Honeywell UDC2300 Product Manual page 154

Function Parameter Reference Guide
12.2.64 PB or GAIN
This prompt is part of the Tuning Set up group.
PROPORTIONAL BAND is the percent of the range of the measured variable for which
a proportional controller will produce a 100 % change in its output.
GAIN is the ratio of output change (%) over the measured variable change (%) that
caused it.
If the PB is 20 %, then the Gain is 5. Likewise, a 3 % change in the error signal (SP-PV)
will result in a 15 % change in the controller's output due to proportional action. If the
gain is 2, then the PB is 50 %.
Defined as "HEAT" Gain on Duplex models for variations of Heat/Cool applications.
The selection of Prop. Band or Gain is made in the Control parameter group under
prompt "PB or GN."
Range of Setting: PB = 0.1 to 1000 %
12.2.65 PB 2 or GAIN 2
This prompt is part of the Tuning Set up group.
PROPORTIONAL BAND 2 is the percent of the range of the measured variable for
which a proportional controller will produce a 100 % change in its output.
GAIN 2 is the ratio of output change (%) over the measured variable change (%) that
caused it.
If the PB is 20 %, then the Gain is 5. Likewise, a 3 % change in the error signal (SP-PV)
will result in a 15 % change in the controller's output due to proportional action. If the
gain is 2, then the PB is 50 %.
Defined as "COOL" Gain on Duplex models for variations of Heat/Cool applications or
for a Second Set of PID constants.
The selection of Prop. Band or Gain is made in the Control parameter group under
prompt "PB or GN."
Range of Setting:
144
(PROPORTIONAL BAND or GAIN)
G =
where PB is the proportional band (in %)
GAIN = 0.01 to 1000
(PROPORTIONAL BAND 2 or GAIN 2)
G =
where PB is the proportional band (in %)
PB 2 = 0.1 to 1000 %
GAIN 2 = 0.01 to 1000
UDC2300 Controller Product Manual
100 %
PB %
100 %
PB %
12/00