Omron SYSMAC CP Series, User Manual

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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 In s truction s Reference Manual (Cat. No. W4 83 ) 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.
SS R
PIDAT
S
C
D
TPO
S
C
R
PID
CP2E
S : Inp u t word
C: Fir s t p a r a meter word
D: O u tp u t word
S : Inp u t word
C: Fir s t p a r a meter word
R: P u l s e o u tp u t b it
Temper a t u re S en s or Unit
Model with Thermoco u ple: CP1W-T S 001/002/003
Model with Pl a tin u m Re s i s t a nce Thermometer: CP1W-T S 101/102
L a dder progr a m
Time-proportion a l
tr a n s i s tor o u tp u t
Temper a t u re S en s or