User Manual

LOGO! functions
4.4 Special functions list - SF
LOGO!
220 Manual, 06/2014, A5E33039675
4.4.30
PI controller
Short description
Proportional-action and integral-action controllers. You can use both types of controller
individually or combined.
Symbol in LOGO!
Wiring
Description
Input A/M Set the mode of the controller:
1: automatic mode
0: manual mode
Input R Use the input R to reset the output AQ. As long as
this input is set, the input A/M is disabled.
Output AQ is set to 0.
Input PV
Analog value: process variable, influences the output
Parameter SP: set-value assignment
Range of values:
-10,000 to 20,000
KC: gain
Range of values:
00.00 to 99.99
TI: integral time
Range of values:
00:01m to 99:59 m
Dir: action direction of the controller
Range of values:
+ or -
Mq: value from AQ with manual mode
Range of values:
0 to 1,000
Min: minimum value for PV
Range of values:
-10,000 to 20,000
Max: maximum value for PV
Range of values:
-10,000 to 20,000
A: gain
Range of values:
-10.00 to 10.00
B: offset
Range of values:
-10,000 to 10,000
p: number of decimals
Range of values:
0, 1, 2, 3
Output AQ This special function has an analog output (=
manipulated variable). This output can only be
connected with analog inputs, analog flags, analog
outputs or network analog outputs.
Range of values for AQ:
0 to 1,000