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Segment coupler
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 611582: 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
red yellow
PROFIBUS PA
[EEx ia] IIC
1 16 2 17 3 18
+
-
Screen/PA
Bus termination
IEC 61158-2
Protocol conversion
RS 485
Bus termination
S1
KFD2-BR-Ex1.3PA.93
Segment coupler for PROFIBUS PA
Safe area Hazardous area
green
Function
The segment coupler couples an intrinsically safe PROFIBUS PA segment to
a PROFIBUS segment using RS 485
transfer technology in accordance with
EN 50170. The Profibus is standardised in EN 50170/2.
The communication behaves transparently. The protocol is transferred unchanged, therefore the segment coupler 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 supplied from the segment coupler via the
bus.
Please note!
On the segment coupler no supply voltage or other external voltage must be
applied to the PROFIBUS terminals.
For additional information see the PNO
Manual for PROFIBUS PA
Output characteristic
VP
CNTR-P
DGND
PROFIBUS DP
Composition
Screen/FE
RxD/TxD-P
404257 56 55 58 59 6041
RxD/TxD-N
+
FE
-
Power supply
Power rail
U
o
*) FISCO:
1
P
o
I =
U
o
I
I
o
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
098314_ENG.xml 2003-03-13
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Technical Data
Supply
Connection Power Rail or terminals 59+, 60-, 58 FE
Rated voltage 20 ... 35 V DC
Ripple ≤ 10 %
Rated current 190 mA ... 430 mA
Fieldbus connection
Profibus PA
Connection terminals 3, 18+; 2, 17Rated voltage 12,6 ... 13,4 V
Rated current ≤ 100 mA
Terminating impedance 100 Ω , integrated
Profibus DP PROFIBUS with RS 485 transmission technique
Connection terminals 40 RxD/TxD-P, 41 RxD/TxD-N, 42 screen/FE, 55 DGND, 56 CNTR-P, 57 VP
Baudrate 93,75 kBit/s
Terminating impedance with rotary switch (S1) switchable: 1 = on; 0 = off
Electrical isolation
Profibus PA/Profibus RS 485-Segment safe electrical isolation acc. to EN 50020, voltage peak value 375 V
PROFIBUS DP/Supply function insulation acc. to DIN EN 50178, rated insulation voltage 50 V
PROFIBUS PA/Supply safe electrical isolation acc. to EN 50020, voltage peak value 375 V
Standard conformity
Electrical isolation EN 50178
Electromagnetic compatibility NAMUR NE 21
Protection degree IEC/EN 60529
Fieldbus standard EN 50170/2
Climatic conditions DIN IEC 721
Directive conformity
Electromagnetic compatibility
Directive 89/336/EG EN 61326, EN 50081-2
Ambient conditions
Classification 3K3
Ambient temperature -20 ... 60 °C (253 ... 333 K)
Storage temperature -40 ... 85 °C (233 ... 358 K)
Relative humidity < 75 %
Degree of soiling max. 2, according to IEC 664
Mechanical specifications
Connection type terminals
Core cross-section
Housing 100 mm x 115 mm x 107 mm
Protection degree IP20
Mass 650 g
Mounting DIN rail mounting
Data for application in conjunction with
hazardous areas
EC-Type Examination Certificate PTB 99 ATEX 2142
Group, category, type of protection,
Temperature classification
Statement of conformity TÜV 00 ATEX 1531X
Group, category, type of protection,
Temperature classification
Supply
Safety maximum voltage U
Profibus PA
Voltage U
Current Io 207,2 mA
Power P
Safety maximum voltageUm 60 V
Directive conformity standards
Directive 94/9 EU EN 50014, EN 50020, EN 50021
15 V
o
1,93 W
o
m
up to 2.5 mm
¬ II (1) G D [EEx ia] IIC
¬ II 3 G EEx nA IIC T4
40 V DC
2
KFD2-BR-Ex1.3PA.93
eff
098314_ENG.xml 2003-03-13
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
2
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Accessories
Power Rail UPR02
Power feed module KFD2-EB2
Terminal resistor KMD0-FT-Ex
Fx-FT-Ex1.I.IEC
Fx-FT-Ex1.D.IEC
Dimensions
100
KFD2-BR-Ex1.3PA.93
115
Protective cap, remove for
power suppply via power rail
Power rail
Extendable lugs
93
107
098314_ENG.xml 2003-03-13
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
3
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
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