Procentec Profihub B2FO2+ User Manual

ProfiHub B2FO2+

User Manual

Draws your attention to important information on handling the product, a particular part of
the documentation or the correct functioning of the product.

Copyright © 2016 PROCENTEC

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted,
in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior
written permission of the publisher.

Safety Guidelines

This manual contains notices which you should observe to ensure your own personal safety, as well as to
protect the product and connected equipment. These notices are highlighted in the manual by a warning sign
and are marked as follows according to the level of danger:



Warning

This device and its components may only be used for the applications described in this manual and only in
connection with devices or components that comply with PROFIBUS and an RS 485 interface. This product can
only function correctly and safely if it is transported, stored, set up, installed, operated and maintained as
recommended.

Qualified Technicians

Only qualified technicians should be allowed to install and work with this equipment. Qualified technicians are
defined as persons who are authorized to commission, to ground, to tag circuits and systems in accordance
with established safety practices and standards. It is recommended that the technicians carry a Certified
PROFIBUS Installer or Certified PROFIBUS Engineer certificate.

Disclaimer of Liability

We have checked the contents of this manual as much as possible. Since deviations cannot be precluded
entirely, we cannot guarantee full agreement. However, the content in this manual is reviewed regularly and
any necessary corrections included in subsequent editions. Suggestions for improvement are welcomed.

ProfiHub B2FO2+ User Manual – v2.1.0 | 29 December 2016 | © PROCENTEC 1/38

PROCENTEC
Klopperman 16
2292 JD WATERINGEN
The Netherlands

Tel.: [phone]
Fax: [phone]
Email: [e-mail]

Important information

Purpose of the Manual

This manual explains how to put the ProfiHub B2FO2+ into operation.

Recycling and Disposal

The parts of the ProfiHub can be recycled. For further information about environment-friendly recycling and
the procedure for disposing of your old equipment, please contact:

Document Updates

You can obtain constantly updated information on PROCENTEC products on the Internet at
www.procentec.com. You can also contact PROCENTEC Customer Support:

• By phone at [phone]

• By fax at [phone]

• By email at [e-mail]

ProfiHub B2FO2+ User Manual – v2.1.0 | 29 December 2016 | © PROCENTEC 2/38

Contents

Important information ........................................................ 2

1. Product description ....................................................... 5

1.1 Introduction ........................................................................................................................ 5

1.2 Product features.................................................................................................................. 6

1.3 Application areas ................................................................................................................. 7

1.4 Additional benefits .............................................................................................................. 7

1.5 Channel Structure ............................................................................................................... 8

1.6 Grounding System ............................................................................................................... 8

1.7 Cable lengths for PROFIBUS DP ........................................................................................... 9

1.8 Cable types for PROFIBUS DP .............................................................................................. 9

1.9 Cable lengths for fiber optic ............................................................................................... 10

1.10 Cable types for fiber optic .................................................................................................. 10

1.11 Status LEDs ......................................................................................................................... 10

1.12 The red Error LED ............................................................................................................... 11

1.13 Comparison table ............................................................................................................... 12

2. Installation Instructions ProfiHub B2FO2+ .................. 13

2.1 Location .............................................................................................................................. 13

2.2 Position............................................................................................................................... 13

2.3 Mounting ............................................................................................................................ 13

2.4 Power Supply...................................................................................................................... 14

2.5 Grounding of the power ..................................................................................................... 15

2.6 Alarm contact ..................................................................................................................... 15

2.7 Fiber optic backbone .......................................................................................................... 16

2.8 Calculating the delay time .................................................................................................. 16

2.9 Spur Segments ................................................................................................................... 17

2.10 Termination ........................................................................................................................ 17

2.11 Baudrate switch ................................................................................................................. 18

2.12 Robust Repeating mode ..................................................................................................... 19

2.13 Channel Redundancy.......................................................................................................... 19

3. Technical Data ProfiHub B2FO2+ ................................. 21

4. Sales offices and distributors ....................................... 24

5. Order codes .................................................................. 29

6. Glossary ........................................................................ 30

ProfiHub B2FO2+ User Manual – v2.1.0 | 29 December 2016 | © PROCENTEC 3/38

7. About PROCENTEC ....................................................... 33

8. Revision history ............................................................ 34

9. Notes ............................................................................ 35

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1. Product description

1.1 Introduction

ProfiHub B2FO2+ is an advanced, flexible and robust network component for PROFIBUS DP installations, to
create fiber optic 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 B2FO2+ 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 2 galvanic isolated
transparent repeaters and an optical link module in one device. 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 B2FO2+ refreshes a received message on one Channel and transfers it to all the other Channels
(chicken foot topology).

