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LOADING AND INSTALLATION
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EMC AND LOW
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10
LOADING AND
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11
MAINTENANCE AND
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12
TROUBLESHOOTING APPENDICES INDEX
CHAPTER10 LOADING AND INSTALLATION
In order to increase the reliability of the system and exploit the maximum performance of
its functions, this section describes the methods and precautions for the mounting and
installation of the system.
WARNING
When a safety programmable controller detects an error in an external
power supply or a failure in programmable controller, it turns off all the
outputs.
Create an external circuit to securely stop the power of hazard by turning
off the outputs. Incorrect configuration may result in an accident.
Create short current protection for a safety relay, and a protection circuit
such as a fuse, and breaker, outside a safety programmable controller.
When data/program change, or status control is performed from a per-
sonal computer to a running safety programmable controller, create an
interlock circuit outside the sequence program and safety programmable
controller to ensure that the whole system always operates safely.
For the operations to a safety programmable controller, pay full attention
to safety by reading the relevant manuals carefully, and establishing the
operating procedure.
Furthermore, for the online operations performed from a personal com-
puter to a safety CPU module, the corrective actions of the whole system
should be predetermined in case that a communication error occurs due
to a cable connection fault, etc.
All output signals from a safety CPU module to the CC-Link Safety mas-
ter module are prohibited to use.
These signals can be found in the CC-Link Safety System Master Mod-
ule User's Manual.
Do not turn ON or OFF these signals by sequence program, since turn-
ing ON/OFF these output signals of the programmable controller system
may cause malfunctions and safety operation cannot be guaranteed.
All output signals from a safety CPU module to the CC-Link IE Field Net-
work master/local module (with safety functions) are prohibited to use.
These signals can be found in the MELSEC-QS CC-Link IE Field Net-
work Master/Local User's Manual.
Do not turn ON or OFF these signals by sequence program, since turn-
ing ON/OFF these output signals of the programmable controller system
may cause malfunctions and safety operation cannot be guaranteed.