B8: Energy Saving - YASKAWA U1000 Series Technical Manual

b7-02: Droop Control Delay Time

The setting in b7-02 adjusts the responsiveness of Droop control. Reduce the setting if the reaction time is too long, and
increase it if hunting occurs.
No.
b7-02
b7-03: Droop Control Limit Selection

Enables or disables the droop control limit.
No.
b7-03
Setting 0: Disabled
Setting 1: Enabled
 b8: Energy Saving
The Energy Saving feature improves overall system efficiency by operating the motor at its most efficient level.
Note: 1. Energy Saving is not designed for applications that experience instantaneous heavy loads or applications that rarely operate with light
load conditions.
2. As the performance of the Energy Saving function strongly depends on the accuracy of the motor data, always perform Auto-Tuning
and make sure the motor data has been entered correctly before using this function.
b8-01: Energy Saving Control Selection

Enables or disables the Energy Saving function.
Note: Enabling the Energy Saving function when using a PM motor may adversely affect motor efficiency depending on the type of
PM motor. Disable the Energy Saving function in such cases.
No.
b8-01
Setting 0: Disabled
Setting 1: Enabled
b8-02: Energy Saving Gain (OLV, CLV)

Sets the gain level for Energy Saving. A higher value results in lower magnetization of the motor and thereby less energy
consumption. However, if b8-02 is too high, the motor may stall.
No.
b8-02
b8-03: Energy Saving Control Filter Time Constant (OLV, CLV)

Parameter b8-03 sets the response time for Energy Saving. Although lowering this value allows for a quicker response,
instability may result if it is too low.
No.
b8-03
YASKAWA ELECTRIC SIEP C710636 03A YASKAWA U1000 Technical Manual
Parameter Name
Droop Control Delay Time
Parameter Name
Droop Control Limit Selection
Parameter Name
Energy Saving Control Selection
Name
Energy Saving Gain
Name
Energy Saving Control Filter Time Constant
5.2 b: Application
Setting Range Default
0.03 to 2.00 s
Setting Range Default
0, 1
Setting Range Default
0 or 1 Determined by A1-02
Setting Range Default
0.0 to 10.0 Determined by A1-02
Setting Range Default
Determined by
0.00 to 10.00 s
A1-02, C6-01, and o2-04
0.05 s
1
5
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