KROHNE ALTOFLUX IFM 4080 K EEx EN - Manual (Page 5)

4
The terminal compartment (with standard type of protection increased safety "e") is standard
equipped with two ATEX approved "EEx e" cable glands. The terminal compartment can also
be provided as a flameproof enclosure "d", in which case ATEX approved "EEx d" cable
glands of size Pg13.5, Pg16 or M20x1.5 are either factory installed or must be installed by
the customer. For flameproof conduit systems, the terminal compartment must have type of
protection flameproof enclosure "d" according to EN 50018. The conduits must be sealed by
"EEx d" approved (within the ATEX 100a directive) sealing devices (i.e. stopping box) directly
at the conduit entrances of the as flameproof enclosure performed terminal compartment.
1.4 Electronics unit
The IFM 4080 K/…-EEx magnetic-inductive compact flowmeter can be equipped with the
regular IFC 090-EEx or with the IFC 090i-EEx electronics unit with intrinsically safe signal
outputs (i.e. MODIS version). The next subsections give a detailed description of these units.
1.4.1 Regular IFC090-EEx electronics unit
The IFC 090-EEx is used in the regular IFM 4080 K-EEx and can be equipped with one of
the following power supplies (depends on the area of application).
Power
supply Terminal Function Electrical data
AC-versions
L
N
PE
Live
Neutral
Protective Earth
U
n
= 100/115/200/230 V
ac
-15/+10%
P
n
= approx. 10 VA, U
m
= 253 V
AC/DC-version
1L½
0L½
FE
Live
Neutral
Functional Earth
U
n
= 24 V ac/dc
AC: -15/+10%, P
n
=10 VA
DC: -25/+30%, P
n
=8 W
U
m
= 253 V
Table 4: Electrical data of power supply.
The IFC 090-EEx electronics unit is equipped with the following in-/output circuits. Terminals
B1, B
⊥
and B2 can be configured as status or pulse outputs or as control inputs via the
software. See the table below for the electrical data of these in-/output circuits.
Terminals Description Nominal voltage Maximum current
I+, I Current output 15 V 22 mA
B1, B
⊥
, B2 Pulse, status, control in-/outputs 32 V 150 mA
Table 5: Electrical data of in-/output circuits.
1.4.2 IFC 090i-EEx unit with MODIS modules
The IFC 090i-EEx electronics unit is equipped with a pair of MODIS-modules (see page 8). It
is equipped with one of the following power supplies.
Power supply Terminals Function Electrical data
AC-version
L
N
PE
Live
Neutral
Protective Earth
U
n
= 100…230 Vac –15%/+10%
P
n
= 15 VA, U
m
= 253 V
AC/DC-version
1L½
0L½
FE
Live
Neutral
Functional Earth
U
n
= 24 Vac/dc
AC: -15%/+10% or 20.4…26.4 Vac
DC: -25%/+30% or 18…32 Vdc
P
n
= 10 W, U
m
= 253 V
Table 6: Electrical data of IFC 090i-EEx electronics unit.
NOTE: The mains fuses for both electronics units are listed in Section 8 of this manual.