Series 935A User’s Manual Temperature Controller with Countdown Timer TOTAL CUSTOMER SATISFACTION 3 Year Warranty Registered Company Winona, Minnesota USA U.S. English 0600-0015-0000 Rev L January 2002 Supersedes: 0600-0015-0000 Rev K 1241 Bundy Boulevard, P.O. Box 5580, Winona, Minnesota USA 55987-5580 Phone: +1 (507) 454-5300, Fax: +1 (507) 452-4507, http://www.watlow.com $15.
ç Safety Information in this Manual Safety Alert Note, caution and warning symbols appear throughout this book to draw your attention to important operational and safety information. CAUTION or A “NOTE” marks a short message to alert you to an important detail. WARNING A “CAUTION” safety alert appears with information that is important for protecting your equipment and performance.
Where to find it… Table of Contents Item ............................................................. Page Introduction ........................................................ 2 How Keys Work ................................................. 4 Begin Controlling ................................................ 6 Set Point Change ............................................... 7 Simple Error / Response .................................... 8 Software Map; Learn .........................................
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 panel-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.
Figure 1 - Series 935A Input and Output Overview Output 1 1 2 Single Input RDY Output 2 SET Dual Output Single Input Type J, K, T, N, S, E Thermocouple, 1° RTD, or 0.1° RTD Output 1 Switched dc SET Heat Cool Alarm Output 2 Electromechanical Relay, Switched dc or Solid-state Relay Remote Set Point NONE Front Panel Lockout None 0 15 45 NONE 30 Heat • The function of Output 1 determines the options available for Output 2. • First select the function of Output 1.
Read or change You can simply: • Read the normally displayed actual temperature, or… • Press and hold ß to read the set point, or… 1. Press and hold . and , simultaneously for three seconds to move to a software menu. 2. Press and hold ß to display a choice or value. 3. While continuing to press ß, press . or , to choose new data or select a new value. 4. Release ß and the arrow key to complete the change.
Figure 2 - Series 935A Front Panel Functions Seven-segment alphanumeric display: LED 1: Lit when Output 1 is active. • Shows process value, set point information, time, or • Shows prompt name or value, depending on the key combination pressed. LED 2: Set Key: ß RDY: • Configurable to shift between normally-displayed value and set values. See [dISP], p.16. Lit when the process temperature is inside the timer ready band. Lit when Output 2 is active. • Clears a latched alarm. 1 2 RDY Up / .
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. • If you see an error, go to p. 8.
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 [dISP]. 1. Press and hold ß. 2. Press one of the arrow keys to alter the set point either upward or downward. 3. Release ß to complete the change.
Respond to a simple error If You See An Error Code: 1. Be aware that most errors 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 [`Er1] [`Er2] [`Er3] [`Er4] [`Er5] [````] Reversed thermocouple connection + to –. Change the sensor leads on Terminals 1 and 2. Sensor type mismatch or open RTD. Go to {`In} prompt, check selection (see p. 20), or check RTD, replace as necessary.
Learn the Software Map Software Organization • The Series 935A has three primary menus in addition to a normal display. • 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 . and , keys simultaneously for three seconds. • Operations, p. 10 PID, p. 12 Configuration, p.
Learn the Operations Menu The Series 935A Operations Menu is the first menu you encounter when you press the . and , keys simultaneously for three seconds. The Operations Menu provides a location to initiate the following actions or complete the following tasks: • Auto-tune [`Aut]: Start or stop the auto-tuning process. Auto-tuning selects a set of viable proportional, integral, and derivative values for heat and/or cool output.
Table 4 - Operations Menu Overview To enter the Operations Menu, press the . and , keys simultaneously for three seconds. Auto-tune - Start the auto-tune action to automatically select a set of viable PID values; [tunE] will flash during auto-tuning. [``no] [`YES] [`Aut] NO YES Alarm Low - Select a low alarm point, adjustable between Off, Range Low and Alarm High. [`AhI] [`ALO] Alarm High Alarm High - Select a high alarm point, adjustable between Alarm Low and Range High, or OFF.
