Fanuc alarm
An axis that should be standing still has drifted further from its commanded position than the limit set in the parameters.
An axis that should be standing still has drifted further from its commanded position than the limit set in the parameters. The control stops everything so the axis can't creep into the part or fixture.
Lock out the machine before reaching into it. Never bypass a door switch or interlock to clear an alarm.
If the axis drifts, the coupling may be loose, or the alarm keeps coming back, have a tech check the brake, coupling and servo tuning before the axis drops or crashes.
CNC, press brake and full machine repair across Illinois and Wisconsin
Alignment & Laser Calibration · Control & Electronics Repair · Crash Recovery · Hydraulics & Lubrication · Machine Moving & Installation · Press Brake & Fab Equipment
On-site CNC and plant equipment repair across Illinois, with 30+ years of tech experience
Control & Electronics Repair · Crash Recovery · Hydraulics & Lubrication · Press Brake & Fab Equipment · Preventive Maintenance · Retrofits & Control Upgrades
Wisconsin-owned CNC repair with teams in Milwaukee, Madison and Green Bay
Control & Electronics Repair · Crash Recovery · Hydraulics & Lubrication · Press Brake & Fab Equipment · Preventive Maintenance · Retrofits & Control Upgrades
An axis that should be standing still has drifted further from its commanded position than the limit set in the parameters. The control stops everything so the axis can't creep into the part or fixture.
A vertical axis brake not holding, or a failing counterbalance (Z axis or a heavy headstock). Coupling between the servo motor and ballscrew slipping. Axis binding from tight gibs, chips under the way covers or dry ways. Servo motor, encoder or amplifier fault. Gain or position error parameters changed.
Note which axis the alarm names. Check way lube level and that lube is actually reaching the ways. Look for chips or damage under the way covers. On a vertical axis, watch whether it drops slightly at power off or E-stop. Think back: was there a crash or a parameter change recently?. If the axis drifts, the coupling may be loose, or the alarm keeps coming back, have a tech check the brake, coupling and servo tuning before the axis drops or crashes.
Alarm numbers and text can differ by control model, software version and machine builder. This page is a starting point from people who have worked on these machines, not a replacement for your machine builder's manual.
Free for shops that need a repair. We pass your request to repair techs who cover your area and fix your brand. They reach out to you directly.
The leading CNC machine repair directory and a leading machine shop and repair magazine. We help shop owners, consumers and manufacturers find trusted repair, and keep the industry informed with the latest news, trends and headlines. Run by people who have worked in machine shops and run maintenance.
