Fanuc 414 Servo Alarm Z Axis Detect Error -

The resistance values should be exceptionally low (typically under 5 ohms) and perfectly balanced within 5% of each other. An open circuit or imbalance means a burned motor winding. Step 4: Inspect and Isolate the Feedback Loop

Abnormal Current Offset. Points to internal hardware damage inside the servo amplifier. Most Common Root Causes

The optical or magnetic encoder mounted on the rear of the Z-axis servo motor has failed or suffered physical shock.

indicates insulation degradation or coolant inside the motor terminal box. Step 3: Check Phase-to-Phase Resistance fanuc 414 servo alarm z axis detect error

Ensure all cables connected to the Z-axis motor have a physical "drip loop" so that any coolant running down the cable drips off before reaching the electrical connector.

When the CNC screen displays , it means the main CPU has lost proper feedback communication with the Z-axis pulse coder (encoder) or has detected an abnormal electrical state within the feedback loop. Primary Causes of the Z-Axis Detect Error

If the alarm changes from Z-axis (414) to X-axis (414), the problem lies in the Z-axis cable, encoder, or scale. If the alarm stays on the Z-axis, the servo amplifier module itself is defective. Step 3: Inspect the Physical Cables Power down the machine completely. The resistance values should be exceptionally low (typically

This alarm typically presents as a sudden stop in the motor while operating or immediately upon powering on.

Understanding the root cause requires a systematic approach to troubleshooting the drive, the motor, and the feedback cables. 🔍 Understanding the 414 Alarm Code

. This alarm is often triggered by the CNC when it detects a high current or "detection system error" originating from the servo amplifier or feedback system. TIE Industrial Fanucworld Primary Causes for Z-Axis 414 Alarm High Current/Short Circuit: Often indicated by an 8, 9, or A Points to internal hardware damage inside the servo

module), you can swap axis control to isolate the amplifier.

Check the pulse coder cable (feedback cable). Ensure it is shielded and not running too close to high-voltage lines, which can cause electrical noise interference. 📋 Step-by-Step Troubleshooting Flow