9R Phdr Choose Immediate Ready Band Ready Band Acknowledge or Power 999 555 9990 5550 le d YA ot then select a value in whole degrees 0 F to 999 F or 0 C to 555 C or in tenths of degrees 0 0 F to 999 0 F or 0 0 C to 555 0 C BELL HE a Default Bumpless Delay OFF Immediate 0 F or 0 C Hidden if or if and or z RL Pl SR _ j or if and or z BL Pl a ABAg tj or if and Qtgj or cooL _ E uy B ERD or S d C or if ERD or P d LEAg E or if LOE z EHP Dor EP 15 Watlow Series 935A User s Manual 61 Your Settings Prompt L SEJ Signal Time 5L OC Set Point Lockout ER Lockout Tag E o c 2 S b E o o Range 10183 9 If 53on or then
24. change See Using Lockout Functions p 18 e Output set up you must choose EET3T3 or AHHA in either Output 1 or Output 2 to have access to the PID Menu With a 33 13 only choice HAA prompts are not visible and vice versa See the Valid Output Functions Table p 3 or Setting Up Inputs and Outputs p 20 Watlow Series 935A User s Manual 15 Learn the Configuration Menu The Configuration Menu is the second sub menu in the Operations Menu Use it to set Inputs Ranges Output Types Alarms Timer Failure Mode and Lockouts To go to the Configuration Menu Go first to the Operations Menu by pressing and 9 simultaneously for three seconds Scroll through the Operations Menu with until you see the prompt While holding G3 to display EF choose with amp or 9 Release Gp to see the first prompt SF To leave the Configuration Menu press and for 3 seconds am P so bo Table 6 Configuration Menu Overview Input Type Choose sensor type See p 21 for sensor ranges oe WI ED E EG WH WS Jc K tc Tue N t c E t c S t c 1 0 RTD 0 1 RTD Celsius Fahrenheit Choose displayed unit of measure G E k oF C Input Range Low Select lowest displayable set point Ranges p 21 Select a value lowest displayable set point between Input Type Range Low and Input Range High Input Range High Select highest displayable set point Ranges p 21 Select a v
25. control and laboratory use Part 1 General requirements d clare que le produit suivant Francais D signation S rie 935 Num ros de mod le 935 A ou B 1C C D ou K 0 ou 1 N importe quelle combinaison de quatre lettres ou chiffres R gulation de temp rature Cat gorie d installation Il Degr de pollution II Tension nominale 100 240 V c a ou 24 28 V c a ou c c Fr quence nominale 50 ou 60 Hz Consommation d alimentation nominale 6 VA maximum Classification R pond aux normes essentielles des directives suivantes de l Union europ enne en utilisant les standards normalis s ci dessous qui expliquent les normes auxquelles r pondre Directive 89 336 CEE sur la compatibilit lectromagn tique EN 61326 1997 avec A1 1998 Mat riel lectrique destin l talonnage au contr le et l utilisation en laboratoire Exigences CEM Immunit industrielle Emissions de cat gorie A EN 61000 4 2 1996 Avec A1 1998 Immunit aux d charges lectrostatiques EN 61000 4 3 1997 Immunit aux champs de radiation EN 61000 4 4 1995 Immunit contre les surtensions lectriques rapides Rafale EN 61000 4 5 1995 avec A1 1996 Immunit contre les surtensions EN 61000 4 6 1996 Immunit conduite EN 61000 4 11 1994 Immunit contre les carts de tension interruptions courtes et variations de tension EN 61000 3 2 1995 avec A1 3 1999 Emissions de courant harmoniques EN 61000 3
26. normally displayed value and set is inside the timer ready band values See PEETA p 16 Clears a latched alarm r Up B Increment Down Decrement Arrow Key Selects new information when Set Key is pressed Steps through software menus and parameters Starts and stops the timer To set up the control go to the Easy Software Map p 9 Watlow Series 935A User s Manual 5 Begin Controlling 1 Apply power to the system A properly wired Series 935A will begin controlling the thermal system as soon as you apply power to it 2 Look at the Series 935A s display It is reading actual temperature set point temperature or time To change set point go to p 7 The Series 935A will auto tune when you tell it to go to p 32 f you see an error go to p 8 Figure 3 Begin Controlling Va 6 Watlow Series 935A User s Manual LE Change Set Point Your Series 935A displays the actual process temperature when it comes from the factory You can change it to normally display the set point or time Go to p 16 see EESTI 1 Press and hold Gi3 2 Press one of the arrow keys to alter the set point either upward or downward 3 Release Gi to complete the change Figure 4 Changing the Set Point Watlow Series 935A User s Manual 7 A Respond to a simple error If You See An Error Code 1 Be aware that most errors
27. the gasket is fully seated in its bezel channel See Figure 12 Figure 14 Terminal Block Removal Procedure 1 Press in on sides of cover to release the terminal cover hooks 2 Move your grip rearward slightly then lift the terminal cover straight up Watlow Series 935A User s Manual 41 Wiring a 935A Figure 15 Wiring the Series 935A AN WARNING All electrical wiring and fusing must conform to local and national electric codes Contact local authorities for further information Failure to comply with electric codes could result in injury or death or damage to property Power Wiring Input Wiring IN OT1 OT2 POWER IN OT1 OT2 POWER 100 240 S281 VOLTS CA RAM 1 213 415 617 8 1 213 41 15 6 7 8 GO oO oO o o o i GO oO oO o o o o o Remote Set Point High Voltage Remote Set Point Input IN OT1 OT2 POWER IN OT1 OT2 POWER S2 S1 e S2 S1 e a hy VOLTS 2 14 de 1 213 415 6 7 8 1 213 4 15 617 8 GO oO oO o o o GO oO oO oO o o E 2 wire EES aw 1000 RTD Input S3 3 wire A CAUTION Using grounded thermocouples with non isolated output switching devices could introduce ground loops into Thermocouple Input the control system and possibly damage the controller and product NOTE Torque terminals to 1 36 Nm 12 in Ibs 42 Watlow Series 935A User s Manual Ki WARNING All electrical wiring and fusing must conform to loca
28. 00 ohms Volt source 5V Store high end RTD counts Store 5V remote set point counts for use with RTD L mV source Temp Compensation Volt source OV Store ambient counts at 32 F Type J 34 Watlow Series 935A User s Manual EELS EB e Restore factory calibration Calibrating the 935A and Remote Set Point Input Thermocouple and Remote Set Point Input Field Calibration Procedure Equipment Required Type J Reference Compensator with reference junction at 32 F 0 C or Type J Thermocouple Calibrator set at 32 F 0 C e Precision millivolt source 0 50mV min range 0 01mV resolution Set Up 1 Ge 100 240 ac or 24 28Vx ac dc to Terminal 7 and Terminal 8 2 Connect the millivolt source to Terminal 1 negative and Terminal 2 positive 3 Connect voltage source to Terminal 3 negative and Terminal 4 positive 4 Apply power to the unit and allow it to warm up for 15 minutes Move to the Calibration Menu 1 Press and 9 simultaneously for 3 seconds 2 Press or 9 until is displayed Press and hold Gi press 9 or 9 to select BEIZ then release Gap 3 Press 3 or 9 until is displayed Press and hold Gi Press 9 or 38 times display shall be blank Calibration Thermocouple 1 Press and hold Gi and 9 simultaneously for 3 seconds until is displayed 2 Set the mV source to 50 00mV dc Set the voltage source
29. 11 Series 935A Dimensions 44 96mm 1 770 in x m ED C C 2 C73 C 2 C 2 53 1mm 2 09 in TA ON 5 o D eis Enr I 1 1 14 in Se ae n T i OMNCM NCC J l wor SE e Panel Thickness Panel Cutout 1 5mm to 9 7mm 0 060 to 0 38 in Maximum Overall Depth P 114 3mm 4 50 in sl 101 6mm 4 00 in Ar m 4 22 10mm 0 870 in TL Leer J I 12 7mm 0 50 in Watlow Series 935A User s Manual 39 Installation Procedure p 1 Make a panel cutout using the dimensions in Figure 9 p 38 2 Insert the 935A into the cutout Check to see that the gasket is not twisted Make sure the rounded side of the D shaped external case gasket faces the panel surface and the gasket is fully seated in its bezel channel See Figure 12 3 While pressing the bezel firmly against the panel slide the mounting collar over the back of the control The tabs on the collar must line up with the mounting ridges on the case for secure installation See Figure 12 again 4 Slide the collar firmly against the back of the panel getting it as tight as possible Make sure you cannot move the case within the cutout if you can you do not have a IP65 NEMA 4X seal 5 Make sure you have a tight seal Use your thumb to lock the tabs into place while pressing the case
