Honeywell UDC 3300 Product Manual page 93

Lower Display
Prompt
RSET MIN
or
RSET RPM
MAN RSET
PROPBD2
or
GAIN 2
RATE2MIN
RSET2MIN
RSET2RPM
CYC SEC
or
CYC SX3
CYC2 SEC
or
CYC2 SX3
4/00
Upper Display
Range of Setting
or Selection
0.02 to 50.00
–100 to +100
(in % output)
0.1 to 9999 %
or
0.001 to 1000
0.00 to 10.00 minutes
0.08 or less = OFF
0.02 to 50.00
1 to 120
ATTENTION If 1/3 second
increments are used, value
of 120 = .33 seconds x 120
= 40 seconds maximum.
1 to 120
ATTENTION If 1/3 second
increments are used, value
of 120 = .33 seconds x 120
= 40 seconds maximum.
UDC 3300 Process Controller Product Manual
Parameter
Definition
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.
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.
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.
ATTENTION
Set 2 Tuning Parameters are not available when the
Accutune selection for Loop 1 is SP+PV.
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.
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.
81