Mori Seiki Ex Alarm List Jun 2026

Do you need help finding the (way lube/hydraulics) for Mori Seiki machines? Share public link

Mori Seiki EX alarms are essential safeguards that prevent minor mechanical discrepancies from escalating into expensive mechanical crashes or catastrophic failures. By maintaining an updated collection of your machine’s specific ladder logic manuals, keeping sensors clear of debris, and training operators to read diagnostic bits, you can quickly diagnose and clear EX alarms, keeping your shop floor moving smoothly.

On most Mori Seiki machines (such as the NL, NLX, DuraTurn, and NHX series), EX alarms are displayed as a four-digit number (e.g., EX0451 or EX1024 ). The exact meaning of a specific code can vary slightly depending on: The specific machine model (Lathe vs. Machining Center)

Close all doors completely. Check the safety key switch alignment. Clean coolant residue and metal chips out of the physical door interlock switch. EX0173 / EX173: Lubrication Pressure Fault

The tailstock quill is either not forward against the part, or the pressure switch detects insufficient clamping force for machining. mori seiki ex alarm list

Triggered when an E-stop button is pressed or there is a fault in the E-stop circuit. EX0151 (Coolant Level Low):

Pneumatic pressure has fallen below the safe operating threshold .

The tool turret failed to completely seat or unseat during a tool change.

These errors prevent the spindle from starting if the workpiece is not securely clamped. Do you need help finding the (way lube/hydraulics)

Inspect and clean the high-pressure filters. Check for clogged nozzles or leaky seals. 2. Lubrication and Hydraulic Alarms (EX0200 - EX0399)

Alarm: 3002 / HOME POSITION NOT FOUND

These alarms protect the main moving components from thermal or mechanical destruction.

Coolant evaporated or splashed out during cutting. On most Mori Seiki machines (such as the

Comprehensive DMG Mori Seiki EX Alarm List: Troubleshooting and Solutions

Do not just look at the number. Read the short text next to the EX code on the screen. It often tells you exactly which part of the machine is sad. 2. Check the Ladder Diagram

Generated by Mori Seiki’s ladder logic. These point to mechanical switches, sensors, fluids, and safety guard violations. They typically range from EX0000 to EX3000+ depending on the machine generation (e.g., NL, NLX, DuraTurn, NH, NV series). Common Mori Seiki EX Alarm List & Solutions