30. 2425 Fax 433 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 Fl 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 Hanil Bldg 3rd Floor 210 5 Yangje Dong Seocho Gu Seoul 137 130 Korea Telephone 82 2 575 9804 Fax 82 2 575 9831 Watlow Malaysia Sdn Bhd 38B Jalan Tun Dr Awang 11900 Bayan Lepas Penang Malaysia 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 Kaohs
31. 5 0 to 60 0 seconds Default 30 0 seconds Dead Band S973 Dead Band adjusts the effective cool set point above the primary set point by the Dead Band value in de grees This creates a band between the heating and cooling proportional bands where only integral and derivative activity will occur For more information on Dead Band fine tuning go to p 33 Range 0 to 999 F 555 C or 0 0 to 999 0 F 555 0 C Default 0 Integral A Select a value minutes repeat for the integral function Integral is the inverse of Reset It value 1 Reset value Range 0 00 to 99 99 minutes repeat Default 5 00 minutes repeat Derivative BJJ Select a value minutes for the derivative function Range 0 00 to 9 99 minutes Default 0 00 minutes Calibration Offset zz Eliminates the difference between the displayed process temperature and the actual process temper ature value Range 999 to 9999 F C or 99 9 to 999 9F C Default 0 Watlow Series 935A User s Manual 13 C Learn the PID Menu Details Table 5 PID Menu Overview Set Up Heat Proportional Band em Select a heat proportional band value WER Gz RW Wu Se or 0 C to 555 C or 0 0 F to 999 0 F or 0 0 C to 555 0 C Hysteresis Heat Select a heat ON off control switching hysteresis ENED SEH e WII ee ta h95n 1 F to 999 F or 1 C to 555 C or 0 1 F to 999 0 F or 0 1 C to 555 0 C ZS Time Heat Select a cycle time
32. 55 to 62 with the settings from your control if possible 3 Specifications of devices directly interfaced with the control 36 Watlow Series 935A User s Manual Table 13 Error Codes and Actions Display Probable Cause Recommended Action E l Reversed thermocouple Change the sensor A D P connection to leads on Terminals 1 and 2 under flow Sensor type Go to In prompt check selection see p 20 Sensor E mismatch or open RTD or check RTD replace as necessary under range Sensor type Go to In prompt Sensor P mismatch check selection see p 20 over range E m Open Thermocouple bad Check the sensor A D E connection or broken wire replace as necessary over flow Electrical noise Cycle power to system See if error clears Check system for electrical interference Control is inoperable Check for line voltage at terminals 7 and 8 m un To Troubleshoot Sensor Remove sensor wires from Terminals 1 and 2 For a thermocouple sensor Series 935A place a jumper wire on Terminals 1 and 2 Control should display the ambient temperature at the back of the control For an RTD sensor Series 935A place a 110 10Q resistor on Terminals 1 and 2 The control should read 100Q 32 F 1109 77 F 1209 127 F An RTD sensor Series 935A can be configured in software as if it were a thermocouple unit and then tested as above e You can restore factory calibration BJJ see p 34 35 Tabl
33. BIE O Operations Menu except gz A Auto tune Watlow Series 935A User s Manual 17 m Using Lockout Functions Configuration Menu Input Type Celsius Fahrenheit Input Range Low Input Range High En Output 1 Function Output 2 Function Display Default Alarm Type Alarm Hysteresis Alarm Latch Alarm Silencing Failure Mode Timer Function Start Timer Timer Ready Band Signal Time SLOL Set Point Lockout EA vi Lockout Tag The Series 935A offers three different security or lockout options Set up one or all three lockout op tions in the Configuration Menu Ki e Front Panel Lock uses a control output as an input for an external hardware switch it requires wiring see p 23 Choose Front Panel Lock as an exclusive Output 1 choice Output 2 offers heat cool or alarm e Choose Set Point Lock tz as the simplest lockout option It locks the Primary Set Point from change but not from view e Choose the Security Tag as a means of masking the Series 935A software menus from view By selecting all or part of the four digit binary acronym Jat Proportional Configuration Operation Auto tune you can choose to mask those items from view and therefore from change For example In the Configuration Menu set up if you can see the P the opera tor cannot see the PID menu e Exceptions to Janz are C does not lock out MZE
34. Normally Closed or 2275 Alarms de energize the alarm output when an alarm condi tion occurs and energize it when the alarm is cleared Use this type as a deadman switch where system continuity is required for operation See Table 10 LI next page For example by running the control output through the alarm output you can set a normally closed process alarm to disable the process when the process exceeds the alarm set point The alarm output will be off when power is off Alarm Hysteresis sets a point the process must pass on a return from an alarm condition excur Sion to the and points before the alarm can clear This prevents the alarm output from chattering if the process is hovering around the alarm set point See Table 10 7732753 next page Latching Alarms require the operator to clear them with a D press after the process returns to a safe or non alarm condition Non latching alarms self clear See Table 11 BJA p 27 Silenced Alarms provide a means to clear the alarm output with a C13 press even if the alarm condition still exists The flashing or message will persist until the alarm condition ceases See Table 11 EJA p 27 If B733 alarms are disabled no message or output on startup until the safe area is reached Alarm High and Low Points and BIN in the Operations menu determine where alarms will trigger Alarm hysteresis HPE determines where an alarm condition clears See Table 11 page 27 To Clear
35. Point Desired control value before and after timing period Integral Accumulates error to eliminate offset or droop It 1 re Local Set Point Primary set point not remote ON OFF Control by turning the output full ON until set point is reached and then turning OFF until the process error exceeds the hys teresis Operations Menu Series 935A software menu provides a location to start auto tune set alarm points set countdown time choose an idle or normal set point type choose a local or remote set point input and to go to the PID or Configuration Menus Overshoot The amount a process variable exceeds set point before stabiliz ing Percent Power Control Open loop control with output power set at a particular level PID Proportional Integral Derivative A control mode proportional action sets the system integral reduces droop derivative re duces overshoot and undershoot PID Menu The first software sub menu of the Series 935A Operations Menu provides a location to manually set values for proportional band hysteresis cycle time integral derivative and calibration offset Process Alarm A fixed value independent of set point Process changes beyond this value register an alarm condition Process Error The difference between the set point and the actual process Proportional Output effort proportional to the error from set point If the pro portional band is 20 and the process is 10 below se
36. Point Lock e The function of Output 1 determines Valid Output Functions the options available for Output 2 First select Output 1 Then select Output 2 First select the function of Output 1 Heat None Cool Alarm Timer Refer to the table right then select Cool E the function of Output 2 Alari None Heat Cool Remote Set Point Heat Cool Front Panel Lock Heat Cool Alarm None Heat Cool Alarm Output 2 Function Choose Output 2 type dependent on Output 1 choice Heat Cool Alarm Timer Timer None Hr Min Min Sec Display Default Choose the primary last 2 characters and secondary first 2 characters default displays Press G49 to toggle to the secondary display for 15 seconds d ID EA GATA E533m E bel GET No secondary Actual temperature Actual temperature Time remaining Time remaining Actual temperature Set point Time remaining Actual temperature Set point temperature temperature Watlow Series 935A User s Manual 21 rSP Y Configuration Menu Input Type Celsius Fahrenheit 4 Input Range Low Input Range High Inr Output 1 Function Output 2 Function Display Default Failure Mode Set Point Lockout Lockout Tag Operations Menu Auto tune L c Local Remote wi PID Configuration Set Up Remote Set Point Input To Set Up Remote Set Point Wire the control per the example below and the information on p 42 45 Go
