Q2 Q2A, Technical Manual

Page: 564 / 866

12.2 b: APPLICATION
564 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual
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Fine-Tuning PID
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.
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EZ Sleep/Wake-up Functionality
Set b5-89 = 1 [Sleep Method Selection = EZ Sleep/Wake-up] to enable the EZ Sleep/Wake-up function.
Note:
• When b5-89 = 0 [Sleep Method Selection = Standard] , the EZ Sleep function and related parameters are disabled. Parameter b5-91
[EZsleep Min Spd] is not included in this rule.
• Set b5-89 = 1 to disable b5-15 [Sleep Start Level] .