3 ELECTRICAL CONNECTIONS
36
OPTIMASS / 400
www.krohne.com 10/2022 - 4003491806- AD OPTIMASS 400 Atex R06 en
Intrinsically safe I/O connections
Ex I/O I/O functions
Ex i I/O Passive current output plus HART
Pulse/ status output
Ex ia IIC
U
i
= 30 V, Ii = 100 mA (130 mA for
VE54),P
i
= 1.0 W, C
i
= 10nF, Li = not
significant
Active current output plus HART Ex ia IIC
linear characteristics: Uo = 21 V, I
o
=
90 mA, P
o
= 0.5 W
C
o
= 90 nF, L
o
= 2.0 mH
C
o
= 110 nF, L
o
= 0.5 mH
Ex i option or Ex i option 2 Passive current input
Current output
Pulse / status output / control input
Ex ia IIC
Ui = 30 V, Ii = 100 mA (130 mA for
VE54), P
i
= 1.0 W
Ci = 10 nF, L
i
= not significant
Active current output Ex ia IIC
linear characteristics: U
o
= 21 V, I
o
=
90 mA, P
o
= 0.5 W
C
o
= 90 nF, L
o
= 2.0 mH
C
o
= 110 nF, L
o
= 0.5 mH
Active current input Ex ia IIC
linear characteristics: U
o
= 24.1 V, L
o
=
99 mA, P
o
= 0.6 W
C
o
= 75 nF, L
o
= 0.5mH
Fieldbus I/O Profibus PA
Foundation Fieldbus
Ex ia IIC
U
i
= 24 V, Ii = 380 mA, P
i
= 5.32 W, C
i
=
5 nF, L
i
= 10 µH
Intrinsically safe Fieldbus complies
with the FISCO model.
Overview of possible combinations
Character "n", "p"
and "q"
Name I/O circuits Terminals A, A- Terminals B, B- Terminals C, C- Terminals D, D-
200 Ex i I/O Not connected Not connected CO (a) PO /SO
300 Not connected Not connected CO PO /SO
210 Ex i I/O with Ex i
options
CO (a) PO / SO / CI CO (a) PO /SO
220 CO PO / SO / CI CO PO /SO
310 CO (a) PO / SO / CI CO PO /SO
320 CO PO / SO / CI CO PO /SO
D00 Profibus PA Not connected Not connected PA PA
D10 Profibus PA (with
Ex i options)
CO (a) PO / SO / CI PA PA
D20 CO PO / SO / CI PA PA
E00 Foundation
Fieldbus
Not connected Not connected FF FF
E10 Foundation
Fieldbus (with Ex
i options)
CO (a) PO / SO / CI FF FF
E20 CO PO / SO / CI FF FF