: This guide is for informational purposes only. Always refer to your specific Mori Seiki or DMG MORI machine's official manuals for all safety procedures, exact specifications, and detailed troubleshooting steps. If you are unsure about any repair or adjustment, contact a qualified service technician.
To appreciate the EX Alarm List, one must first distinguish it from standard system alarms. A system alarm, often displayed as a numeric code (e.g., 1020, 2001), originates directly from the CNC controller (typically a Fanuc, Mitsubishi, or Siemens unit) and indicates a problem with the core control logic—such as an overloaded servo, a broken encoder, or a loss of reference position. These alarms are generic across many machine brands using the same controller.
The way lube pressure did not reach the required threshold within a set time after the pump turned on.
Do not just look at the flashing red light. Press the or [MESSAGE] key on your MAPPS/MSG control panel. Read the specific code and text. Many Mori Seiki machines provide a secondary status sub-code or bit indicator on this page that pinpoints the exact failed sensor. 2. Check Diagnostics (PC parameters) mori seiki ex alarm list
Alarm: 5005 / PLC COMMUNICATION ERROR
These errors relate to peripheral management, including chips, coolant, and temperature controls.
Wipe down door interlock keys and proximity switches to prevent chip build-up. Check way-lube and hydraulic fluid levels before turning on the spindle. : This guide is for informational purposes only
The turret failed to index within the allowed time. Check the index motor, hydraulic clamp/unclamp pressure, and turret sensors. Spindle & Gearbox Alarms
This guide is designed to help operators and maintenance technicians understand the alarm structure, common codes, and troubleshooting steps for Mori Seiki EX lathes (typically running on Mori Seiki MS/MSC or Fanuc-based controls).
Attempting to start the cycle while the chuck is not clamped. DOOR NOT CLOSED The front door is open during a cycle start command. DOOR LOCK TIME OVER To appreciate the EX Alarm List, one must
Mori Seiki machines have a built-in "Ladder" screen. This screen shows the electrical blueprint in real-time. Search for the EX alarm number in the ladder. Look at the line of symbols.
This article provides a comprehensive overview of the (also commonly found on DuraTurn and DuraVertical series), focusing on interpreting these "EX" codes and offering troubleshooting steps to get your CNC machine back into production.
Tell you which on specific models.
: Alarms like EX0557 (Lubricant) or EX2595 (Filter) are often simple maintenance reminders. Before calling a tech, verify oil levels and clean your filters .
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.