Trip
code
Trip Type
Possible causes
Solutions
closed-loop vector
control
Ou1
Over Voltage in
Acceleration
1.Acceleration time
too short
1. Increase the acceleration
time
2.Power supply
abnormal
2. Check the input power
source.
Ou2
Over voltage in
deceleration
1.Deceleration time
too short
1. Increase the deceleration
time
2.Large load inertia
2. Add suitable brake
devices.
Ou3
Over voltage in
constant speed
1. Power supply
abnormal
1. Check the input power
source.
2.Large load inertia
2. Add suitable braking
devices.
GF
③
Ground Fault
1. One output phase
got short circuit
problem.
1. Check whether the electric
motor insulation is
weakening.
2. Check whether the wiring
between the frequency
converter and the electric
motor is damaged.
SC
Load
short-circuit
1. Wiring of inverter
and motor get
phase-to-phase
short circuit
1. Check whether the electric
motor coil is short circuit.
2.Damage of the
inverting module
IGBT
2. Ask for the services from
manufactures.
OH1
Heat-sink over
heat
1. Ambient
temperature too
high
1. Lower the ambient
temperature.
2. Fan is damaged
2. Change the fan
3. Fan air duct is
blocked
3. Clear the air duct.
OL1
Motor overload
1. Power supply
abnormal
1. Check the input power
source.
2. Motor rated
current set wrongly
2. Check whether the motor’s
rated current is correctly set
