Among the various alarm classifications, are unique. Unlike system or servo alarms that originate deep within the CNC control software or drives, EX alarms are generated by the machine's Programmable Logic Controller (PLC) or ladder logic. They generally point to issues with peripheral hardware, safety interlocks, fluid levels, or mechanical limits.
Alarm: 1011 / OVERLOAD (SPINDLE/SERVO)
Look at the proximity switches on the chuck, turret, or doors. Clean away accumulated metal chips or sludge that might be fooling the magnetic sensors. mori seiki ex alarm list
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 Mori Seiki machines (typically using MAPPS interfaces or Fanuc controls), refer to External (PLC) Alarms . These are generated by the machine tool builder rather than the CNC control itself, usually relating to peripheral hardware like the chip conveyor, tool changer, or coolant system. Common Mori Seiki EX Alarm Categories Among the various alarm classifications, are unique
Hydraulic pressure gauges (typically should read between 3.5 to 4.5 MPa, depending on the machine manual).
– A spindle rotation command was given while the chuck was not securely clamped. Alarm: 1011 / OVERLOAD (SPINDLE/SERVO) Look at the
Clogged air filters, low chiller fluid, or a bad chiller pump.