Setup, Chapter 4
19
WATLOW Series 945 User's Manual
Operation
Reset/Integral1: A reset (integral) control action for Output 1 or Output 2 automati-
cally eliminating offset, or "droop," between set point and actual process temperature.
Will not appear if your unit does not have a secondary output. rE1/It1: Will not
appear if Pb1 = 0. rE2/It2: Will not appear if Pb2 = 0, Ot2 = no, or Ot2 is the same
configuration as Ot1. Either reset (rE) or integral (It) will appear depending on how the
dFL parameter is set in the Calibration menu.
See Appendix II.
If dFL = US:
Range: 0.00 to 9.99 repeats/minute
Default: 0.00
If dFL = SI:
Range: 00.1 to 99.9 minutes per repeat
Default: 0.00
Rate/Derivative 1: The rate (derivative) function for Output 1 or Output 2. Rate or
derivative is used to eliminate over shoot on start up, or after the set point changes.
rA1/dE1: Will not appear if Pb 1 = 0. rA2/dE2: Will not appear if your unit does not
have a secondary output, Pb2 = 0, Ot2 = no, or Ot2 is the same value as Ot1. Either
rate (rA) or derivative (dE) will appear depending on how dFL is set in the Calibration
menu. If dFL = US or SI: Range: 0.00 to 9.99 minutes Default: 0.00
Cycle Time 1 & 2: Time for a controller to complete one ON/OFF cycle for Output
1or Output 2; expressed in seconds.
Ct1: Will not appear if Pb 1 = 0, or Output 1 is 4-
20mA. Ct2: Will not appear if your unit does not have a secondary output, Pb2 = 0,
Ot2 = no, or Ot2 is the same value as Ot1.
Range: 1 to 60 seconds
Default: 5
Dead Band: The area between Output 1 and 2 where no heating or cooling takes
place in a heat/cool proportional control. Only appears if your unit is set up as a ht/CL
or CL/ht unit. Range: ±0 to 99°F/0 to 55°C/0 to 99 Units; or ±0.0 to 9.9°F/0.0 to
5.5°C/0.0 to 9.9 Units
Default: 0
Alarm 1 Low: Represents the low process alarm or low deviation alarm for Alarm 1.
Will not appear if your unit does not have alarms and AL 1 = no.
If AL 1 = dE:
Range: 0 to -999°F/0 to -999°C/0 to -999 Units
Default: -999°F
If AL 1 = Pr:
Range: rL to A1HI
Default: rL
Alarm 1 High: Represents the high process alarm or high deviation alarm for Alarm
1. Will not appear if your unit does not have alarms and AL 1 = no.
If AL 1 = dE:
Range: 0 to 999°F/0 to 999°C/0 to 999 Units
Default: 999°F
If AL 1 = Pr:
Range: A1LO to rH
Default: rH
Alarm 2 Low: Represents the low process alarm or low deviation alarm for Alarm 2.
Will not appear if your unit does not have Alarm 2 and AL 2 = no.
If AL 2 = dE:
Range: 0 to -999°F/0 to -999°C/0 to -999 Units
Default: -999°F
If AL 2 = Pr:
Range: rL to A2HI
Default: rL
Alarm 2 High: Represents the high process alarm or high deviation alarm for Alarm
2. Will not appear if your unit does not have Alarm 2 and AL 2 = no .
If AL 2 = dE:
Range: 0 to 999°F/0 to 999°C/0 to 999 Units
Default: 999°F
If AL 2 = Pr:
Range: A2LO to rH
Default: rH
Calibration Offset: Adds or subtracts degrees from the input signal.
Range: -180°F to 180°F/-100°C to 100°C/-180Units to 180 Units; or -180.0°F to
180.0°F/-100.0°C to 100.0°C
Default: 0
rE1/It1
rE2/It2
Ct1
Ct2
db
A1LO
rA1/dE1
rA2/dE2
A1HI
A2LO
A2HI
CAL
