8901 Better ((exclusive)) - Fanuc Parameter

Select the soft key to enter the internal configuration tables.

Press the NO. soft key, enter 8901 , and press CURSOR DOWN .

Additionally, consider your parameter security strategy. If you have technicians who may inadvertently or intentionally modify 8901, you can lock it down by using protective parameters like to lock the SYSTEM key and 3292#7 to disable the parameter write switch, ensuring that 8901's settings remain protected from unauthorized access. fanuc parameter 8901 better

While changing this parameter can clear an immediate alarm, it should be done with caution:

8901 Name: Handling of acceleration/deceleration before interpolation / Look-ahead control settings. Function: This parameter configures the operational mode for the High-Speed Precision Contour Control (HPCC) or the AI Contour Control functions. It dictates how the CNC handles the look-ahead buffer and acceleration/deceleration interpolation. Select the soft key to enter the internal

The table below outlines the trade-offs of using Parameter 8901 to bypass an alarm versus performing an immediate hardware replacement. Operational Factor Parameter 8901 Set to 1 (Bypass) Parameter 8901 Set to 0 (Standard/New Fan)

: Keep the ambient temperature of your machine shop floor within safe operating thresholds. Avoid high-load machining routines that raise internal cabinet temperatures. Additionally, consider your parameter security strategy

If you truly want the behavior, combine 8901 with Parameter 4000#2 = 1 (high-speed rigid tapping mode) on 31i-B5 controls.

However, strict documentation should be provided to operators. If a setup person attempts to "clear the machine" by pressing Reset multiple times, they may be confused why the coordinate system hasn't cleared to Machine Zero. This is a minor training hurdle compared to the safety benefits provided.

Press the SYSTEM key, then the PARAM soft key. Type 8901 and press [NO. SRH] .

: Changing the value of bit 0 from 0 to 1 tells the control system to mask or temporarily bypass the hardware fan alarm. This allows the machine to keep running despite a detected fan failure. Step-by-Step Guide to Changing Parameter 8901