Mori Seiki Ex Alarm List

| Component | Check | Prevents EX Alarm(s) | | :--- | :--- | :--- | | Hydraulic breather | Replace filter | EX1402, EX1425 | | Way lube tank | Refill, check for water contamination | EX1411 | | Chip conveyor motor | Clean swarf from limit switch | EX2010, EX2011 | | Turret coupling | Clean, light oil mist | EX1506 | | Door interlock switches | Test with meter for continuity | EX1001 |

: The safety interlock key was turned to "release" during an automatic cycle.

Triggered by low coolant levels in the main tank, high coolant temperature, or a tripped thermal overload on the coolant pump motor.

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This is just a draft, and you may need to modify it to fit your specific needs and requirements. Additionally, it's essential to consult the official Mori Seiki documentation and support resources for accurate and up-to-date information on alarms and troubleshooting procedures.

Moreover, the EX list aids in preventive maintenance. A recurring “EX0421 FILTER CLOG DETECTED” alarm, even after resetting, indicates a deeper issue—perhaps a failing pump or excessive debris in the system. By tracking which EX alarms occur most frequently, maintenance teams can shift from reactive repairs to data-driven predictive maintenance, addressing component wear before a catastrophic failure occurs.

: The door interlock bypass timer has expired during manual setup. Cycle the mode switch or close the door to reset. | Component | Check | Prevents EX Alarm(s)

The emergency stop circuit is open.

In the world of high-precision manufacturing, a CNC machine tool is far more than an assembly of motors, guides, and spindles; it is a complex, intelligent system capable of self-diagnosis. For operators and maintenance engineers of Mori Seiki (now DMG MORI) equipment, few tools are as vital as the . Far from a mere error catalog, this list represents the machine’s primary means of communicating its internal state, guiding users from the symptom of a sudden halt to the root cause of a malfunction. Understanding the structure, logic, and application of the EX Alarm List is not just a technical skill—it is fundamental to maximizing uptime, ensuring safety, and preserving the longevity of these sophisticated assets.

The hydraulic unit pressure has dropped below the safe operating threshold. Check the hydraulic oil level, the pressure gauge, and the pressure switch functionality. This link or copies made by others cannot be deleted

: If a code is ambiguous, technicians often use the NC Ladder screen to find the specific coil (e.g., M7429 for EX0406) triggering the alarm to identify the missing sensor or signal condition.

For detailed lists and diagnostic procedures, refer to these professional documentation sources:

Fix: Reverse the conveyor manually using the maintenance switch to clear jammed parts or heavy nests of stringy chips. Reset the thermal overload relay in the electrical cabinet.