VEGA FIELDBARRIER User Manual

MANUAL

FIELDBARRIER

PROCESS AUTOMATION

FIELDBARRIER

With regard to the supply of products, the current issue of the following document is appli­cable: The General Terms of Delivery for Products and Services of the Electrical Industry,
published by the Central Association of the Electrical Industry (Zentralverband Elektrotech­nik und Elektroindustrie (ZVEI) e.V.) in its most recent version as well as the supplementary

clause: "Expanded reservation of proprietorship"

FieldBarrier

1 Introduction ..............................................................................................3

2 Validity of these instruction manual ......................................................4

3 Symbols used ...........................................................................................5

4 Instruction manual ...................................................................................6

4.1 Intended use ............................................................................................................ 6

4.2 Marking .................................................................................................................... 7

4.3 Ambient conditions ................................................................................................ 7

4.4 Mounting and dismounting .................................................................................... 7

4.4.1 Mounting and dismounting the F2D0-FB-Ex4.*** ..................................................... 7

4.4.2 Mounting/dismounting of RD0-FB-Ex4 ..................................................................... 7

4.5 Commissioning and installation ........................................................................... 8

4.5.1 Commissioning and installation of the F2D0-FB-Ex4.*** .......................................... 9

4.5.2 Commissioning and installation of RD0-FB-Ex4 ..................................................... 10

4.6 Grounding / shielding of the F2D0-FB-Ex4.*** and RD0-FB-Ex4 ...................... 10

4.7 Repair and maintenance ...................................................................................... 11

4.8 Fault elimination ................................................................................................... 11

4.9 Disposal ................................................................................................................. 11

5 General ....................................................................................................12

5.1 Range of application of the FieldBarrier ............................................................ 12

5.2 Introduction to intrinsic safety for fieldbus systems ........................................ 12

5.2.1 The FISCO model ................................................................................................... 13

5.2.2 The Entity model ..................................................................................................... 14

5.2.3 Topologies .............................................................................................................. 15

5.2.4 Grounding ............................................................................................................... 17

6 Planning for a fieldbus application ......................................................19

6.1 Functional description of the FieldBarrier ......................................................... 19

6.2 Topologies in combination with the FieldBarrier .............................................. 21

6.2.1 Topologies on intrinsically safe outputs .................................................................. 21

6.2.2 Topologies of the trunk in connection with the FieldBarrier .................................... 22

6.3 Dimensioning of a fieldbus segment .................................................................. 23

6.4 Terminating the trunk with a fieldbus terminating resistor. ............................. 23

6.5 Mechanical dimensions ....................................................................................... 24

6.5.1 Mechanical dimensions of the R version ................................................................ 25

08/2007 122329

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany [phone] • USA [phone] • Singapore [phone] • Internet http://www.pepperl-fuchs.com

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FieldBarrier

7 Commissioning the FieldBarrier .......................................................... 26

7.1 Mounting FieldBarriers ......................................................................................... 26

7.1.1 Mounting the FieldBarrier F*D0-FB-Ex4.*** ........................................................... 26

7.1.2 Handling F*D0-FB-Ex4.CG cable glands ................................................................27

7.1.3 Handling the F*D0-FB-Ex4.CGB and F*D0-FB-Ex4.CGS cable gland ................... 28

7.1.4 Handling the F*D0-FB-Ex4.CGAB cable gland .......................................................29

7.1.5 Mounting the stop plug ............................................................................................ 30

7.1.6 Mounting the FieldBarrier RD0-FB-Ex4 ..................................................................30

7.2 FieldBarrier connections ...................................................................................... 30

7.3 Grounding .............................................................................................................. 31

7.4 Fieldbus termination ............................................................................................. 31

7.5 Displays and error messages. ............................................................................. 32

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

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1 Introduction

The FieldBarrier F*D0-FB-Ex4.*** and RD0-FB-Ex4 connect up to 4 intrinsically safe
field devices. It is connected via non-intrinsically safe connections to the trunk of a
fieldbus with a physical layer in accordance with IEC 61158-2.

The FieldBarrier works exclusively on the physical layer, which makes it independent
of the protocol. This allows it to be substituted for any field bus with a physical layer
in accordance with IEC 61158-2. This includes the FOUNDATION fieldbus and the
PROFIBUS MBP, for example.

More recent documentation also refers to PROFIBUS MBP in connec­tion with PROFIBUS PA. MBP stands for Manchester Bus powered.
PROFIBUS PA and PROFIBUS MBP are identical. The following sec­tion refers only to the term PROFIBUS MBP that has just been intro­duced.
PROFIBUS MBP-IS refers to the intrinsically safe version of the
PROFIBUS MBP.

The trunk of the fieldbus can be supplied via additional terminals to other FieldBarriers
(cascading) or other fieldbus stations.

