WAGO 750 Series Manual page 226

222 • Use in Hazardous Environments
Installation regulations
Danger
When using the WAGO-I/O SYSTEM 750 (electrical operation) with Ex
approval, the following points are mandatory:
A. The fieldbus independent I/O System Modules Type 750-xxx are to be
B. The fieldbus independent I/O system may only be installed in hazardous
C. Installation, connection, addition, removal or replacement of modules,
D. Ensure that only approved modules of the electrical operating type will be
E. Operation of intrinsically safe EEx i modules with direct connection to
F. DIP switches and potentiometers are only to be adjusted when the area is
Further Information
Proof of certification is available on request. Also take note of the
information given on the module technical information sheet.
installed in enclosures that provide for the degree of ingress protection of
at least IP54.
For use in the presence of combustible dust, the above mentioned modules
are to be installed in enclosures that provide for the degree of ingress
protection of at least IP64.
areas (Europe: Group II, Zone 2 or America: Class I, Division 2, Group A,
B, C, D) or in non-hazardous areas!
fieldbus connectors or fuses may only take place when the system supply
and the field supply are switched off, or when the area is known to be
non-hazardous.
used. The Substitution or Replacement of modules can jeopardize the
suitability of the system in hazardous environments!
sensors/actuators in hazardous areas of Zone 0 + 1 and Division 1 type
requires the use of a 24 V DC Power Supply EEx i module!
know to be non-hazardous.
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