YASKAWA OYMC V1000

1.9 n: Special Adjustments
YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual 231
Parameter Details
1
■ n8-48: Pull-In Current (for PM OLV)
Tells the drive the amount of current to be provided to the motor during no-load operation at
a constant speed. Set as a percentage of the motor rated current.
• Increase this setting when hunting occurs or the motor speed is unstable while running at a
constant speed.
• If there is too much current when driving a light load at a constant speed, then raise this
level slightly.
■ n8-49: d Axis Current for High Efficiency Control (for PM OLV)
Sets the amount of d axis current when using Energy Saving control as a percentage of the
motor rated current.
Although this setting seldom needs to be changed, please note the following:
• If motor operation is unstable when driving heavy loads, try lowering this setting.
• If motor parameters (E5) have been changed, this value will be reset to 0 and has to be
readjusted.
■ n8-51: Acceleration Time Pull-In Current (for PM OLV)
Sets the pull-in current during acceleration as a percentage of the motor rated current (E5-
03).
Adjustments to this setting may help in the following situations:
• Increase this setting when a large amount of starting torque is required.
• Lower this setting if there is excessive current during acceleration.
No. Name Setting Range Default
n8-47 Pull-In Current Compensation Time Constant 0.0 to 100.0 s 5.0 s
No. Name Setting Range Default
n8-48 Pull-In Current 20 to 200%
Determined by
E5-01
No. Name Setting Range Default
n8-49 d Axis Current for High Efficiency Control -200.0 to 0.0%
Determined by
E5-01
No. Name Setting Range Default
n8-51 Acceleration Time Pull-In Current 0 to 200%
Determined by
E5-01