Fault Diagnosis and Countermeasures MD280/MD280N User Manual
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Err40
If speed-up/speed-down time is too short
Check if the torque hoist or V/F
curve is proper
If the rotating motor is started
Increase speed-up/
speed-down time
Adjust the torque hoist
or V/F curve
Select rotation speed
tracking to start or start
after the motor stop
Fast current-limit and overtime fault
Yes
No
Yes
If it is overload
Increase the inverter
power
Yes
No
Yes
No
Ask for technical support
Fig.8-20 Fast current-limit and overtime fault
Fig. 8-20 Motor switching fault ˄Err41˅
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