90 VICSION VS500
8. TROUBLESHOOTING AND MEASURES
8.1 Protective functions and Countermeasures
Code
Faults
Probable Causes
Solutions
Fu.01
Over-current during
Acc
1、Acceleration time is too short.
1. Prolong the acceleration time
2、V/F curve is not suitable
2. Descend the torque boost or adjust the V/F curve
3、You hasn’t set the right motor parameters
3. Input motor’s parameter once again and do
4、User start rotating motor, but doesn’t set function of self-determination to parameter.
detect speed and restart.
4. To set function of detecting speed and restart
5、Value of torque boost set too high.
5. To decrease voltage of torque boost
6、Power grid voltage is too low
6. Check power grid voltage, and reduce power then use
Fu.02
over-current
during Dec
Deceleration time is too short.
Prolong the deceleration time
Fu.03
Over-current during 1. Load occurs mutation
Running or stopping 2. Power grid voltage is too low
1. Decrease load fluctuation
2. Check power supply voltage.
Fu.04
over-voltage
during Acc
1.Input voltage is too high
2. Power supply is switched on or off frequently.
1. Check power supply voltage
2.Decrease setting value of F4.11
3. Control the on-off of inverter by the control
terminal
Fu.05
over-voltage
during Dec
1. Deceleration time is too short.
2. Input-voltage is abnormal
1. Extend the deceleration time
2. Check power supply voltage
3. Install or select the brake resistance
Fu.06
over-voltage
during running
1. Power supply is abnormal
2. There are energy feedback load
1. Check power supply
2. Install or select brake resistor
Fu.07
over-voltage
during stop
Fu.08
Under-voltage
during running
Power supply is abnormal
1. Power supply is abnormal
2. There is great fluctuation of load into electric
network.
Fu.09
protective action of
inverter
1. Output is short-circuit or ground
2. Load is too heavy
Check power supply voltage
1. Check power supply voltage
2. Provide the power supply separately
1. Check wiring
2. Reduce the load
3. Check whether brake resistor is
short-circuit
Fu.10 Output grounding
1.The output terminal of inverter grounds
1. Check the connecting wire
2. The wire is too long between inverter and motor and 2. Shorten the connection wire or reduce the
the carrier frequency is too high.
carrier frequency.
Fu.11
Interfere of inverter
Fault action caused by disturbance of
electromagnetism
Fu.12
1. Load is too heavy.
2. Acceleration time is too short.
3. Torque boost is too high or V/F curve is not
Inverter over-loading suitable.
4. Voltage of Power supply is too low
5. User start rotating motor, but doesn’t set
function of detecting speed and restart.
Fu.13
Motor over-loading
1. Load is too heavy.
2. Acceleration time is too short.
3. The setting of protection factor is too small
4. Torque boost is too high or V/F curve is not
suitable.
Add absorb circuit around inverter
1. Reduce the load or replace with higher
capacity inverter.
2. Prolong Acc time.
3. Decrease the torque boost or adjusting
V/F curve.
4. Check Voltage of Power supply
5. To set function of detect speed and
restart
1. Reduce the load
2. Prolong Acc time
3. Increase the over-loading protection
factor of motor（ [F4.12]）
4. Decrease torque boost voltage and adjust
V/F curve.
VS500 series of general purpose inverter Duxe.ru
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