Yaskawa Sigma II Series Servo System - Manual (Page 431)

Sigma II User’s Manual Chapter 9: Inspection, Maintenance, and Troubleshooting
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9.2.5 Warning Displays
The correlation between warning displays and warning code outputs is shown in the
following table.
Warning Displays and Outputs
Warnings (Additional Warning Display) (Applicable only to SGDH
amplifiers with version # 33
or higher)
Warning
Display
Warning Code Outputs
Warning
Name
Meaning of Warning
ALO1 ALO2 ALO3
A.91 ON OFF OFF Overload
This warning occurs before either of
the overload alarms (A.71 or A.72)
occurs. If the warning is ignored and
operation continues, an overload
alarm may result.
A.92 OFF ON OFF
Regenerative
Overload
This warning occurs before the
regenerative overload alarm (A.32)
occurs. If the warning is ignored and
operation continues, a regenerative
overload alarm may result.
Warning
Display
Warning Code Output
Warning Name Cause
Corrective
Actions
ALO1 ALO2 ALO3
A.90 × × × Excessive
position error
warning
The position errors exceed the
setting in Pn51E.
Reduce the position
errors to the value
of Pn51E or less to
restore
automatically.