Siemens M7-400 Benutzerhandbuch

1-9

S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07

The S7-400/M7-400 programmable controllers are “open type” equipment to the
IEC 61131-2 standard and therefore adhere to the EU directive 73/23/EEC
“Low-Voltage Directive” and are UL/CSA certified as such.

To fulfill requirements for safe operation with regard to mechanical stability, flame
retardance, stability, and shock-hazard protection, the following alternative types of
installation are specified:

•

Installation in a suitable cabinet

•

Installation in a suitable housing

•

Installation in a suitably equipped, enclosed operating area.

In this section you will find information on the noise immunity of S7-400/M7-400
modules and on radio interference suppression.

All the components of S7-400/M7-400 systems meet the requirements of the
standards that apply in Europe provided they are installed in accordance with all
the appropriate regulations (see Installation Manual, Chapters 2 and 4).

Electromagnetic compatibility (EMC) is the ability of an electrical installation to
function satisfactorily in its electromagnetic environment without interfering with
that environment.

Personal injury or property damage can result.

Installation of expansions that have not been approved for the S7-400/M7-400 can
result in violations of the requirements and regulations for safety and
electromagnetic compatibility.

Use only expansions that have been approved for the system.