Troubleshooting steps
Check servo amplifier status verify motor operation test encoder check wiring
FANUC
4002 – Servo alarm
Z axis servo alarm
Details
Z axis servo system detected alarm condition. Check servo amplifier.
Error typealarm
MeaningServo alarm
Typical causesServo amplifier fault motor fault encoder fault wiring fault
SolutionsCheck servo amplifier status verify motor operation test encoder check wiring
Severityhigh
Catalog references
System Information
FANUC4002
Utilities
Troubleshooting Steps
Related
Related FANUC Alarms
FAQ
Common questions
Which axis?
Check alarm message for Z axis
Community
Discussion & Experiences
Share your experience, solutions, or ask questions about this error code. Help others troubleshoot!
Loading comments...