B8: Energy Saving - YASKAWA GA700 Technical Manual

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b8: Energy Saving

Energy-saving control improves overall system operating efficiency by operating the motor at its most efficient
level.
Set b8-01 and the following parameters according to the control mode and the motor.
• Set parameters b8-04, b8-05, and b8-06 when using V/f Control or Closed Loop V/f Control.
• Set parameters b8-02, b8-03 when using vector control with an induction motor.
• Set parameters b8-16, b8-17 when using a PM motor.
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.
Name
(Hex.)
b8-01 Energy Saving
Control Selection
(01CC)
0 : Disabled
1 : Enabled
2 : Search Enabled
■
b8-02: Energy Saving Gain
No.
Name
(Hex.)
b8-02 Energy Saving Gain
(01CD)
RUN
Increasing the setting value increases the energy conservation effect. If the setting value is excessive, the motor
may stall.
■
b8-03: Energy Saving Filter Time
No.
Name
(Hex.)
b8-03 Energy Saving Filter
Time
(01CE)
RUN
Reducing the setting value improves responsiveness. However, if the setting value is too low, operation may
become unstable.
■
b8-04: Energy Saving Coefficient Value
No.
Name
(Hex.)
b8-04 Energy Saving
Coefficient Value
(01CF)
When using motors from other manufacturers, increase the setting value in increments of 5% to find the minimum
value usable for U1-08 [Output Power] at light loads.
Reducing the setting value reduces the output voltage to reduce power consumption. However, if the setting value
is too small, the motor may stall.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
V/f CL-V/f OLV CLV AOLV
Enables or disables Energy-saving control.
V/f CL-V/f OLV CLV AOLV
Configures the gain for energy-saving control.
V/f CL-V/f OLV CLV AOLV
Configures the responsiveness for energy-saving control.
V/f CL-V/f OLV CLV AOLV
Configures the energy-saving coefficient. The energy-saving coefficient is
used to maintain maximum motor efficiency. The default setting is the
Yaskawa motor value.
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
11.3 b: Application
Default
(Range)
0
(Determined by A1-
02)
Default Setting
(Range)
Determined by A1-02
(0.0 - 10.0)
Default Setting
(Range)
Determined by A1-
02, C6-01, and o2-04
(0.00 - 10.00 s)
Default Setting
(Range)
Determined by C6-
01, E2-11, and o2-04.
(0.00 - 655.00)
11
637