Make checking way lube levels and incoming air pressure a mandatory task for operators before hitting Cycle Start on the first shift.
: The door closed detection signal was lost while the machine was supposed to be running.
The control detects that the front operator door is open during a cycle, or the safety switch is malfunctioning.
The vast majority of EX alarms are preventable. Implement these routines to keep your shop running smoothly: mori seiki ex alarm list
The sensor monitoring the internal drawbar mechanism detects that the tool is still clamped when it should be released, or vice versa.
Clean chips out of door tracks and wipe down all visible proximity switches. Hydraulic Units
Always start by verifying the obvious: hydraulic fluid levels, door closures, and chip conveyor jams. When those fail, access your machine’s PMC message history or log into the DMG MORI service portal with your serial number. For the rare, undocumented EX alarm, reading the PLC ladder directly is your ultimate fallback. Make checking way lube levels and incoming air
Check all E-stop buttons (including bar feeder or conveyor). Lubrication Level Low
: Indicates a communication breakdown or power fluctuation at the operator panel. 2. Spindle & Drive Unit Diagnostics (EX0400 – EX0499)
Open the electrical cabinet at the back of the machine. Look for any yellow or red fault lights on the motor starter overloads or standard relays. The vast majority of EX alarms are preventable
If you want, I can:
– Cycle start was attempted while the write-protect key was in the "ON" position. Chuck Unclamped
Complete Guide to Mori Seiki EX Alarms: Troubleshooting and Fixes