Inovance MD280NT3.7GB - 8.2 Common Faults and Solutions

Troubleshooting MD280 User Manual
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8.2 Common Faults and Solutions
If faults listed in the following table occur, you can perform initial fault analysis and
troubleshooting according to the corresponding instruction.
Table 8-2 Solutions to common faults of the AC drive
SN Fault Possible Causes Solutions
1
There is no
display at power-
on.
1. There is no power supply to the
AC drive or the power input to the
AC drive is too low.
2. The cable connecting the control
board and the drive board and the
operation panel breaks.
3. Components inside the AC drive
are damaged.
1. Check the power supply.
2. Re-connect the 8-core
and 16-core cables.
3. Contact the agent or
Inovance for technical
support.
2
"Err23" is
displayed at
power-on.
1. The motor or the motor output
cable is short-circuited to the
ground.
2. The AC drive is damaged.
1. Measure the insulation
of the motor and the output
cable with a megger.
2. Contact the agent or
Inovance for technical
support.
3
The AC drive
display is normal
upon power-
RQEXW³+&´LV
displayed after
running and the
AC drive stops
immediately.
The cooling fan is damaged or
locked-rotor occurs.
Replace the damaged fan.
4
(UUPRGXOH
RYHUKHDWIDXOWLV
reported frequently.
1. The setting of carrier frequency
is too high.
2. The cooling fan is damaged, or
WKHDLU¿OWHULVEORFNHG
3. Components inside the AC drive
DUHGDPDJHGWKHUPDOFRXSOHURU
RWKHUV
1. Reduce the carrier
IUHTXHQF\)
2. Replace the fan and clean
WKHDLU¿OWHU
3. Contact the agent or
Inovance for technical
support.
5
The motor does
not rotate after
the AC drive
runs.
1. The motor is damaged or
locked-rotor occurs.
2. The motor parameters are set
improperly.
1. Replace the motor or
clear mechanical faults.
Check and re-set motor
parameters.
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