Fine-tune the following parameter settings to have PID control eliminate problems with overshoot and oscillation.

  • b5-02 [Proportional Gain (P)]

  • b5-03 [Integral Time (I)]

  • b5-05 [Derivative Time (D)]

  • b5-08 [PID Primary Delay Time Constant]

 

Purpose

Procedure

Results

Prevent overshoot.

  • Set b5-05 [Derivative Time (D)] to a smaller value.

  • Set b5-03 [Integral Time (I)] to a larger value.

Quickly stabilize control.

  • Set b5-05 [Derivative Time (D)] to a larger value.

  • Set b5-03 [Integral Time (I)] to a smaller value.

Prevent long-cycle oscillations.

Set b5-03 [Integral Time (I)] to a larger value.

Prevent short-cycle oscillations.

  • Set b5-05 [Derivative Time (D)] to a smaller value.

  • If you set b5-05 = 0.00 [Derivative Time (D) = disabling D control] and it does not stop oscillation, then set b5-02 [Proportional Gain (P)] to a smaller value or set b5-08 [PID Primary Delay Time Constant] to a larger value.