INVT Goodrive350 Series Operation Manual page 248

Goodrive350 series high-performance multifunction VFD
Fault
Fault type
code
Over-voltage during
OV1
acceleration
Over-voltage during
OV2
deceleration
Over-voltage during
OV3 constant speed
Over-current during
OC1
acceleration
Over-current during
OC2
deceleration
Over-current during
OC3 constant speed
Bus undervoltage
UV
OL1 Motor overload
OL2 VFD overload
Phase loss on input
SPI
Deceleration time is too
short;
Exception occurred to input
voltage;
Large energy feedback;
Lack of braking units;
Dynamic brake is not
running
enabled
Acceleration is too fast;
Grid voltage is too low;
VFD power is too small;
Load transient or exception
occurred;
To-ground short circuit or
output phase loss occur;
Strong external interference
sources;
running
Overcurrent stall protection
is not enabled
Grid voltage is too low;
Overvoltage stall protection
fault
is not enabled
Grid voltage is too low;
Rated motor current is set
improperly;
Motor stall or load jumps
violently
Acceleration is too fast;
The motor in rotating is
restarted;
Grid voltage is too low;
Load is too large;
Power is too small;
Phase loss or violent
fluctuation occurred to R, S
side
and T input
Possible cause
-239-
Troubleshooting
Corrective measures
Check input power;
Check whether load
deceleration time is too short;
or the motor starts during
rotating;
Install dynamic braking units;
Check the setup of related
function codes
Increase acceleration
/deceleration time;
Check input power;
Select the VFD with 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 setup of related
function codes.
Check grid input power;
Check the setup of related
function codes
Check grid voltage;
Reset rated motor current;
Check the load and adjust
torque boost
Increase acceleration time;
Avoid restart after stop;
Check grid voltage;
Select the VFD with larger
power;
Select proper motor
Check the input power;
Check installation wiring