Mori Seiki Ex Alarm List ~repack~ | 2026 |

Proactive maintenance is the best defense against EX alarms. A regular schedule can prevent many common issues before they trigger a fault.

They typically trigger due to issues with sensors, limit switches, fluid levels, safety doors, or peripheral equipment (like chip conveyors and bar feeders).

Physical door is open, door switch is misaligned, or the safety interlock switch key is broken. EX0105: Door Interlock Released

Main pneumatic pressure supply has dropped below 0.4–0.5 MPa. mori seiki ex alarm list

The door is actually open, or the safety switch is dirty or broken.

It can be annoying to navigate. You often have to switch between the standard Fanuc alarm history and the specific "Maintenance" page on the Mori Seiki side to find the root cause of a stoppage.

Never let way lube or coolant drop near the critical minimum line. Establish a morning routine to top off all reservoirs. Proactive maintenance is the best defense against EX alarms

If an EX alarm stops your production line, follow these simple steps to find the root cause: 1. Read the Full Text

Machine-side hardware issues (e.g., hydraulics, doors, chip conveyors, coolant).

These are defined by Mori Seiki. They monitor things like door interlocks, hydraulic pressure, coolant levels, chuck status, and bar feeder sync. Physical door is open, door switch is misaligned,

Errors associated with indexing the turret on lathes or changing tools on machining centers.

Because EX alarms are driven by the machine's PLC, you can track down the exact failing sensor using the CNC's diagnostic parameters. Press the key on your control pad. Select the PMC or DIAGN (Diagnostic) softkey.

The coolant tank fluid volume has dropped below the safe operating limit.

Sometimes the display only shows: EX1051 ... No PLC message configured . In this case, you need to read the .

Fix: Close the door completely. If closed, verify the safety relay in the electrical cabinet is resetting.