Okuma Alarm-B 2711 Door open
A spindle rotation command is designated with the machine door opened while the VAC motor is being prepared for operation.
Normally, if a spindle rotation command is designated while the VAC motor is being prepared for operation, alarm D 4213 “VAC motor not ready to start” will occur. The spindle will start after the operation preparation completion signal is turned on.
It is however very dangerous if the spindle starts with the machine door opened. To prevent it, this alarm occurs so that the spindle does not start even when the door interlock is OFF.
When the door interlock is ON, alarm A 1304 “Door interlock” will occur.
SPINDLE, M-TOOL SPINDLE