Watlow Series 935A - Manual (Page 32)

3 0 Watlow Series 935A User’s Manual
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1. Plan a timer strategy.
2. Wire the Output 2 control output, associated switching devices and annunciators. See p. 42-45.
3. Go to the 935A’s Configuration Menu [CnFG] .
4. Choose the Output 2 [`Ot2] function as time; hrs:min [thM] , or time; min:sec [tMS] .
5. Choose a display default [dISP] (see page 16):
• Actual Temperature only [``Ac]
• Actual; Set Point [AcSP]
• Actual; Time [Acti]
• Time; Actual [tiAc]
• Time; Set Point [tiSP]
6. Choose a Timer Output Function [tIM] :
• Delay ON [dLon]
• Delay off [dLoF]
• Signal ON [sgon]
• Signal off [sgoF]
7. Choose a start timer [Strt] function; either immediate [IMd] , ready band [`rdY] , Ready
Acknowledge [rdYA] , or Power [PWr] .
8. If you chose [`rdY] or [rdya] , then select a ready band [`rdy] value.
9. If you chose [SGon] or [sgof] , then select a signal time [``St] value.
10. Go to the 935A’s Operation Menu.
11. Set the countdown time [tMr] .
12. Choose the idle set point [IdLE] to track [trAc] the primary set point, or select a separate idle set
point value between the range high [``rh] and range low [``rL] values.
13. Run the system, and test the timer start with a ß press.
14. Document the timer settings and system.
Configuration Menu
[``In]
Input Type
[`C_F]
Celsius/Fahrenheit
[``rL]
Input Range Low
[``rh]
Input Range High
[`Ot1]
Output 1 Function
[`Ot2]
✓
Output 2 Function
[dISP]
✓
Display Default
[ALty]
Alarm Type
[AhYS]
Alarm Hysteresis
•
•
•
[tIM]
✓
Timer Function
[Strt]
✓
Start Timer
[`rdY]
✓
Timer Ready Band
[``St]
✓
Signal Time
Operations
Menu
[`Aut]
Auto-tune
[tMr]
✓
Countdown Timer
[IdLE]
✓
Idle
Setting the Countdown Timer