Learn the PID Menu Choose the PID Strategy You may rely solely on the Auto-tune [`Aut] 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 [``db] and calibration offset [`CAL] values manually. The Series 935A PID Menu is the first sub-menu you encounter after moving to the Operations Menu.
Set the PID Menu Values • Proportional Band, Heat and Cool [Pb`h] and [Pb`c]: 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 [Pb`h] or [Pb`c] = 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 [hYSh] and [hYSc]: For use with on/off control only.
Learn the PID Menu - Details Table 5 - PID Menu Overview Set-Up Heat Proportional Band Heat - Select a heat proportional band value. [```0] [`999] [```0] [`555] [``)0] [Pb`h] 0°F to 999°F, or 0°C to 555°C, or Hysteresis Heat - Select a heat ON/off control switching hysteresis. [```1] [`999] [```1] [`555] [``)1] [hySh] 1°F to 999°F, or 1°C to 555°C, or [99(0] 0.0°F to 999.0°F, or [99(0] 0.1°F to 999.0°F, or [``)0] [55%0] 0.0°C to 555.0°C [``)1] [55%0] 0.1°C to 555.
Set-Up General Integral Function - Select an integral value. [``It] [`)00] [9(99] 0.00 to 99.99 minutes/repeat Derivative Function - Select a derivative value. [``dE] [`)00] [`(99 0.00 to 9.99 minutes Calibration Offset - Select a calibration offset value. [`CAL] [-999]] [9999] [-9(9] [99(9 -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.
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: 1. Go first to the Operations Menu by pressing . and , simultaneously for three seconds. 2. Scroll through the Operations Menu with , until you see the [CnFg] prompt. 3. While holding ß to display [``no], choose [`YES] with . or ,. 4. Release ß to see the first [CnFg] prompt, [``In].
NOTE: Access to Configuration Menu varies with lockout function. See p. 19. Alarm Hysteresis - Choose alarm switching band. [```1[ [`999] [```1] [AhyS] 1°F to 999°F, or [`555] 1°C to 555°C, or [``)1] [99(0] 0.1°F to 999.0°F, or [``)1] [55%0] 0.1°C to 555.0°C Alarm Latch - Choose latching or non-latching alarms. A latching alarm requires a ß press to clear it after the alarm condition clears. [``no] [`YES] [`LAt] NO YES Alarm Silencing - Choose to silence alarms on startup, or not.
Using Lockout Functions Configuration Menu [``In] The Series 935A offers three different security, or “lockout,” options. Set up one or all three lockout options in the Configuration Menu. Input Type [`C_F] Celsius/Fahrenheit [``rL] ∫ • Front Panel Lock [`FPL] uses a control output as an input for an external hardware switch; it requires wiring, see p. 23. Choose Front Panel Lock [`FPL] as an exclusive Output 1 choice. Output 2 offers heat, cool, or alarm.
Table 7 - Series 935A Lockout Options Three Lockout Options [`fpl] 1 2 RDY [slOC] [````] = No Lockout [PCOA] = Fully Locked SET = Operator's Perspective SP Front Panel Lockout Set Point Lockout Security Tag [`Ot1] [SLOC] [`tAG] [`fpl] [``no] [`YES] [P```] [`C``] [``O`] [[```A] 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 Men
Setting Inputs and Outputs Configuration Menu [``In] ✓ Input Type ✓ [`C_F] Key Input/Output Set-up Information • All initial input and output set-up occurs in the Configuration Menu. • The 935A requires a thermocouple or RTD input connection to the S1 and S2 Terminals, including when using the remote set point [`rSP] option. • Remote Set Point [`rSP] is a second input, wired to OT1 Terminals 3 and 4.
