Goodrive350-19 series VFD for crane
Troubleshooting
-377-
Fault
code
Fault type
Possible cause
Solution
Grid voltage too low.
Load too large.
Power is too small.
Select the VFD with larger power.
Select proper motor.
SPI
Input phase loss
Phase loss or violent fluctuation
occurred on inputs R, S, and T.
Check the input power.
Check the installation wiring.
SPO
Phase loss on
output side
Phase loss occurred to U, V, W
output (or the three phases of
motor is asymmetrical).
Check the output wiring.
Check the motor and cable.
OH1
Rectifier module
overheating
Air duct is blocked or fan is
damaged.
Ambient temperature is too
high.
Long-time overload running.
Ventilate the air duct or replace
the fan.
Lower the ambient temperature.
OH2
Inverter module
overheat
Fault
EF
External fault
SI external fault input terminal
acts.
Check external device input.
CE
RS485
communication
fault
Baud rate set improperly.
Communication line fault.
Incorrect communication
address.
Communication suffers from
strong interference.
Set a proper baud rate.
Check the wiring of
communication interfaces.
Set the communication address
correctly.
Replace or change the wiring to
enhance the anti-interference
capacity.
ItE
Current detection
fault
Poor contact of the connector of
control board.
Hall component damaged.
Exception occurred to
amplification circuit.
Check the connector and re-plug.
Replace the hall component.
Replace the main control board.
tE
Motor autotuning
fault
Motor capacity does not match
with the VFD capacity. This fault
may occur if the capacity
difference exceeds five power
classes.
Motor parameter is set
improperly;
The parameters gained from
autotuning deviate sharply from
Change the VFD model, or adopt
V/F mode for control;
Set proper motor type and
nameplate parameters;
Empty the motor load and carry
out autotuning again.
Check the motor wiring and
parameter setup;
Check whether the upper limit