INVT Goodrive20-EU VFD Series Operation Manual page 111

Goodrive20-EU series VFD
Fault
Fault type
code
Over-current
OC1 during
acceleration
Over-current
OC2 during
deceleration
Over-current
when running
OC3
at constant
speed
Over-voltage
OV1 during
acceleration
Over-voltage
OV2 during
deceleration
Over-voltage
when running
OV3
at constant
speed
DC bus
UV
under-voltage
OL1 Motor overload
Possible cause
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 feedback;
No brake components;
Braking energy is not open
The voltage of the power supply
is too low
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 is too strong.
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 short or the VFD
starts during the rotation of the
motor or it is necessary to install
dynamic braking components;
Install the brake components;
Check the setting of related
function codes
Check the input power of the
supply line
1. Check grid voltage
2. Reset the rated current of the
motor
3. Check the load and adjust the
torque lift
107
Fault tracking
Solutions