INVT Goodrive350-19 Series Operation Manual page 396

Goodrive350-19 series VFD
Fault
Fault type
code
Inverter unit
OUt2
Phase-V protection
Inverter unit
OUt3
Phase-W protection
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
IGBT module is damaged;
Misacts caused by
interference; drive wires are
poorly connected;
To-ground short circuit
occurs
Exception occurred to input
voltage;
Large energy feedback;
Lack of braking units;
Dynamic brake is not
enabled
running
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
Overvoltage stall protection
is not enabled
Grid voltage is too low;
Overvoltage stall protection
fault
is not enabled
Possible cause
- 389 -
Troubleshooting
Corrective measure
Replace the power unit;
Check drive wires;
Check whether there is strong
interference surrounds the
peripheral equipment
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