To make the parameter "better," the user must understand the specific bit settings within the 8-digit binary (or hexadecimal) value.
However, always pair this adjustment with proper AICC configuration, appropriate acceleration limits (parameter 1735), and the right precision level for your application. The best results come from a — test, measure, adjust, and repeat.
If the fan is not spinning, purchase a replacement fan (often available from Fanuc parts suppliers or industrial supply houses) and replace it immediately. fanuc parameter 8901 better
Incorrectly setting parameters can cause unpredictable machine movement or damage. Ensure you understand the function before modifying. Always return the parameter to 0 once a new fan is installed. How to Modify Fanuc Parameters
Newer FANUC controllers (30i/31i/32i/35i-B series) support substantially larger look-ahead counts — up to 1,000 blocks under certain AICC II configurations [20†L12-L14]. For AICC (AI Contour Control) operations, typical practical ranges for 3D finishing are 100–400 blocks, though this varies by application. To make the parameter "better," the user must
The alarm is suppressed. This allows the machine to continue operating even if the system detects a fan failure. How to Use Parameter 8901 to Resolve ALM 701
: It allows you to finish the specific job or complete a critical toolpath instead of leaving a workpiece ruined or trapped in the machine. If the fan is not spinning, purchase a
Fanuc Parameter 8901 is a diagnostic parameter used to manage the monitoring of the fan motor within the CNC control cabinet. Specifically, bit 0 of this parameter (8901#0) is designed to ignore or "shield" the fan alarm.