
B-63494EN/02 3.SAFETY FUNCTIONS
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3.2 BEFORE USING THE SAFETY FUNCTION
3.2.1 Important Items to Check Before Using the Safety Function
When using the safety function for the first time upon assembly of the
machine, replacing a part, or changing a safety parameter (such as a
safety speed or safe range as described in Chapter 6), the user must
check that all safety parameters are correct and that all safety
functions are working normally. A return reference position must be
made on each axis. The user must also check the absolute position of
the machine. For details, see Chapter 7, "START UP."
3.2.2 MCC off Test of the Safe Stop Function
A MCC off Test of the safe stop function monitors the contact state of
the electromagnetic contactor (MCC), compares the state with a
command to the electromagnetic contactor, and checks that the safe
stop function works normally. The test must be carried out by the user
of the machine. This test must be carried out when the CNC is turned
on or when 24 hours have elapsed after the previous test is completed.
If the CNC is turned on or if 24 hours have elapsed after the previous
test is completed, a guard open request (protective door open request)
is not accepted until the test is performed.