37. Series 935A User s Manual WATLOW _ PS j LI WI 2 RDY gt gt gt SET E EZ Temperature Controller with Countdown Timer CE TOTAL CUSTOMER SATISFACTION 3 Year Warranty iM WATLOW 1241 Bundy Boulevard P O Box 5580 Winona Minnesota USA 55987 5580 U S English Phone 1 507 454 5300 Fax 1 507 452 4507 http www watlow com Winona Minnesota USA 0600 0015 0000 Rev L 15 00 January 2002 Supersedes 0600 0015 0000 Rev K A Safety Alert CAUTION or WARNING A Electrical Shock Hazard CAUTION or WARNING Safety Information in this Manual Note caution and warning symbols appear 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 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 A symbol an exclamation point in a triangle precedes a general CAUTION or WARNING statement The A symbol a lightning bolt in a lightning bolt in a triangle precedes an electric shock hazard CAUTION or WARNING safety statement Technical Assistance If you encounter a p
38. Set Point Choose to use the remote set point input A L unl Local Remote PID Menu Go to the PID Menu EET Configuration Menu Go to the Configuration Menu EET Watlow Series 935A User s Manual 11 Learn the PID Menu Choose the PID Strategy You may rely solely on the Auto tune function p 32 and factory defaults to determine PID values for your system or you may use auto tuning and additional manual adjustments You must select dead band 772 and calibration offset values manu ally The Series 935A PID Menu is the first sub menu you encounter after moving to the Operations Menu The PID Menu provides a soft ware location to select the individual heat or cool proportional band hysteresis and cycle time values and the dead band integral derivative and calibration offset values To go to the PID Menu Go first to the Operations Menu by pressing and 9 simultaneously for three seconds Scroll through the Operations Menu with 9 until you see the MEZE prompt While pressing amp to display EY choose with or 3 Release Gp to see the first PID prompt P bb NOTE Access to the PID Menu and the prompts there varies with lockout function and output set up The PID Menu is locked out when the 935A leaves the factory e Lockout function the Lockout Tag function masks menus from view if you cannot see a prompt you can make no change See Using L
39. alue highest displayable set point between Input Type Range High and Input Range Low Output 1 Function Choose Output 1 type see Valid Outputs Table p 21 COG GMA Heat Cool Alarm Remote Front None Set Point Panel Lock Output 2 Function Choose Output 2 type dependent on Output 1 choice COOL ALPA Eras Heat Cool Alarm Timer Timer None Hr Min Min Sec Display Default Choose the primary last 2 characters and secondary first 2 characters default displays Press C13 to toggle to the secondary display for 15 seconds Actual Actual Time Time remaining secondary temp temp remaining Set point temperature Actual Set point Time Actual temp temp remaining temp Alarm Type Choose alarm type with output action Process Process Deviation Deviation normally normally normally normally closed open closed open 16 Watlow Series 935A User s Manual NOTE Access to Configuration Menu varies with lockout function See p 19 Alarm Hysteresis Choose alarm switching band TIS WER EEEN ENDE EEE 1 F to 999 F or 1 C to 555 C or 0 1 F to 999 0 F or 0 1 C to 555 0 C Alarm Latch Choose latching or non latching alarms A latching alarm requires a C139 press to clear it after the alarm condition clears m men LAE NO YES Alarm Silencing Choose to silence alarms on startup or not silence an alarm with a G i press NO YES Failure Mode Choose output action after a sensor failure
40. an Alarm that is latched or silence able requires the operator to press the Gp key after the process returns to a safe or non alarm condition Non latching alarms self clear See Table 11 and Pm p 27 Table 10 p 25 and Table 11 p 27 illustrate the Series 935A alarm features 24 Watlow Series 935A User s Manual Table 10 Alarm Functions Deviation Alarm Process Alarm ALLEY EIS CLD Geers GEEF Deviation Deviation Process Process normally normally normally normally Alarm Type closed open closed open Non Alarm State LED off e e e Alarm Output A oe Alarm State gt N SR i B mm LED on TEN ANS TAN TAS Alarm Output Status _ dh a eg Silenced Alarm State e o e o LED off Alarm Output Status a X A eg Power Off State LED off e e e Alarm Output Status A A EE a ae Function A deviation alarm tracks set point A process alarm is a fixed value independent of set point _ Ab IN Alarm High Region RAYS Set Point Safe Area EEEF ALOMA Alarm Low Region Ah e Alarm High Region RAYS Safe Area 0 SC OG Low Region Alarm Hysteresis is the change in the process variable actual required to clear the alarm relay after an alarm occurs Watlow Series 935A User s Manual 25 Configuration Menu Input Type Celsius Fahrenheit Input Range Low Input Range High Output 1 F
41. are input sensor related 2 Read the table below and follow its recommendations Table 2 Error messages and recommended action Display Probable Cause Recommended Action Reversed thermo couple connection to Change the sensor leads on Terminals 1 and 2 en nu Sensor type mismatch or open RTD Go to EA prompt check selection see p 20 or check RTD replace as necessary Lu Sensor type mismatch Go to EA prompt check selection see p 20 lt lt Open Thermocouple bad connection or broken wire Check the sensor replace as necessary mm Un Electrical noise Cycle power to system See if error clears Check system for electrical interference Control is inoperable Check for line voltage at terminals 7 and 8 8 Watlow Series 935A User s Manual e Simply correct the cause Errors are non latching and self clearing For advanced error and troubleshooting information go to p 37 i Learn the Software Map Software Organization e The Series 935A has three primary menus in addition to a normal display e The software reverts to the normal display after 60 5 sec Table 3 Software Organization Display Actual Temperature Set Point or Time Remaining To access the Operations Menu press the 9 and 9 keys simultaneously for three seco
42. ations Menu depends on two features of the Series 935A Lockout function the Lockout Tag function masks prompts from view in the various menus If you cannot see a prompt you can make no change See Using Lockout Functions p 18 for more information Output 1 and 2 Configuration some outputs are mutually exclusive For example if Output 1 is Alarm then Output 2 cannot be Timer Therefore the Operations menu will have no timer related prompts See the Valid Output Functions Table p 3 or Setting Up Inputs and Outputs p 20 10 Watlow Series 935A User s Manual Table 4 Operations Menu Overview To enter the Operations Menu press the and 9 keys simultaneously for three seconds Auto tune Start the auto tune action to automatically select a set of viable PID values will flash during auto tuning Bg no H NO YES Alarm Low Select a low alarm point adjustable between Off Range Low and Alarm High Alarm High Alarm High Select a high alarm point adjustable between Alarm Low and Range High or OFF Alarm Low Countdown Timer Select a countdown time duration 00 00 to 99 59 Hrs Min or Min Sec Idle Set Point Type Choose to track set point or select a separate idle set point adjustable between Range Low and Range High When or 30053 view the idle set point from the set point display with a three second C139 press fa L Track Range Range Set Low High Point Local Remote
