IAI America SCON-C - Manual (Page 176)

158
3.2.6 Alarm Signal (*ALM)
This signal will turn OFF when the SCON’s protective circuit (function) detects an error.
Function
This signal will turn OFF when any of the controller’s protective circuits (functions) actuates upon detecting an
alarm and the base cutoff function is executed.
Once the cause of the alarm has been removed, this signal can be turned ON by turning the RES (reset) signal
ON. (This does not apply to cold-start level alarms.)
When an alarm is detected, the ALM LED on the front face of the controller will illuminate. This LED remains unlit
in a normal state.
Caution:
 If a cold-start level error generates, turning the RES signal ON while the servo-on (SON) signal is
OFF will clear the error display. However, the alarm will generate again once the SON signal is
turned ON again.
 Alarm codes can be checked using the teaching pendant or PC software. The controller can store
up to 16 past alarms, with each alarm shown with the time of occurrence, to let you identify which
alarm occurred when.
Controller alarm list (PC software)
Time of
occurrence
Alarm
message
Alarm code