Wiring And Assembly; General Rules And Regulations For Operating The Et 200S - Siemens SIMATIC ET 200S Operating Instructions Manual

Wiring and assembly

5.1

General rules and regulations for operating the ET 200S

Introduction
When operating the ET 200S distributed I/O system as part of a plant or system, special
rules and regulations have to be followed depending on the field of application.
This chapter provides an overview of the most important rules you must observe when
integrating the ET 200S distributed I/O system into a plant or system.
Specific application
Please observe the safety and accident prevention regulations applying to specific
applications (e.g. machine protection guidelines).
EMERGENCY-STOP devices
EMERGENCY-STOP devices according to IEC 204 (coincides with VDE 113) must remain
effective during all operating modes of the plant or system.
System Startup after Certain Events
The table below shows what you have to observe when restarting a plant after specific
events.
Start-up following a power drop or failure
Startup of the ET 200S follows an
interruption of the bus communication
Startup follows unlocking of the emergency
stop device
ET 200S
Operating Instructions, 08/2008, A5E00515771-06
If there is ... then ...
No dangerous operating states may occur. If
necessary actuate an EMERGENCY-STOP!
There must not be an uncontrolled or undefined
startup.
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