Note: Access to Configuration Menu varies with lockout function. See p. 19. Table 8 - Setting Inputs and Outputs Input Type - Choose sensor type. [``In] [```J] [```H] [```t] [```n] [```E] [```S] [`rtd] J t/c T t/c N t/c E t/c 1.0° RTD 0.1° RTD Input Range Information J t/c: K t/c: T t/c: N t/c: S t/c: E t/c: 1° RTD (DIN): 0.1° RTD: K t/c 32 -328 -328 32 32 -328 -328 -99.9 to to to to to to to to 1382°F 2282°F 662°F 2282°F 2642°F 1470°F 1292°F 999.
Set Up Remote Set Point Input Configuration Menu [``In] To Set Up Remote Set Point… Input Type 1. Wire the control per the example below and the information on p. 42-45. [`C-F] 2. Go to [CnfG], make [`in] and [`c_f] choices, then Celsius/Fahrenheit 3. Make [``In] and [`C_F] choices, then [``rL] ✓ 4. Scale the 0-5VÎ (dc) input with [``rL] and [``rh]. Input Range Low 5. Go to [`Ot1], and choose [`rSP]. [``rh] 6. Go to the Operations Menu; [`L-r], choose [```r].
Set Up Front Panel Lockout Configuration Menu [``In] Input Type [`C_F] Celsius/Fahrenheit [``rL] Input Range Low 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 [CnFG], then [`Ot1], and choose [`FPL].
Learning Alarms Configuration Menu Input Type 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 [``hI] or [``LO] flashing on the main display. [`C_F] • 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.
Table 10 - Alarm Functions Deviation Alarm [ALtY] Alarm Type Process Alarm [dEnc] [dEno] [Prnc] [Prno] Deviation normally closed Deviation normally open Process normally closed Process normally open Non-Alarm State LED off Alarm Output: Alarm State LED on Alarm Output Status: Silenced-Alarm State LED off Alarm Output Status: Power-Off State LED off Alarm Output Status: Alarm High Region Function [AhYS] A deviation alarm tracks set point.
Setting Alarms Configuration Menu 1. Plan an alarm strategy. What do you want to happen when an alarm occurs? [``In] 2. Wire the appropriate control output, Output 1 or Output 2, and associated switching and annunciators. See p. 42-45 for wiring information. [`C_F] 3. Go to the 935A’s Configuration Menu [CnFG]. See p. 16. Celsius/Fahrenheit 4. Set either Output 1 [`Ot1] or Output 2 [`Ot2] as the [ALM] output. [``rL] 5. Set Alarm Type [ALty]. Input Range Low 6. Set alarm hysteresis [AhYS].
Table 11 (below) and Table 10 (p. 25) illustrate the Series 935A alarm features. Table 11 - Alarm Functions [`lat] [``no] Latching alarm An unlatched alarm self-clears when actual temperature returns to within the safe area. [`sIl] [``no] [`yes] SET A latched alarm requires the operator to press the ß key to clear after the actual temperature returns to within the safe area.
0 15 45 Learn the Countdown Timer 30 Configuration Menu [``In] Input Type [`C_F] Celsius/Fahrenheit [``rL] Input Range Low [``rH] Input Range High • The timer requires Output 1 to work as either a heat or as a cool output. • The 935A timer is a function of Output 2, which, depending on your unit’s model number, can be either switched dc, electromechanical relay, or solid state relay. • Hours: minutes (hh:mm) or minutes:seconds (mm:ss) choices reside in Output 2 [`Ot2].
Table 12 - Series 935A Timer Functions/Settings Configuration Menu Choose time in hr:min or min:sec. Output 2 Timer Output Function; Choose one of four possible output actions for the end of the timer / time periods. Delay ON Delay OFF Output 2 is ON before timing; OFF during timing; ON after timing. Output 2 is OFF before timing; ON during timing; OFF after timing. Timer set-up available only when = or Signal ON Output 2 is OFF before & during timing; ON after timing; then OFF.
