Fanuc 7115 Alarm 'link' Jun 2026

If the alarm occurs immediately upon a spindle command, use a megohmmeter to check the motor windings for shorts to ground or between phases.

Setting 3004#5 = 1 masks the alarm but does not fix the underlying cause. It is acceptable on most standard machine tools but should be used with caution.

If the 7115 alarm is intermittent, examine the screen (typically under the ALARM or SYSTEM menu). Look for patterns:

Find the Fanuc spindle drive module (SPM). Check the front panel:

To minimize the risk of encountering the FANUC 7115 alarm, follow these best practices:

Mastering the FANUC 7115 Alarm: Causes, Troubleshooting, and Fixes