Mitsubishi Electric MELSEC-Q/L - Page 743

7 APPLICATION INSTRUCTIONS
7.18 PID Instruction
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Ex.
PID operation in cooling (direct action)
TD3 > TD2 > TD1
TD3 > TD2 > TD1
PI action (D action not performed)
MV
SV
Time
Time
T
D1 (PID action)
T
D2 (PID action)
T
D3 (PID action)
T
D3 (PID action)
PI action (D action not performed)
Change caused by disturbance
Response to the disturbance
T
D1 (PID action)
T
D2 (PID action)
Temperature