VEGA KFD2-BR-Ex1.3PA.93 Segment coupler for PROFIBUS PA User Manual
Composition
1
098
31
4_
EN
G.xm
l
2
003
-03-
1
3
Subject to reasonable modifications due to technical advances.
Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
KFD2-BR-Ex1.3PA.93
Segment coupler
Power supply
Power rail
green
red
yellow
PROFIBUS PA
[EEx ia] IIC
Protocol conversion
PROFIBUS DP
Saf
e area
Hazar
dous area
Bus termination
Screen/P
A
Bus termination
Screen/FE
FE
+
-
+
-
1
16
2
17
3
18
40
42
57
56
55
58 59 60
41
VP
CNTR-P
DGND
IEC 61158-2
RS 485
S1
RxD/TxD-P
RxD/TxD-N
Composition
Segment coupler for intrinsically safe
PROFIBUS PA segment
• PROFIBUS DP, EN 50170/2, RS
485: 93.75 kbit/s
• PROFIBUS PA [EEx ia] IIC;
PROFIBUS EN 50170/2; IEC 61158-
2: 31.25 kbit/s
• Master independent
• Up to 10 Ex devices can be
connected to the PA segment
• Supply via PA bus
• 24 V DC rated operational voltage
• Removable terminals and Power
Rail
• EMC acc. to NAMUR NE 21
The segment coupler couples an intrin-
sically safe PROFIBUS PA segment to
a PROFIBUS segment using RS 485
transfer technology in accordance with
EN 50170. The Profibus is standard-
ised in EN 50170/2.
The communication behaves transpar-
ently. The protocol is transferred un-
changed, therefore the segment cou-
pler can operate with each PROFIBUS
protocol and is not parameterised.
The baudrate of the intrinsically safe
PROFIBUS PA segment is 31.25
kbits/s in accordance with IEC 61158-2
The PROFIBUS segment with RS 485
transfer technology has a baudrate of
93.75 kbit/s. This baudrate is particular-
ly suitable for mixed operation with DP
and PROFIBUS PA stations.
Devices on the PROFIBUS PA are sup-
plied from the segment coupler via the
bus.
Please note!
On the segment coupler no supply volt-
age or other external voltage must be
applied to the PROFIBUS terminals.
For additional information see the PNO
Manual for PROFIBUS PA
*) FISCO:
Function
Output characteristic
Uo
Po
Io
I
I =
Uo
Segment coupler for PROFIBUS PA