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5.2.4
Exhaust port
Î Install a filter (4) into the exhaust port 5
of the pneumatic connection module to
prevent water or dirt from entering when
the exhaust air is not discharged over a
common pipe or when the devices are
not mounted in an enclosure (see Fig. 8).
Î When the devices are mounted in an en-
closure, fit the enclosure with a filter with
the specified degree of protection.
Î Select the filter's thread size suitable for
the number of switching functions (e.g. at
least ½" for 16 switching functions).
Legend
1 G ¼ male connector for 9x3 mm hose
2 Seal 13.5x17x1.5
3 Strainer G ¼
4 Filter G ¼
Fig. 8: Supply air and exhaust air connections
EB 3965 EN
5.3 Electrical connection
DANGER
!
Risk of electric shock.
For electrical installation, observe the rele-
vant electrotechnical regulations and the ac-
cident prevention regulations that apply in
the country of use.
Valid regulations in Germany:
− VDE regulations
− Accident prevention regulations of the em-
ployers' liability insurance.
DANGER
!
Risk of fatal injury due to the formation of an
explosive atmosphere.
For installation in hazardous areas, observe
the relevant standards that apply in the coun-
try of use.
Valid standards in Germany:
− EN 60079-14: 2008 (VDE 0165, Part 1)
Explosive Atmospheres – Electrical Installa-
tions Design, Selection and Erection.
WARNING
!
Incorrect electrical connection will render the
explosion protection unsafe.
− Adhere to the terminal assignment.
− Do not undo the enameled screws in or on
the housing.
− Do not exceed the maximum permissible
values specified in the EC type examina-
tion certificates when interconnecting in-
trinsically safe electrical equipment (U
U
, l
or I
, P
or P
0
i
0
i
Mounting and start-up
, C
or C
and L
or L
0
i
0
i
or
i
).
0
33
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