Seiki Ex Alarm List - Mori

The Ultimate Guide to the Mori Seiki EX Alarm List: Diagnostics and Solutions

Turret & Tooling Alarms

| Alarm Code | Description | Probable Cause & Solution | | :--- | :--- | :--- | | E100 - E103 | 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. |

Quick troubleshooting checklist (operators)

1. Stop machine motion; ensure safe state.
2. Note exact alarm code and message.
3. Check for obvious mechanical jams or safety triggers.
4. Power-cycle control if alarm persists after basic checks (when safe).
5. Inspect connectors, cables, and fuses related to alarmed subsystem.
6. If unresolved, document conditions and contact qualified service.

2. Clarity of Descriptions

This is the strongest point of the Mori Seiki documentation compared to some competitors. mori seiki ex alarm list

• Plain English: Unlike some Japanese manuals that suffer from poor translation (the infamous "Engrish"), the EX alarm descriptions are surprisingly clear. An alarm like "Turret Index Timeout" tells you exactly what failed: the turret tried to turn, didn't reach the position in time, and stopped.
• Actionable Advice: In the manual (and on-screen help), the alarm list usually provides a "Remedy" section. It doesn't just say "Low Pressure"; it says, "Check hydraulic unit pressure gauge; confirm pressure switch setting."

3.2 Mori Seiki DuraTurn / DuraVertical

Entry-level Dura series share simpler alarms: The Ultimate Guide to the Mori Seiki EX

• EX1030 – TOOL MARK NOT HIT: Turret indexing position confirmation missing. (Check turret proximity switch.)
• EX1031 – SPINDLE AIR PURGE ON: Interlock active during air blast – normal during cleaning cycle.
• EX1032 – COOLANT PUMP THERMAL: Pump overload. Clean or replace coolant filter.

Part 5: Step-by-Step Troubleshooting for Top 5 EX Alarms

Part 3: The Most Common Mori Seiki EX Alarm Codes (By Category)

Based on decades of field service reports, the following EX alarms represent over 80% of service calls. This curated list is a practical starting point before you open the full service manual. Stop machine motion; ensure safe state

3.4 Mori Seiki NMV / NVX (Vertical Machining Center)

• EX1050 – TOOL POT FALLEN: Tool pot in magazine is tipped down (common in bad tool unload).
• EX1051 – SPINDLE TAPER AIR BLOW TIMEOUT: Air blast stuck on – clogged solenoid.
• EX1052 – THROUGH SPINDLE COOLANT PRESS LOW: CTS pump or filter issue.

2. Encoder / Feedback Alarms

• Alarm: 2001 / FEEDBACK ERROR

  • Description: Position feedback inconsistent.
  • Typical causes: Encoder malfunction, loose cable, noise interference.
  • First-line actions: Inspect encoder connector, reseat cables, check shielding, run encoder diagnostics.

• Alarm: 2005 / ABSOLUTE ENCODER ERROR

  • Description: Absolute encoder mismatch or initialization failure.
  • Typical causes: Battery/backup loss, absolute value reset, encoder failure.
  • First-line actions: Reinitialize encoder per manual, verify battery/back-up, contact service if persists.