Internal temperature too high; check cabinet filters and fans. OIL-AIR LUBRICANT PRESSURE LOW Low pressure in the lubrication system. HIGH-PRESS. COOLANT SYSTEM Abnormality detected in the high-pressure coolant unit. COOLANT UNIT FILTER
Cannot start spindle, cannot run program. Troubleshooting:
Below are frequently encountered Mori Seiki EX alarms and their general causes:
Adjust the sensor switches so they see when the chuck is open and closed. EX0401 / EX401: Door Interlock Open mori seiki ex alarm list
On Fanuc-based Mori Seiki controls, press the SYSTEM key, then the PMC softkey, and look for PMCDGN (Diagnostics) or STATUS .
are external Programmable Machine Control (PMC/PLC) error codes generated by the machine tool builder rather than the core CNC system. While standard NC alarms (like Fanuc or Mitsubishi system errors) indicate core controller faults, EX alarms explicitly signify issues with peripheral machinery, safety interlocks, hydraulics, sensors, and mechanical overloads managed by Mori Seiki's custom logic.
The chip conveyor motor drew too much current, indicating a mechanical jam. Internal temperature too high; check cabinet filters and
The high-pressure coolant system cannot reach or maintain the required pressure.
Chuck proximity switches are out of adjustment, or hydraulic pressure to the chuck is missing. 3. Axis & Travel Limit Alarms (EX0200 – EX0299)
pressed together with the O.T. release button after the hard O.T. limit switch has been. tripped. EX0064, AUTO-DOOR OPEN, ALM0064, EX0401 / EX401: Door Interlock Open On Fanuc-based
pressed together with the O.T. release button after the hard O.T. limit switch has been. tripped. EX0064, AUTO-DOOR OPEN, ALM0064,
: Cycle start attempted with the chuck open.