Salicru CV30, User Manual, Page: 95 / 140

Fault Tracking 95 - 140
Fault code Fault type Possible cause What to do
OUt1 IGBT Ph-U fault 1. The acceleration is too fast
2. IGBT module fault
3. Malfunction caused by
interference
4. The connection of the driving
wires is not good,
5. Grounding is not properly
1. Increase Acc time
2. Change the power unit
3. Check the driving wires
4. Inspect external equipment
and eliminate interference
OUt2 IGBT Ph-V fault
OUt3 IGBT Ph-W fault
OC1
Over-current when
acceleration
1. The acceleration or
deceleration is too fast.
2. The voltage of the grid is too
low.
3. The power of the inverter is
too low.
4. The load transients or rotation
is abnormal.
5. The grounding is short
circuited or the output is phase
loss.
6. There is strong external
interference.
7. The overvoltage stall
protection is not opened. 1. Increase the ACC time
2. Check the input power
3. Select the inverter with a
larger power
4. Check if the load is short
circuited (the grounding short
circuited or the wire short
circuited) or the rotation is not
smooth.
5. Check the output
configuration.
6. Check if there is strong
interference.
7. Check the setting of relative
function codes.
OC2
Over-current when
deceleration
OC3
Over-current when
constant speed
running
OV1
Over-voltage when
acceleration
1. The input voltage is
abnormal.
2. There is large energy
feedback.
3. No braking components.
4. Braking energy is not
evacuated
1. Check the input power
2. Check if the DEC time of the
load is too short or the inverter
starts during the rotation of the
motor or it needs to add the
dynamic braking components.
3. Install the braking
components.
4. Check the setting of relative
function codes.
OV2
Over-voltage when
deceleration
OV3
Over-voltage when
constant speed
running
UV DC bus Under-voltage
1. The voltage of the power
supply is too low.
2. The overvoltage stall
protection is not opened. 1. Check the input power of the
supply line.
2. Check the setting of relative
function codes.
OL1 Motor overload
1. The voltage of the power
supply is too low.
2. The motor setting rated
current is incorrect.
3. The motor stall or load
transients are too strong. 1. Check the power of the supply
line
2. Reset the rated current of the
motor
3. Check the load and adjust the
torque lift