Goodrive300-01A series VFD for air compressor
Fault information and fault handling
-102-
6 Fault information and fault handling
6.1 VFD faults and solutions
Fault contents and solutions for GD300-01A VFD are shown below.
Fault
code
Fault type
Possible cause
Solution
OUt1
Inverter unit U
phase protection
• Acceleration is too fast.
• Internal damage occurs to
the IGBT of this phase.
• Misacts caused by
interference.
• Drive wires are connected
improperly.
• Short-circuited to ground.
• Increase acceleration time.
• Replace power unit.
• Check the drive wires.
• Check whether peripheral
equipment suffers from
strong interference source.
OUt2
Inverter unit V
phase protection
OUt3
Inverter unit W
phase protection
OV1
Overvoltage at
acceleration
• Input voltage is abnormal.
• There is large energy
feedback.
• Check the input power.
• Check if the deceleration
time of the load is too short
or the motor starts during
the rotating, or dynamic
brake units needs to be
installed.
OV2
Overvoltage at
deceleration
OV3
Overvoltage at
constant speed
OC1
Overcurrent at
acceleration
• Acceleration or
deceleration is too fast.
• Grid voltage is too low.
• VFD power is too low.
• Load transients or is
abnormal.
• Short-circuited to ground,
output phase loss.
• There is strong external
interference.
• Increase acceleration
/deceleration time.
• Check the input power.
• Adopt the VFD with a larger
power.
• Check if the load is short
circuited (short circuited to
ground or between wires) or
stall occurs.
• Check the output wiring.
• Check if there is strong
interference.
OC2
Overcurrent at
deceleration
OC3
Overcurrent at
constant speed
UV
Bus undervoltage
fault
Grid voltage is too low.
Check the grid input power.
OL1
Motor overload
• Grid voltage is too low.
• Rated current of the motor
is set improperly.
• Motor stalls or load
transients.
• Check grid voltage.
• Reset rated current of the
motor.
• Check load and adjust
torque boost quantity.
Summary of Contents for GD300-01A
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