KROHNE VARIFLUX IFM 6080 K-EEx-i-EEx EN - Manual (Page 14)

ALTOFLUX IFM x080 K-EEx and ALTOFLUX IFM x080 K / i-EEx 14
2.5 MODIS version IFC 090i-EEx electronics unit
The field cables of the non-intrinsically safe power supply and the intrinsically safe, category "ia" signal
outputs enter the terminal compartment of the IFC 090i-EEx signal converter unit via two separate
entrances. To connect external devices to the intrinsically safe signal output terminals, the wiring
requirements for their type of protection as well as of the compartment (standard: increased safety "e",
optional: flameproof enclosure "d") must be conform to the international or national standard involved
(e.g. EN 60079-14).
Terminal arrangement in terminal compartment
Metal dividing
plate IS / non-IS
terminals
NC 1LŸ 0LŸ 24 Vac/dc
L N 100…240 Vac
PE Protective Earth terminal
Connecting terminals
for intrinsically safe
signal in-/outputs
Connecting
terminals for
non-intrinsically
safe power supply
Cable entrance for
non-intrinsically
safe power supply
cable
Cable entrance for
intrinsically safe
signal cable
NC = not connected
* * * *
The non-intrinsically safe terminals for connection of the power supply (1L
Ÿ and 0L Ÿ ) must be
connected according to the relevant standard code of practice for electrical apparatus intended for use
in potentially hazardous locations, type of protection Increased Safety "e" or type of protection
Flameproof Enclosure "d", depending on the type of protection of the terminal compartment of the signal
converter housing.
To gain access to the connection terminals of the power supply, the half-circular cover plate of
insulating material must be slightly lifted at one end and then rotated downwards, see the instruction on
the cover plate. After connection of the power supply cable, the half-circular cover plate must be
restored into its original position, so that the minimum clearances and creepage distances towards the
intrinsically safe signal in-/output terminals are maintained.
For details, see diagram on terminals compartment MODIS on next page.