Goodrive3000 series medium voltage VFD
Goodrive3000 inverter
-138-
Fault
code
Fault type
Possible cause
Solution
OV1
Overvoltage during
acceleration
Exception occurred to input voltage
Reset the rotating motor after a
momentary power failure
Check the input power
Avoid restart after stop
OV2
Overvoltage during
deceleration
DEC is too fast
Load inertia is too high
Exception occurred to input voltage
Increase DEC time
Install
dynamic
brake
components
Check the input power
OV3
Overvoltage during
constant speed
running
Exception occurred to input voltage
Load inertia is too high
Install the input reactor
Install
dynamic
brake
components
UV
Bus undervoltage
The voltage of the grid is too low;
Check the grid input power.
OL1
Motor overload
The grid voltage is too low
The motor rated current is set incorrectly
Motor stall or load jumps violently
In closed-loop vector control mode, the
encode runs reversely and the motor
runs at low speed for a long period
The motor power is too large
Check the grid voltage
Reset the motor rated current
Check the load and adjust
torque boost.
Change the signal direction of
the encoder
Select proper motor.
OL2
VFD overload
ACC is too fast
The motor in rotating is restarted
The grid voltage is too low
Load is too large
In closed-loop vector control mode, the
encoder runs reversely and the motor
runs at low speed for a long period
Increase ACC time
Avoid restart after stop
Check the grid voltage
Select a VFD with larger power
Change the signal direction of
the encoder
SPI
Phase loss on input
side
Phase loss on input R, S, 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).
If the motor is not connected, the
pre-excitation cannot be ended during
pre-excitation
Check the output wiring
Check the motor and cable.
OH1
Rectifier module
overheating
Instantaneous overcurrent occurred to
the VFD
Three-phase output have interphase or
the grounding is short circuited
Air duct is blocked or fan is damaged
Ambient temperature is too high
Control board cables or plugs are loose
Auxiliary power supply is damaged, and
undervoltage occurred for drive voltage
The short through of bridge arm of
power modules occurred
Control board is abnormal
See solutions for overcurrent
Re-wiring
Dredge the vent duct or replace
the fan
Lower the ambient temperature.
Check
and
reconnect
the
control board
Ask for technical support.
Ask for technical support.
Ask for technical support.
OH2
Inverter module
overheat
EF
External fault
SI external fault input terminal acts.
Check external device input.
CE
Communication fault
Incorrect baud rate
Serial communication error
Set a proper baud rate.
Press STOP/RST for reset or
