Alarm — Fanuc 7115

: The spindle amplifier module might not be receiving the correct signal from the CNC control to switch the contactors.

. This occurs when the spindle switching conditions—often related to gear changes or high/low winding shifts—are not satisfied within a specified timeframe. Common Causes Winding Selection Failure: fanuc 7115 alarm

The solenoid valve that releases the brake/clamp might be stuck or sluggish. The CNC tells the valve to open, but the mechanical spool inside doesn't move fast enough, or the feedback sensor (limit switch) on the clamp cylinder is dirty or broken. : The spindle amplifier module might not be

| Attribute | Detail | | :--- | :--- | | | 7115 | | Alarm Message (Typical) | 7115 DISTANCE REF. POINT RETURN DIRECTION ERROR | | Appears On | FANUC Series 0i, 30i/31i/32i, 16i/18i/21i, Power Motion i, Robodrill, Robocut, Robonano | | Alarm Type | Servo / Axis Configuration Alarm | | Stop Type | Emergency Stop / Servo Disable (SV OFF) | Common Causes Winding Selection Failure: The solenoid valve

: Manually inspect the contactors for the spindle. Look for signs of burnt coils or mechanical jams that prevent them from pulling in.