KROHNE IFC 090F Converter EEx-ATEX EN - Manual (Page 6)

ALTOFLUX IFC 090 F-EEx and ALTOFLUX IFC 090 F / i-EEx 6
Mains fuses
Power supply
Mains fuse
Type Nominal voltage Rating Specifications
100/115 Vac 200 mA Switching char.: fast (F) to time-lag (T)
200/230 Vac 125 mA Breaking capacity: ≥ 1500 A @ 250 V
AC-versions
24 Vac Switching char.: fast (F) to time-lag (T)
DC-version 24 Vdc
1.25 A
Breaking capacity: ≥ 300 A @ 65 V
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.
Electrical data of in-/output circuits
Terminals Description
Nominal voltage Maximum current
B1, B ⊥, B2 Pulse, status, control in-/outputs 32 V 150 mA
I+, I Current output 15 V 22 mA
The difference between 115/230 Vac version and the 100/200 Vac version is the number of the
primary windings of the mains transformer.
The terminals indicated as B1, B
⊥ and B2 can be configured as pulse in-/outputs by jumpers.
The IFC 090-EEx electronics unit is provided with an extension module that is used for data
communication (e.g. SMART, HART or RS485). In that case, the current output signal (I+, I) is
superposed with a sinusoidal voltage signal of 0.5 V. The extension module does not significantly
influence the nominal voltage U
n
, the nominal current I
n
or the power dissipation.
Overheating protection
The mains transformer is protected against overheating by a temperature breaker in series with
the primary winding. The temperature breaker is casted within the compound of the transformer
and has an opening temperature of 125 °C (± 5 K).
IFC 090i-EEx unit with MODIS modules
The IFC 090i-EEx electronics unit is equipped with two MODIS-modules. It is equipped with one of
the following power supplies.
Electrical data of IFC 090i-EEx electronics unit
Power supply
Terminal Function Electrical data
AC-version L
N
PE Live
Neutral
Protective ground U
n
= 100…230 Vac –15%/+10%
P
n
= approx. 15 VA
Primary fuse: Rated current: 1.6 A
Design conform IEC 127-2
Breaking capacity: 1500 A
AC/DC-version 1L
0L
FE
Live
Neutral
Functional ground U
n
= 24 V ac / dc
AC: -15%/+10% or 20.4…26.4 V ac
DC: -25% / +30% or 18…32 V dc
I
n
= approx. 490…630 mA for AC
approx. 310…550 mA for DC
P
n
= approx. 10 W
Primary fuse: Rated current: 1.25 A
Design conform IEC 127-2
Breaking capacity: 1500 A
NOTE:
The mains fuses for both electronics units are listed in Sect. 6 of this manual.