YASKAWA CIPR-GA50C series Technical Manual page 517

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.
Name
(Hex.)
b8-05 Power Detection Filter
Time
(01D0)
Expert
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.
■
b8-06: Search Operation Voltage Limit
No.
Name
(Hex.)
b8-06 Search Operation Voltage
Limit
(01D1)
Expert
The Search Operation changes the output voltage in small increments to find a setpoint at which the drive can use
minimum power to operate.
Set this parameter to 0 to disable Search Operation. This will not disable Energy-saving control.
If the setting value is too low, the motor will stall when loads suddenly increase.
■
b8-16: PM E-Save Coefficient Ki
No.
Name
(Hex.)
b8-16 PM E-Save Coefficient Ki
(01F8)
Expert
When b8-16 = 1.00 (default), the drive will automatically calculate and control the energy-saving coefficient. If
the motor nameplate has a description for "Ki", set this parameter to the Ki value.
Do this procedure to prevent oscillation when you set b8-01 = 1 [Energy Saving Control Selection = Enabled].
1. Check U5-21 [Energy Save Coeff Ki] and make sure that it aligns with the Ki value on the motor nameplate.
2. If the numbers are different, set b8-16 to the Ki value on the motor nameplate.
■
b8-17: PM E-Save Coefficient Kt
No.
Name
(Hex.)
b8-17 PM E-Save Coefficient Kt
(01F9)
Expert
When E5-01 = 1xxx [PM Motor Code Selection = Yaskawa SSR1 series IPM motor], the drive automatically
calculates the energy-saving coefficient Kt and uses that value to control operation.
Do this procedure to prevent oscillation when you set b8-01 = 1 [Energy Saving Control Selection = Enabled].
1. Check U5-22 [Energy Save Coeff Kt] and make sure that it aligns with the Kt value on the motor nameplate.
2. If the numbers are different, set b8-17 to the Kt value on the motor nameplate.
YASKAWA SIEPC71061753A GA500 Technical Manual
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Sets the time constant to measure output power.
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Sets the voltage limit for Search Operation as a percentage of the motor rated voltage.
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets torque linearity. This parameter uses the Ki value from the motor nameplate. Usually it is not
necessary to change this setting.
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets torque linearity. This parameter uses the Kt value from the motor nameplate. Usually it is not
necessary to change this setting.
Description
Description
Description
Description
12.3 b: Application
Default
(Range)
20 ms
(0 - 2000 ms)
Default
(Range)
0%
(0 - 100%)
Default
(Range)
1.00
(0.00 - 3.00)
Default
(Range)
1.00
(0.00 - 3.00)
12
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