43. dging with a GSD press 4 Start immediately on control power up without waiting for the Ready Band temp or a press e Reagy band width above and below set point degrees e Signal time if applicable duration seconds Operations Menu set up includes see p 10 e Countdown Time AHHA hours minutes or minutes seconds e de Set Point Type WEIN two choices 1 Track primary set point always controls at the set point value 2 Setan idle set point for control when not timing The next page presents this information in graphic format with additional detail 28 Watlow Series 935A User s Manual Configuration Menu Table 12 Series 935A Timer Functions Settings wi m nn Timer set up l j L c Si 5 available only when es i Choose time in hr min or min sec or Delay ON Delay OFF Signal ON Signal OFF ele En mn Timer Output enum Leen ra lames Function Choose one of four Output 2 is Output 2 is Output 2 is Output 2 is possible output ON before OFF before OFF before ON before actions for the end timing OFF timing ON amp during amp during of the timer during tim during tim timing ON timing OFF mun ing ON ing OFF after timing after timing time periods after timing after timing then OFF then ON TZYZEm Timer starts immediately on a key press at the normal display Skri A without waiting for the Ready Band temperature Timer only runs in the Ready Band ke
44. down time value adjustable between 00 00 and 99 59 hrs mins or min sec Default 75 F or 23 C Type J Range Low Type J Range High tr Ac l_ rt ch Choose an idle Set Point Trac is an Idle Set Point equal to the Primary Set Point or select a value between Input Type Range Low and Input Type Range High Ecc Hidden if Appears always t R9 H tRSg 0 j or if gt ijand Gtejx RLP tRg O0 or if DE D and OEg RLP ERSgI 0 or if Ote z EhP1or Div tRSg 0 j or if Oto iEthPnnjor EP 75 NOTE All prompts except SP and ES are hidden if FPL Watlow Series 935A User s Manual 55 Your Settings 56 Ej z E a 9 T LJ o 2 el Prompt Ce Local Remote Set Point P id PID Menu Configuration Menu Pb h Proportional Band Heat hg Sh Hysteresis Heat Range L 43 0 Choose Local or Remote Set Point lL no HES Choose YES to move to the PID Menu no SES Choose YES to move to the Configuration Menu 00 559 Select a value in whole degrees 0 F to 999 F or 0 C to 555 C or in tenths of degrees 0 0 F to 999 0 F or 0 0 C to 555 0 C 11 999 Lo 55 0 1 9990 C0 1 559 Select a value in whole degrees 1 F to 999 F or 1 C to 555 C or in tenths of degrees 0 1 F to 999 0 F or 0 1 C to 555 0 C Watlow Series 935A User s Manual
45. e 14 Troubleshoot Control Outputs When indications such as significant differences between set point and actual temperatures point to no output action check output configurations as described on p 23 Check wiring p 44 Measure Output Terminals Load on State Load off State C Output 1 3 amp 4 LED 1 on LED 1 off 3 0 to 7 0V dc 0 0V dc C Output 2 5 amp 6 LED 2 on LED 2 off 3 0 to 7 0V dc 0 0V dc D Output 2 5 amp 6 LED 2 on LED 2 off OV dc line voltage Load sees line voltage Load sees OV dc K Output 2 5 amp 6 LED 2 on LED 2 off lt 2V dc line voltage Load sees line voltage Load sees OV dc Watlow Series 935A User s Manual 37 Mounting Figure 9 Panel Cut out Dimensions Panel Thickness 1 5 mm to 9 7 mm 0 060 to 0 38 in 45 0mm 1 772 in 12 7mm 0 500 in 0 6mm 0 0mm 40 024 in 0 000 in 22 2mm 0 874 in 40 3mm 0 0mm 40 012 in 0 000 n 12 7mm dc caf 0 500 in Figure 10 Mounting Layout for Knockouts 2 Layout for four 1 32 DIN knockouts with punch and die 34 9mm 1 374 in p 2 272 in Punch and Die Supplier DAZ meme St Greenlee Textron Inc Phone 1 800 435 0786 Catalog Number 50740180 Available 4 6 weeks Greenlee distributor 38 Watlow Series 935A User s Manual c3 Dimensions Figure
46. for the heat output 0 1 to 60 0 seconds 5 0 to 60 0 seconds SSR or Switched dc Electromechanical Relay Dead Band Select a dead band value db m GEE Wu WH Wm EEEI Wu EET O F to 999 F or 0 C to 555 C or 0 0 F to 999 0 F or 0 0 C to 555 0 C Set Up Cool Proportional Band Cool Select a cool proportional band value Ph m E MM dd Kid n E O F to 999 F or 0 C to 555 C or 0 0 F to 999 0 F or 0 0 C to 555 0 C Hysteresis Cool Select a cool ON off control switching hysteresis END EEE WO WH WH EEEI WH Eau 1 F to 999 F or 1 C to 555 C or 0 1 F to 999 0 or 0 1 C to 555 0 C Cycle Time Cool Select a cool output cycle time t D c ENG EHN EN Wm 0 1 to 60 0 seconds 5 0 to 60 0 seconds SSR or Switched dc Electromechanical Relay 14 Watlow Series 935A User s Manual Set Up General Integral Function Select an integral value l D anum EEE 0 00 to 99 99 minutes repeat Derivative Function Select a derivative value WEI 5 ou 0 00 to 9 99 minutes Calibration Offset Select a calibration offset value CAL EZEF EEEH GEEE EEEE 999 to 9999 F or C or 99 9 to 999 9 F or C Note Access to the PID Menu and the prompts there varies with lockout function and output set up The PID Menu is locked out when the 935A leaves the factory e Lockout function the Lockout Tag function masks menus from view if you cannot see a prompt you can make no
47. from side to side Don t be afraid to apply enough pressure to install the con trol The tabs on each side of the collar have teeth which latch into the ridges See Figure 12 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 6 Lookat Figure 13 you see that the tabs on one side of the collar correspond with those on the opposite side Be sure only the two corresponding tabs are locked in the ridges at the same time If the matching tabs are not holding the case no IP65 NEMA 4X seal exists Make a visual check or use your finger nail to pull out on each tab The space be tween the bezel and panel must be 0 to 0 48 mm 0 to 0 019 in Collar Removal Slide a thin wide tool putty knife under all three mounting tabs top then bottom while pushing forward on the back of the case 40 Watlow Series 935A User s Manual Figure 12 Mounting Case Top View and Collar Cross Section 0 to 0 483 mm space 0 to 0 019 in Panel TU T Mounting Collar A a Figure 13 Case Hear View and IP65 NEMA 4X Seal Example PE en e NOTE To guarantee a proper IP65 NEMA 4X seal make sure the gasket between the panel and the rim of the case is not twisted and is seated properly Press firmly NOTE Make sure the rounded side of the D shaped external case gasket faces the panel surface and
48. ies 935A User s Manual 49 Height Length Specifications Width Specifications 2191 Control Mode Auto tune PID PID PD PI on off Countdown timer hours minutes minutes seconds Timer output modes Delay off Delay on Signal off Signal on Agency Approvals UL C UL 508 Listed File E102269 e IP65 NEMA 4X2 rated front panel CE approved 89 336 EEC Electromagnetic Compatibility Directive EN61326 Industrial Immunity Class A Emissions 73 23 EEC Low voltage Directive EN 61010 1 1993 Safety Operator Interface Single seven segment digital display factory selectable red or green Outputs operation annunciators three discrete LEDs Three tactile feedback momentary switches Front panel lock dry contact closure disables front panel operation Accuracy 0 25 of span 1 LSD or Types S and T thermocouple 9 lt 200 C 0 32 of span 1 LSD typical Ambient Rejection e lt 0 15 C C rise in ambient or Types S and T thermocouple 0 47 C C rise in ambient typical Sensors Inputs Sensor input sampling rate 10 samples second 10Hz Type E J K N S and T thermocouple grounded or ungrounded junction e RTD 1000 platinum two wire DIN curve Remote set point input field selectable 0 5V dc scalable 10kQ input impedance Remote Input Option A only Remote timer start dry contact closure initiates timer start Remote Input O
