Setup, Chapter 4 WATLOW Series 942 User's Manual
29
Operation
Ent2
Ent2: Select whether Event 2 (Output 4) is ON or OFF. When a profile is com-
plete or has been put on hold, it will hold at its previous state. This parameter only
appears if Ot4 = Ent, and your unit has auxiliary outputs. For more information on
events see Chapter 6. Range: On or OFF Default: OFF
Proportional Band 1: A proportional band expressed in degrees or process units,
or % of span, within which a controller proportioning function is active for Output 1.
When Pb1 = 0, it functions as an ON/OFF control. The switching differential is then
determined by the HYS1 parameter. If dFL = US: Range: 0 to 999°F/0 to 555°C/0
to 999 Units; 0.0 to 99.9°F/0.0 to 55.5°C/0.0 to 99.9 Units Default: 25°F/2.5°F
If dFL = SI: Range: 0 to 999.9% of span Default: 3.0%
Span is defined as the operating range of the input sensor or rL to rH if the input
type is 0-5 or 420.
Proportional Band 2: A proportional band expressed in degrees or process units,
or in % of span, within which a controller proportioning function is active for Output
2. When Pb2 = 0, it functions as an ON/OFF control. The switching differential is
determined by the HYS2 parameter. This parameter will not appear if your unit
does not have a secondary output or Ot2 = no. If dFL = US: Range: 0 to 999°F/0
to 555°C/0 to 999 Units; 0.0 to 99.9°F/0.0 to 55.5°C/0.0 to 99.9 Units Default: 0°
If dFL = SI: Range: 0 to 999.9% of span Default: 0.0%
Reset /Integral1: A reset (integral) control action for Output 1 automatically
eliminating offset, or "droop," between set point and actual process temperature in
a pro-portional control. Will not appear if your unit does not have a secondary
output, or Pb1 = 0. Reset Range: 0.00 to 9.99 repeats/minute Integral Range: 0
and 00.1 to 99.9 minutes/repeat Default: 0.00
Reset /Integral 2: A reset (integral) control action for Output 2 that automatically
eliminates offset, or "droop," between set point and actual process temperature in a
proportional control. This parameter will not appear if your unit does not have a
secondary output, or Pb 2 = 0, or if Ot 2 = no. Reset Range: 0.00 to 9.99 repeats/
minute Integral Range: 0 and 00.1 to 99.9 minutes/repeat Default: 0.00
Rate /Derivative 1: The rate (derivative) function for Output 1 of the Series 942.
The rate is determined by how fast the error is changing. This parameter will not
appear if Pb 1 = 0. Range: 0.00 to 9.99 minutes Default: 0.00
Rate/Derivative 2: Rate (derivative) function for Output 2. Rate is determined by
how fast the error is changing. Does not appear if your unit does not have a
secondary output, Pb 2 = 0, or Ot 2 = no. Range: 0.00 to 9.99 min. Default: 0.00
Cycle Time 1: Expressed in seconds, time for a controller to complete one ON/
OFF cycle for Output 1. Time between successive turn ons. This parameter will
not appear if Pb 1 = 0, or Output 1 is a process output.
Range: 1 to 60 seconds Default: 5
Cycle Time 2: Expressed in seconds, time for a controller to complete one ON/
OFF cycle for Output 2. Time between successive turn ons. This parameter will
not appear if your unit does not have a secondary output, Pb 2 = 0, or Ot 2 = no.
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. This parameter 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 9.9Units Default: 0
Alarm 1 Low: Represents the low process alarm or low deviation alarm for Alarm
1. This parameter only appears if you have an auxiliary output and Ot3 = AL. See
the model number. If AL 1 = Pr: Range: rL to A1HI Default: rL
If AL 1 = dE: Range: 0 to -999°F/0 to -999°C/0 to -999 Units Default: -999°F
Pb1
Pb2
rE1/It1
rE2/It2
rA1/dE1
rA2/dE2
Ct1
Ct2
db
A1LO
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