INVT Goodrive20-UL VFD Series Operation Manual page 112

Goodrive20-UL Series VFD
Fault
code
[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
[8] Overvoltage
OV2
during deceleration
[9] Overvoltage
OV3 during constant
speed running
Fault type
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Possible cause
interference;
The connection of the
driving wires is not
good;
Grounding is not
properly.
The acceleration or
deceleration is too
fast.
The voltage of the grid
is too low.
The power of the VFD
is too low.
The load transients or
is abnormal.
The grounding is
short circuited or the
output is phase loss.
There is strong
external interference.
The overvoltage stall
protection is not open.
The input voltage is
abnormal.
There is large energy
feedback.
No braking
components.
Braking energy is not
open.
-107-
Fault tracking
Solutions
wires;

Inspect external
equipment and
eliminate interference.

Increase the
time.

Check the
power.

Select the VFD with a
larger power.

Check if the load is
short circuited (the
grounding short
circuited or the wire
short circuited) or the
rotation is not smooth.

Check the output
configuration.

Check if there
strong interference.

Check the setting of
relative function
codes.

Check the input power

Check if the DEC time
of the load is too short
or the VFD starts
during the rotation of
the motor or it needs
to increase the energy
consumption
components.

Install the braking
components.

Check the setting of
relative function
codes.
ACC
input
is