Watlow Series 942 - Manual (Page 24)

Setup, Chapter 4
24
WATLOW Series 942 User's Manual
Setup
SIL
HYS3
LAt1
AL1
Ot3
HYS2
Ot2
HYS1
Ot1
Output 1: Selects the output action for the primary output. Action in response
to the difference between set point and process variable. Select ht (heat) for
reverse acting or select CL (cool) for direct acting.
Range: ht, CL
Default: ht
Hysteresis 1: Selects the switching hysteresis for Output 1 when Pb1 = 0 (ON/
OFF). See Page 29 for the Pb1 parameter.
Range:
1
°
F - 999
°
F 0.1
°
F - 99.9
°
F Default: 3
°
F
1
°
C - 540
°
C 0.1
°
C - 54.0
°
C
1Unit - 999 Units 0.1 Units - 99.9 Units
Output 2: Selects the output action for the secondary output. Action in re-
sponse to the difference between set point and process variable. Select ht
(heat) for reverse acting or select CL (cool) for direct acting. This parameter only
appears if you have a secondary output. If Ot1 = ht: Range: CL, no
If Ot1 = CL: Range: ht, no
Default: CL
Hysteresis 2: Selects the switching hysteresis for Output 2 when 0 = (ON/OFF)
under the Pb 2 parameter. See Page 29 for the Pb2 parameter. This parameter
only appears if you have a secondary output.
Range:
1
°
F - 999
°
F 0.1
°
F - 99.9
°
F Default: 3
°
F
1
°
C - 540
°
C 0.1
°
C - 54.0
°
C
1Unit - 999 Units 0.1 Units - 99.9 Units
Output 3: Selects Output 3 as an alarm or an event. This parameter only
appears if you have at least one auxiliary output.
Range: AL, Ent, no
Default: AL
Alarm 1: Determines whether the alarm type for Alarm 1 is process or devia-
tion. A process alarm is set at an absolute temperature to prevent over/under-
range. This parameter only appears if you ordered auxiliaries with your unit and
Ot3 = AL. See Chapter 6 for more information on alarms.
Range: Pr, dE
Default: Pr
Latching 1: Selects whether Alarm 1 is latching or non-latching. Latching
alarms must be cleared before the alarm output will reset. Non-latching auto-
matically resets the alarm output when the condition clears. This parameter
only appears if your unit has auxiliary outputs and Ot3 = AL. See Chapter 6.
Range: LAt or nLA
Default: nLA
Hysteresis 3: Selects the switching hysteresis for Output 3 and appears if
Ot3 = AL, and your unit has an auxiliary output.
Range:
1
°
F - 999
°
F 0.1
°
F - 99.9
°
F Default: 3
°
F
1
°
C - 540
°
C 0.1
°
C - 54.0
°
C
1Unit - 999 Units 0.1 Units - 99.9 Units
SIL: Selects alarm silencing (inhibit) for Output 3. This parameter only appears
when AL1 = dE, and Ot3 = AL. For more information see Chapter 6.
Range: On or OFF
Default: OFF