KROHNE ALTOFLUX IFM x080 K ATEX EN - Manual (Page 19)

ALTOFLUX IFM x080 K-EEx and ALTOFLUX IFM x080 K / i-EEx 19
For the connection diagrams of the intrinsically safe signal in-/outputs of the installed MODIS
modules in the IFC 090i-EEx electronics unit (see figure 6, 7 and 8 on the following pages). It has
to be noted that the intrinsically safe signal in-/outputs may only be connected to the following
listed apparatus' (registering devices like amp-meters, pulse counters, etc.):
EEx-approved intrinsically safe apparatus;
EEx-approved associated apparatus;
Passive apparatus as defined in your national standard for installation of electrical apparatus in
hazardous locations (e.g. EN 60079-14).
Other types of apparatus may only be connected to the intrinsically safe signal in-/outputs through
EEx-approved safety barriers, isolating interface units and the like. These barriers or units are not
depicted in the connection diagrams of figure 6, 7 and 8 for reasons of readability. It is assumed
that they are an integrated part of the registering devices or as separate devices connected in
series with them. The registering devices may only be installed in the hazardous location if they
also have a type of protection for explosion safety according to the European Standards of the EN
500xx series, or if they are constructed as prescribed in your standard national code of practice.
When the intrinsically safe signal in-/outputs are connected to other intrinsically safe or associated
apparatus, the maximum safety values (i.e. entity parameters) of all intrinsically safe circuits have
to be considered.
Important !
The 100…230 Vac power supply versions of the IFC 090i-EEx signal converter
electronics unit with MODIS modules can only be equipped with passive
outputs. Therefore the connection diagrams with the numbers 2, 4, 5, 7, 9, 11
and 12 are applicable for the 100…230 Vac power supply versions.