Fanuc 7115 Alarm -

: Internal 24VDC power supplies (like those from Izumi ) may be failing, preventing the contactors from pulling in.

The , specifically displayed as "7115 SPN 1: SP SWITCH CONTROL ALARM," indicates a failure in the spindle speed switching sequence. It primarily occurs when the spindle speed switching contactors fail to pull in or engage correctly during power-on or operation. Meaning of the 7115 Alarm fanuc 7115 alarm