The door was opened during a cycle or the lock sensor is dirty/misaligned. How to Troubleshoot EX Alarms
Alarm: 4001 / SPINDLE OVERSPEED
Way lube level is low and needs to be refilled . Spindle and Drive mori seiki ex alarm list
| Alarm Code | Probable Cause | Immediate Action | | :--- | :--- | :--- | | | Turret clamp failure (unclamped) | Check turret clamping proximity switch. Hydraulic pressure low? | | EX1506 | Turret index time out | Tool binding. Clean turret curvic coupling. Check turret motor brake. | | EX1522 | Live tool motor overload (C-axis tool) | Reset thermal overload relay in electrical cabinet. | | EX2501 | ATC (Auto Tool Changer) arm out of position | Return ATC arm manually using the hydraulic release button. | | EX2510 | Tool magazine not at position | Re-home magazine with M-code (M80/M81 on some Mori models). | The door was opened during a cycle or
Cycle start was activated before completing X and Z-axis zero returns after a machine lock cancel. EDITING SWITCH KEY IS ON Hydraulic pressure low
: Sudden drop in incoming air pressure.
Mori Seiki EX Alarm Codes Overview | PDF | Lubricant - Scribd