KROHNE ALTOFLUX IFM x080 K ATEX EN - Manual (Page 12)

ALTOFLUX IFM x080 K-EEx and ALTOFLUX IFM x080 K / i-EEx 12
2 Electrical connection
2.1 Equipotential bonding system
All EEx and EEx/i flowmeters must always be incorporated into the equipotential bonding system
of the hazardous area. This connection can be achieved through the PE/FE conductor connected
to the PE terminal in the terminal compartment (see figure of terminal arrangement below) or
through a separate PE conductor, cross s ectional area at least 4 mm
2
, connected to the external
PE clamp, placed below the converter housing.
2.2
Connecting cables
NOTE:
The below described cables are shown in the following connection diagram .
Cable A:
Signal cable for current output and binary outputs (pulse and status output): The cable parameters
must be in accordance with the regulations in the EN 60079-14 "Electrical installations in
hazardous locations" or an equivalent national standard. For the MODIS version with IFC 090i-
EEx electronics unit (right detail in connection diagram) the signal cable for the intrinsically safe
signal in-/outputs must also conform the requirements as specified in the relevant standard
national code of practice for the installation of electrical apparatus with type of protection Intrinsic
Safety "i".
Cable B:
Power supply cable: The cable parameters must be in accordance with the regulations of the EN
60079-14 "Electrical installations in hazardous locations" or an equivalent national standard.
Rated voltage
≥
500 V
Examples: H07...-., H05...-.
Equipotential bonding conductor
Cross-sectional area:
4 mm
2
(equivalent to AWG 10)