Belden Hirschmann OZD Profi G12DU ATEX 1, Hirschmann OZD Profi G12DE ATEX 1, Hirschmann OZD Profi G12DK ATEX 1 User Manual

Manual

PROFIBUS Fiberoptic Repeater
OZD Profi G12DU ATEX 1
OZD Profi G12DK ATEX 1
OZD Profi G12DE ATEX 1

Hirschmann. Simply a good Connection.

S0S1 S2S3 S4S5 S6S7

System

CH1

CH2

CH3

CH3

CH2

24V*24VDIBDI

A

0V0V FG FG

DOBDOACH0VFNCFNOCH3CH

2

F

NICHT UNTER SPANNUNG ÖFFNEN
DO NOT OPEN WHILE EN ERGISED

NE PAS OUVRIR SOUS TE NSION

NON APRIRE SOTTO TENSIONE

NÃO ABRIR QUANDO ENERGIZADO

943881321000000001

Ser.-No.: 0123456789

The specified performance characteristics are binding
only if these have been expressly agreed at the time of
contract conclusion. We have checked the contents of
the brochure for com plia nce with the specified hardware
and software. However, devia tions cannot be ruled out,
we hence do not guarantee complete compliance.
Details in the brochure are checked regularly. Necessary
corrections are included in the subsequent editions. Sug ­gestions for improvement are welcome.

Technical changes reserved.

Transfer and copying of this docum ment, utilisation and
disclosure of the contents is not permitted, unless
expressly conceded. Contraven tions are liable for com­pensation. All rights reserved, particularly for the case of
granting of patents or regsitration of utility model.

© Hirschmann Automation and Control GmbH

All Rights Reserved

Note

We would like to emphasise that the contents of this
operating manual are not a part of an earlier or existing
agreement, commitment or legal relationship or an
amendment thereof. All obligations of Hirschmann arise
from the purchase contract, which also include the com­plete and exclusively applicable guarantee regulations.
These contract ual warranty agreements are neither
extended or limited by the versions of this operat ing man­ual.

Moreover, we would like to emphasise that in the interest
of clarity in this operating manual, not every imaginable
problem related to the use of this device can be
described. Should you require more information or
should other problems occur, which have not been dealt
with in detail in the operating manual, you can get the
required information about the Hirsch mann partner in
your vicinity or directly request the same from
Hirschmann (see address in section “information on CE
marking“.

Order numbers

OZD Profi G12DU ATEX 1 943 881-321

OZD Profi G12DK ATEX 1 943 882-321

OZD Profi G12DE ATEX 1 943 883-321

Manual 039 677-001
PROFIBUS Fiberoptic Repeater
OZD Profi G12DU ATEX 1
OZD Profi G12DK ATEX 1
OZD Profi G12DE ATEX 1

3

Contents

OZD Profi G12D... ATEX 1 V. 03 07/2014

1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Safety guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.3 Operator of the system and personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.4 Relevant laws, standards, guidelines and other documentation . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.5 Information on marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.6 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.7 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.7.1 General information on assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

1.7.2 Assembly in zone 1 or zone 21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

1.7.3 Assembly in zone 2 or zone 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

1.8 Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.9 Installation and startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.10 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.11 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.12 Delivery, Transport and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.13 Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.14 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3 General functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.1 Functions independent of the mode of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.2 Functions dependent on the mode of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4 Network topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.1 Line topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.1.1 Line topology with fibre optic path monitoring and segmentation . . . . . . . . . . . . . . . . . . . . 20

4.1.2 Line topology without fibre optic path monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.2 Star topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.3 Redundant optical ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.4 Combination with network topologies of ex-zone 2, 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.1 Design guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.1.1 Assembly in zone 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.1.2 Assembly in zone 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.1.3 Assembly in safe area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.1.4 Electromagnetic Compatibility (EMC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.1.5 Suppression of switched inductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.1.6 Spatial arrangement of devices and lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.1.7 Model/design/version of shield connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Contents

