This actionable clarity transforms the alarm from a cryptic error into a guided troubleshooting step.
Spindle orientation or indexing failed to complete in the allowed time . Troubleshooting Steps
The machine detects that the operator door or a parts catcher/chute safety switch is open during automatic operation. mori seiki ex alarm list
Verdict: An indispensable diagnostic tool that prioritizes clarity and safety, though it requires a shift in thinking between machine-specific and control-specific errors.
Mori Seiki machine "EX" alarms generally refer to (Machine Alarms) defined by Mori Seiki rather than the standard NC alarms provided by the control manufacturer like Fanuc . These codes typically signal issues with peripheral machine functions such as sensors, door interlocks, hydraulics, and tool changers. Common EX Alarm Categories This actionable clarity transforms the alarm from a
EX Alarms, however, are unique to the machine builder. The "EX" stands for or, more accurately, Machine Builder-Specific Alarm . These alarms are programmed by Mori Seiki’s engineers within the ladder logic (PLC) of the machine. They monitor the peripheral systems—coolant pumps, chip conveyors, hydraulic units, door interlocks, tool changers, and lubrication systems. When an operator sees an alarm like “EX1040 SPINDLE UNIT LUBRICATION LOW,” this is not a generic controller alarm but a custom message created by Mori Seiki to pinpoint a condition specific to their machine’s design.
On Fanuc-based Mori Seiki controls, press the SYSTEM key, then the PMC softkey, and look for PMCDGN (Diagnostics) or STATUS . Common EX Alarm Categories EX Alarms, however, are
| 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. |