Delta VFD2A7MS43ANSAA

Chapter 14 Fault CodesMS300
573
ID
Display on LCD Keypad
Fault Name
Fault Descriptions
28
Under current
(uC)
Low current detection
Action and Reset
Action Condition
Pr.06-71
Action Time
Pr.06-72
Fault Treatment Parameter
Pr.06-73
0: No function
1: Fault and coast to stop
2: Fault and ramp to stop by the 2
nd
deceleration time
3: Warn and continue operation
Reset Method
Auto
When Pr.06-73 = 3, uC is a “Warning”. The warning is automatically
cleared when the output current > (Pr.06-71+0.1A).
Manual
When Pr.06-73 = 1 or 2, uC is a “Fault”. You must reset manually.
Reset Condition
Immediately reset
Record
When Pr.06-71 = 1 or 2, uC is a “Fault”, and the fault is recorded.
Cause
Corrective Actions
Motor cable disconnection
Troubleshoot the connection between the motor and the load.
Improper setting of low-current
protection
Reset Pr.06-71, Pr.06-72 and Pr.06-73 to proper settings.
The load is too low
Check the load status.
Check if the motor capacity matches the load.