49. ing inductive loads relay coils solenoids etc with the mechanical relay or solid state relay output options requires using an R C suppressor Watlow carries the R C suppressor Quencharc brand name which is a trademark of ITW Pakron Watlow Part No 0804 0147 0000 Watlow Series 935A User s Manual 43 NS d System Wiring Examples Figure 16 Series 935A System Wiring Examples Ki WARNING All electrical wiring and fusing must conform to local and national electric codes Contact local authorities for further information Failure to comply with electric codes could result in injury or death or damage to property L1 120V ac 2 L2 Earth Ground HR oe arth Groun temperature light L Coil High Limit 3 l Mechanical L2 Contactor N 9 C NO NC Series 935 3 935A 1CD0 000G E os 3 E IN OT1 OT2 POWER DIN a mite S 100 240 6 a mite S2 1 E VOLTS DA10 24C0 0000 mere a 983 40 Heater 146E 1601 1000 V H Series 146 limit control 1011121314151617 99099000 Process Sensor Limit Sensor Reset Optional Normally Open CAUTION Using grounded thermocouples with non isolated output switching devices could introduce ground loops into the control system and possibly damage the grounder and product 44 Watlow Series 935A User s Manual Mo
50. ion that the bread is done Recommended Control A Series 935A 1CD0 000G control Switched dc Output 1 wired to a dc input solid state relay SSR switches the heaters Electromechanical relay Output 2 wired to an AC audible indicator provides done indication Configuration Menu Set up F After a GSD press actual temperature appears for 15 seconds Heating output Time minutes seconds Output 2 turns ON briefly at the end of the timing cycle Timer waits to countdown until temperature deviation from set point lt value and the amp key is pressed r Ready band 10 F T M MM o E ad uo a eS i i ey il n uu EN Ke offoff w Gel Ee Ke ES di Ma Output 2 turns ON for 10 sec at the end of the timing cycle Operations Menu Set up Bake time 30 minutes The set point temperature before a timing cycle starts and after a timing cycle completes Set Point BEEF Operator Control Actions With the oven idling at 75 F the chef starts the preheat cycle with a press The display immediately shows 30 00 with the colon ON steadily The RDY LED is off Series 935A begins to control to the 350 F bake set point As 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 B to acknowledge the Ready Band and thereby start the bake cycle Time starts counting down Actual temperature display
51. itorias EN 61000 4 5 1995 con A1 1996 Inmunidad a picos de voltaje o corriente EN 61000 4 6 1996 Inmunidad por conducci n EN 61000 4 11 1994 Inmunidad a ca das de voltaje variaciones y pequefias interrupciones de voltaje EN 61000 3 2 1995 con A1 3 1999 Emisiones de corriente arm nica EN 61000 3 3 1995 con A1 1998 Fluctuaciones de voltaje y centelleo 73 23 EEC Directriz de bajo voltaje EN 61010 1 1993 con A1 1995 Requisitos de seguridad de equipo el ctric para medici n control y uso en laboratorio Parte 1 Requisitos generales Winona Minnesota USA Place of Issue Jim Boigenzahn Name of Authorized Representative August 2001 Date of Issue General Manager Title of Authorized Representative j H Signature bt Authgriged Representative Notes Watlow Series 935A User s Manual 53 Notes 54 Watlow Series 935A User s Manual 2 Z o a 9 T Lj E 2 el 935A Software Map Prompt L 5P Primary Set Point But Auto tune LALO Alarm Low Alarm High Par Countdown Timer Lid LE Idle Set Point Type Range LI ch Select a value adjustable between Input Type Range Low and Input Type Range High LC no YES Choose YES to Auto tune the 935A Bh Select a value adjustable between Range Low and Alarm High rtd Select a value adjustable between Alarm Low and Range High 0000 Select a count
52. iung Taiwan Telephone 886 7 288 5168 Fax 886 7 288 5568
53. l and national electric codes Contact local authorities for further information Failure to comply with electric codes could result in injury or death or damage to property Output 1 Wiring Internal Circuitry 5 7 to 8V 100 Current imi ke Goma OT2 8 Output 1 Switched DC C Output 2 Wiring IN OT1 OT2 POWER 1 2 13 415 6 7 8 oO oO o oo Output 2 Solid State Relay K IN OT1 OT2 Power 1213 4 15 6 7 8 Go oO o o o Output 2 Electromechanical Relay D OT1 OT2 POWER 4 8 3 5 67 GO oO o o See Caution 60 to 70Q 0 5w resistor Output 1 Front Panel Lock A Internal Circuitry AE i i 5 7 to 8V I 100 I I Current 1 I Limit 1 60mA I El E EE 4 IN OT1 OT2 POWER S2 S1 4 1 213 415 617 8 GO oO o Go T o o Output 2 Switched DC C CAUTION Failure to install a 60 to 70O 0 5w resistor across the customer supplied Front Panel Lock switch will cause the panel to lock out even when the switch is open Injury to personnel or damage to equipment or property could result A WARNING When Output 1 is a Front Panel Lock Nm the output is energized Do not connect a power switching device to Output 1 injury or death or damage to equipment or property could result NOTE Switch
54. lure Watlow s obligations hereunder at Watlow s option are limited to replacement repair or refund of purchase price and parts which upon examina tion prove to be defective within the warranty period specified This warranty does not apply to damage resulting from transportation alteration misuse or abuse Returns e Call or fax your distributor or the nearest Watlow sales office for best information about returns See outside back cover e Toreturn directly to Watlow Winona in the U S first call or fax Customer Service for a Return Material Authorization RMA number telephone 1 507 454 5300 fax 1 507 452 4507 e Put the RMA number on the shipping label along with on a written description of the problem e Arestocking charge of 20 of the net price is charged for all standard units returned to stock How to Reach Us TOTAL CUSTOMER SATISFACTION 3 Year Warranty Quality and Mission Statement Watlow Winona will be the world s best supplier of superior measurement and control products services and systems by exceeding the expectations of our customers shareholders and employees Your Authorized Watlow Distributor Europe Watlow GmbH Industriegebiet Heidig Lauchwasenstr 1 Postfach 1165 Kronau 76709 Germany Telephone 49 7253 9400 0 Fax 49 7253 9400 44 Watlow France S A R L Immeuble Somag 16 Rue Amp re Cergy Pontoise CEDEX 95307 France Telephone 33 1 3073
55. me duration the timer output will turn ON or OFF after a com plete timing period SCR Silicon controlled rectifier A solid state device or thyristor with no moving parts that is used in pairs to control AC voltages within one cycle SCRs control voltage from a power source to the load by burst firing also called zero cross firing or phase angle firing SSR Solid State Relay A solid state switching device that switches current ON and OFF It has no moving parts Thermal System A regulated environment consisting of a heat source heat trans fer medium sensing device a control instrument and a redun dant control device limit Thermocouple A temperature sensing device made by joining two dissimilar met als This junction produces an electrical voltage in proportion to the difference in temperature between the hot junction and lead wire connection to the sensing device cold junction Undershoot The amount a process variable falls below set point before stabi lizing Watlow Series 935A User s Manual 47 Ed Index Auto tune Alarms Alarm High Alarm Low Alarm Type Clearing Alarms Deviation Hysteresis Latch Learning Process Setting Silencing Bumpless Transfer AZI C Calibration Factory Restore Calibration Offset Celsius Fahrenheit Clearing Alarms Configuration Cycle Time Heat Cool Dead Band SEE Derivative Dimensions DIN a mite compatibility Display Default PEJ E Errors F
56. mentary Switch Figure 17 Series 935A Ladder Diagram Wiring Example Ki WARNING All electrical wiring and fusing must conform to local and national electric codes Contact local authorities for further information Failure to comply with electric codes could result in injury or death or damage to property T 120V ac L2 CD 1 3 2 2 S1 on om oom Series 935 TT SD Pe Ss 935A 1CD0 000G 4 Temperature GG ur Controller Branch FO Dia mier O Circuit Fuse 1CR 1 DA10 24C0 C000 83 SE Q qg Heater OH 5 l gl 7 a 12 13 Series 146 6 11344 146E 1601 1000 e RL 44 io Temperature Limit c C 15 44 7 NO e 3 5 Com 16 2 1 17 g NC 1 3 t Get S Hi Temp Light Watlow Series 935A User s Manual 45 2 Glossary Alarm A condition generated by the controller indicating that the pro cess has exceeded or fallen below the set or limit point Alarm Hysteresis A change in the process variable required to re energize the alarm output Ambient Temperature Temperature surrounding the components of a thermal system Auto tune Automatically sets PID values to fit a particular thermal system Bumpless Transfer When transferring from auto to manual operation the control output s will maintain the same output level Calibration Adjus