Because the ProfiHub B2FO2+ 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 12 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).

Fig. 1 - ProfiHub B2FO2+

ProfiHub B2FO2+ User Manual – v2.1.0 | 29 December 2016 | © PROCENTEC 5/38

Intelligent Internal

Backbone

C1 C2

Copper Channel 1 and 2

Power supply 2

Power supply 1

Alarm contact

FO1

FO2

FO Channel 1 and 2

DP Fiber Optic Backbone

Wiring problems

do not spread to

the other spur lines

Each spur line
can be 200m
at 1,5 Mbps

1.2 Product features

 2 Galvanic isolated outgoing channels (repeater segments).
 2 Fiber Optic channels.
 Transparent for all PROFIBUS DP protocols.
 DP - RS 485 specifications for each channel.
 Cable redundancy for copper channel 1 and 2
 9.6 Kbps to 12 Mbps.
 31 devices per channel.
 3000 m cable length for FO channel 1 and 2
 1200 m spur line length for copper channel 1 and 2 (depends on transmission speed).
 Redundant power supply
 No limit in serial placement or cascading of ProfiHubs.
 Alarm contact, with manual reset button.
 No address required.
 Integrated termination facilities (switches).
 Configurable grounding system (direct or capacitive).
 IP 20 classification
 Increased temperature range

Fig. 2 - ProfiHub connections

Fig. 3 - Long spur lines to instruments and the possibility to remove/insert them during operation. Short circuit protection on each
spur line is automatically provided

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ProfiHub B2+FO2

1.3 Application areas

 Create Fiber Optic backbones
 Dynamic spur lines to actuators, flow meters and pH analyzers.
 Removable drives and motors.
 Pull/Plug motor control centers (drawers).
 Roof mounted devices in tank farms.
 Barrier for non-galvanic isolated equipment.
 Networks with requirement for High Availability/uptime
 Large star/tree structured networks.

1.4 Additional benefits

 Hot slave insertion and removal during operation.
 Short circuit protection on each Channel.
 Option to create a redundant path to other supporting Hubs or ComBricks
 Compact and robust construction.
 Status and error display (per Channel).
 Suitable for all DP cables.
 Conveniently arranged networks.
 Easy extendable installations.
 On-board DB9 female connector on each channel for maintenance activities.
 Cost Savings

Fig. 4 - Creating a fiber optic backbone increases network reliability and network overview. It is also possible to mix ProfiHubs with
ComBricks

ProfiHub B2FO2+ User Manual – v2.1.0 | 29 December 2016 | © PROCENTEC 7/38

RS 485

Circuit

A
B

Isolation

Circuit

Powered

Termination

Isolated Area

CC

DGND

Indirect grounding

Term.
Switch

RX-OK

ERROR

Intelligent
Backbone

I

To direct grounding of

other Channels

1.5 Channel Structure

Each copper channel is electrically isolated and internally connected to the transparent intelligent backbone.
The termination is switchable and powered by the ProfiHub. The shielding of the PROFIBUS cable can be
directly grounded or indirectly grounded (see paragraph 1.6).

Fig. 5 - Channel structure

1.6 Grounding System

The ProfiHub B2FO2+ can be grounded by 3 methods:

1) Direct grounding on the Ground Rail

2) Indirect grounding (through a capacitor)

3) Combination of direct and indirect.

The power supply must be grounded directly on the Ground Rail. The shielding of the PROFIBUS cables can be
directly or indirectly grounded. If you do not want to ground all or some cables to the common ground, i.e.
compensating current, the cable shielding must be connected to pin ‘I’ which stands for Indirect grounding. A
capacitor with a parallel high value resistor will separate the 2 potentials (see Fig. 5), ensuring protection of
the signal against non-DC disturbances.