Contents

4

OZD Profi G12D... ATEX 1 V. 03 07/2014

5.2 Startup process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.3 Assemble/disassemble repeater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.3.1 Assembly of OZD Profi G12DU ATEX 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.3.2 Assembly of OZD Profi G12DK ATEX 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

5.3.3 Assembly OZD Profi G12DE ATEX 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

5.4 Setting the mode, connection/disconnection of terminating resistors . . . . . . . . . . . . . . . . . . . . . 34

5.4.1 Setting the mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.4.2 Connection/disconnection of internal terminating resistors . . . . . . . . . . . . . . . . . . . . . . . . 35

5.5 Connect optical bus cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

5.6 Connect electrical bus cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

5.7 Connect functional earth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.8 Connect signal contact cables (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.9 Define reception level of optical channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

5.10 Connect operating voltage supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.11 Monitor LED indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

6 Trouble shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

6.1 LED indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

6.2 Fault finding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

6.3 Problem report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

6.4 Contact address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

7 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

7.1 Configuration of redundant optical rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

8 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

9 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

A Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

A.1 Define reception level of optical channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

5

2 Safety

OZD Profi G12D... ATEX 1 V. 03 07/2014

1 Safety

The safety chapter is applicable as an operating manual
Different procedures and instructions in this operating
manual require special precautionary measures for
ensuring safety of the involved persons.

1.1 Validity

This manual contains guidelines, which must be
observed for your personal safety and for avo iding
property damage. The information is high lighted by a
warning triangle and depending upon the degree of risk
is presented as follows:

z

Danger!

means death, serious inj ury or extensive damage to
property may occur, if the appropriate precautions
are not taken.

z

Warning!

means death, serious inj ury or extensive damage
to property may occur, if appropriate precau­tions are not taken.

z

Caution!

means a minor inj ury or property dam age may
occur , if appropriate precautions are not taken.

Note:

is important information on the product, handling of the
product or the respective part of documentation, which
must be paid special attention .

1.2 Safety guidelines

Responsibility with respect to planning, assembly, start­up, operation and maintenance is that of the operator of
the system.
Assembly, installation, startup, maintenance and opera­tion of all devices must be done by qualified personnel
only. The operating manual must be read and under­stood.

1.3 Operator of the system and personnel

2 Safety

6

OZD Profi G12D... ATEX 1 V. 03 07/2014

Laws, standards or guidelines applicable for the usage
and/or the planned intended use must be complied with
just like the appropriate data sheets, declarations of con­formity, EC-type examination certificates and certificates
where applicable.

Guideline 94/9 EC must be observed for explosive haz­ardous areas.

1.4 Relevant laws, standards, guidelines and other documentation

7

The devices comply with the regulations of the
following European directive:

89/336/EEC
Council directive for approximation of legal pro visio ns of
member states for electromagnetic compatibility
(changed by directive 91/263/EEC, 92/31/EEC and
93/68/EEC).

Prerequisite for the compliance of EMC limits is the strict
compliance of guidelines specified in the description and
operating manual.

Records of the EC declarations of conformity are kept in
accordance with the above mentioned EC directive for
the compe tent authorities at:

Hirschmann Automation and Control GmbH
Stuttgarter Strasse 45-51
72654 Neckartenzlingen
Germany
Telefon [phone]
E-Mail [e-mail]

The product is usable in the residential area (residential
area, business and commercial areas, small enterprises)
as well as in the industrial area.

– Interference immunity:

EN 61000-6-2:2001

– Emitted immunity:

EN 55022:1998+A1:2000+A2:2003 Class A

z

Note!

This equipment belongs to class A. This may
cause radio interference in the residential area. In this
case the operator may request execution of appropriate
measures and pay for the same.

