LNS Alpha ST320 S2 - Page 128

9-22 CHAPTER 9: TROUBLESHOOTING
ALPHA ST320 S2
ALE22 :
Input power phase loss
Description
One phase of the input power is loss.
Clearing
Method
Turn ARST (DI signal) ON to clear the fault. This fault message can be removed
automatically after input power phase lost problem is solved.
Potential Cause
Checking Method
Corrective Actions
1.
Control power supply is in
error.
Check the power cable and
connections of R, S, T. Check
whether the power cable is
loose or the possible loss of
phase on input power.
If the fault does not clear even
when the three-phase power is
connected correctly, please
contact your distributor for
assistance or contact with
Delta.
ALE23 :
Pre
-
overload warning
Description
To warn that the servo motor and drive is going to overload. This alarm will display
before ALM06. When the servo motor reach the setting value of P1-56, the motor
will send a warning to the drive. After the drive has detected the warning, the DO
signal OLW will be activated and this fault message will display.
Clearing Method
Turn ARST (DI signal) ON to clear the fault or restart the servo drive.
Potential Cause
Checking Method
Corrective Actions
1.
The drive is going to overload. 1. Check the load condition of
the servo motor and drive.
2. Check the setting value of
P1-56. Check whether the
setting value of P1-56 is too
small.
1. Please refer to the
correction actions of ALE06.
2. Increase the setting value of
P1-56 or set P1-56 to 100
and above.