P-2 DOOR INTERLOCK FUNCTION
<Potential hazards which are anticipated in the door interlock function and examples of
possible accidents>
1.
When the door interlock function is "RELEASED"
2.
When the single block function is set valid and the door interlock function is "RELEASED"
during automatic operation
When the door interlock function is "RELEASED" machine operation is permitted even when the
door is open. Due to this fact, the following human-caused or unexpected accidents described
below will occur.
In addition, with the door interlock function, if the single block function is made valid and the door
interlock function is "RELEASED" the door can be operated even while the machine is operating,
which causes the occurrence of the following human-caused or unexpected accidents described
below.
To prevent occurrence of such accidents and to allow safe operation of the machine, Mori
Seiki recommends to set the door interlock function to "VALID" when the machine is
operated.
Anticipated danger and possible accidents, which exist or will likely occur are described below.
1.
The operator will become entangled with the spindle
if the spindle starts while the operator is touching
the chuck or workpiece.
2.
The operator will become entangled with the spindle
if the operator touches the chuck or the workpiece
while the spindle is rotating.
The accidents described above, in which the operator
becomes entangled with the rotating parts of the machine,
will result in serious injury or death.
WARNING
Customers will machine a variety of workpiece types, and will therefore
use a variety of workpiece holding fixtures and cutting tools. Cutting
methods and cutting conditions will also vary depending on the
customer's own know-how and Mori Seiki cannot predict the details of
machining in all cases. It is, therefore, the customer's responsibility to
determine the relevant factors and ensure safe operation by avoiding
dangers that will otherwise occurring in machining.
