Alarm: 7001 / HYDRAULIC PRESSURE LOW
Often, a metal chip or a bent switch causes the alarm. Clean around the turret, ATC, and doors. 4. Summary Table of Common EX Alarms Alarm Code Description Typical Cause EX0069 Door lock time over Interlock solenoid or proximity switch failure. EX0095 Turret illegal movement Unclamp sensor failure or hydraulic pressure loss. EX1557 Coolant flow too low Clogged filter, low coolant, or faulty flow switch. EX4004 Please close the door Safety interlock preventing spindle rotation. EX3402 Spindle cooler flow off Low oil level in cooler or pump failure.
Do you need help finding the (way lube/hydraulics) for Mori Seiki machines? Share public link mori seiki ex alarm list
Every Mori Seiki machine is shipped with a "Maintenance Manual" or "Ladder Diagram" specific to its serial number. You can find digital versions or parts lists through Scribd or the DMG MORI Service Portal .
You can think of it as the difference between the CNC's operating system (NC alarms) and a custom application program running on that system (EX/PLC alarms). An EX alarm doesn't necessarily mean the CNC core has a fault; rather, it means the machine's unique "personality"—as programmed by Mori Seiki—has encountered an unexpected condition. This is why you won't find a single, universal list for all EX alarms from a Fanuc manual; it's machine-specific. Alarm: 7001 / HYDRAULIC PRESSURE LOW Often, a
Fix: Refill the coolant tank with the correct water/oil mixture. Clean chips away from the float switch if it is stuck in the down position. EX0300 - EX0599: Spindle and Axis Overload Alarms
| Alarm Code | Description | Probable Cause & Solution | | :--- | :--- | :--- | | | Turret Index Time Over | The turret could not reach the commanded position within the allowed time. • Stalled Motor: Check for mechanical jamming. • Sensor Issues: The turret may have physically locked, but the sensor didn't trigger. Clean the proximity switches. | | E110 | Turret Clamp Alarm | The turret failed to lock into position. • Check the "Turret Lock" proximity switch. • Check hydraulic pressure (if hydraulically clamped). • Mechanical debris between curvic coupling. | | E200 | Tool Post Overload | The live tooling motor (if equipped) or turret drive overloaded. • Check for seized bearings in the tool holder. • Reduce cutting forces. | Summary Table of Common EX Alarms Alarm Code
Look closely at the alarm screen. Mori Seiki MAPPS controls often provide a short descriptive sentence beneath the EX code. Note the exact wording. Step 2: Check the Physical Prerequisites
Turn off the conveyor power. Look inside the conveyor hopper and discharge chute for large nests of stringy chips, dropped parts, or tooling components jamming the hinge belt. Clear the jam and reset the thermal overload relay inside the main electrical cabinet. Prevention Strategy: Minimizing EX Alarms
Modern Mori Seiki machines utilize complex dual-channel safety circuits to protect operators.
Here is a categorized list of common EX alarms encountered on Mori Seiki machines, based on operational data and industry expertise.