The 414 alarm is a "digital servo alarm" that can stem from several areas:
To troubleshoot the Fanuc 414 servo alarm, follow these steps:
With the initial diagnostic data (amplifier display and DGN200 bits) in hand, the real work of pinpointing the failing component begins. The goal is to systematically isolate the fault to one of four main areas: the , the servo motor , the servo amplifier , or the control board/cable . fanuc 414 servo alarm z axis detect error
| Diagnostic No. | Meaning | Normal Range | | :--- | :--- | :--- | | DGN. 200 | Position error (current) | Should track command | | DGN. 203 | Command pulse count | Changes when moving | | DGN. 204 | Feedback pulse count | Must match 203 | | DGN. 205 | Load meter % | < 150% normal |
Fanuc 414 Servo Alarm signals a digital servo system fault on a specific axis—in your case, the The 414 alarm is a "digital servo alarm"
Verify that the incoming 3-phase power to the amplifier is balanced (typically 200-220V).
Once the diagnostic steps have isolated the failure point, proceed with the targeted remedy: | Meaning | Normal Range | | :--- | :--- | :--- | | DGN
If the alarm remains on the Z-axis, the internal circuitry of the servo amplifier module is likely damaged. 4. Check the Z-Axis Brake Circuit
Alarm 414 is a blanket servo alarm. It tells you where the problem is (the Z-axis) and what system is complaining (the detection circuit), but it does not specify the exact root cause.
Local Communication Error. Points to a built-in pulse coder failure.
: Internal failure of the Intelligent Power Module (IPM) or axis control card.