Use in Hazardous Environments
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WAGO-I/O-SYSTEM 750
I/O Modules
3.2.4 Special conditions for safe use (ATEX Certificate DEKRA
11ATEX0203 X)
1.
The components shall be installed in a suitable enclosure providing a degree of
protection of at least IP54 according to EN 60529, taking into account the
environmental conditions under which the equipment will be used.
2.
When the temperature under rated conditions exceeds 70 °C at the cable or
conduit entry point, or 80 °C at the branching point of the conductors, the
temperature specification of the selected cable shall be in compliance with the
actual measured temperature values.
3.
Provisions shall be made to prevent the rated voltages from being exceeded by
transient disturbances of more than 40 %.
4.
Components may only be removed or inserted when the system supply and the
field supply are switched off, or when the location is known to be non-
hazardous.
5.
Fieldbus connectors may only be disconnected or connected when the system
supply is switched oft, or when the location is known to be non-hazardous.
6.
The fuses, present in de the system modules 750-6xx may only be replaced
when the supply is switched off, or when the location is known to be non-
hazardous.
7.
Address selectors and ID switches may only be adjusted when the system
supply is switched off, or when the location is known to be non-hazardous.
8.
The ambient temperature range is: 0°C
≤
T
a
≤
+55°C.