If the trunk is mounted in increased safety, the FieldBarrier can be mounted in the
Zone 1 and Zone 22 (non-conductive dust) of a hazardous area. The terminals for the
trunk are designed in increased safety EEx e.

If the FieldBarrier is the last device connected to the trunk, it must be terminated with
a fieldbus terminator. A fieldbus terminator is integrated into the FieldBarrier for this
purpose, and can be turned on when it is needed.

The trunk is galvanically separated from the outputs. 40 mA per output is available for
the intrinsically safe power supply of the field devices. The number of field devices
that can actually be operated on an output depends on their power consumption.

The line length per output can be up to 120 m and is operated without a fieldbus ter­minator. The outputs correspond to the requirements of PTB Report W-53 (FISCO
Model.) For additional information on this subject, please refer to chapter 5.2.1

Each output has a voltage and current limit. This prevents the entire fieldbus segment
from failing if a fault occurs on just one output.

The technical data can be found in the data sheet.

FieldBarrier

08/2007 122329

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

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FieldBarrier

2 Validity of these instruction manual

This instruction manual descibes the following Pepperl+Fuchs products:

• the FieldBarrier F2D0... for panel mounting in aluminum field housings.

• The FieldBarrier RD0... for mounting on a 35-mm top hat section rail in accordance
with EN 50 022.

A corresponding declaration of conformity may be requested from the
manufacturer.

The manufacturer of the product, Pepperl+Fuchs GmbH in D-68301 Mannheim, has
a certified quality assurance program in accordane with ISO 9001.

ISO9001

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

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3 Symbols used

This symbol warns of a danger.
In the event the warning is ignored, the consequences may range from
personal injury to death or from damage to equipment to destruction.

This symbol warns of a possible fault.
Failure to observe the instructions given in this warning may result in
the device and any facilities or systems connected to it developing a
fault or even failing completely.

This symbol draws your attention to important information.

FieldBarrier

08/2007 122329

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany [phone] • USA [phone] • Singapore [phone] • Internet http://www.pepperl-fuchs.com

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FieldBarrier

4 Instruction manual

These instructions apply in conjunction with the respective data sheets. You can ac­cess the data sheets at www.pepperl-fuchs.com

The operator of the system bears the responsibility in terms of planning,
mounting, commissioning, operation and maintenance, especially in
conjunction with applications in areas subject to the danger of explo­sion.

The data sheet lists the electrical characteristics of the EC declaration of conformity
and is considered and integral part of the instruction manual.

4.1 Intended use

The FieldBarrier serves as a galvanic isolation between intrinsically safe and non-in­trinsically safe fieldbuses.

The FieldBarrier can be used for all fieldbus systems using "Manchester Coding Bus
Powered“ physical layout in accordance with IEC 61158-2.

The inputs of the field FieldBarrier are designed in the "Increased safety“ ignition pro­tection method. The outputs of the FieldBarrier are designed in the "Intrinsic Safety“
ignition protection method and make it possible to operate intrinsically safe field de­vices.

Data sheets for FieldBarriers contain the electrical data of the EC declaration of con­formity and are considered an integral part of the instruction manual.

The FieldBarrier may be installed in hazardous areas of category 2G / Zone 1 and
Zone 22 (non-conductive dust).

FieldBarriers that are operated in general electrical systems must not
thereafter be operated in electrical systems that are connected with
hazardous areas.

.

Laws and/or regulations governing the use or intended usage goal must be observed.

FieldBarriers are only approved for proper professional usage in accordance with the
intended purposes. Improper handling will void any claim made under the warrantee
and any manufacturer's liability.

Protection of operating personnel and the system is not ensured if the
module is not used in accordance with its intended purpose.

The device can only be operated by trained professionals in accordance with the
available instruction manual.

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

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4.2 Marking

FieldBarriers are identified by:

FieldBarrier F2D0-... FieldBarrier RD0-...

Pepperl + Fuchs Pepperl + Fuchs

D-68307 Mannheim D-68307 Mannheim

F2D0-FB-Ex*.*** RD0-FB-Ex*.***

PTB 02 ATEX 2086 PTB 02 ATEX 2086

¬ II 2 (1 G/D) G Ex me [ia] IIC T4 ¬ II 2 (1 G/D) G Ex me [ia] IIC T4
¬ Ex tD A22 IP54 T135 °C

(non-conductive dust)

4.3 Ambient conditions

For the ambient temperature range, please refer to the respective data sheet.

4.4 Mounting and dismounting

Commissioning and installation must only be performed by specialist who are trained
specifically for this purpose.

Recognized rules of the technology and setup requirements must be maintained dur­ing mounting and dismounting. Especially for tasks on electrical systems, special
safety requirements must be observed. Special attention must be paid to the following
points:

1. Has the FieldBarrier been installed in accordance with specifications?

2. Is the FieldBarrier free of damage?

4.4.1 Mounting and dismounting the F2D0-FB-Ex4.***

The housing of FieldBarrier F2D0-FB-Ex4.*** is designed in protection class IP 67. It
is intended for panel mounting. 2 screws with a diameter of 6 mm should be used for
mounting.

