Basics - Siemens SIMATIC ET 200SP HA System Manual

4.2

Basics

In accordance with the standards for electrical devices, all components of the ET 200SP HA
distributed IO system are classified as open equipment.
Note
You must ensure the following for the operation of the ET 200SP HA:
● Only authorized, trained or authorized personnel have access to the IO devices (e.g.
protection by enclosure, control cabinet or control room).
● The ambient conditions for the IO devices have been taken into account in the plant (see
section "Mechanical and climatic environmental conditions (Page 143)").
ET 200SP HA Distributed I/O system
System Manual, 08/2019, A5E39261167-AD
Plant planning
4.2 Basics
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