40
Use in Hazardous Environments
WAGO-I/O-SYSTEM 750
750-1423 4DI 24V DC 2.0ms, low-side switching, 3-conductor
Manual
Version 1.2.0
7.2.2
Special Conditions for Safe Use (ATEX Certificate TÜV 12
ATEX 106032 X)
1.
For use as Gc- or Dc-apparatus (in zone 2 or 22) the Field bus Independent
I/O Modules WAGO-I/O-SYSTEM 750-*** Ex i shall be erected in an
enclosure that fulfils the requirements of the applicable standards (see the
marking) EN 60079-0, EN 60079-11, EN 60079-15 and EN 60079-31.
For use as group I electrical apparatus M2 the apparatus shall be erected in
an enclosure that ensures a sufficient protection according to EN 60079-0
and EN 60079-1 and the degree of protection IP64.
The compliance of these requirements and the correct installation into an
enclosure or a control cabinet of the devices shall be certified by an ExNB.
2.
Measures have to be taken outside of the device that the rating voltage is not
being exceeded of more than 40 % because of transient disturbances.
3.
The connecting and disconnecting of the non-intrinsically safe circuits is
only permitted during installation, for maintenance or for repair purposes.
The temporal coincidence of explosion hazardous atmosphere and
installation, maintenance resp. repair purposes shall be excluded.
4.
For the type the following shall be considered: The Interface circuits shall
be limited to overvoltage category I/II (non mains/mains circuits) as defined
in EN 60664-1.
