Overcurrent - Kruger Ecowatt K320 Series Operation Manual

Ecowatt Drive K320 series
®

7.6.8 Overcurrent

Decrease the torque
boost
Adjust the V/F curve
Set the
V/F vibration control
parameters properly
Yes
Whether the torque
boost is too high?
No
Whether the multi-
No
dots V/F curve is set
properly?
Yes
Whether unusual
Yes
vibration occurs on
the motor?
No
If it is a VFD fault,
contact us
Overcurrent
Whether UVW on the
output side of the VFD is
short to ground? Remove
the motor cable and
checked whether it is
connected to earth.
No
Whether the motor is
short to ground?
No
Whether the motor type and
parameters are set correctly?
Yes
Whether parameter
autotuning is
performed?
Yes
Whether the
ACC/DEC time is too
short?
No
Whether the load is
too heavy?
No
Whether there are
interference sources?
No
Yes
Whether it is V/F
control?
No
Whether the ASR and ACR
parameters are set properly?
Yes
If it is a VFD fault,
contact us
-264-
Troubleshooting
Rectify the short-to-
Yes ground fault, and
configure the motor
cables properly
Yes
Replace the motor
No
Set the motor type and
parameters correctly
No
Perform parameter
autotuning
Yes
Adjust the ACC/DEC
time
Reduce the load and
Yes
increase the capacity of
the VFD
Yes
Remove the
interference sources
No
Set the ASR and ACR
parameters properly