F 3238 (0622)
201
1 Operating Instructions
1.1 Application
The module is used to evaluate proximity switches (according to NAMUR) or contacts with re-
sistor network, in intrinsically safe circuits (Ex)i.
The proximity switches or contacts can be installed in hazardous areas from Zone 0 on, if cer-
tified.
1.2 Electrical specifications concerning intrinsic safety
For these specifications please refer to the EC-Type-Examination certificate enclosed.
1.3 Assembly
The module must not be mounted in hazardous areas.
The module is mounted in a 19” subrack. It must be plugged in 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 7008.
1.4 System start-up
Prior to the first system start-up, an Ex-expert has to check the correct installation of the sys-
tem, especially the supply voltage connections and the connections for the intrinsically safe cir-
cuits.
1.5 Notes on project engineering
Appertaining software function block: HB-RTE-3 (for latest version refer to the description of
the operating system).
Module in Surface Mounted Device (SMD) technology (AS03) usable with BS41q/51q V7.0-7
or newer.
Note for use in (Ex)i circuits: No restrictions about type of module adjacent to F 3238.
The input channels must
not be exposed to external voltage.
Modules, which were operated in general electrical systems, must not
be used in (Ex)i-applications thereafter.
In addition, only the applications described in this data sheet are
admissible.
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