Marking of devices

OZD Profi G12DU devices are marked as per EU-type
examination certificate PTB 09 ATEX 2044 X as follows:

II 2 G Ex e mb op is [ib] IIC T4 Gb

OZD Profi G12DK and OZD Profi G12DE devices are
marked as per EU-type examination certificate
PTB 09 ATEX 2045 as follows:

II 2 G Ex e mb [ib] op is IIC T4

II 2 D Ex tD A21 IP 66 T 130 °C

1.5 Information on marking

7

2 Safety

OZD Profi G12D... ATEX 1 V. 03 07/2014

The PROFIBUS Fiberoptic Repeater in plastic or stain­less steel protective housing is intended for use in explo­sive hazardous area.
The PROFIBUS Fiberoptic Repeater (DIN-rail module)
without plastic or stainless steel protective housing must
be used only as a replacement for a defective PROFIBUS
Fiberoptic Repeater in plastic or stainless steel protective
housing. Another use is possible after joint ATEX
approval with an approved protective housing.

The PROFIBUS Fiberoptic Repeater is used as an inter ­face between electrical PROFIBUS signals from the
explosive hazardous area (ex-area) and the safe area
(non-ex-area). Bus and auxiliary power circuits are isolat­ed galvanically.

PROFIBUS Fiberoptic Repeater are intended for use in
the optical PROFIBUS networks. They enable implemen­tation of electrical PROFIBUS interfaces (RS 485 level) in
optical PROFIBUS interfaces and vice-versa.

By using the known advantages of the optical transmis­sion technology, the devices can be integrated in the
existing PROFIBUS fieldbus networks. Likewise, com­plete structure of a PROFIBUS fieldbus network with
devices in line, star and ring topology is possible in any
combination.

Applicable laws, standards or guidelines must be
observed for usage or the planned purpose. The devices
are approved only for proper and intended use. Any
guarantee and producer responsibility becomes void in
case of infringement.

The devices are not suitable for separation of signals in
power measurement, unless stated specifically in the
appropriate data sheet.

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

1.6 Intended use

1.7 Assembly

1.7.1 General information on assembly

Familiarise yourself with the device prior to assembly,
installation and startup and read this manual carefully.
The device must not be installed on places with aggres­sive vapours.
Observe BGR A3 (the Federal Institute for Geosciences
and Natural Resources) when working under voltage.
Installation requirements in accordance with IEC/EN
60079-14 / IEC/EN 60079-25 and national deviations
must be com plied with.
The devices are designed for use in pollution degree 1
and overvoltage category II as per IEC/EN 60664-1 .

If devices are used in general electrical systems, these
must not be used thereafter in electrical systems, which
are connected to explosive hazardous areas.
The in-built PROFIBUS Fiberoptic Repeater in ex-e­housing contains non-intrinsic circuits. The non-intrinsic
circuits must be covered so that the optical fibre connec­tions are accessible during ongoing operation. The cover
must attain protection class IP30 as per IEC/EN 60529.

The devices are designed according to protection class
encapsulation as per IEC/EN 60079-18. The housing, the
seal and the sealing agent must not be damaged.

The equipment must not be operated with dust deposits
>_ 5 mm thickness as per IEC/EN 61241-1. Terminals in
increased safety are covered. The cover may be removed
any time during assembly in safe area.

The device types can be installed outside the ex-area.
The housing cover may be opened for servicing during
ongoing operation.

Non-used inlet openings are to be sealed securely with
certified sealing plugs in order to comply with the IP pro­tection class. Likewise, seal inserts appropriate for the
respective cable diameter must be used.

2 Safety

8

OZD Profi G12D... ATEX 1 V. 03 07/2014

Excessive force on the glands may endanger the protec­tion class. For ensuring protection class IP 54:



all seals must be fitted intact and correctly,



all screws of the housing/housing cover must be
tightened with the appropriate torque,



only cables of appropriate sizes must be used in the
cable glands,



all cable glands must be tightened with the appropri­ate torque,



all free cable glands must be sealed with sealing
plugs.

The PROFIBUS Fiberoptic Repeater are delivered in
housings of protection class IP 66. The same provisions
are applicable for this.

