Chapter 14 Fault CodesMH300
ID No.
Display Fault Name Description
13
Low-voltage at
constant speed
(Lvn)
DC bus voltage is lower than Pr.06-00
at constant speed.
Action and Reset
Action condition Pr.06-00 (Default = depending on the model)
Action time Immediately act when DC bus voltage is lower than Pr.06-00.
Fault treatment parameter N/A
Reset method Manual reset
Reset condition Reset when DC bus voltage is higher than Pr.06-00 + 30 V
Record Yes
Cause Corrective Actions
Power-off Improve power supply condition.
Power voltage changes Adjust voltage to the power range of the drive.
Start up the motor with large
capacity.
Check the power system.
Increase the capacity of power equipment.
Sudden load
Reduce the load.
Increase the drive capacity.
DC bus Install DC reactor(s).
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