0 15 45 Setting the Countdown Timer 30 Configuration Menu 1. Plan a timer strategy. [``In] 2. Wire the Output 2 control output, associated switching devices and annunciators. See p. 42-45. Input Type 3. Go to the 935A’s Configuration Menu [CnFG]. [`C_F] 4. Choose the Output 2 [`Ot2] function as time; hrs:min [thM], or time; min:sec [tMS]. Celsius/Fahrenheit 5.
0 15 45 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 indication that the bread is done. Recommended Control A Series 935A-1CD0-000G control.
Auto-tuning Operations Menu [`Aut] ✓ Auto-tune Auto-tuning Auto-tune automatically sets PID parameters for your system. [`ALO] 1. Press . and , for three seconds. Alarm Range Low 2. You'll see [`Aut]. [`Ah1] 3. Press and hold ß, then select [`YES] with . or ,. [tune] will flash to indicate auto-tuning. Display reverts to normal after auto-tuning. 4. [`Aut] = [``no] stops auto-tuning.
Fine Tune the PID Settings PID Menu Set up Heat: [Pb`h] ✓ Proportional Band [hySh] Hysteresis [Ct`h] Cycle Time [``db] ✓ ✓ ✓ Dead Band Set up Cool: [Pb`c] ✓ Proportional Band [hySc] Hysteresis [Ct`c] ✓ ✓ Cycle Time Set up General: [``It] Integral [``dE] Derivative [`CAL] ✓ ✓ 1. Set [Pb`h] and [Ct`h] in degrees. 2. If Proportional Band Heat [Pb`h] = 0, Set Hysteresis Heat [HySh]. The Series 935A will provide on/off control with the hysteresis value selected, and no proportioning action.
Calibrating the 935A Calibration Menu [tc50] ✓ tc50 [tc00] ✓ tc00 [``tc] ✓ tc [r`15] ✓ r15 [r380] ✓ Calibration requires a precision millivolt source with thermocouple compensation, an adjustable 0-10 volt source, and a decade resistance box. • [tr50] and [tr00] calibrate the thermocouple span. • [``tc] calibrates the ambient compensation. • [r380] and [r`15] calibrate the RTD span. • 0V is required when calibrating [tc00] and [r`15] for remote set point 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. • Precision millivolt source, 0-50mV min. range, 0.01mV resolution. Set Up: 1. Connect 100-240Å (ac), or 24-28V‡ (ac/dc) to Terminal 7 and Terminal 8. 2. Connect the millivolt source to Terminal 1 negative and Terminal 2 positive. 3.
Errors and Troubleshooting Configuration Menu [``In] Input Type [`C_F] Celsius/Fahrenheit Set up an input failure operation mode at the [FAIL] prompt in the [CnFG] menu; choose bumpless transfer [bPLS] for smooth output action transition to percent power control, or select a percent power output value. [FAIL} [bPLS] [``rL] Input Range Low [``rh] Input Range High [`Ot1] Output 1 Function Bumpless Transfer when errors occur, the control output will continue at a percent output learned while stable.
Table 13 - Error Codes and Actions Display [`Er1] Probable Cause Reversed thermocouple connection + to –. Recommended Action Change the sensor leads on Terminals 1 and 2. A-D under flow [`Er2] Sensor type mismatch or open RTD. Go to In prompt, check selection (see p. 20), or check RTD, replace as necessary. Sensor under range [`Er3] Sensor type mismatch. Go to In prompt, check selection (see p. 20). Sensor over range [`Er4] Open Thermocouple, bad connection, or broken wire.