If by accident on 1 channel the Direct Grounding is connected with the Indirect Grounding, the connection to
the Direct Grounding bypasses the capacitor in the Indirect Ground connection. The current on the shield will
flow to Direct Ground.

ProfiHub B2FO2+ User Manual – v2.1.0 | 29 December 2016 | © PROCENTEC 8/38

Parameter

Value

Wires

2 (twisted)
Impedance

135 .. 165 Ohm at 3 to 20 MHz
Capacity

< 30 pF/m
Loop resistance

< 110 Ohm/km
Wire diameter

> 0.64 mm
Wire area

> 0.32 mm2

Fig. 6 - Cable lengths for PROFIBUS DP

Fig. 7 - PROFIBUS DP cable specifications

1.7 Cable lengths for PROFIBUS DP

The copper cables on Channels 1 and 2 must comply with the PROFIBUS DP cable specifications for RS 485 (Fig.

6).

1.8 Cable types for PROFIBUS DP

The cable type must comply with the PROFIBUS DP cable specifications for RS 485 (Fig. 7).

ProfiHub B2FO2+ User Manual – v2.1.0 | 29 December 2016 | © PROCENTEC 9/38

G62.5/ 125

G50 / 125

ISO / IEC 11801 (OM1)

ISO / IEC 11801 (OM2 or better)

IEC 60793-2-10 type A1b

IEC 60793-2-10 type A1a

TIA / EIA 492AAAA

TIA / EIA 492AAAB-A

ITU-651.1

ITU-651.1

OFF

Blinking

ON

POWER 1 / 2

 Power is not switched

on or an internal error

 Power supply not

stable, redundant power
supply interrupted or an
internal failure

 Power supply OK

READY

 Power is not switched

on or an internal error

 Trying to detect the

transmission speed, but
has not locked it yet

 The transmission

speed has been detected

FRNC cable

Shipboard cable

Festoon cable

Flexible cable

Food cable

Robust cable

Trailing cable

Hybrid cable

Fig. 8 - Cables with different protection sheaths

The ProfiHub B2FO2+ can handle cables based on multiple protection sheaths with an overall cable diameter
between 6 to 12 mm (Fig. 8).

1.9 Cable lengths for fiber optic

The maximum cable length for fiber optic cables is 3 kilometers if G62.5 / 125 cable is used.

1.10 Cable types for fiber optic

The following cable types can be used with the ProfiHub B2FO2+:

1.11 Status LEDs

The Status LEDs on the ProfiHub are very useful for diagnostics.

ProfiHub B2FO2+ User Manual – v2.1.0 | 29 December 2016 | © PROCENTEC 10/38

FO RX-OK

 No communication

detected on this channel

 1 or more devices

communicating on this
channel

 Internal error

FO ERROR

 No problem has been

detected

 Problem in the cabling

has been detected.

 Problem in the cabling

has been detected

Channel RX-OK

 There is no

communication detected
on this channel

 1 or more devices

communicating on this
channel

 Internal error

Channel ERROR

 No problem has been

detected

 Problem in the cabling

has been detected

 Problem in the cabling

has been detected

INT. TERM

Termination for this
channel is OFF

 Internal error

Termination for this
channel is ON

1.12 The red Error LED

The red error LEDs will blink shortly if a corrupt message enters the ProfiHub. More specifically, this can be a
Parity error (the parity checksum of the byte is incorrect) or a Framing error (the FCS byte is different than the
real message). It is necessary to investigate further with an oscilloscope to find out what the problem is. This
can easily be done with ProfiTrace.

Another reason for the red error LED is a problem in the redundant cabling (if the ProfiHub is set to redundant).
If the redundant line is fixed, press the ‘Alarm Reset’ button.

It can also be that the baudrate is not locked (no PROFIBUS master on the bus) or the baudrate was set
manually and incorrectly with the rotary switch.

ProfiHub B2FO2+ User Manual – v2.1.0 | 29 December 2016 | © PROCENTEC 11/38