
B-63494EN/02 1.OVERVIEW
- 9 -
• Amplifiers (drive power modules) and motors must always be
replaced by the same equipment type or else the parameters will
no longer match the actual configuration and cause Dual check
Safety to respond incorrectly.
• There is a parameter that MCC off test is not to be made in the
self test mode at power-on as in the case of machine adjustment.
This parameter is protected, only changed by authorized person.
IF MCC off test is not conducted, MCC may not be off at stop
response is measured.
• During machine adjustment, an exact motion may be executed
incorrectly untie the safety functions setup correctly and confirm
test is completely.
• No alarm is issued even if a mismatch between <state of the
signal via the PMC> and <state of the signal via the FSSB> lasts
for the period of time set in parameter No. 13810 after the CNC
is started.
• No alarm is issued even if the operating mode is safety mode D
for the period of time set in parameter No. 13810 after the CNC
is started.
• No alarm is issued even if a mismatch between <state of the
signal via the PMC> and <state of the signal via the FSSB> lasts
for the period of time set in parameter No. 13810 after the ladder
is restarted.
• When bit 0 (NIO) of parameter No. 1909 is set to 1, no alarm is
issued even if there is a mismatch between <state of the signal
via the PMC> and <state of the signal via the FSSB> while the
PMC ladder is stopped.