ProfiHub B5+ / B5+RD User Manual
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Version 2.0 – July 2014 Page 7 / 56
ProfiHub-B5-Plus-Manual-EN.docx © PROCENTEC 2014 - Copyright - all rights reserved
1 Product Description
ProfiHub B5+ is an advanced, flexible and robust network component for PROFIBUS DP
installations, to create backbone structures and long multi-device star/tree segments.
PROFIBUS DP is a high speed communication bus that must comply with strict rules concerning spur
lines, because of possible reflections that could lead to communication disturbances. If spur lines or
star segments are required, costly investments in repeaters have to be done.
The innovative ProfiHub B5+ is the perfect component for such applications. It is an economic solution
to realise reliable spur lines in high speed DP networks. They have the functionality of 5 galvanic
isolated transparent repeaters. This allows network structures with extended spur lines that
individually can handle a maximum of 31 devices and a length equal to the main bus. The ProfiHub
B5+ refreshes a received message on one Channel and transfers it to all the other Channels
(chicken foot topology).
Because the ProfiHub B5+ creates isolated segments, the devices can now be removed and added
during operation. Also most electrical bus problems and EMC disturbances in a spur do not spread to
the other segments. The intelligent logic and isolation circuits of the ProfiHubs do not change the bit
width. This means the ProfiHubs do not have limitations in serial placement. The logic also detects the
transmission speed automatically.
To assist the installation work, termination is integrated and
can be switched on/off. The grounding concept is also
selectable: direct or capacitive grounding. The ProfiHubs are
powered by a 10 to 24 DC Voltage. For troubleshooting,
maintenance and commissioning the ProfiHubs are equipped
with LEDs on the outside, which indicate the status of each
Channel (Data and Error).
If bus redundancy is enabled, 2 segments will form a
redundant pair which is completely compatible with the ABB
RLM01. An alarm contact is linked to events based on the
status of the power supply and the bus redundancy status.
Fig. 1 - ProfiHub B5+
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