Indicates that the control expected a specific feedback signal indicating that the spindle amplifier was switched from one state (e.g., motor 1) to another (e.g., motor 2), or from one gear range to another, but did not receive it within the set time.
Last month, a customer called with a 7115 alarm on their lathe. The line read G70 P100 Q200 . The P and Q were fine. But I noticed the line before: G72.2 . Their control had but not type III. Simply changing G72.2 to G72.1 (or removing the .2 ) solved the entire problem. fanuc 7115 alarm
When alarm 7115 appears, follow this structured approach to identify and resolve the issue. The process assumes you have access to the machine’s alarm history and PMC diagnostic screens. Indicates that the control expected a specific feedback
Inspect the cable track (cat track) for areas where cables may be pinched, kinked, or frayed. The P and Q were fine
The internal control board cannot properly regulate the voltage passing through the IPM.
To resolve the FANUC 7115 alarm, follow these troubleshooting steps: