Mori Seiki Ex Alarm List
Look up the status of the inputs ( X addresses) and outputs ( Y addresses) relative to the component throwing the error.
Mori Seiki CNC machines are famous for their reliability and precision. However, when an EX alarm appears on your MSG or MAPPS control panel, production grinds to a halt. Unlike NC alarms (which relate to core Fanuc or Mitsubishi control system faults), EX alarms are external system alarms defined by Mori Seiki. They signal issues with the machine's peripheral hardware, safety switches, fluid levels, and mechanical systems.
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.
Always check oil, air, and coolant levels first for any code in the mori seiki ex alarm list
Watch the bits change from 0 to 1 as you manually toggle the physical switch to see if the control registers the change. 3. Verify Hardware Power and Relays
Mori Seiki controls categorize alarms using specific prefixes to help maintenance teams quickly isolate the issue:
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pressed together with the O.T. release button after the hard O.T. limit switch has been. tripped. EX0064, AUTO-DOOR OPEN, ALM0064,
Machining environments are highly volatile. Fine metal chips and heavy coolant spray frequently coat proximity switches (on the chuck, doors, and tool changers), causing false EX alarms. A quick spray of cleaner or a wipe down fixes a massive percentage of these errors. Summary Table: Quick Reference EX Alarm Code Common Meaning Primary Action EX0001 Door Interlock Error Clean door switch; ensure fully closed. EX0015 External Emergency Stop Reset all E-stops on machine & accessories. EX0151 Hydraulic Pressure Down Check hydraulic oil level and pump gauge. EX0170 Way Lube Low / Fault Refill way lubricant reservoir. EX0201 Coolant Level Low Add coolant; check float sensor for chip buildup. EX0310 Chuck Unclamp Fault Adjust actuator proximity switches; check stroke. EX0520 Turret Index Error Check for mechanical obstruction or low hydraulics. If you want to isolate a specific code, let me know: The exact EX alarm number showing on your screen
These errors ensure that workholding is secure before the spindle spins or axes move. Unlike NC alarms (which relate to core Fanuc
The coolant volume in the main reservoir tank has dropped below the safe operating float switch level.
Make checking way lube levels and incoming air pressure a mandatory task for operators before hitting Cycle Start on the first shift.
A critical feature of EX alarms is that they . The control is designed to physically prevent machine operation because proceeding without correcting the root cause could result in serious machine damage. When an alarm occurs, the screen automatically switches to the PLC alarm screen and displays the specific code and message. You can often press a [DETAIL] soft key for a more detailed explanation.