Wiring; General Rules And Regulations For Wiring - Siemens SIMATIC ET 200iSP Operating Instructions Manual

Wiring

5.1

General Rules and Regulations for Wiring

Introduction
As a component in plants or systems, the distributed I/O station ET 200iSP is subject to special
rules and regulations depending on its application. This chapter provides you with an overview
of the most important rules when integrating the ET 200iSP distributed I/O system in a plant
or system.
Specific application
Observe the accident prevention guidelines for specific applications, such as machine
directive. When laying cables and lines, observe the installation regulations in EN 60 079-14,
as well as country-specific regulations. When operating the ET 200iSP in areas with
combustible dust (Zone 21, Zone 22), you must also comply with EN 61241-14.
EMERGENCY STOP mechanisms in the safe area
Emergency stop devices as defined in IEC 204 (corresponds to DIN VDE 113) must remain
effective in all operating modes of the plant or system.
Startup of the system after certain events
The following table describes points to remember when your plant starts up following certain
events:
Table 5-1
If...
Startup after power dips or failure, Startup of ET
200iSP after bus communication was interrupted,
Startup after releasing the EMERGENCY STOP
mechanism,
ET 200iSP
Operating Instructions, 11/2017, A5E00247483-07
Startup of the system after certain events
then...
no dangerous states must result. If necessary,
force an EMERGENCY STOP!
There must not be an uncontrolled or undefined
startup.
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