57. nds Operations p 10 PID p 12 Start Stop Set Autotune eHeat PID Functions Set Dead Band eAlarm Ranges Cool PID Functions eCountdown Timer Calibration Offset eldle after Timer Select Set Point Type Go to PID Menu Configuration Menu Configuration p 16 Set Inputs Functions Output Types Display Default Alarms Functions Timer Functions Failure Mode eLockout Functions Atthe MJ or 82135 prompt press and hold the Gi key and the 9 or 9 key to select BEJZJ Release the keys to move to the new menu Navigation Example ann e Move through each menu with the B or 9 key Make changes by pressing and holding the key and Soa then the 9 or 9 key to select a new choice or Y value Release the keys to complete the change en m To exit any menu Press and hold the Y Y Y amp and 9 keys for three seconds gmH37 EET MT i eo A A the display will revert to normal display 3 amp 3 after 60 5 seconds Y Watlow Series 935A User s Manual 9 C Learn the Operations Menu The Series 935A Operations Menu is the first menu you encounter when you press the 9 and keys simultaneously for three seconds The Operations Menu provides a location to initiate the following actions or complete the following tasks Auto tune BM3 Start or stop the auto tuning process A
58. nel mounting digital indication single temperature sensor input from a thermocouple or RTD and dual control outputs Outputs may operate in combinations of heat or cool and alarm or timer Special Features Easy to use operator interface and user s manual Compact panel footprint 1 32 DIN size Water and corrosion proof IP65 NEMA 4X rated e Reliable built to UL CUL approved safety standards with a three year warranty Accuracy with economy Universal power supply for worldwide application Unique Features The Series 935A Output 1 can be configured as a remote set point input for a multi loop control system or as an alternative that output can be a front panel lock with your switch to further reinforce the 935A s lockout capability The Series 935A timer functions include heat timer or cool timer countdown modes in hours minutes or minutes seconds 2 Watlow Series 935A User s Manual Figure 1 Series 935A Input and Output Overview Output 1 Output 2 q Dual Output Single Input Type J K T N S E Thermocouple 1 RTD or 0 1 RTD Gates d Fak witched dc A amp ET Heat Cool Alarm Remote Front None Set Point Panel Output 2 Electromechanical Relay Switched dc or Solid state Relay Lockout Heat Cool Alarm Timer None 0 Dk 30 Hr Min or Min Sec The function of Output 1 determines Table 1 Valid Output Functions the options available for Output 2 Fi
59. ockout Functions p 18 e Output set up you must choose 13 73 or rs in either Output 1 or Output 2 to have access to the PID Menu With a AZJA only choice Feis prompts are not visible and vice versa See the Valid Output Functions Table p 3 or Setting Up Inputs and Outputs p 20 NOTE Proportional Band Integral Derivative Dead Band and Calibration Offset values are adjustable in whole or tenth F or C depending on input type EI and Celsius Fahrenheit Configuration Menu choices 12 Watlow Series 935A User s Manual Set the PID Menu Values Proportional Band Heat and Cool and r Select a value degrees to set up band on either side of the Primary Set Point in which the heat and or cool proportioning function s will be active For on off control set or EA 0 Range 0 to 999 F 555 C or 0 0 to 999 0 F 555 0 C Default 25 F 17 C or 25 0 F 17 0 C Hysteresis Heat and Cool PEETA and PEEJA For use with on off control only Select the value degrees for the process vari able change required to re energize the control heat and or cool output For ON off control set or GES 0 Range 1 to 999 F 555 C or 0 1 to 999 0 F 555 0 C Default 3 F 2 C or 3 0 F 2 0 C Cycle Time and MAA Select the value seconds required for the heat and or cool output s to complete a full ON through off cycle Range Switched dc Solid State Relay 0 1 to 60 0 seconds Default 5 0 seconds Range Electromechanical Relay
60. ompanying Watlow Bulletin 89 4 3 To Clear a Series 935A Alarm In general press the Gi3 key to clear a latched or silence able ce EFS alarm Ultimately the system process value must return within the safe area for the alarm to remain clear Non latching alarms self clear 26 Watlow Series 935A User s Manual Table 11 below and Table 10 p 25 illustrate the Series 935A alarm features Table 11 Alarm Functions Latching alarm EET A latched alarm requires the An unlatched alarm self clears operator to press the Gap when actual temperature returns key to clear after the actual to within the safe area temperature returns to within the safe area Silence alarm em DUE fren With this selection an alarm With this selection an alarm cannot be silenced at the 935A can be silenced by pressing the front panel unless the alarm Gap key provides automatic is latched 73 alarm silencing on start up and the alarm condition no longer exists Alarm Low A value from input Range Low oi At the Range Low value a press displays and disables Alarm High A value from to input Range High At the Range High value a press displays and disables Watlow Series 935A User s Manual 21 0 Os Learn the Countdown Timer 30 Configuration Menu Input Type Celsius Fahrenheit Input Range Low Input Range High Output 1 Function Output 2 Function
61. ontrol output associated switching devices and annunciators See p 42 45 Go to the 935A s Configuration Menu 8213 Choose the Output 2 function as time hrs min JAHA or time min sec gg Choose a display default AMET see page 16 e Actual Temperature only ESSI e Actual Set Point HAJA Actual Time Time Actual Time Set Point Choose a Timer Output Function HHA Delay ON Delay off e Signal ON EX ET e Signal off Choose a start timer function either immediate WIE ready band BEE Ready Acknowledge BEET or Power AA If you chose or SF ETH then select a ready band value If you chose EPIA or EXEETa then select a signal time value Go to the 935A s Operation Menu Set the countdown time AHAA Choose the idle set point WIZIN3 to track the primary set point or select a separate idle set point value between the range high and range low values Run the system and test the timer start with a GSD press Document the timer settings and system 30 Watlow Series 935A User s Manual 0 Os Timer Example 30 Convection Oven Application Scenario A master chef bakes bread at 350 F for 30 minutes He wants the oven at the proper temperature with an indication when it is ready to begin baking He isn t concerned if the oven is 10 cool at first After he loads the oven the chef wants to start the countdown time by pressing a key When the baking time is complete he wants a 10 second audible indicat
62. ption B only Input Range Specified temperature ranges represent the controller s operational span Thermocouple Type E 200 to 799 C 328 to 1470 F Type J O to 750 C 82 to 1382 F Type K 200 to 1250 C 328 to 2282 F Type N O to 1250 C 832 to 2282 F Type S O to 1450 C 82 to 2642 F Type T 200 to 350 C 328 to 662 F 50 Watlow Series 935A User s Manual RTD Resolution Platinum 0 00385 Curve 1 200 to 700 C 328 to 1292 F 0 1 128 8 to 537 7 C 199 9 to 999 9 F Control Output Output update rate 1 second 1Hz 1 Output Remote Input e Switched dc logic signal 6V dc 60mA nominal short circuit pro tected non isolated Watlow DIN a mite power controller compatible 2 Output Switched dc logic signal 6V dc 60mA nominal short circuit pro tected non isolated Watlow DIN a mite amp power controller compatible Electromechanical relay Form A 2A 9 30V dc or 240V ac with out contact suppression Remote Input Option A only Solid state relay Form A 0 5A 24 to 264V ac without contact suppression Off state output impedance 31MQ Remote Input Option A only Output Cycle Time Switched dc and solid state relay 5 0 second default 0 1 second minimum Electromechanical relay 30 0 second default 5 0 second minimum Line Voltage Power e 100 240V ac 10 15 85 264V ac 50 60Hz 5 e 24 28Vx ac dc 10
