4/00
UDC 3300 Controller Product Manual
275
Step
Action
10
Enter the values of GAIN (or PB), RATE, and RESET in minutes (or repeats
per minute) into the UDC 3300 controller and verify that the PV response is
adequate.
Make additional trimming adjustments, if necessary, to fine tune the
controller per the guidelines shown below:
TO REDUCE OVERSHOOT
Less Gain (more PB) perhaps a longer Rate time.
TO INCREASE OVERSHOOT OR INCREASE SPEED OR RESPONSE
More Gain (less PB), perhaps shorter Rate time.
Manual tuning formulas
Table 11-2 lists the formulas used in the procedure listed in Table 11-1.
Table 11-2
Manual Tuning Formulas
Units
GAIN
and
RESET TIME in
Minutes
Repeat
% PROPORTIONAL BAND
and
RESET ACTION in
Repeats
Minutes
Proportional (P) only
Use PD+MR Algorithm
(i.e. No Reset)
GAIN = Measured Gain x 0.5
RESET TIME = 50.00
(minimum reset)
RATE = 0
%PB = Measured PB x 2
RESET ACTION = 0.02
(repeats/minute)
RATE = 0
Propor Reset
(PI) (No Rate)
GAIN = Measured Gain x 0.5
RESET TIME = Measured Time
(M/R)
1.2
RATE = 0
%PB = Measured PB x 2.2
RESET ACTION = 1.2
(R/M)
Measured Time
RATE = 0
Propor Reset + Rate
(PID)
GAIN = Measured Gain x 0.6
RESET TIME = Measured Time
2
RATE = Measured Time
8
%PB = Measured PB x 1.7
RESET ACTION = 2
Measured Time
RATE = Measured Time
8
Summary of Contents for UDC3300
Page 1: ...Sensing and Control UDC 3300 Universal Digital Controller Product Manual 51 52 25 55D 4 00 ...
Page 12: ...xii UDC 3300 Controller Product Manual 4 00 ...
Page 18: ...6 UDC 3300 Controller Product Manual 4 00 ...
Page 90: ...78 UDC 3300 Process Controller Product Manual 4 00 ...
Page 230: ...218 UDC 3300 Controller Product Manual 4 00 ...
Page 254: ...242 UDC 3300 Controller Product Manual 4 00 ...
Page 292: ...Index 280 UDC 3300 Controller Product Manual 4 00 ...
Page 293: ......
