11.3 b: Application
728 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 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 Mode Selection = Standard], the EZ Sleep function and related parameters are disabled. Parameter b5-91 [EZ
Minimum Speed] is not included in this rule.
• Set b5-89 = 1 to disable b5-15 [PID Sleep Function Start Level].
Configuration Parameter Description
b5-90 [EZ Sleep Unit] Sets the unit of measure for b5-92 [EZ Sleep Level]. When b5-90 = 0 [0.1Hz units],
the setting range of b5-91 [EZ Minimum Speed] is 0.0 to 590.0 Hz. When b5-90 = 1
[rev/min], 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 [EZ Minimum Speed]
This parameter sets the lower limit for PID output. The drive uses the largest value
of b5-91, b5-34 [PID Output Lower Limit], and d2-02 [Frequency Reference Lower
Limit] to internally set the lower limit of PID output. The b5-89 setting does not
have an effect.
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