Mounting Figure 9- Panel Cut-out Dimensions Panel Thickness 1.5 mm to 9.7 mm (0.060 to 0.38 in.) 12.7mm (0.500 in.) 45.0mm (1.772 in.) +0.6mm, -0.0mm (+0.024 in., -0.000 in.) 22.2mm (0.874 in.) +0.3mm, -0.0mm (+0.012 in., -0.000 in.) 12.7mm (0.500 in.) Figure 10- Mounting Layout for Knockouts Layout for four 1/32 DIN knockouts with punch and die 34.9mm (1.374 in.) 57.7mm (2.272 in.) Punch and Die Supplier Greenlee Textron, Inc., Phone: 1-800-435-0786.
1 2 Dimensions Figure 11- Series 935A Dimensions 44.96mm (1.770 in.) 53.1mm (2.09 in.) 29.0mm (1.14 in.) Panel Cutout Panel Thickness 1.5mm to 9.7mm (0.060 to 0.38 in.) Maximum Overall Depth 114.3mm (4.50 in.) 101.6mm (4.00 in.) 22.10mm (0.870 in.) 12.7mm (0.50 in.
Installation Procedure 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. 4. 5. 6. Figure 12- Mounting, Case Top View and Collar Cross Section. 0 to 0.483 mm space (0 to 0.019 in.
Terminal Block Removal 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.
Wiring a 935A Figure 15 - Wiring the Series 935A ∫ 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.
∫ 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. Output 1 Wiring Output 2 Wiring Internal Circuitry IN OT1 S2 S1 – + – + 1 2 3 4 +5.
System Wiring Examples Figure 16 - Series 935A System Wiring Examples ∫ 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.
Figure 17 - Series 935A Ladder Diagram Wiring Example ∫ 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.
Glossary Alarm A condition, generated by the controller, indicating that the process 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.
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.
Index Auto-tune [`Aut] Alarms Alarm High [`AhI] Alarm Low [`ALO] Alarm Type [AltY] Clearing Alarms Deviation [dEnc] , [dEno] Hysteresis [AhYS] Latch [`LAt] Learning Process [Prnc] , [Prno] Setting Silencing [`SIL] Bumpless Transfer [bPLS] Calibration Factory Restore [`rST] Calibration Offset [`CAL] Celsius / Fahrenheit [`C_F] Clearing Alarms Configuration [CnFG] Cycle Time Heat [Ct`h] Cool [Ct`c] Dead Band [``db] Derivative [``dE] Dimensions DIN-a-mite® compatibility Display Default [dISP] Errors Fail
Set Point Change Local [`L-r] Lock [SLOC] Range High [``rh] Range Low [``rL] Remote Set Point [`rSP] Remote [`L-r] Silencing Alarms Software Maps Easy Advanced Specifications Terminal Block Removal Timer Countdown [tMr] Delay off [dLoF] Delay on [dLon] Function [tIM] Hours/Minutes [thM] S 7 10 18 20 20 22 22 27 9 55-62 50 T 41 10, 28-31 17, 28 17, 28 17, 28 17, 28 Idle [IdLE] Minutes/Seconds [tMS] Ready Band [`rdY] Signal off [SGof] Signal on [SGon] Signal Time [``St] Start Timer [Strt] Immediate [IMd]
Specifications Specifications (2191) RTD Resolution Platinum 0.00385 Curve 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. 1° Agency Approvals • UL/C-UL 508 Listed, File #E102269. • IP65/NEMA 4X2 rated front panel.
Ordering a 935A Ordering Information (2192) 935 -1C Single thermocouple or RTD (DIN) input, dual output, singlie display temperature control with time function and four digit display - 0 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 DIN-a-mite® power controller compatible) (Optionally used for remote set point input; or fro
Declaration of Conformity Series 935 WATLOW Winona, Inc.
Notes Watlow Series 935A User’s Manual 53
Notes 54 Watlow Series 935A User’s Manual
935A Software Map Operations Menu Prompt Range [``SP] [``rL] [``rh] Primary Set Point Select a value, adjustable between Input Type Range Low and Input Type Range High. [`Aut] [``no] [`YES] Auto-tune Choose YES to Autotune the 935A. [`ALO] [`Ah1] Alarm Low Select a value, adjustable between Range Low and Alarm High. [`Ah1] [`RL0] Alarm High Select a value, adjustable between Alarm Low and Range High.