63. rfestigkeit EN 61000 4 11 1994 St rfestigkeit gegen Spannungsabfall kurze Unterbrechungen und Spannungsschwankungen EN 61000 3 2 1995 mit A1 3 1999 Harmonische Stromemissionen EN 61000 3 3 1995 mit A1 1998 Spannungsfluktationen und Flimmern 73 23 EEC Niederspannungsrichtlinie EN 61010 1 1993 mit A1 1995 Sicherheitsanforderungen f r elektrische Ger te f r Messungen Kontrolle und Laborgebrauch Teil 1 Allgemeine Anforderungen Declara que el producto siguiente Espanol Designaci n Serie 935 N meros de modelo 935 A o B 1C C D o K 0 o 1 Cualesquiera cuatro letras o n meros Control de temperatura Categoria de instalaci n Il Grado de contaminaci n II Voltaje nominal 100 a 240 V CA o 24 a 28 V x CA o CD Frecuencia nominal 50 o 60 Hz Consumo de energ a nominal 6 VA m ximo Clasificaci n Cumple con los requisitos esenciales de las siguientes Directrices de la Uni n Europea mediante el uso de las normas aplicables que se muestran a continuaci n para indicar su conformidad 89 336 EEC Directriz de compatibilidad electromagn tica EN 61326 1997 CON A1 1998 Equipo el ctrico para medici n control y uso en laboratorio Requisitos EMC Inmunidad industrial Emisiones Clase A EN 61000 4 2 1996 con A1 1988 Inmunidad a descarga electrost tica EN 61000 4 3 1997 Inmunidad a campo radiado EN 61000 4 4 1995 Inmunidad a incremento repentino r pidas fluctuaciones el ctricas trans
64. roblem with your Watlow controller review all configuration informa tion to verify that your selections are consistent with your application inputs outputs alarms limits etc If the problem persists after checking the above you can get technical assistance by calling your local Watlow representative see back cover of this manual or in the U S dial 1 507 454 5300 For technical support ask for an Applications Engineer Please have the following information available when you call Complete model number All configuration information User s Manual Diagnostic menu readings Warranty and return information is on the inside back cover of this manual Your Comments Your comments or suggestions on this manual are welcome Please send them to the Tech nical Literature Team Watlow Winona 1241 Bundy Boulevard P O Box 5580 Winona Minnesota 55987 5580 U S Telephone 1 507 454 5300 fax 1 507 452 4507 Copyright January 2002 by Watlow Winona Inc with all rights reserved 2190 2 Where to find it Table of Contents o Page Introd uction monsoon n 2 How Keys Work AAA 4 Begin Controlling eene 6 Set Point Change sees 7 Simple Error Response A 8 Software Map Learn sessssseesss 9 Operations Menu Learn ssssss 10 PID Menu Learn cccccccsssssseceeeeeesssseeeeees 12 Configuration Menu Learn
65. rst select Output 1 Then select Output 2 First select the function of Output 1 Heat None Cool Alarm Timer Refer to the table right then select Cool None Heat Alarm Timer the function of Output 2 Alarm None Heat Cool Remote Set Point Heat Cool Front Panel Lock Heat Cool Alarm None Heat Cool Alarm Watlow Series 935A User s Manual 3 e Read or change You can simply Read the normally displayed actual temperature Or e Press and hold G3 to read the set point Or 1 Press and hold and 9 simultaneously for three seconds to move to a software menu 2 Press and hold C13 to display a choice or value 3 While continuing to press G39 press 9 or 9 to choose new data or select a new value 4 Release G3 and the arrow key to complete the change NOTE The normally displayed actual temperature and set point can be altered to show different combinations of actual temperature set point temperature or time in hours minutes or minutes seconds See NITE p 16 4 Watlow Series 935A User s Manual Figure 2 Series 935A Front Panel Functions Seven segment alphanumeric display Shows process value Set point information time or LED 1 Lit when Output 1 is active Shows prompt name or value LED 2 depending on the key combination pressed Lit when Output 2 is active Set Key Gap RDY Configurable to shift between Lit when the process temperature
66. s for 15 seconds after the G key is press Then time displays with the colon flashing If temperature deviates out of the Ready Band less than 340 F or more than 360 F timer countdown will pause but will con tinue 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 indica tor by pressing The Series 935A then automatically shifts to the 75 F idle set point Watlow Series 935A User s Manual 31 Auto tuning Operations Menu Em vi Auto tune Alarm Range Low Alarm Range High Countdown Timer Idle Local Remote PID Configuration NOTE is not visible at factory default N CAUTION Successful Series 935A auto tuning requires 3 oscillations thru the 9096 set point in 85 min or less If the system cannot perform the oscillations in that time the control will revert to the previous PID values NOTE Manual tuning is a slow procedure taking from minutes to hours to obtain optimum value Auto tuning Auto tune automatically sets PID parameters for your system 1 Press and gt for three seconds 2 You ll see MA3 3 Press and hold Gp then select with or CH will flash to indicate auto tun ing Display reverts to normal after auto tuning 4 ENS stops auto tuning Figure 7 Auto tuning the Series 935A Set Point
67. select a value between 00 01 and 99 59 min sec PCOR COR PCO ICH PL ALC A Pt J t jJ P ORT OR PO 0 PA A BP Choose the except Cn F 9 A Auto tune 62 Watlow Series 935A User s Manual 00 01 Default Hidden if i or if S d Always appears Your Settings Notes Watlow Series 935A User s Manual 63 Notes 64 Watlow Series 935A User s Manual About Watlow Winona Watlow Winona is a U S division of Watlow Electric Manufacturing Company St Louis Missouri a manufacturer of industrial electric heating products since 1922 Watlow products include electric heaters sensors controllers and switching devices The Winona operation has been designing solid state electronic control devices since 1962 and has earned the reputation as an excellent supplier to original equipment manufacturers These OEMs and end users depend upon Watlow Winona to provide compatibly engineered controls that they can incorporate into their products with confidence Watlow Winona resides in a 100 000 square foot marketing engineering and manufacturing facility in Winona Minnesota Warranty The Watlow Series 935 is warranted to be free of defects in material and workmanship for 36 months after delivery to the first purchaser for use providing that the units have not been misapplied Since Watlow has no control over their use and sometimes misuse we cannot guarantee against fai
68. t point the heat proportioned effort is 50 The lower the Pb value the higher the gain Proportional Band A range in which a control s proportioning function is active See PID Range The area between two limits in which a quantity or value is mea sured Usually expressed in terms of lower and upper limits Ready Acknowledge A Series 935A countdown timer start choice that pre initiates the timer with a down key press and then starts it with a SET press when the actual temperature is within the Ready Ready Band Thermal area above and below primary set point in which the timer will count down Relay Electromechanical A power switching device that completes or interrupts a circuit by physically moving electrical contacts Not recommended for PID control Remote Set Point A 0 5V dc input from another controller or other source RTD Resistive Temperature Detector A sensor whose resistance in creases with increasing temperature Set Point The desired process value programmed into a control Signal Any electrical transmittance that conveys information Signal OFF A Series 935 timer output Output 2 choice that toggles the out put OFF then ON at the end of the countdown timer cycle for a period equal to the signal time Signal ON A Series 935 timer output Output 2 choice that toggles the out put ON then OFF at the end of the countdown timer cycle for a period equal to the signal time Signal Time Ti
