B8: Energy Saving - YASKAWA AC Drive-A1000 Technical Manual

5.2 b: Application
u

b8: Energy Saving

The Energy Saving feature improves overall system operating efficiency by operating the motor at its most efficient level.
Note: 1. Energy Saving is designed for applications with variable torque (Normal Duty) and is not appropriate for applications where the load may
suddenly increase.
2. The performance of the Energy Saving function depends on the accuracy of the motor data. Always perform Auto-Tuning and correctly
enter the motor data before using this function.
n b8-01: Energy Saving Control Selection
Enables or disables the Energy Saving function.
No.
b8-01
Setting 0: Disabled
Setting 1: Enabled
n 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 less energy consumption.
If the value is set too low the motor may stall.
No.
b8-02
n b8-03: Energy Saving Control Filter Time Constant (OLV, CLV)
Sets the response time for Energy Saving. A lower value allows for a quicker response; however a value that is too low may
cause instability.
No.
b8-03
n b8-04: Energy Saving Coefficient Value (V/f, V/f w/PG)
Fine tunes Energy Saving control. Adjust this setting while viewing the output power monitor (U1-08) and running the drive
with a light load.
A low setting results in less output voltage and less energy consumption. If the value is set too low the motor may stall. The
default setting depends on the capacity of the drive.
No.
b8-04
Note: The default value changes if the motor rated capacity set to E2-11 is changed. The Energy Saving coefficient is set automatically when Auto-
Tuning for Energy Saving is performed
n b8-05: Power Detection Filter Time (V/f, V/f w/PG)
Determines how often in milliseconds the output power is measured. The Energy Saving function continuously searches out
the lowest output voltage to achieve minimum output power.
Reducing this setting increases the response time. If the filter time is too short, the motor may become unstable with a lighter
load.
No.
b8-05
152
Parameter Name
Energy Saving Control Selection
Name
Energy Saving Gain
Name
Energy Saving Control Filter Time Constant
Name
Energy Saving Coefficient Value
(Refer to Auto-Tuning on page
Name
Power Detection Filter Time
100).
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
Setting Range
Determined by
0, 1
Setting Range
Determined by
0.0 to 10.0
Setting Range
Determined by
0.00 to 10.00 s
A1-02 and o2-04
Setting Range
Determined by
0.00 to 655.00 C6-01, E2-11, and
Setting Range
0 to 2000 ms
Default
A1-02
Default
A1-02
Default
Default
o2-04
Default
20 ms