Mori Seiki Ex Alarm List

– The actual spindle RPM deviates significantly from the programmed speed, often due to excessive load or parameter errors. Hydraulic & Lubrication Alarms

Record each occurrence with:

Because EX alarms are governed by the PLC, you can look up the exact electrical input or output causing the fault. Navigate to the key on your control. Select the PMC or DIAGNOSTIC softkey.

turret, tool changer, lubrication system, or safety interlocks 🛠️ Common Mori Seiki EX Alarms Operational & Setup Alarms Need Zero-Return mori seiki ex alarm list

Every Mori Seiki machine is shipped with a "Maintenance Manual" or "Ladder Diagram" specific to its serial number. You can find digital versions or parts lists through Scribd or the DMG MORI Service Portal .

An error signal was received from an external bar feeder.

On Mori Seiki machines (typically using MAPPS interfaces or Fanuc controls), refer to External (PLC) Alarms . These are generated by the machine tool builder rather than the CNC control itself, usually relating to peripheral hardware like the chip conveyor, tool changer, or coolant system. Common Mori Seiki EX Alarm Categories – The actual spindle RPM deviates significantly from

Below is a reference for frequently encountered EX alarm codes found across Mori Seiki lathes and machining centers: Mori Seiki Alarm Codes Overview | PDF - Scribd

If the alarm is a safety or interlock issue, you may need to cycle the operator door or cycle the main power breaker to reset the safety relay module. Preventive Maintenance to Reduce EX Alarms

– The cycle was started without the front door being properly closed and locked. Select the PMC or DIAGNOSTIC softkey

Look for “ALARM LIST – EXTERNAL ALARMS”. Usually chapter 7 or 12.

No system is perfect, and the Mori Seiki EX list has its quirks: