INVT Goodrive350-19 Series Operation Manual page 388

Goodrive350-19 series VFD for crane
Fault
Fault type
code
protection
Inverter unit
OUt3 W-phase
protection
Overvoltage
OV1 during
acceleration
Overvoltage
OV2 during
deceleration
Overvoltage
OV3 during constant
speed running
Overcurrent
OC1 during
acceleration
Overcurrent
OC2 during
deceleration
Overcurrent
OC3 during constant
speed running
Bus undervoltage
UV
OL1 Motor overload
OL2 VFD overload
Possible cause
connected.
To-ground short circuit occurs.
Exception occurred to input
voltage.
Large energy feedback.
Lack of braking units.
Energy-consumption braking is
not enabled.
Deceleration time is too short.
ACC/DEC is too fast.
The voltage of the grid is too
low.
The VFD power is too small.
Load transient or exception
occurred.
To-ground short circuit or output
phase loss occurred.
Strong external interference
sources.
Overcurrent stalling protection
is not enabled.
The voltage of the grid is too
low.
fault Overvoltage stall protection is
not enabled.
Grid voltage too low.
The motor rated current is set
incorrectly.
Motor stall or load jumps
violently.
ACC is too fast.
The motor in rotating is
restarted.
peripheral device.
Check the input power.
Check whether load DEC time is
too short.
or the motor starts during rotating.
Install dynamic brake
components.
Check the related function code
settings.
Increase ACC/DEC time.
Check the input power.
Select a VFD with larger power.
Check whether the load is short
circuited (to-ground short circuit or
line-to-line short circuit) or the
rotation is not smooth.
Check the output wiring.
Check whether there is strong
interference.
Check the related function code
settings.
Check the grid input power.
Check the related function code
settings.
Check the grid voltage.
Reset the rated current of the
motor.
Check the load and adjust torque
boost.
Increase ACC time.
Avoid restart after stop.
Check the grid voltage.
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Troubleshooting
Solution