Foundation Fieldbusgeneral; Ranges Of Application Of Power Repeaters - Pepperl+Fuchs KLD2-PR-Ex1.IEC. Manual

Power repeater / power supply according to IEC 61158-2
5

FOUNDATION FieldbusGeneral

5.1

Ranges of application of power repeaters

Power repeaters combine two identical H1 bus segments with each other on the phys-
ical level. Since the PROFIBUS PA and the H1 bus of the FOUNDATION Fieldbus
use the same physical transmission configuration, the power repeaters can also be
used for both systems. They are used to
• be able to increase the line length of the bus segment
• to be able to connect more instruments on a bus segment that a segment coupler/
a bridge can supply power to.
• to implement from a non-intrinsically safe bus segment to an intrinsically safe bus
segment.
The following illustration shows the possibilities for usage of power repeaters for both
the PROFIBUS PA and the FOUNDATION Fieldbus:
Segment Coupler
PROFIBUS DP
PROFIBUS PA non-intrinsically safe
Figure 5.1: Power repeater on a PROFIBUS PA segment
Bridge
H2 bus
FOUNDATION Fieldbus H1 bus
Figure 5.2: Power repeater on a FOUNDATION Fieldbus H1 segment
Note the definition of stub line length on
Subject to reasonable modifications due to technical advances.
Pepperl+Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 7 79 90 91 • Internet http://www.pepperl-fuchs.com
non-intrinsically safe
FOUNDATION FieldbusGeneral
PROFIBUS
PA in some
cases EEx ia IIC
P o w er
repeater
Fieldbus
terminator
FF H1 bus in some
cases EEx ia IIC
Power
repeater
page 8
Copyright Pepperl+Fuchs, Printed in Germany
Fieldbus
terminator
11