INVT Goodrive350-19 Series Operation Manual page 361

Goodrive350-19 Series VFD for Crane
Fault
Fault type
code
[2] Inverter unit
OUt2
V-phase protection
[3] Inverter unit
OUt3
W-phase protection
[4] Overcurrent during
OC1
[5] Overcurrent during
OC2
[6] Overcurrent during
OC3 constant speed
[7] Overvoltage during
OV1
[8] Overvoltage during
OV2
[9] Overvoltage during
OV3 constant speed
UV [10] Bus undervoltage
OL1 [11] Motor overload
OL2 [12] VFD overload
Misoperation caused by
interference.
Drive wires poorly
connected.
To-ground short circuit
occurred.
ACC/DEC is too fast.
ACC
Grid voltage too low.
VFD power too small.
DEC
Load transient or exception
occurred.
To-ground short circuit or
output phase loss occurred.
Strong external interference
sources existed.
running
Overcurrent stalling
protection disabled.
Exception occurred to input
ACC
voltage.
Large energy feedback.
DEC
Lack of braking units.
Energy-consumption braking
disabled.
Deceleration time too short.
running
Grid voltage too low.
Overvoltage stall protection
disabled.
Grid voltage too low.
Motor rated current set
incorrectly.
Motor stall or load jumps
violently.
ACC too fast.
Motor restarted during
rotating.
Grid voltage too low.
Load too heavy.
Possible cause
-349-
Troubleshooting
Solution
Check drive wires.
Check whether there is strong
interference surrounding the
peripheral device.
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 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.
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.
Select a VFD with larger power.
Select a proper motor.