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Sigma II User's Manual
9.2 Troubleshooting
This section describes causes and remedies for problems which generate an alarm display
and for problems which result in no alarm display.
9.2.1
Troubleshooting Problems with Alarm Displays
Problems that occur in the servodrives are displayed on the panel operator as
"A.oo" or "CPFoo". Refer to the following sections to identify the cause of an
alarm and the action to be taken.
Note: "A.- -", is not an alarm.
Contact Yaskawa if the problem has not been solved after following the described
procedures.
n
A.02
A.02: Parameter Breakdown
Display and Outputs
Status and Remedy for Alarm
Power turned OFF during param-
A
eter write. Alarm occurred at next
power ON.
Circuit board (1PWB) defective.
B
Alarm Outputs
Alarm Code Output
ALO1
ALO2
OFF
OFF
Note:
OFF:
Output transistor is OFF (alarm state).
At power ON.
Cause of the Problem
Chapter 9: Inspection, Maintenance, and Troubleshooting
ALM Output
ALO3
OFF
OFF
A, B
Solution
• Initialize parameters using
Fn005 and reinput user set-
tings.
• Replace servo amplifier.
Replace servo amplifier.
9-5
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