Siemens S7-400 ユーザーズマニュアル

1-14

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

The S7-400/M7-400 is designed for weather-protected use as a permanent
installation. The S7-400/M7-400 fulfills the requirements for use in accordance with
IEC 60721-3-3:

•

Class 3M3 (mechanical requirements)

•

Class 3K3 (ambient climatic conditions)

The S7-400/M7-400, for example, must not be used without taking additional
measures:

•

In locations exposed to a high degree of ionizing radiation

•

In hostile environments caused, for instance, by

– Dust accumulation

– Corrosive vapors or gases

– Strong electric or magnetic fields

•

In installations requiring special monitoring, for example

– Elevators

– Electrical installations in particularly hazardous areas

An additional measure might be, for instance, installation of the S7-400/M7-400 in
a cabinet or in a housing.

The ambient mechanical conditions for S7-400/M7-400 modules are listed in the
following table in the form of sinusoidal oscillations.

Table 1-10 Mechanical Conditions

10 

≤

 f < 58

0.075 mm amplitude

58 

≤

 f < 500

1 g constant acceleration