Operations Menu Prompt Range [`L-r] [```L] [```r] Local/Remote Set Point Choose Local or Remote Set Point. Default L Hidden if * [`tA9] = [`O``]; or if [`Ot1] ≠ [`rSP] [`Pid] [``no] [`YES] no [`tA9] = [P```] PID Menu Choose YES to move to the PID Menu. [CnFg] [``no] [`YES] no The front panel is locked out. Configuration Menu Choose YES to move to the Configuration Menu.
PID Menu Prompt Range Default Hidden if * [Ct`h] [``)1] [`6)0] Cycle Time Heat [``%0] [`6)0] or if 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). [Pb`h] = 0 1.
Prompt Range Default 5.0 seconds Hidden if * [Ct`c] [``)1] [`6)0] Cycle Time Cool [``%0] [`6)0] or if 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). [Pb`c] = 0 [``It] [``)0] [9(99] Integral Function Select a value, adjustable between 0.0 and 99.99 minutes/repeat. [`tA9] = [P```]; or if [Pb`c] is hidden 5.
Prompt Range [``In] [```J] J t/c Input Type [```H] K t/c Default Hidden if * J [`tA9] = [``C`] F [`tA9] = [``C`] Type J range low value [`tA9] = [``C`] Type J range high value [`tA9] = [``C`] heat [`tA9] = [``C`] Your Settings [```t] T t/c [```N] N t/c [```E] E t/c [```S] S t/c [`rtd] 1.0°RTD Configuration Menu [`rtd] 0.1°RTD [`C_F] [``°F] [``°C] Celsius/Fahrenheit Choose to indicate temperature in °Fahrenheit or °Celsius.
Prompt Range [`Ot2] [hEAt] [COOL] Output 2 Function [ALM] [`thM] Default Hidden if * none [`tA9] = [``C`] Ac [`tA9] = [``C`] Prnc [`tA9] = [``C`]; [tMS] [nonE] Choose Heat, Cool, Alarm, Timer (Hrs:Min), Timer (Min:Sec) or No output action. [dISP] [``Ac] [AcSP] Display Default [Act1] [t1Ac] Configuration Menu [t1SP] Choose the primary (last 2 characters) and secondary (first 2 characters) Default displays. Press ß to toggle to the secondary display for 15 seconds.
Prompt Range [`LAt] [``no] [`YES] Alarm Latch Choose YES for a Latching Alarm. Default no Hidden if * Your Settings [`tA9] = [``C`]; or if [`Ot1] and/or Configuration Menu [`Ot2] ≠ [ALM] [`SIL] [``no] [`YES] Alarm Silencing Choose YES for a Silenced Alarm on startup or silencing during operation. no [`tA9] = [``C`]; or if [`Ot1] and/or [`Ot2] ≠ [ALM] [FAIL] [bPLS] [-100] Bumpless [`tA9] = [``C`]; Input Failure Mode [`100] or if Choose Bumpless Transfer or Percent Power.
Prompt Range [``St] [```1] [9( 9] Signal Time If [t1M] = [SGon] or [SGof], then select a value between 00:01 and 99:59 min:sec. [SLOC] [``no] [`YES] Set Point Lockout Choose YES to Lock the Primary Set Point. [`tA9] [PCOA] [`COA] Lockout Tag [PCO`] [`CO`] [PC`A] [`C`A] [PC``] [`C``] [P`OA] [``OA] Configuration Menu [P`O`] [``O`] [P`A`] [```A] [P```] [````] Choose the menus/functions that will not be displayed, and therefore cannot be changed.
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.
How to Reach Us Your Authorized Watlow Distributor: 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. 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.