ProfiHub B5+R

The ProfiHub B5+ enables wide-ranging RS 485 star/tree segments and long spur lines for PROFIBUS DP installations in IP 20 environments. It's an easy and robust network component to design reliable, flexible and object oriented networks.

PROFIBUS DP is a high-speed industrial bus that has to comply with strict rules concerning spur lines. The ProfiHub B5+ is a perfect economic solution to bridge user’s requirements and create reliable star networks. It’s an essential component to obtain better control during maintenance and upgrading of the network.

The ProfiHub B5+ is equipped with 5 galvanic isolated transparent repeaters (offering 6 segments). Each segment can handle 31 devices and a cable length equal to the main bus. To save costs on plugs and offer flexibility, it contains screw terminals as well as DB9 connectors. The DB9 connectors are also perfect measurement points for ProfiTrace to quickly measure all segments. Termination for each segment is on-board and switchable.

If bus redundancy is enabled, 2 segments will form a redundant pair. This creates an even more reliable network. An alarm contact is linked to events based on the status of the power supply and the bus redundancy if this is enabled.

Application areas

Dynamic spur lines to devices
Star, tree and bus structured networks
Removable drives and motors
Pull/Plug motor control centers
EMC sensitive applications
Barrier for non galvanic isolated equipment


ProfiHub comparison
5 5 2 5 Isolated repeater channels
(5 channels = 6 segments)
Transparent for all PROFIBUS DP protocols
Suitable for PROFIsafe and MPI
31 devices per channel
1200 m segment length
(depends on baudrate)
9.6 Kbps .. 12 Mbps
Screw terminals and DB9 connectors
Configurable grounding system
Integrated termination facilities
IP 20 classification
-25..70 -25..70 -25..70 -20..60 Temperature (˚ C)
9..31 9..31 9..31 10..32 Power supply (VDC)
Redundant power supply
Bus redundancy option
Alarm contact
High integrity telegram checking
Marine/DNV and UL certified
Internal high feature DP slave device for PROFIBUS diagnostic data


Your benefits
Hot slave insertion/removal during operation
Short circuit protection on each channel
Compact and robust construction
Screw terminals and DB9 connectors can be mixed
Conveniently arranged networks
Extendable installations
Cost saving


The MTBF for the ProfiHub B5 is approximately 45 years (398723 Hours). The MTBF was conducted using IEC-62380 (RDF2000/UTE C 80-180).
ProductsPriceOrder codeDescription


ProfiHub B5+RD

Contact us 17020RD - Identical as the ProfiHub B5+R
- Integrated diagnostic device
- GSD file for host system
- Marine and UL certified


ProfiHub B5+R

Contact us 17020R - 5 Channels (6 segments)
- Redundant power supply
- Alarm relay
- Bus redundancy option
- Marine and UL certified


ProfiHub B5

Contact us 17010 - Previous issue