69. ting an instrument to a known value Configuration Menu The second software sub menu of the Series 935A Operations Menu provides a location to set inputs ranges output types alarm type timer function failure mode and lockout types Control Mode The method of control i e ON OFF time proportioning PI PID or manual Cycle Time Time required for a control to complete one ON through OFF cycle Dead Band Adjusts the effective cool set point above the primary set point by the dead band value in degrees In cool heat applications dead band prevents continuous cool output action by creating a buffer between heating and cooling output action Delay OFF A Series 935A timer output Output 2 choice that turns the out put OFF at the end of the countdown timer time Delay ON A Series 935A timer output Output 2 choice that turns the out put ON at the end of the countdown timer time Derivative Limits the rate of change of the process to eliminate overshoot in slow or lagging loads de ra Deviation Alarm An offset value which tracks the set point Process changes be yond this value register an alarm condition DIN a mite Watlow family of DIN rail mounted SCR power controllers Droop The difference between the set point and actual values once the system stabilizes 46 Watlow Series 935A User s Manual Hysteresis A change in the process variable required to re energize the control or alarm output Idle Set
70. to 92131 make FY and choices then Make EI and choices then Scale the 0 5V dc input with and E Go to B and choose SEF Go to the Operations Menu So choose SA oo Roo M Output 1 d t I Select Remote Set Point for Output 1 Local Remote Local set point active F EH Remote set point active e Remote Set Point is scaled by and ES e OV input results in a set point of Ge e 5Vinputresults in a set point of BRETT e Adjust and to match your input to desired set point adjustment e The Remote Set Point will display instead of Primary Set Point e Auto tune always uses the Primary Set Point e Deviation Alarm uses the active Set Point Figure 5 Remote Set Point Wiring See p 42 45 for more wiring information IN OT1 OT2 POWER S2 S1 1 213 4 7 GO o o o 5 6 8 o o o Remote Set Point 10KQ input impedance NOTE Sensor required on Terminals 1 and 2 AN WARNING All wiring and fusing must conform to local and national electric codes Contact local authorities for further information Failure to comply with electric codes could result in injury or death or damage to property 22 Watlow Series 935A User s Manual 8 Set Up Front Panel Lockout Configuration Menu Input Type Celsius Fahrenheit Input Range Low Input Range High annm Output 1 Function Output 2 Function Display Default Failure Mode Timer Function
71. to 5 00V dc Allow 10 seconds for sources to stabilize Press and hold Gi33 Press 9 or 9 until appears Release Gap 3 Press G3 shall be displayed 4 Set the mV source to 0 00 mV dc set voltage source to 0 00V dc Allow 10 seconds for sources to stabilize Press and hold Gap Press gt or 9 until appears Release Gap 5 Press shall be displayed 6 Set the MV source to 0 00 mV if using a temperature compensator Set calibrator to 32 F 0 C Set voltage source to 0 00V Allow 10 seconds for sources to stabilize Press and hold Gi Press B or 9 until is displayed Release Gap Calibration RTD Equipment Required e Precision Resistance Box with 0 01 Resolution 1 Remove thermocouple wires from Terminal 1 and Terminal 2 2 Connect S2 to terminal 1 Connect S1 to Terminal 2 3 Press shall be displayed 4 Connect voltage source to Terminal 3 negative and Terminal 4 positive 5 Set the Decade box to 15 000 set the voltage source to 0 00V Allow 10 seconds for sources to stabilize Press and hold Gi Press gt or 3 until appears Release Gap 6 Press shall be displayed 7 Set the decade box to 380 000 set the voltage source to 5 00V Allow 10 seconds for sources to stabilize Press and hold Gap Press B or until appears Release Gi 8 Press and hold and for 3 seconds to Exit calibration menu Watlow Series 935A User s Manual 35
72. unction Output 2 Function Display Default ALEY Alarm Type EIER Alarm Hysteresis EI Alarm Latch Gum Alarm Silencing Failure Mode Operations Menu Auto tune a v Alarm Range Low WR Alarm Range High PID Configuration Setting Alarms Plan an alarm strategy What do you want to happen when an alarm occurs N Wire the appropriate control output Output 1 or Output 2 and associated switching and annuncia tors See p 42 45 for wiring information 3 Go to the 935A s Configuration Menu fA See p 16 4 Set either Output 1 or Output 2 as the output 5 Set Alarm Type 27S 6 Get alarm hysteresis PEIS 7 Set alarm latching EPJ 8 Get alarm silencing ETM 9 Seta failure mode 34JIB See p 36 37 10 Go to the 935A s Operation Menu See p 10 11 Setthe alarm high and low and points 12 Test and adjust the alarm system 13 Document the alarm settings and system A CAUTION Verify in Table 10 p 25 the alarm state alarm output condition you want before making the Alarm Type 77737 choice Failure to do so could result in damage to equipment and property A WARNING Do not rely on the Series 935A alarms to provide redundant temperature limit control Use correctly specified properly installed temperature limit controls instead Failure to do so could result in injury death or damage to equipment and property See acc
73. uto tuning selects a set of viable proportional integral and derivative values for heat and or cool output Alarm Points and BEID Select the values for the high alarm point and the low alarm point Alarm points dependent on sensor type high and low ranges reside in the Operations Menu for easy access Timer Countdown Time rar Select a countdown time value between 00 00 and 99 59 hours minutes or minutes seconds Time interval choices HAJA and AHH reside in the Configuration Menu for Output 2 Idle Set Point IHS or an adjustable value between and EAA Choose to have the Idle Set Point track BAA or equal the Primary Set Point or select an Idle Set Point value in F or C between the range low and range high values The Idle Set Point is active both before and after the timing sequence The normal or Primary Set Point con trols during the timing sequence Local Remote Set Point BEHEA or E Choose to maintain control with the Primary local Set Point or to enable the Remote Set Point if the Output 1 choice equals Remote Set Point MPSJ Go to the PID Menu MJE Choose to proceed to the PID Menu Go to the Configuration Menu 92131 Choose to proceed to the Configuration Menu The table on the next page presents this information in graphic form NOTE Not every prompt listed here or on p 11 in the Operations Menu will appear in your unit Prompts vary with lockout function and output set up Whether or not prompts appear in the Oper
74. y starts timer sequence Start Timer ED Function m A Ready Acknowledge key starts timer sequence must be r D pressed once inside the Ready Band to start timer at the normal display Timer Ready Band p M Timer starts immediately on control power up without waiting for the aS Ready Band temperature or a 9 press See p 61 RDY aV SP AE RDY RDY Q 0 Disables Ready feature The RDY front panel LED is lit inside Ready Band for all Timer Start functions Sets the signal time Signal Time from 00 01 to 99 59 min sec to run after Timer Operations Menu IHH H Timer Function OFF 041 E idLE Idle Set Point 1 Countdown Tim 9959 i Idle is set point used when not timing f Trac selected Idle is the same as Set Point The Set Point value controls the process during the Timer sequence Watlow Series 935A User s Manual 29 0 4 Setting the Countdown Timer 30 Configuration Menu Input Type Celsius Fahrenheit Input Range Low Input Range High Output 1 Function Output 2 Function FRET Display Default Alarm Type Alarm Hysteresis Ci wi Timer Function Stet Start Timer EZE V Timer Ready Band ot wi Signal Time Operations Menu Auto tune mum wi Countdown Timer REIS Idle SU RO Ne a 10 11 12 13 14 Plan a timer strategy Wire the Output 2 c

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