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L8-27: Overcurrent Detection Gain

No.

(Hex.)

Name

Description

Default

(Range)

L8-27

(04DD)

Overcurrent Detection Gain

Sets the PM motor overcurrent detection level as a percentage of the motor rated current value.

300.0%

(0.0 - 1000.0%)
Note:

  • The overcurrent detection function detects the lower of these two values:

    • Drive overcurrent level

    • Motor rated current × L8-27 / 100

  • Set L7-xx [Torque Limit] parameters to a smaller value than the setting of L8-27.

  • On drives with software versions PRG:1022 and later, this function is disabled when you set L8-27 = 0.0. Under usual circumstances, do not set L8-27 = 0.0. If the drive rated current is much higher than the motor rated current, PM motor magnets can demagnetize when current flows at the drive overcurrent detection level. The “PRG” column on the nameplate on the right side of the drive identifies the software version. You can also use U1-25 [Software Number] to identify the software version.