12.3 b: Application
686 YASKAWA SIEPC71061705H GA700 Series Technical Manual
Note:
• Energy-saving control is not appropriate for applications with sudden changes in the load, or applications driving heavy loads such as a
traverse car application.
• Energy-saving control maximizes operation based on precise motor data set to the drive. Be sure to perform Auto-Tuning and enter the
correct information about the motor before using the Energy-saving control.
■ b8-01: Energy Saving Control Selection
No.
(Hex.)
Name Description
Default
(Range)
b8-01
(01CC)
Energy Saving Control
Selection
Sets the Energy-saving control function.
0
(0 - 2)
0 : Disabled
1 : Enabled
2 : Automatic Optimization
Note:
Setting 2 is available only when A1-02 = 6, 7 [Control Method Selection = AOLV/PM, CLV/PM] and in Expert Mode.
■ b8-02: Energy Saving Gain
No.
(Hex.)
Name Description
Default
(Range)
b8-02
(01CD)
RUN
Expert
Energy Saving Gain
Sets the gain for Energy-saving control.
Determined by A1-02
(0.0 - 10.0)
Increase the setting value to increase energy saving. If the setting value is too large, the motor will stall.
■ b8-03: Energy Saving Filter Time
No.
(Hex.)
Name Description
Default
(Range)
b8-03
(01CE)
RUN
Expert
Energy Saving Filter Time
Sets the responsiveness for Energy-saving control.
Determined by A1-02，C6-
01 and o2-04
(0.00 - 10.00 s)
Decrease the setting value to increase responsiveness. If the setting value is too low, operation will not be stable.
■ b8-04: Energy Saving Coefficient Value
No.
(Hex.)
Name Description
Default
(Range)
b8-04
(01CF)
Expert
Energy Saving Coefficient
Value
Sets the Energy-saving control coefficient to maintain maximum motor efficiency. The default
setting is for Yaskawa motors.
Determined by C6-01, E2-
11, and o2-04
(0.00 - 655.00)
When you use a motor from a different manufacturer, increase the setting value in 5% increments to find the
minimum value for U1-08 [Output Power] at light loads.
When you decrease the setting value, it decreases the output voltage and decreases power consumption. If the
setting value is too low, the motor will stall.
Note:
When you do Rotational Auto-Tuning, the drive will automatically set the energy-saving coefficient.
■ b8-05: Power Detection Filter Time
No.
(Hex.)
Name Description
Default
(Range)
b8-05
(01D0)
Expert
Power Detection Filter
Time
Sets the time constant to measure output power.
20 ms
(0 - 2000 ms)
Decrease the setting value to increase responsiveness to load changes. If you set the value too low during
operation at light loads, motor speed is not stable.
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