Fanuc Parameter 8901 Better !!better!! -

There are two primary settings for Parameter 8901:

While effective on systems like the 0i-C , newer controls like the 0i-F or 31i-B may not allow this software-based bypass for certain hardware fans. How to Change Parameter 8901 fanuc parameter 8901 better

If you bypass the alarm, you must provide alternative cooling (like a temporary external floor fan) to prevent permanent damage to the CNC's internal electronics. There are two primary settings for Parameter 8901:

Fan detection is "shielded" or bypassed. This allows the machine to run even if the fan is faulty. When to Use It (and Why Be Careful) This allows the machine to run even if the fan is faulty

FANUC Parameter 8901 is used to control the handling of the ALM 701 (Fan Motor Overheat)

For detailed technical guidance, you can review the 70 Series Maintenance Training Manual or the FANUC CNC Controller Guide for a deeper look at controller hardware and software configuration.