Warning, Alarm Diagnosis And Counter Measures 193
V260 Series High Performance Closed-Loop Vector Inverter User Manual
Fault
code
Fault description
Possible causes
Solutions
Fu.004
Over voltage during
acceleration
1.
The input voltage is abnormal.
2.
The rotating speed closed loop
parameters are set improperly during
vector control operation.
3.
Start the rotating motor (without rotating
speed tracking).
1.
Inspect input power supply.
2.
Adjust rotating speed closed loop
parameters. Please refer to the
description of F8.1 parameter set.
3.
It is valid to set [F0.4.38] as 1;
Recover operation in the mode of
deceleration and restart after
power off.
Fu.005
Over voltage during
deceleration
1.
The deceleration period is too short.
2.
The load potential energy or inertia is too
large.
3.
The input voltage is abnormal.
1.
Adjust deceleration time.
2.
Connect braking resistor or unit
externally.
3.
Inspect input power supply.
Fu.006
Over voltage during
operation
1.
The input voltage is abnormal.
2.
The parameters of regulator are set
improperly during vector control
operation.
1.
Install input reactor.
2.
For adjusting parameters of
regulator, please refer to the
description of parameter set in
F8.1.
Fu.007
Over voltage when
shutting down
The voltage of the power supply is abnormal. Inspect voltage of power supply.
Fu.008
Under voltage
during operation
(can be shielded)
1. The voltage of the power supply is
abnormal.
2. Large load is started in the grid.
1. Inspect voltage of power supply
2. Supply power separately
Fu.011
Electromagnetic
interference
False operation caused by the surrounding
electromagnetic interference.
Seek for technical service
Fu.012
Overload of
frequency inverter
1. The load is overweight.
2. The acceleration period is too short.
3. The booster voltage of torque is too high
or V/F curve is set improperly.
4. The grid has over-low voltage.
5. Do not start rotating speed tracking restart
function and directly start the rotating
motor.
6. In closed loop vector mode, the direction
of pulse of the encoder is opposite to that
of the motor.
1. Reduce load or replace a
frequency inverter with larger
capacity.
2. Prolong acceleration time.
3. Reduce torque lifting voltage and
adjust V/F curve.
4. Inspect the voltage of grid
5. Set the starting/stopping mode
([F0.4.38]) as rotating speed
tracking restarting mode.
6. Check whether the encoder is
reverse.
Fu.013
Overload protection
action of motor
1. V/F curve is set improperly.
2. The grid has over-low voltage.
3. The motor is operated for long time with
low speed and large load.
4. The overload protection coefficient of the
motor is too small.
5. Locked-rotor operation of motor or
overlarge load.
6. In closed loop vector mode, the direction
of pulse of the encoder is opposite to that
of the motor.
1. Adjust V/F curve.
2. Inspect the input voltage of grid.
3. Select special motor for frequency
conversion for long-term low
speed operation.
4. Increase the overload protection
coefficient of the motor ([F2.0.25]).
5. Adjust the working conditions of
the load or select frequency
inverter with matched capacity
level.
6. Adjust the connection of encoder
or change the function setting for
direction of the encoder.