The mounting material should be selected according to the nature of the sub-surface
(the wall). When selecting mounting material, care must be taken that it will ensure a
secure fastening. The torque to be used for the mounting screws depends on the
screws being used.

Type F*D0-FB-Ex4.CG should be mounted so that the cable glands are protected
from the effects of mechanical hazards.

The cover screws of the FieldBarrier should be tightened with a torque of 2.5 Nm.

4.4.2 Mounting/dismounting of RD0-FB-Ex4

FieldBarrier RD0-FB-Ex4 is designed for mounting on a 35-mm DIN rail in accordance
with EN 50 022. It must be mounted in a housing that corresponds to at least protec­tion class IP 54. The housing must also have an EC declaration of conformity in ac­cordance with EC 94/9.

FieldBarrier

08/2007 122329

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany [phone] • USA [phone] • Singapore [phone] • Internet http://www.pepperl-fuchs.com

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FieldBarrier

4.5 Commissioning and installation

The FieldBarrier may be installed according to its designation in Zones 1 and Zone 22
(non-conductive dust) .

The Declaration of conformity must be observed. It is especially impor-

tant to maintain any "Special conditions" that may be indicated.

When installing intrinsically safe fieldbus segments, EN 60079-14/IEC 60079-14 must
be observed. For the Federal Republic of Germany, the "National Foreword“ of DIN
EN 60079-14/VDE 0165 Part 1 must also be observed.

When using the outputs designated intrinsically safe in Dust-Ex range
"D", only field devices certified for this purpose may be connected.
When connecting intrinsically safe field devices with the FieldBarrier,
the highest level of explosion protection should be considered (Proof of
Intrinsic Safety).

The switch for the internal bus termination can be activated even during operation.

The following identifying values must be observed when connecting fieldbus trans­mission lines:

• For the cable parameters to be observed, please refer to chapter 5.2.1

• The insulating length of the wire is 9 mm

• Wire cross-section 0.2 mm² to 2.5 mm² or AWG 24 to 14

• Whenever finely stranded conductors must be used, the strand ends must be pro­tected from fraying, for example by using end splices.

• Tightening torque of the screw terminals (if present) 0. 4... 0.5 Nm

• Tightening torque of the screwed connections of cable glands for FieldBarriers
F2D0...
The tightening torques of the slotted nuts depend on the cable used and must
therefore be determined by the user. The cap nuts must be securely tightened.
Tightening the cap nuts too tight can have a negative effect on the protection class.
The following figures should be taken as rough guides:

Type Cap nut Lower part

F2D0-FB-Ex4.CG 2.5 Nm 3.75 Nm
F2D0-FB-Ex4.CGB 4.17 Nm 6.25 Nm
F2D0-FB-Ex4.CGS 4.17 Nm 6.25 Nm

F2D0-FB-Ex4.CGAB 22 Nm 28 Nm

A fieldbus transmission line with an insulation voltage between the bus line and shield
of at least 500 V must be used for intrinsically safe fieldbus segments.

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

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4.5.1 Commissioning and installation of the F2D0-FB-Ex4.***

Only permanently laid cables and lines must be inserted into the cable glands.

The screw plugs must only be replaced by cable glands who are adapted for the in­tended kind of use. By mounting the cable glands pay attention to the according in­struction manual.

For the permissible cable diameters, please refer to the respective data sheet. The
operator must provide an appropriate strain-relief clamp (for example with a suitable
cable clamp). The mounting notes in chapter 4.4 must be observed.

FieldBarrier

Connections for
intrinsically safe
fieldbus segments

Switches for the
internal bus connection

LEDs

Connections for the
non-intrinsically safe
fieldbus

Cover

Fastening options
for connection cables
by using cable ties

Cable gland for the
intrinsically safe
fieldbus segments

Cable gland for the
non-intrinsically safe
fieldbus

Cable glands that are not in use must be closed off with a corresponding stop plug or
replaced by an appropriate screw plug. Stop plugs and screw plugs must have an EC
declaration of conformity.

The ambient temperature range can be restricted by the stop plug.
By mounting the cable glands pay attention to the according instruction
manual.

For examples of stop plugs and screw plugs, please refer to the respective data
sheets.

In order to maintain the IP 67 protection class, all unused cable glands
(M16 and M20) must be plugged with a M20 blind plug.

For metallic housings in hazardous areas, a suitable potential equalization per EN 60
079 is required. A grounding screw is provided on the housing for this purpose. The

08/2007 122329

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany [phone] • USA [phone] • Singapore [phone] • Internet http://www.pepperl-fuchs.com

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