Yaskawa MP940 - Manual (Page 372)

10.2 Troubleshooting
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10.2 Troubleshooting
This section describes causes and remedies for problems which cause an alarm display and for
problems which result in no alarm display.
10.2.1 Troubleshooting Problems with Alarm Displays
Problems that occur in the Servodrivers are displayed on the panel operator as “A. †† " or
“CPF †† ". “A.- -”, however, does not indicate an alarm. Refer to the following sections to
identify the cause of an alarm and the action to be taken.
Contact your Yaskawa representative if the problem cannot be solved by the described pro-
cedures.
„ A.02
A.02: Parameters Breakdown
Display and Outputs
Note: OFF: Output transistor is OFF (alarm state).
Status and Remedy for Alarm
Alarm Outputs
Alarm Code Outputs
ALM Output
ALO1 ALO2 ALO3
OFF OFF OFF OFF
Cause Remedy
A Power turned OFF during parameter write.
Alarm occurred at next power ON. Replace SERVOPACK.
B Circuit board (1PWB) defective. Replace SERVOPACK.
A, B At power ON