Pid Temperature Control; Overview - Omron CP1E CPU UNIT SOFTWARE User Manual

16 Other Functions

16-1 PID Temperature Control

PID temperature control can be used with any model of CP1E CPU Unit.

16-1-1 Overview

The CP1E CPU Unit supports PID instructions with the autotuning function. Ladder programs can be
written to perform PID temperature control.
• Temperature
input:
• PID control:
• Control output:
Ladder program
Additional Information
The sampling cycle set for a PIDAT instruction is between 10 ms to 99.99 s in increments of
10 ms. The actual calculation cycle is determined by the relationship with cycle time. Refer to the
CP1E CPU Unit Instructions Reference Manual (Cat. No. W483) for the PIDAT instruction.
16-2
Input from Temperature Sensor Unit to words in the Input Area.
Execute using the PIDAT instruction in ladder program.
The PIDAT instruction is used in combination with the TPO instruction
(TIME-PROPORTIONAL OUTPUT) to perform time-proportional control.
To connect an SSR, connect a 24-V power supply to the transistor output and
output voltage pulses.
PIDAT
S S: Input word
C C: First parameter word
D
D: Output word
TPO
S S: Input word
C
C: First parameter word
R
R: Pulse output bit
Temperature Sensor Unit
Model with Thermocouple: CP1W-TS001/002
Model with Platinum Resistance Thermometer: CP1W-TS101/102
CP1E
PID
Time-proportional
transistor output
SSR
Temperature Sensor
CP1E CPU Unit Software User's Manual(W480)