If you have multiple identical axes, you can swap the cables or drives. If the alarm stays on the Z-axis, the problem is the motor or cable; if it follows the drive, the amplifier is the culprit.
He turned the CNC back on. If the alarm stayed, the amplifier was blown. If it vanished, the problem was "downstream" in the cable or motor. The alarm disappeared. The amplifier was safe—for now. 3. The Culprit Found
Excessive friction or a "tight" axis brake can cause the motor to draw extra current, leading the amplifier to interpret it as an overload.
The is a critical diagnostic signal indicating an "abnormal current" or high-current fault within the digital servo system. This alarm specifically identifies that the CNC has detected an issue with the power supply or servo amplifier module for the Z-axis, often preventing the machine from operating to avoid hardware damage. Core Meaning and Triggers
: Turn off the CNC, disconnect the Z-axis motor power leads from the amplifier, and restart. If the 414 alarm persists, the is likely faulty. If it clears, the issue is in the motor or cables Test Insulation
| 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 |
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