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

5.1
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 have to observe when
integrating the ET 200S distributed I/O system in a plant or system.
Specific application
Observe the safety and accident prevention regulations for specific applications, e. g. the
machine protection directives.
Emergency stop devices
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.
System Startup after Certain Events
The following table identifies situations you must pay attention to when the system starts up
after the occurrence of certain events.
Startup follows a power dip or a power
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, 12/2005, A5E00515771-03
If there is ... then ...
Dangerous operating states must not occur. If
necessary, force an emergency stop!
There must not be an uncontrolled or undefined
startup.
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