Parameter 8901 Better: Fanuc
Instead of initiating a harsh E-stop, the system converts the critical hardware trip into a soft warning message.
By strategically using parameters like 8901 and adhering to strict maintenance protocols, operators can ensure a more reliable and productive machining environment.
Order a replacement fan immediately. Once the new fan is installed, to ensure the control unit is protected from future overheating. Disable Parameter Editing : fanuc parameter 8901 better
What are you trying to make? (e.g., faster tool changes, smoother surface finish, higher rapid rates) Are you looking to improve the servo motor response ?
If you are referring to a specific OEM parameter in the 8000 range, it often controls torque limiters or specific machine-related functions (like ATC speeds or ATC tool change optimization). ⚠️ Important Disclaimer Instead of initiating a harsh E-stop, the system
Often, the 701 alarm occurs because the heatsink behind the amplifier is "caked in goop," preventing effective cooling. Use compressed air to clean it thoroughly.
: Locate the PARAMETER WRITE field, move your cursor over it, and change the value from 0 to 1 . The machine will output a non-critical PWE warning alarm; this is normal. Once the new fan is installed, to ensure
Parameter 8901 works hand-in-hand with AICC/AIAPC (AI Contour Control / AI Advanced Preview Control). These technologies share the look-ahead buffer size defined by 8901 but add advanced trajectory planning algorithms [17†L9-L10]. For users with newer 0i-F or 31i systems, AICC I (G05.1 Q1) and AICC II are standard high-speed high-precision features [17†L6-L8]. FANUC explains: "AICC II is mainly oriented towards continuous small-segment mold processing and NURBS-based interpolation" [20†L10-L11].
Parameter 8901 is the key that grants the PMC direct authority over a specific axis. When configured correctly, this transforms a standard axis into an intelligent, ladder-controlled servo axis. Here is the methodology for implementing a "better" auxiliary axis using Parameter 8901:
