General Operating Rules And Regulations - Siemens SIMATIC PN Installation And Operating Manual

Connecting
3.1 Electrical isolation and grounding
3.1.2

General operating rules and regulations

Introduction
If they are part of plants or systems the modules described require adherence to specific
rules and regulations depending on the application.
The most important rules, which you must observe for safe integration into a plant or system,
are listed below.
Specific application
Please observe the safety and accident prevention regulations applying to specific
applications (e.g. machine protection guidelines).
EMERGENCY STOP equipment
EMERGENCY STOP devices according to IEC 6204 (coincides with VDE 113) must remain
effective during all operating modes of the plant or system.
System startup after certain events
The table below identifies situations you must pay attention to when the system starts up
after the occurrence of certain events.
When ...
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
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20
starting up after a voltage dip or
power failure,
starting up after bus communication
has been interrupted,
starting up after unlocking the
emergency stop device,
starting up without the IO Controller
activating the IO Devices,
...
no dangerous operating states may occur. If necessary
actuate an EMERGENCY-STOP!
the start up must always be controlled and defined.
Installation and Operating Manual, 06/2010, A5E00717043-04
PN/PN coupler