YASKAWA SIEMENS CNC Series, Maintenance Manual, Serviceman Handbook

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How to use Digital Operation
12.2.1 Alarm Trace Back Mode
12-18
12.2.1 Alarm Trace Back Mode
On the alarm trace back mode, you can view the latest alarms up to ten so that you may
check what kind of alarms have occurred.
The alarm trace back data can not be cleared when the alarm reset is initiated or even when
the SERVOPACK power supply is cut off. This has no effect on the operation.
You can delete these data using the clear on the alarm trace back mode of the special mode.
See the section 12.2.2.
„ Check of alarm
To check the previous alarm, use the following procedure.
1. Select the axis you want to operate on the axis selection mode.
2. Press the [DSPL/SET] key and select "Indication of alarm trace back data (Fn000)" of
the auxiliary mode.
3. Press the [DATA/ENTER] key to view the alarm trace back data.
4. Press the [UP] or [DOWN] key to scroll the alarm occurence number. The alarm history
information is displayed.
The larger the number on the left-side digit is, the older the alarm is.
For the details about the alarm number, see 15 "Error diagnosis and Troubleshooting".
These are the digital operator relevant alarms. They are not stored in the trace back data.
If there occurs no alarm, the indication is displayed like following.
If there successively occurs the same alarm, that alarm trace back data is not updated. However, when
a single alarm code has two or more causes, that alarm code may be written in the alarm trace back
data in succession when the power supply is turned on or when an alarm is reset.
Digital operator communication error 1
Digital operator communication error 2
Content of alarm.
See the list of alarm.
The number is larger,
the older is the alarm
data.
Alarm trace back
display
INFO