Mori Seiki Ex Alarm List (2027)

The EX series alarm list is robust for a lathe platform.

  • Alarm: 3002 / HOME POSITION NOT FOUND

    • | Alarm Code | Description | Probable Cause & Solution | | :--- | :--- | :--- | | E300 | Chuck Clamp/Unclamp Alarm | The machine cannot verify the chuck status.
    • Check the proximity switches inside the spindle nose (check for chips blocking the sensor).
    • Verify hydraulic pressure is sufficient. | | E305 | Spindle Rotating Interlock | The chuck was opened (or attempted to open) while the spindle was rotating.
    • Usually a safety logic error caused by a faulty switch or trying to force the door. | | E310 | Spindle Drive Alarm | Often linked to a Fanuc drive alarm (check the amplifier screen).
    • Could be overheating or encoder failure. | mori seiki ex alarm list

    | Alarm Code | Description | Probable Cause & Solution | | :--- | :--- | :--- | | E001 | Hydraulic Motor Overload | The hydraulic pump motor drew too much current.
    • Check the hydraulic oil level (is it low?).
    • Check for clogged suction filters.
    • Check the thermal breaker in the electrical cabinet. | | E003 | Hydraulic Pressure Drop | System pressure dropped below the set threshold while the pump was running.
    • Check for leaks in the lines.
    • Check the pressure switch setting.
    • Pump may be worn out. | | E004 | Lubrication Oil Low | The way lube reservoir is empty.
    • Refill the way oil (typically Mobil Vactra #2).
    • Check the float switch if the tank is full but the alarm persists. | | E005 | Lubrication Cycle Error | The system did not detect a pressure rise during the lube cycle.
    • Check if the lubrication pump is working.
    • Check for blocked lines or a broken distributor block. | The EX series alarm list is robust for a lathe platform

    Mori Seiki (now known as DMG Mori) is synonymous with high-precision, reliable CNC lathes, milling machines, and multi-tasking machining centers. However, even the most robust machines encounter errors. Among the various alarm groups (e.g., NC alarms, servo alarms, PLC alarms), the EX series alarms (External User Alarms) are the most common—and often the most misunderstood. Alarm: 3002 / HOME POSITION NOT FOUND

    If you have ever seen a red banner flashing "EX1002 TOOL LIFE OVER" or "EX1011 CHIP CONVEYOR STOP" on your MAPPS or Celos control, you have encountered an EX alarm. Unlike fatal system errors, EX alarms are typically user-defined or sensor-based signals that stop the machine to prevent damage or ensure safe operation.

    This article provides a complete Mori Seiki EX alarm list, categorized by machine series (NL, DuraTurn, NH, NMV, etc.), along with root causes, step-by-step troubleshooting, and preventive measures.