Ex.
PID operation in forward operation (cooling)
Temperature
TD3>TD2>TD1
PI operation (without differential operation)
Changes caused by disturbance
TD1 (PID operation)
TD3 (PID operation)
Output value (MV)
TD3>TD2>TD1
Changes in output caused by disturbance
TD2 (PID operation)
TD1 (PID operation)
TD3 (PID operation)
10 PID CONTROL FUNCTION
80
10.6 Details of Parameters
TD2 (PID operation)
Target value (SV)
Time
PI operation (without differential operation)
Time