16 Other Functions
16-2
CP2E CPU Unit Software User’s Manual(W614)
16-1 PID Temperature Control
PID temperature control can be used with any model of CP2E CPU Unit.
The CP2E CPU Unit supports PID instructions with the autotuning function. Ladder programs can be
written to perform PID temperature control.
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/CP2E CPU Unit Instructions Reference Manual (Cat. No. W483) for the PIDAT instruction.
16-1-1 Overview
• Temperature
input:
Input from Temperature Sensor Unit to words in the Input Area.
• PID control: 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.
• Control output: To connect an SSR, connect a 24-V power supply to the transistor output and
output voltage pulses.
SSR
PIDAT
S
C
D
TPO
S
C
R
PID
CP2E
S: Input word
C: First parameter word
D: Output word
S: Input word
C: First parameter word
R: Pulse output bit
Temperature Sensor Unit
Model with Thermocouple: CP1W-TS001/002/003
Model with Platinum Resistance Thermometer: CP1W-TS101/102
Ladder program
Time-proportional
transistor output
Temperature Sensor
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