Kenji nodded. That was the real problem. The machine was smarter than the people maintaining it. He spent the next four hours replacing the oil filter, flushing the coolant tank, re-greasing the tool magazine guide rails, and resetting the servo load parameters. When he finally powered up the NTX 2000, the spindle roared to life, smooth as a whisper. He ran a test cycle. Tool change after tool change. No EX alarms. Just the clean, rhythmic thunk-thunk-whir of precision engineering.

To help find more specific answers, what is the showing on your screen? It would also help to know the model of your Mori Seiki machine and which control system (Fanuc, Mitsubishi, or MAPPS) it uses. Share public link

Kenji didn’t blame him. The "EX" in the alarm list stood for "External," a catch-all for everything the main NC (Numerical Control) couldn’t categorize. It was the machine’s shadow language, a place where hardware failures, PLC (Programmable Logic Controller) logic conflicts, and user errors all bled together. Unlike a simple "OVERLOAD" alarm, an EX alarm required detective work.

This guide to the Mori Seiki EX alarm list serves as a comprehensive technical reference, intended to be used alongside official machine documentation for accurate troubleshooting.

– The spindle failed to reach its oriented stop position within the set time. EX1037/1038/1040: Overload Alarms

The turret failed to rotate and lock into the next tool position within the allowed time.

The service engineer, Kenji Tanaka, had seen the inside of a thousand machine shops. Grease under his fingernails was a permanent feature, and the whine of a high-speed spindle was his lullaby. But the DMG Mori Seiki NTX 2000 on the floor of Tanaka Industries was different. It was a beast, a five-axis symphony of German precision and Japanese soul. And right now, it was singing a song of pure fury.

The door lock signal was not confirmed within the allowed time. PANEL ALARM General error with the flat operation panel or its I/O. ELECTRICAL CABINET OVER HEAT

A huge percentage of EX alarms are just the machine asking for food. Check the way lube, hydraulic oil, and coolant tanks first. 4. Clean the Sensors

Check for mechanical jams or heavy chip buildup behind the turret disk. Verify hydraulic pressure to the turret clamp/unclamp manifold. Step-by-Step EX Alarm Troubleshooting Framework

Manually index the ATC arm back to its home state using the maintenance panel controls. Clean chips off the arm orientation sensors. 6. Chip Conveyor and Peripheral Alarms (EX2000+) EX2021: Chip Conveyor Overload