INVT CHV Series User Manual

Trouble Shooting
102
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
input power supply are
loose.
4．Voltage fluctuations in
power supply are too
large.
Inspect the input power
supply or wiring.

INVT CHV Series Specifications

General

Brand	INVT
Model	CHV Series
Category	DC Drives
Language	English