Fanuc Wn57 Override Function Is Active 2021 Jun 2026

Verify that the override function remains disabled on production machines.

The spindle speed override knob is dialed away from 100%. Dry Run Mode ( DRNcap D cap R cap N

The WN57 alarm typically appears under several circumstances: fanuc wn57 override function is active

In some cases, incorrect PMC parameter configurations can cause the override function to remain active even when not intended.

An operator has manually locked a feed rate or spindle speed override. Verify that the override function remains disabled on

Understanding and Troubleshooting the "FANUC WN57 Override Function is Active" Alert

Check if manual test modes are active. Turn off the switch or softkey. If you bypassed the door interlocks using a setup key switch, turn the key back to the locked automatic mode and close the machine doors. Step 3: Verify CNC Parameters and Signals An operator has manually locked a feed rate

In automated cells where a robot loads and unloads the FANUC CNC machine, the robot and CNC communicate via I/O signals. If the robot enters the work envelope, or if the safety gating is unlatched, the PLC/PMC ladder logic may trigger a temporary override function to slow down or hold machine axes. Diagnostic Steps: How to Troubleshoot WN57

Check the status LEDs or softkeys for . If illuminated, toggle it off.

Example 3 — Spindle tuning during finish pass

The rotary switch governing the spindle RPM is adjusted away from the 100% baseline. 2. PLC / PMC Interlock Logic