Honeywell UDC 3300 Universal Remote User Manual


 
4/00 UDC 3300 Process Controller Product Manual 95
Lower Display
Prompt
Upper Display
Range of Setting
or Selection
Parameter
Definition
PID A
ATTENTION
PID A should
not be used for Proportional
only action; i.e., no integral
(reset) action. Instead, use
PD+MR with rate set to 0.
PID A is normally used for three-mode control. This means
that the output can be adjusted somewhere between 100
% and 0 %. It applies all three control actions
Proportional (P), Integral (I), and Derivative (D)to the
error signal.
Proportional (Gain)
Regulates the controllers output in
proportion to the error signal (the difference between
Process Variable and Setpoint).
Integral (Reset
)—Regulates the controllers output to the
size of the error and the time the error has existed. (The
amount of corrective action depends on the value of
proportional Gain.)
Derivative (Rate)
Regulates the controllers output in
proportion to the rate of change of the error. (The amount
of corrective action depends on the value of proportional
Gain.)
PID B PID BUnlike the PID A equation, the controller gives
only an integral response to a setpoint change, with no
effect on the output due to the gain or rate action, and it
gives full response to PV changes. Otherwise controller
action is as described for the PID A equation. See note on
PID A.
PD+MR PD WITH MANUAL RESET is used whenever integral
action is not wanted for automatic control. The equation is
computed with no integral contribution. The MANUAL
RESET, which is operator adjustable, is then added to the
present output to form the controller output.
Switching between manual and automatic mode will be
bumpless.
If you select PD with Manual Reset you can also configure
the following variations
PD (Two Mode) control,
P (Single Mode) control.
Set Rate (D) to 0.
Other prompts affected: MANRSET3
OUT OVRD
OUTPUT OVERRIDE SELECTThis selection lets you
select high or low output override. Only available if the
controller is configured for 2-Loop operation. (NOTE 1)
ATTENTION
Loop 1 must be in Automatic for this
selection to work. While the output is being overridden, an
“O” appears as the leftmost digit of the upper display.
DISABL DISABLEDisables Output Override.
HI SEL HIGH SELECTThe controller will select the higher of
output 1 or output 2 and direct it to output 1 rear terminals.
LO SEL LOW SELECTThe controller will select the lower of
output 1 or output 2 and direct it to output 1 rear terminals.