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Appendix: Description of alarm code of the MD320 Series inverter
Alarm Code Description of Fault
0 Normal, no fault alarm
1 Inverter unit is in protection
2 Acceleration over current
3 Deceleration over current
4 Constant speed over current
5 Acceleration over voltage
6 Deceleration over voltage
7 Constant speed over voltage
8 Control power supply fault
9 Under voltage fault
10 -
11 Motor overload
12 Lack phase at input side
13 Lack phase at output side
14 Module overheating
15 External device fault
16 Communication fault
17 -
18 Current detection fault
19 Motor auto tuning fault
20 PG fault
21 Data overflow
22 Inverter hardware fault
22 Grounding short circuit fault
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