CHV100 Series Close Loop Vector Control Inverter
.111.
7. TROUBLE SHOOTING
7.1 Fault and trouble shooting
Fault Code
Fault Type
Reason
Solution
OUT1
IGBT Ph-U fault
OUT2
IGBT Ph-V fault
OUT3
IGBT Ph-W fault
1. Acc/Dec time is too
short.
2. IGBT module fault.
3. Malfunction caused by
interference.
4. Grounding is not
properly.
1. Increase Acc/Dec
time.
2. Ask for support.
3. Inspect external
equipment and eliminate
interference.
OC1
Over-current
when
acceleration
OC2
Over-current
when
deceleration
OC3
Over-current
when constant
speed running
1
.
Short-circuit or ground
fault occurred at inverter
output.
2
.
Load is too heavy or
Acc/Dec time is too short.
3
.
V/F curve is not suitable.
4
.
Sudden change of load.
1. Inspect whether motor
damaged, insulation
worn or cable damaged.
2. Increase Acc/Dec time
or select bigger capacity
inverter.
3. Check and adjust V/F
curve.
4. Check the load.
OV1
Over-voltage
when
acceleration
OV2
Over-voltage
when
deceleration
OV3
Over-voltage
when constant
speed running
1. Dec time is too short
and regenerative energy
from the motor is too large.
2. Input voltage is too high.
1. Increase Dec time or
connect braking resistor
2. Decrease input
voltage within
specification.
UV
DC bus
Under-voltage
1
.
Open phase occurred
with power supply.
2
.
Momentary power loss
occurred
3
.
Wiring terminals for
Inspect the input power
supply or wiring.