On Mori Seiki machines (typically using MAPPS interfaces or Fanuc controls), EX alarms 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 Mori Seiki EX alarm list is a valuable resource for machine operators, providing a comprehensive guide to troubleshooting and resolving issues. By understanding the alarm codes and messages, operators can quickly identify and address problems, minimizing downtime and optimizing machine performance. Regular review of the alarm list, combined with best practices for troubleshooting and maintenance, can help ensure the Mori Seiki EX machine runs smoothly and efficiently.
But the story didn't end there. Kenji cleared the chip and tried a reset. The EX 1047 cleared. Then, a new alarm flickered: EX 2128: COOLANT LEVEL LOW (TANK 2). Annoying, but not the killer. He filled the tank. Then came EX 0912: SPINDLE OIL FILTER CLOGGED (PREDICTIVE). mori seiki ex alarm list
After registering your machine serial number, download:
EX0451: SPINDLE DRIVE UNIT ALARM – Indicates a fault within the spindle amplifier or drive circuitry. On Mori Seiki machines (typically using MAPPS interfaces
Common Mori Seiki Ex Alarms
Sometimes the display only shows: EX1051 ... No PLC message configured. In this case, you need to read the PMC diagnostic bits. Alarm 102: Position Error Part 6: Advanced Troubleshooting
Mori Seiki "EX" alarms are PLC-related messages that originate from the machine tool builder rather than the underlying CNC control (such as Fanuc or Mitsubishi). These alarms typically indicate mechanical, electrical, or sequence-related issues specific to the machine's peripheral hardware, such as the hydraulic unit, automatic tool changer (ATC), or door interlocks.