CHV180 series frequency inverter special for elevator Trouble shooting
.92.
OV1
Over-voltage
when
acceleration
1.Input voltage is abnormal
2. After sudden power off,
restart the rotating motor.
1. Check the input
power.
2. Avoid restarting after
stopping.
OV2
Over-voltage
when
deceleration
1. Dec time is too short.
2. Load inertia is big.
3. Input voltage is
abnormal.
1. Increase Dec time.
2. Increase proper
braking kits.
3. Check the input
power.
OV3
Over-voltage
when constant
speed running
1. Input voltage changes
abnormally.
2. Load inertia is big.
1. Install input reactor.
2. Add proper braking
kits.
UV
DC bus
Under-voltage
1. Voltage is too low.
Inspect the input power
supply.
OL1
Motor overload
1. The voltage is too low.
2. Improper rated current
of the motor.
3. Motor stalling or the load
transits too much.
4. Open loop vector
control, reverse direction
of the encodering disk or
run at low speed for a long
time.
5. Motor drive heavy load
at low speed for a long
time.
1. Check the input
power.
2. Reset the rated
current of the motor.
3. Check the load and
adjust the torque boost.
4. Adjust the direction of
the encoding disk signal.
5. Select proper motor.
OL2
Inverter overload
1. Acc time is too short.
2. Restart the rotating
motor.
3. Input voltage is too low.
4. The load is too heavy.
5. Close loop vector.
Control reverse direction of
1. Increase Acc time or
select bigger capacity
inverter.
2. Avoid restarting after
stopping.
3. Select bigger capacity
inverter.
