Coupling - Pepperl+Fuchs FieldConnex Segment Coupler 3 Manual

PROFIBUS Power Hub Segment Coupler 3 (SK3)
Product Specifications
Various Power Hub power supply solutions offer simplex or redundant power to PROFIBUS PA
segments. The Power Hub consists of a motherboard with sockets for plug-in modules.
1 power supply module per segment in simplex mode or 2 power supply modules per
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segment in redundant mode
1 physical layer diagnostic module HD2-DM*
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The Power Hub feeds segments following the high–power trunk concept for explosion
protection. High energy on the trunk line is fed to the field devices via couplers such as
FieldBarriers or Segment Protectors. A dedicated version of the DART Power Hub supports the
intrinsically safe concept for fieldbus.
Also, a plug-in advanced diagnostic module for fieldbus is available. This module monitors the
physical layer online and in real time, enabling detection of degradation and faults during
operation. Measurement data and alarms are transmitted to the control room. This way, they
make the fieldbus physical layer visible which can now be treated as an active component in
plant asset management systems. Operating personnel are enabled to decide on proactive
measures to avoid unwanted situations while the plant is running smoothly.
Note!
The segment supply is part of the PROFIBUS Power Hub system. For detailed information go
to www.pepperl-fuchs.com and look up to the corresponding documentation of the fieldbus
power supply you installed.
2.2

Coupling

Coupling involves a gateway motherboard and 1 or, in the case of redundant coupling,
2 gateway modules. The purpose of coupling is to adjust the physical data transfer properties
on the PROFIBUS DP side (RS–485) to those of PROFIBUS PA (in conformity with
IEC 61158–2). The coupling provides a baud rate of 31.25 kbit/s on the PROFIBUS PA side. In
addition, the coupling generates galvanic isolation between PROFIBUS DP and
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PROFIBUS Power Hub
Coupling Segment Supply
PROFIBUS PA
4 x PA Fieldbus Trunk