78
Function
Prompt
Selections or
Range of
Setting
Parameter Definition
NOTE: The selection of whether Minutes per
Repeat or Repeats per Minute is used is made in
the Control set up group under the prompt Reset
Unit.
Manual Reset –100 to
+100 (in %
output)
It is only applicable if you use control algorithm PD with
Manual Reset in the Algorithm set up group. Because a
proportional controller will not necessarily line out at
setpoint, there will be a deviation (offset) from setpoint.
This eliminates the offset and lets the PV line out at
setpoint.
ATTENTION: Bias is shown on the lower display.
Proportional
Band 2
or
GAIN 2
0.1 to 9999
%
or
0.001 to
1000
Proportional Band 2 or GAIN 2 , Rate 2 Min , and Reset 2
parameters are the same as previously described for
“Heat” except that they refer to the cool zone tuning
constants on duplex models or the second set of PID
constants, whichever is pertinent.
These parameters appear when the following settings
are configured:
1. Control Algorithm of the Algorithms set up group is
configured as PID A, PID B, PD+Manual Reset or Three
Position Step.
2. PID Sets of the Control set up group is configured as
2 Sets Keyboard, 2 Sets PV Swithcover, 2 Sets SP
Switchover, 4 Sets Keyboard, 4 Sets PV Swithcover or 4
Sets SP Switchover.
3. Proportion Unit of the Control set up group is
configured as Proportional Band or Gain.
Rate 2 Min 0.00 to
10.00
minutes
This is the same as above except that it applies to
Duplex models for the "COOL" zone of Heat/Cool
applications or for the second set of PID constants.
Reset 0.02 to These are the same as above except that they apply to
Chapter 4 - Configuration
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