Watlow Electric 935A Series, User Manual

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Watlow Series 935A User’s Manual
Setting Inputs and Outputs
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.
• Indication of °C or °F units of measure occurs only in the [`C_F] prompt.
• Sensor input type minimum and maximum range (see p. 51) is further defined with Range Low
[``rL] and Range High [``rh] to set the working span of set points and remote set point scal-
ing.
• Output 1 and Output 2 configure the prime functions of the Series 935A, they are the “golden”
prompts.
• Output 1 must be heat or cool to use Output 2 as a timer.
• Remote Set Point [`rSP] enables Output 1 to act as an input for 0-5 Î (dc) from another con-
troller or a transmitter.
• Front Panel Lock [`FPL] requires an external switch and 62
Ω
0.5 watt resistor wired in parallel
on Output 1. Switch open = unlocked; closed = locked. See p. 23.
• Output 2 sets timer interval in hours:minutes [thM]
or minutes:seconds [tMS] .
• Display Default [dISP] lets you choose the primary (last 2 characters) and secondary (first 2
characters) default displays. Press ß to toggle to the secondary display for 15 seconds.
[``Ac]
= Normal Display: Actual Temperature
Secondary: None
[AcSP]
= Normal Display: Set Point Temperature
Secondary: Actual Temperature
[Acti]
= Normal Display: Time Remaining
Secondary: Actual Temperature
[TiAc]
= Normal Display: Actual Temperature
Secondary: Time Remaining
[tiSP]
= Normal Display: Set Point Temperature
Secondary: Time Remaining
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
[`LAt]
Alarm Latch
[`SIL]
Alarm Silencing
[FAIL]
Failure Mode
[tIM]
Timer Function
[Strt]
Start Timer
[`rdY]
Timer Ready Band
[``St]
Signal Time
[SLOC]
Set Point Lockout
[`tAG]
Lockout Tag