If a motor was recently serviced ("repacked" with grease, or encoder reseated) and a 414 appeared, it may be due to improper assembly, encoder misalignment, or grease contamination of the encoder disc. Step-by-Step Troubleshooting for 414 Z-Axis Alarm
: Contamination from cutting fluid, water, or oil entering the Z-axis motor junction box.
(If performed) Tested motor-to-ground resistance; results were [e.g., >500 MΩ].
You cannot fix a problem you do not understand. Here are the six primary reasons for this alarm, ranked by probability. fanuc 414 servo alarm z axis detect error repack
Wear on the ballscrew or an incorrectly set counterweight can cause the motor to strain excessively to hold the axis up.
Once you have resolved the immediate alarm, implement these preventive measures to avoid recurrence:
The Fanuc 414 servo alarm can be caused by a variety of factors, including: If a motor was recently serviced ("repacked" with
Using a multimeter set to AC voltage:
For the remainder of this article, references to "414 alarm" apply equally to the 434 Z-axis fault.
[Insert Machine Make/Model and Fanuc Control Series, e.g., Fanuc 18i-MB] You cannot fix a problem you do not understand
Before tearing down mechanical assemblies, execute this systematic isolation protocol to determine exactly where the fault lies.
Today, "repack" has evolved to mean: