INVT IPE300 Series, Opeartion Manual

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IPE300 series engineering VFD Troubleshooting
-247-
Fault
code
Fault
No.
Fault type Possible cause Solution
OUt3 3
Inverter unit
W-phase protection
interference;
Drive wires are poorly
connected;
To-ground short circuit occurs.
Check whether there is
strong interference
surrounding the peripheral
device.
OV1 7
Overvoltage during
acceleration
Exception occurred to input
voltage;
Large energy feedback;
Lack of braking units;
Dynamic brake is not enabled.
Check the input power;
Check whether load DEC
time is too short;
or the motor starts during
rotating;
Install dynamic brake
components;
Check the related function
code settings.
OV2 8
Overvoltage during
deceleration
OV3 9
Overvoltage during
constant speed
running
OC1 4
Overcurrent during
acceleration ACC/DEC is too fast;
The voltage of the grid is too
low;
VFD power is too small;
Load transient or exception
occurred;
To-ground short circuit or
output phase loss occurred;
Strong external interference
sources;
The overcurrent stall protection
is not enabled.
Increase ACC/DEC time;
Check the 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 related function
code settings.
OC2 5
Overcurrent during
deceleration
OC3 6
Overcurrent during
constant speed
running
UV 10
Bus undervoltage
fault
The voltage of the grid is too
low.
Overvoltage stall protection is
not enabled.
Check the grid input power;
Check the related function
code settings.
OL1 11 Motor overload
The grid voltage is too low.
The motor rated current is set
incorrectly.
Motor stall or load jumps
violently.
Check the grid voltage;
Reset the rated current of
the motor;
Check the load and adjust
torque boost.
OL2 12 VFD overload
ACC is too fast;
The motor in rotating is
Increase ACC time;
Avoid restart after stop;