KROHNE IFC 090F Converter EEx-ATEX EN - Manual (Page 14)

ALTOFLUX IFC 090 F-EEx and ALTOFLUX IFC 090 F / i-EEx 14
Overview of MODIS modules
Module Terminal designation Function / Intrinsically safe maximum data
P-SA I ⊥, I Current output (0/4-20 mA), passive
U
i
= 30 V, I
i
= 250 mA, P
i
= 1.0 W
C
i
= 5 nF, L
i
≈ 0
FA-ST B1, B1 ⊥ or B2, B2 ⊥ Pulse (frequency) output or status in-/output, all passive
The function can be set by software
U
i
= 30 V, I
i
= 250 mA, P
i
= 1.0 W
C
i
= 5 nF, L
i
≈ 0
F-PA D, D ⊥ Fieldbus module, type Profibus system, passive
U
i
= 30 V, I
i
= 300 mA, P
i
= 4.2 W
C
i
= 5 nF, L
i
≈ 0
F-FF D, D ⊥ Fieldbus module, type Fieldbus Foundation, passive
U
i
= 30 V, I
i
= 300 mA, P
i
= 4.2 W
C
i
= 5 nF, L
i
≈ 0
DC-I I+, B1+ Intrinsically safe voltage source for the passive module
P-SA or FA-ST, so that active operation is possible.
U
o
= 23.5 V, I
o
= 98 mA, P
o
= 0.6 W
C
o
= 132 nF, L
o
= 4 mH
Note!
When modules P-SA (or FA-ST) and DC-I are connected
in series, the internal capacitance C
i
of 5 nF must be
subtracted from the C
o
of 132 nF. So the data plate will
list a C
o
of 127 nF.
Besides the shown intrinsically safe maximum values for voltages and current -which are based
on certain fault conditions as prescribed by the standard EN 50 020 - the nominal values for
current and voltage must also be respected otherwise a proper functioning of the modules is not
guaranteed!
Nominal voltage and current values for the MODIS modules
MODIS module
Nominal values for voltage and current
P-SA
(passive current output ) Current: 4 ... 20 mA
Working voltage: 8 ... 30V
Voltage drop : 8V at 4mA
FA-ST
(frequency / pulse / status output
or control input) Working voltage: 6 ... 30V
Working current: 110 mA
Voltage drop: in ON-state: < 2V at 110 mA
Leakage current in OFF-state: < 900 µA at 30V
Control input:
Input voltage LOW level:
< 3V
Input voltage HIGH level: > 7V
Frequency range : 0 .. 12 KHz
DC-I
(active voltage source) Voltage: 20V
Current: 30
mA
Internal resistance: 260 Ω