Once you clear the 414 alarm and the Z-axis moves again, implement these habits:
The Z-axis is particularly susceptible to this alarm due to the constant stress of gravity and vertical movement. Common culprits include:
This is a great topic to dig into. The is one of the more common yet frustrating alarms on Fanuc-controlled CNC machines (like Mori Seiki, Haas (older models), Doosan, Mazak with Fanuc, etc.). fanuc 414 servo alarm z axis detect error
If coolant is found, dismantling and drying the motor may work, but internal winding damage might require replacement.
| Parameter | Function | Typical Value | | :--- | :--- | :--- | | 1828 | Allowable position deviation limit | 10,000 to 30,000 (in detection units) | | 2020 | Motor model ID code | Must match actual motor | | 2022 | Motor rotation direction | 111 or -111 | | 2084 / 2085 | Flex feed gain / Numerator | Match ballscrew pitch | Once you clear the 414 alarm and the
The alarm occurs immediately upon powering up the drives.
These parameters define the ratio between the motor and the ballscrew. If someone mistakenly changed these thinking they were speeding up rapid traverse, the CNC's expected position per pulse will be off by a factor of 2 or 10. When you try to move 1 inch, the control thinks the motor turned 10 revolutions, but the encoder says 1 revolution. Alarm 414. If coolant is found, dismantling and drying the
Test the insulation resistance of the Z-axis motor to ensure it isn't shorting to the ground. Conclusion