Mori Seiki Ex Alarm List Verified May 2026

This guide is designed to help operators and maintenance technicians understand the alarm structure, common codes, and troubleshooting steps for Mori Seiki EX lathes (typically running on Mori Seiki MS/MSC or Fanuc-based controls).

EX2042 – LOW AIR PRESSURE Cause: Main air supply below 0.4 MPa. Action: Check shop air supply; inspect filter regulator unit for leaks or blockage. mori seiki ex alarm list

• Description: Absolute encoder mismatch or initialization failure.
• Typical causes: Battery/backup loss, absolute value reset, encoder failure.
• First-line actions: Reinitialize encoder per manual, verify battery/back-up, contact service if persists.

EX0023: START INTERLOCK ON – An external signal (like an emergency stop on a barfeeder) is preventing the cycle from starting. This guide is designed to help operators and

Recommendations

Because these are machine-specific rather than control-specific, they vary between a Mori Seiki NLX lathe and an NHX machining center. Always refer to your machine’s specific Maintenance Manual for the definitive EX list tailored to your serial number. EX0023: START INTERLOCK ON – An external signal

Need a specific EX alarm explained? Leave your machine model and full EX message in the comments below, or consult your local DMG Mori technical support with the 4-digit code and alarm text exactly as shown on the screen.

• Description: Safety door open or switch fault.
• Typical causes: Door not closed, interlock switch failed.
• First-line actions: Close door, check interlock switch and wiring.