INVT Goodrive20-EU Series Operation Manual page 112

Goodrive20-EU Series VFD
INVT office.
2. If there is nothing wrong, please check P07 and ensure the corresponding recorded fault
parameters to confirm the real state when the current fault occurs by all parameters.
3. See the following table for detailed solution and check the corresponding abnormal state.
4. Eliminate the fault and ask for relative help.
5. Check to eliminate the fault and carry out fault reset to run the VFD.
Note: The numbers enclosed in square brackets such as [1], [2] and [3] in the Fault type
column in the following table indicate the VFD fault type codes read through communication.
Fault
Fault type
code
[1] Inverter unit
OUt1 U phase
protection
[2] Inverter unit
OUt2 V phase
protection
[3] Inverter unit W
OUt3
phase protection
[4] Overcurrent
OC1 during
acceleration
[5] Overcurrent
OC2 during
deceleration
[6] Overcurrent
OC3 during constant
speed running
[7] Overvoltage
OV1 during
acceleration
Possible cause

Acceleration is too fast;

IGBT module damaged;

Misacts caused by
interference;

The connection of the
drive wire is not good;

To-ground short circuit.

Acceleration is too fast;

Grid voltage is too low;

VFD power is too small;

Load transients or is
abnormal;

To-ground short circuit or
output phase loss occur;

There is strong external
interference;

The overvoltage stall
protection is not open.

The input voltage is
abnormal;

There is large energy
-107-
Solutions

Increase acceleration
time;

Replace the power unit;

Check drive wires;

Check whether there is
strong interference caused
by external equipment.

Increase acceleration
time;

Check input power;

Select the VFD with a
larger power;

Check if the load is short
circuited (to-ground short
circuit or line-to-line short
circuit) or the rotation is
not smooth;

Check the output wiring;

Check if there is strong
interference;

Check the setting of
related function codes.

Check the input power;

Check if the load
deceleration time is too
Fault tracking