Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller CUSTOMIZATION GUIDE - Manual (Page 69)

F-CIM 61
PID - 2
NOT REUSABLE
NAME SYMBOL DATAPOINT
INPUTS
S n-1 DEVIATION DV2 C193
A [unused]
B RESET FEEDBACK RF2 C199
C CONTROL TRACK COM-
MAND CTC2 L171
PARAMETERS PROPORTIONAL BAND PB2 C178
RESET TIME TR2 C179
RATE TIME TD2 C180
OUTPUT HIGH LIMIT OH2 C181
OUTPUT LOW LIMIT OL2 C182
MANUAL RESET MR2 C183
INSTRUMENT RANGE IR2 C187
FEED FORWARD FF2 C194
REVERSE SWITCH RSW2 L154
OUTPUTS
S n CONTROL OUTPUT CO2 C195
Description:
This module computes a control output signal based on the above listed inputs and parameters.
The result is simultaneously available as the module output S
n
and as a database parameter
CO. The A, B, and C inputs can be any L,B, C[S], or H type datapoint. When the
control track command input is less than one, the module output will track the reset
feedback input (B)by back calculating the integrator term. When (C) input is greater
than or equal to 1 the reset feedback is used by the integrator to calculate the next
output and should reflect the value (scaled 0-100%) of the value of the final control
element. For standard PID controller reset feedback, (B) should be OUT and con-
trol track command should be AUT.
MODULAR CONTROLLER CUSTOMIZATION GUIDE
3-17