Delta MS300 Series User Manual page 569

Chapter 14 Fault CodesMS300
ID Display on LCD Keypad
13
Action Condition
Action Time
Fault Treatment Parameter
Reset Method
Reset Condition
Record
Cause
Power-off
Power voltage changes
Start up the motor with large
capacity
Sudden load
DC bus
Fault Name
Low-voltage at
constant speed
(Lvn)
Action and Reset
Pr.06-00 (Default = depending on the model)
Immediately act when the DC bus voltage is lower than Pr.06-00
NA
Manual reset
Reset when the DC bus voltage is higher than Pr.06-00 + 30 V
Yes
Improve power supply condition.
Adjust voltage to the power range of the drive
Check the power system.
Increase the capacity of power equipment.
Reduce the load.
Increase the drive capacity.
Install DC reactor(s).
560
Fault Descriptions
DC bus voltage is lower than Pr.06-00 setting value at
constant speed
Corrective Actions