Watlow Series 942 - Manual (Page 25)

Setup, Chapter 4 WATLOW Series 942 User's Manual
25
Setup
Output 4: Selects Output 4 as an alarm (AL) or event (Ent) if Output 4 is an
auxiliary output. Selects Output 4 as retransmit of Process (PrOC) or Set Point
(StPt) if Output 4 is a retransmit output. Hardware must also be present. Scaling of
the retransmit output is determined by rL and rH.
Auxiliary Output:
Range: AL, Ent, no
Default: AL
Retransmit Output:
Range: PrOC, StPt, no
Default: PrOC
Alarm 2: Determines whether the alarm type for Output 4 is process or deviation.
A process alarm is set at an absolute temperature to prevent over/underrange.
This parameter only appears if you ordered auxiliaries with your unit and Ot4 = AL.
Range: Pr, dE
Default: Pr
Latching 2: Selects whether Alarm 2 is latching or non-latching. Latching alarms
must be cleared before the alarm output will reset. Non-latching automatically
resets the alarm output when the condition clears. This parameter only appears if
Ot4 = AL, and if your unit has alarms.
Range: LAt or nLA Default: nLA
Hysteresis 4: Selects the switching hysteresis for Auxiliary 2 and appears if
Ot4 = 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
RTD: Selects the RTD calibration curve for RTD inputs. This parameter appears if
In = rtd or rt.d. JIS = 0.003916
Ω
/
Ω°
C, DIN = 0.003850
Ω
/
Ω°
C.
Range: din or JIS Default: din
Program Type: Selects the program type as time based (ti) or ramp rate (rAtE) in
degrees per minute. Changing this parameter erases all profile steps and
defaults them to an End step.
Range: ti (time based) or rAtE (ramp rate)
Default: ti
Guaranteed Soak Deviation: Guarantees the actual temperature is being con-
trolled within a window around the set point. If this deviation is exceeded, the time
clock stops and the lower display alternately flashes gSd and the current param-
eter until the process variable returns within the window. See Chapter 5 for more
information on the guaranteed soak deviation parameter.
Example: A guaranteed soak deviation of 3 equals a
±
3
°
deviation about the
current set point.
0 = Guaranteed soak deviation not active. >0 = Active guaranteed soak
Range:
0
°
F - 99
°
F 0.0
°
F - 9.9
°
F Default: 0
°
0
°
C - 55
°
C 0.0
°
C - 5.5
°
C
0 - 99 Units 0.0 - 9.9 Units
Power Outage: Selects the profile status upon power restoration following a
power loss. By selecting continue (Cont), your profile continues running from
where it was interrupted. HOLd maintains the last set point prior to power loss.
Abort (Abrt) quits running the profile, displays OFF in the lower display, and turns
off all outputs. When Abrt or HOld are selected, the lower display alternately
flashes Pout and the current parameter. rSET (Reset) causes a start from the
beginning of your profile. Press the HOLD/RUN key to clear.
Range: Cont (Continue), HOLd, Abrt (Abort), rSET (Reset)
Default: Cont
Ot4
Pout
LAt2
PtYP
AL2
HYS4
rtd
gSd