The amplifier shuts down immediately to prevent the Z-axis from crashing due to uncontrolled movement.
If Z axis is vertical (common in mills, machining centers): fanuc 414 servo alarm z axis detect error repack
For suspected motor-related faults:
Each bit indicates a specific failure mode. For example, if is "1," the servo amplifier detected abnormal current, typically caused by a short circuit in the motor power cables or a faulty power module inside the amplifier. If bit #6 (LV) is "1," you have a low voltage condition that may indicate an issue with the input power supply or a faulty amplifier power stage. The amplifier shuts down immediately to prevent the
The feedback device (pulse coder) on the motor might be failing, producing an erratic or weak signal that the amplifier cannot process. 4. Overload/Mechanical Binding if is "1