Eaton PowerXL DA1 Communications Manual page 9

DANGER – CONTROL FAILURE
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When engineering your control diagram, make sure to take all
potential control path faults into account.
When it comes to critical control functions, make sure that a
safe state can be reached after a control path fails. –
Critical control function examples include:
• Emergency shutdown (emergency stop),
• Overtravel stop
• Power supply failure
• Restart.
Provide separate or redundant control paths.
Make sure that system control paths include communication
connections.
Take the effect of unforeseen transmission delays and
connection problems into account.
Carefully and individually test every implementation of a product
before putting it into operation.
Observe all general accident prevention and local safety
regulations.
Information for the USA:
For more information, please refer to the latest issue of
NEMA ICS 1.1, "Safety Guidelines for the Application, Installation,
and Maintenance of Solid State Control," and the latest issue of
NEMA ICS 7.1, "Safety Standards for Construction and Guide for
Selection, Installation, and Operation of Adjustable-Speed Drive
Systems."
In addition to property damage, failure to observe the
above instructions may result in serious bodily injury or
even death.
Modbus RTU for variable frequency drive DA1, DC1, DE1 09/16 MN040018EN www.eaton.com
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