Fanuc Parameter 8901 Better [better] Instant

If you run a G84 rigid tapping cycle or simple G81 drilling, 8901=2 is terrible. The look-ahead will try to smooth the retract motion, potentially causing cross-threading.

Explain how to identify the for your machine. Give you maintenance tips to make your fans last longer. Tell you how to find the correct fan part number . Let me know how you'd like to proceed . Share public link

Return to the screen and change PARAMETER WRITE back to 0. fanuc parameter 8901 better

. If a fan fails or runs too slowly, the system will trigger , often halting the machine to prevent overheating. Value 1 (Bypass): Fan motor error is not detected

disables the detection of the control unit's cooling fan. This allows you to clear the "ALM701" or "701" alarm and keep the machine running temporarily if a replacement fan is not immediately available. Default State : The standard setting is If you run a G84 rigid tapping cycle

Set Parameter 1821 (Reference position) as usual.

Before making any changes, always back up your existing parameters via CF card or RS-232. Parameter 8901 directly affects motion planning — an incorrect value can cause unpredictable machine behavior or servo alarms. Give you maintenance tips to make your fans last longer

You have checked the fan and found it is actually spinning, but the sensor is faulty.