| EX Alarm | Typical Message | Common Cause | |----------|----------------|---------------| | EX1001 | DOOR OPEN | Safety interlock – door switch open during auto operation. | | EX1002 | TOOL LIFE OVER | One or more cutting tools have exceeded their preset tool life (counts or time). | | EX1003 | LOW AIR PRESSURE | Air supply < 0.4-0.5 MPa. Pneumatic chuck/clamp cannot actuate. | | EX1004 | CHUCK UNCLAMPED | Chuck unclamp confirmation sensor not made. | | EX1005 | TAILSTOCK NOT RETRACTED | Tailstock quill not fully back during part unload. | | EX1006 | COOLANT LEVEL LOW | Coolant tank level below minimum sensor. | | EX1007 | HYDRAULIC UNIT OVERTEMP | Hydraulic oil temp > 55°C (131°F). | | EX1008 | SPINDLE OIL FILTER CLOGGED | Spindle oil filter differential pressure high. | | EX1009 | CHIP CONVEYOR OVERLOAD | Chip conveyor motor thermal overload relay tripped. | | EX1010 | BAR FEEDER ALARM | External bar feeder fault (e.g., bar empty, feeder misaligned). | | EX1011 | LUBRICATION PRESSURE LOW | Centralized lube pump pressure switch open. | | EX1012 | SPINDLE ORIENTATION FAIL | M19 spindle orientation not completed within time. | | EX1013 | TOOL CLAMP/UNCLAMP ERROR | ATC (automatic tool changer) – tool not clamped or unclamped correctly. | | EX1014 | COUNTER SPINDLE SYNCHRO FAIL | C-axis or spindle sync error on twin-spindle lathe. | | EX1015 | SAFETY CIRCUIT TRIPPED | Emergency stop button, light curtain, or safety relay open. |
Mori Seiki controls categorize alarms using specific prefixes to help maintenance teams quickly isolate the issue:
While many basic codes are universal, some EX codes vary slightly depending on whether you are operating a multi-axis lathe, a horizontal machining center (HMC), or a vertical machining center (VMC). Universal Troubleshooting Framework for EX Alarms
On the CNC display screen, you will typically see an alarm message such as: mori seiki ex alarm list
Adjust the proximity switches on the back of the hydraulic actuator cylinder at the rear of the spindle. Ensure your part diameter matches the stroke position configured for the clamp switches. EX0451 / EX451: Tailstock Quill Position Error
Among these, are some of the most common. Understanding how to read, diagnose, and clear these alarms is critical to minimizing downtime and maintaining production efficiency. What is a Mori Seiki EX Alarm?
Occurs often after power-on. A simple cycle of opening and closing the front door will clear this. | EX Alarm | Typical Message | Common
A: You must first follow your machine's "disaster recovery" or "emergency recovery" procedure. This almost always involves referencing specific axes to their home positions, re-establishing the tool magazine status, and confirming the tool changer arm and pallet changer positions. Attempting to just reset and restart will often create mechanical collisions.
Watch the bits change from 0 to 1 as you manually toggle the physical switch to see if the control registers the change. 3. Verify Hardware Power and Relays
Entry-level Dura series share simpler alarms: Pneumatic chuck/clamp cannot actuate
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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
The turret station number is out of the parameter range set for the machine. MILL SPINDLE ALARM A fault in the milling spindle amplifier or drive unit. EX1001 HYDRAULIC UNIT ALARM
| EX Alarm | Typical Message | Common Cause | |----------|----------------|---------------| | EX1001 | DOOR OPEN | Safety interlock – door switch open during auto operation. | | EX1002 | TOOL LIFE OVER | One or more cutting tools have exceeded their preset tool life (counts or time). | | EX1003 | LOW AIR PRESSURE | Air supply < 0.4-0.5 MPa. Pneumatic chuck/clamp cannot actuate. | | EX1004 | CHUCK UNCLAMPED | Chuck unclamp confirmation sensor not made. | | EX1005 | TAILSTOCK NOT RETRACTED | Tailstock quill not fully back during part unload. | | EX1006 | COOLANT LEVEL LOW | Coolant tank level below minimum sensor. | | EX1007 | HYDRAULIC UNIT OVERTEMP | Hydraulic oil temp > 55°C (131°F). | | EX1008 | SPINDLE OIL FILTER CLOGGED | Spindle oil filter differential pressure high. | | EX1009 | CHIP CONVEYOR OVERLOAD | Chip conveyor motor thermal overload relay tripped. | | EX1010 | BAR FEEDER ALARM | External bar feeder fault (e.g., bar empty, feeder misaligned). | | EX1011 | LUBRICATION PRESSURE LOW | Centralized lube pump pressure switch open. | | EX1012 | SPINDLE ORIENTATION FAIL | M19 spindle orientation not completed within time. | | EX1013 | TOOL CLAMP/UNCLAMP ERROR | ATC (automatic tool changer) – tool not clamped or unclamped correctly. | | EX1014 | COUNTER SPINDLE SYNCHRO FAIL | C-axis or spindle sync error on twin-spindle lathe. | | EX1015 | SAFETY CIRCUIT TRIPPED | Emergency stop button, light curtain, or safety relay open. |
Mori Seiki controls categorize alarms using specific prefixes to help maintenance teams quickly isolate the issue:
While many basic codes are universal, some EX codes vary slightly depending on whether you are operating a multi-axis lathe, a horizontal machining center (HMC), or a vertical machining center (VMC). Universal Troubleshooting Framework for EX Alarms
On the CNC display screen, you will typically see an alarm message such as:
Adjust the proximity switches on the back of the hydraulic actuator cylinder at the rear of the spindle. Ensure your part diameter matches the stroke position configured for the clamp switches. EX0451 / EX451: Tailstock Quill Position Error
Among these, are some of the most common. Understanding how to read, diagnose, and clear these alarms is critical to minimizing downtime and maintaining production efficiency. What is a Mori Seiki EX Alarm?
Occurs often after power-on. A simple cycle of opening and closing the front door will clear this.
A: You must first follow your machine's "disaster recovery" or "emergency recovery" procedure. This almost always involves referencing specific axes to their home positions, re-establishing the tool magazine status, and confirming the tool changer arm and pallet changer positions. Attempting to just reset and restart will often create mechanical collisions.
Watch the bits change from 0 to 1 as you manually toggle the physical switch to see if the control registers the change. 3. Verify Hardware Power and Relays
Entry-level Dura series share simpler alarms:
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
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
The turret station number is out of the parameter range set for the machine. MILL SPINDLE ALARM A fault in the milling spindle amplifier or drive unit. EX1001 HYDRAULIC UNIT ALARM