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4/00 UDC 3300 Process Controller Product Manual 81
Lower Display
Prompt
Upper Display
Range of Setting
or Selection
Parameter
Definition
RSET MIN
or
RSET RPM
0.02 to 50.00 RSET MIN = Reset in Minutes per Repeat
RSET RPM = Reset in Repeats per Minute
RESET (Integral Time) adjusts the controller’s output in
accordance with both the size of the deviation
(SP–PV) and the time it lasts. The amount of the
corrective action depends on the value of Gain. The Reset
adjustment is measured as how many times proportional
action is repeated per minute or how many minutes before
one repeat of the proportional action occurs.
Used with control algorithm PID-A or PID-B.
Also defined as "HEAT" Reset on Duplex models for
variations of Heat/Cool applications.
The selection of minutes per repeat or repeats per minute
is made in the CONTROL parameters group under prompt
MINorRPM.
MAN RSET
–100 to +100
(in % output)
MANUAL RESET 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.
Bias appears on the lower display.
PROPBD2
or
GAIN 2
0.1 to 9999 %
or
0.001 to 1000
PROPORTIONAL BAND 2 or GAIN 2, RATE 2, 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.
RATE2MIN
0.00 to 10.00 minutes
0.08 or less = OFF
RSET2MIN
RSET2RPM
0.02 to 50.00
ATTENTION
Set 2 Tuning Parameters are not available when the
Accutune selection for Loop 1 is SP+PV.
CYC SEC
or
CYC SX3
1 to 120
ATTENTION If 1/3 second
increments are used, value
of 120 = .33 seconds x 120
= 40 seconds maximum.
CYCLE TIME (HEAT) determines the length of one time
proportional output relay cycle. Defined as "HEAT" cycle
time for Heat/Cool applications.
CYC SEC—Electromechanical relays
CYC SX3—Solid state relays
Cycle times are in either second or 1/3-second increments
depending upon the configuration of RLY TYPE in the
Output Algorithm Set Up group.
CYC2 SEC
or
CYC2 SX3
1 to 120
ATTENTION If 1/3 second
increments are used, value
of 120 = .33 seconds x 120
= 40 seconds maximum.
CYCLE TIME 2 (COOL) is the same as above except it
applies to Duplex models as the cycle time in the "COOL"
zone of Heat/Cool applications or for the second set of
PID constants.
CYC2 SEC—Electromechanical relays
CYC2 SX3—Solid state relays
Cycle times are in either second or 1/3-second increments
depending upon the configuration of RLY TYPE in the
Output Algorithm Set Up group.