F 3224A (0622)
187
1 Operating Instructions
1.1 Application
The module is used to evaluate proximity switches (according to NAMUR) or contacts in intrin-
sically safe circuits (Ex)i.
The proximity switches or contacts can be installed in hazardous areas from zone 0 on.
1.2 Electrical specifications concerning intrinsic safety
For these specifications please refer to the EC-Type-Examination certificate (PTB 02 ATEX
2178) enclosed.
In case of the parallel connection of two outputs:
1.3 Assembly
The module is mounted in a 19” subrack. The mounting position must be vertically. The design
of the subrack must allow heat dissipation.
The module is connected to the intrinsically safe field circuits via the cable plug Z 7114.
Further information for assembly and installation:
see HIMA Manual (catalog) "The H41q and H51q System Families".
Note
The connection of a mechanical sensor requires a resistor (8,2 k
Ω to
15 k
Ω), connected in parallel directly at the sensor to avoid an input
line break signal.
The module may not be mounted in hazardous areas.
The input channels may not be exposed to external voltage.
Modules, which were operated in general electrical systems, may not
be used in Ex-plants thereafter.
I
o
= 2 x 10 mA = 20 mA
P
o
= 2 x 23 mW = 46 mW
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