Operating Instructions

Fault Codes
Digital Keypad
311 | 443
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).
ID*
Display on LCD Keypad
Fault Name
Fault Descriptions
13
Low-voltage at constant
speed (Lvn)
DC bus voltage is lower than Pr.06-00 setting value at constant
speed
Action and Reset
Action level
Pr.06-00 (Default = depending on the model)
Action time
Immediately act when the DC bus voltage is lower than Pr.06-00
Fault treatment parameter
NA
Reset method
Manual reset
Reset condition
Reset when the DC bus voltage is higher than Pr.06-00 + 30V
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).
ID*
Display on LCD Keypad
Fault Name
Fault Descriptions
14
Low-voltage at stop (LvS)
DC bus voltage is lower than Pr.06-00 setting value at stop
Hardware failure in voltage detection
Action and Reset
Action level
Pr.06-00 (Default = depending on the model)
Action time
Immediately act when the DC bus voltage is lower than Pr.06-00
Fault treatment parameter
N/A
Reset method
Manual / Auto:
230V series: Lv level + 30 Vdc + 500 ms
460V series: Lv level + 60 Vdc + 500 ms
575V series: Lv level + 75 Vdc + 500 ms
Reset condition
500 ms