Siemens Simatic S7-300, Инструкция по установке и эксплуатации

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General technical data
7.6 Specifications for Nominal Line Voltages, Isolation Tests, Protection Class, and Degree of Protection
Fail-safe signal modules
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Installation and Operating Manual, 01/2010, A5E00085586-10
Climatic environmental conditions
Climatic environmental conditions for the operation of fail-safe signal modules:
Environmental conditions Fields of application Comments
Temperature:
Horizontal mounting position:
Vertical mounting position:
from 0°C to 60°C
from 0°C to 40°C —
Relative humidity from 5 to 95 % No condensation; corresponds to
relative humidity (RH) stress level
2 to IEC 61131-2
Air pressure 1080 hPa to 795 hPa Corresponds to an altitude of
-1000 m to 2000 m
Pollutant concentration
SO
2
: < 0.5 ppm;
Relative humidity < 60%,
no dewing
H
2
S: < 0.1 ppm;
Relative humidity < 60%,
no dewing
Test:
10 ppm; 4 days
1 ppm; 4 days
7.6 Specifications for Nominal Line Voltages, Isolation Tests, Protection
Class, and Degree of Protection
Rated operating voltages
The fail-safe signal modules operate at a rated voltage of 24 VDC; tolerance = 20.4 VDC to
28.8 VDC.
We recommend using power supplies of the Siemens "SITOP power" series.
Test voltages
The isolation test to IEC 61131-2 and the following:
Circuits with rated voltage V
in
to other circuits or
ground
Test voltage
0 V < V
in
≤ 50 V 500 VDC
Protection class
Protection class I to IEC 60536 (VDE 0106, Part 1), that is, the mounting rail must be bonded
to ground!