12.2 b: APPLICATION
544 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
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.
■ 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].
Configuration Parameter Description
b5-90 [EZsleep Unit] Sets the unit of measure for b5-92 [EZsleep Level]. When b5-90 = 1[0.1Hz units], the setting range of b5-91
[EZsleep Min Spd] is 0.0 to 590.0 Hz. When b5-90 = 0 [rpm], the setting range is 0 to 35400 min
-1
(r/min).
Note:
When you change b5-90, the value of b5-92 is not automatically updated.
b5-91 [EZsleep Min Spd]
This parameter sets the lower limit for PID output. The drive uses the largest value of b5-91, b5-34 [PID Out
Low Limit Level], and d2-02 [FRef Lower Limit] to internally set the lower limit of PID output. The b5-89
setting does not have an effect.
b5-92 [EZsleep Level] When the output frequency or motor speed is less than the value of b5-92 for longer than the value of b5-93
[EZsleep Time], the drive does to sleep.
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