KROHNE IFC 300 Converter FOUNDATION FIELDBUS EN - Manual (Page 8)

3
ELECTRICAL CONNECTIONS
8
IFC 300
www.krohne.com 02/2011 - 4001086501 - AD IFC 300 FF R02 en
Description of abbreviations and CG identifier for possible optional modules
on terminals A and B
3.7 Topology of FF networks
An example of mixed topology of FF networks is shown in the following example.
Connection is best made via short branch cables and T connectors. This connection type makes it
possible to connect and disconnect the devices without interrupting the bus or the
communication.
Abbreviation Identifier for CG No. Description
I
a
A Active current output
I
p
B Passive current output
P
a
/ S
a
C Active pulse, frequency, status output or limit switch (changeable)
P
p
/ S
p
E Passive pulse, frequency, status output or limit switch (changeable)
P
N
/ S
N
F Passive pulse, frequency, status output or limit switch according to
NAMUR (changeable)
C
a
G Active control input
C
p
K Passive control input
C
N
H Active control input to NAMUR
Signal converter monitors cable breaks and short circuits acc. to
EN 60947-5-6. Errors indicated on LC display. Error messages possible
via status output.
IIn
a
P Active current input
IIn
p
R Passive current input
- 8 No additional module installed
- 0 No further module possible
1 HSE network
2 H1 bus
3 Intrisically safe, explosive area
B1+B2 Bridge = coupling element for H1 bus
and HSE network
D1-D3 Device = field devices, own power
supply, for non potentially explosive
areas
D4-D6 Intrinsically safe devices, external
power supply, for potentially explosive
areas
I.S. Intrinsically safe barrier
JB Junction box for field devices
PS Power supply
Switch = connection of multiple HSE
sub networks
T Terminator
.book Page 8 Tuesday, January 18, 2011 3:40 PM