DOOR INTERLOCK FUNCTION P-1
1
DOOR INTERLOCK FUNCTION
This section describes the outline of the door interlock function and the potential hazards which
exist in the door interlock function.
The door interlock function is developed to ensure the operator's safety during machine operation.
Before starting the machine operation, make sure that the door interlock function is valid. When
the door interlock function is made valid, machine operation is enabled or disabled in response to
the closing or opening of the machine door. Spindle (or rotary tool spindle) rotation, turret
indexing, axis feed and other manual operations excluding mounting and removing of a workpiece
and all automatic operations are inhibited when and while the door is opened.
Although it is possible to release the door interlock function unavoidably, the operators must
understand that there are potential hazards, which will lead to serious injury or death, in carrying
out intended operation while the door is open. For this purpose, the indicator blinks in red and the
electronic buzzer beeps while the door interlock function is released.
This indicator and buzzer indication is given until the door interlock function is made valid again.
The operators must understand that there are various dangers when carrying out maintenance or
other work while the door interlock function is released and they must pay sufficient care under
such conditions. After completing the intended work with the door interlock function released,
make the door interlock function valid. Restart machine operation only after making sure that the
door interlock function is valid.
For details of the operation of the door interlock function and the restrictions on
machine operation, refer to page P-10 (4).
For the potential hazards (accidents caused by improper operation and those occurring
unexpectedly) that will occur if the machine is operated with the door open, the caution label as
indicated below is attached to the machine (front) door so that the operator may recognize the fact
that the door must be kept closed.
Explanation concerning the potential hazards and the meaning of the caution
label is given in the brochure titled "SAFETY GUIDELINES".
(WARNING label "Do not operate without shutting door.")
(H42245)
