INVT GD310-011P-4-UL, Operation Manual

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GD310-UL series VFD Fault tracking
-173-
Fault
code
Fault type Cause Solution
OUt3
[3] IGBT W
phase
protection
driving wires is not good

The grounding is not good
equipment
OC1
[4] Overcurrent
during
acceleration

The acceleration or
deceleration is too fast

The voltage of the grid is too
low

The power of the VFD is too
low

The load transients or is
abnormal

The grounding is short
circuited or the output is
phase loss

There is strong external
interference

The overvoltage stall
protection is not open

Increase the acc. time

Check the input power

Select the VFD with a larger
power

Check if the load is short circuited
(the grounding short circuited or
the wire short circuited) or the
rotation is not smooth

Check the output configuration.

Check if there is strong
interference

Check the setting of related
function codes
OC2
[5] Overcurrent
during
deceleration
OC3
[6] Overcurrent
during constant
speed running
OV1
[7] Overvoltage
during
acceleration

The input voltage is
abnormal

There is large energy
feedback

No braking components

Braking energy is not open

Check the input power

Check if the DEC time of the load
is too short or the VFD starts
during the rotation of the motor or
it needs to increase the energy
consumption components

Install the braking components

Check the setting of related
function codes
OV2
[8] Overvoltage
during
deceleration
OV3
[9] Overvoltage
during constant
speed running
UV
[10] Bus
undervoltage

The voltage of the power
supply is too low

The overvoltage stall
protection is not open

Check the input power of the
supply line

Check the setting of related
function codes
OL1
[11] Motor
overload

The voltage of the power
supply is too low

The motor setting rated
current is incorrect

The motor stall or load
transients is too strong

Check the power of the supply
line

Reset the rated current of the
motor

Check the load and adjust the
torque lift