1.7.2 Assembly in zone 1 or zone 21

The devices must be installed in a housing with minimum
protection class IP 54 as per gas-ex in zone 1.

IP 6* must be complied for conductive and non-conduc-

tive dust.

Temperature class T4 specified in the EC-type examina­tion certification PTB 04 ATEX 1030 must be maintained
at maximum ambient temperature of the housing of
<_60 °C.

The housing cover may be opened in zone 1 for servicing
during ongoing operation.

Terminals in increased safety are covered.

The cover may be removed only if there is no explosion
hazard circuits are switched to zero potential before­hand.

1.7.3 Assembly in zone 2 or zone 22

The devices must be installed in a housing with minimum
protection class IP 54 as per gas-ex in zone 2. For the
assembly, besides devices in housing design, even DIN
rail modules are available as per the data sheet. The
modules must be installed as asso ciated equipment in
safe area or in su itable housing in zone 2.

IP 6* must be complied for conductive and non-conduc-

tive dust.

Temperature class T4 specified in the statement of con­formity must be maintained at maximum ambient ­temperature of the housing of <_ 60 °C under normal
operating conditions.

The housing cover may be opened in zone 2 for servicing
during ongoing operation. In Zone 22 the housing cover
may be opened only in the current-free state.

All terminals are covered.

The cover may be removed in zone 2 and also in the safe
area for servicing. The terminals are then accessible.

Select the assembly location such that climatic limit val­ues specified in the technical data are maintained.

9

2 Safety

OZD Profi G12D... ATEX 1 V. 03 07/2014

If the device is installed in zone 1, the housing, in which
the device is installed, must be suitable for the intended
use. Examination certificate as per directive 94/9/EC
must be obtained for the housing.

Installation in housing not examined by Hirschmann
together with the fibre optic coupler is not permitted. For
this, separate certification of a notified body may be
obtained. Following points must be observed/ evaluated:



IP protection class as per IEC/EN 60529



resistance to light as per IEC/EN 60079-0



impact strength as per IEC/EN 60079-0



chemical resistance as per IEC/EN 60079-0



heat resistance as per IEC/EN 60079-04



electrostatics as per IEC/EN 60079-0

If the seal of the housing cover or a seal of the cable
entry is damaged, it should be replaced with a new hous­ing cover or cable entries of the manufacturer.

1.8 Housing

The device must be zero-potential during installation and
maintenance. Voltage must be applied only after com­plete assembly and connection of all circuits required for
the operation.

The devices must be connected only to the supply volt­age printed on the type plate. The devices are designed
only for operation with the safety low voltage. According­ly, only PELV circuits or optionally SELV circuits with
voltage restrictions as per IEC/EN 60950 must be con­nected to the supply voltage connections and the sig­nalling contact. In case that you operate the module with
external voltage: supply the system only with a safety low
voltage as per IEC/EN 60950.

The optical fibres have an inherently safe optical radia­tion and must be interconnected only with other inherent­ly safe optical equipment. For this, preferably a similar
device of type OZD Profi G12D... ATEX 1 must be used.

Installation regulations as per IEC/EN 60079-14 (VDE
0165-1) for zone 1 or IEC/EN 60079-15 for zone 2 as well
as directive 99/92 EC must be complied with.

The devices must be installed by a qualified electrician in
consensus with the nationally applicable standards in
zone 1 or zone 2 or zone 21 and zone 22.

Explosion group specified on the housing, the tempera­ture class and special ambient conditions must be com­plied with!

Modifications and changes to the device are not permit­ted.

The device must be operated as per the intended pur­pose in undamaged and perfect condition!

Only original parts from the manufacturer must be used
as spares.

If foreign bodies enter, these must be removed from the
device before the initial startup!

When carrying any work on the device, observe the
national safety and accident prevention regulations and
warnings specially marked in the operating manual!

For installation and operation of associated equipment,
comply with the applicable safety regulations as per the
ordinance on industrial safety and health and equipment
and Product Safety Act and the generally recognised
rules of the technology!

Before starting the device with the help of technical data,
convince yourself that the operating conditions have
been complied with and all polarities of the connections
have been selected correctly. Also check the auxiliary
power supply and your work area.

1.9 Installation and startup

2 Safety

10

OZD Profi G12D... ATEX 1 V. 03 07/2014

z

Warning!

LASER CLASS 1 as per IEC/EN 60825-1 (2001).

The devices must not be repaired, changed or mani ­pulated. In case of defect, the product must be always
replaced by an original one.

If the seal of the housing cover or a seal of the cable
entry is damaged, it should be replaced with a new hous­ing cover or cable entries of the manufacturer.

The insulation must reach up to the terminal. The con­ductor itself must not be damaged.

Fine-wired cables must be secured with a cable lug. If
two cables must be led to a common terminal, a double
cable lug must be used.

Generally only certified cable entries and sealing plugs
must be used. Trumpet shaped cable glands or other
suitable entries with additional stress relief must be used
for flexible cables. Assembly guidelines, which are signif­icant for cable entries, must be observed. When using
cable entry with an IP protection class, which is lower
than the one applicable for the device, IP protection
class of the entire device must be reduced. Non-used
inlet openings must be sealed with a certified sealing
plug for getting the minimum protection class. When
installing the cable entries, ensure that seal inserts suit­able for the cable diameter are used during installation.
For excisable seal inserts ensure that the insert is suit­able for the cable diameter.
All non-used cable entries must be sealed with sealing
plugs certified for cable entries. The fibre optic cables
are introduced through glands with slotted seals so that

pre-assembled fibre optic cables can be used. Permissi­ble cladding diameter of the fibre optic cable must be
complied with.
(for this see technical data, cable glands, page 54).

Cable entries must be tightened for ensuring the required
minimum protection class (for this see technical data,
test torque, page 55). Excessive tightening may impair
the protection class.
When tightening the cap nut of the metal cable entries
(type E1WF/e), the gland must be secured against rota­tion with the help of a suitable tool.

The device must be operated only at the specified ambi­ent temperature and at the specified relative humidity
(not condensing).

The housing may be opened under voltage in zone 1. The
IP30 cover of the terminals must not be opened under
voltage. The IP-30 cover
must be replaced after repairs or maintenance. All non­covered control elements such as switches may be
actuated. The fibre optic cable may be plugged or
removed under voltage.

The devices must not be repaired, changed or manipulat­ed. In case of defect, the device must be always
replaced by an original one.
For dust explosion protection, safety measures, which
are same as gas explosion protection are applicable. The
housing must not be opened under voltage if there is
dust explosion hazard. Before opening the housing, the
dust deposits must be removed and electric voltages
must be switched off.

1.10 Operation

The national regulations are applicable for service, main­tenance and testing of associated equipment.

No maintenance is required if the device is operated
properly taking into consideration the assembly instruc­tions and ambient conditions.

According to the ordinance on industrial health and safe­ty the operator of the electrical systems in explosion haz­ard areas is obliged to get these tested from a qualified
electrician for their proper condition.

1.11 Maintenance

11

2 Safety

OZD Profi G12D... ATEX 1 V. 03 07/2014

National regulations applicable for the maintenance/ ser­vice of electrical equipment in explosion hazard areas
must be complied with.
The required maintenance intervals are application-spe­cific and hence must be determined depending upon the
operating conditions. As part of maintenance, primarily
parts on which the type of ignition protection is depen­dent, must be tested (e.g. intactness and tightness of the
housing, integrity of the seals and the cable entries as
well as the required potential equalisation).

If one determines the need for servicing during mainte­nance, kindly take the “Operation” chapter 1.10, page 10
into consideration.
The devices must not be repaired, changed or manipulat­ed. In case of defect, the device must be always
replaced by an original one.

Check the packaging and contents for damage. In case of
damage, notify the post and/or the forwarding agent and
the supplier.
Check the delivery scope based on the order and the
delivery documents for completeness and correctness.
Preserve the original packaging. The device should
always be stored or transported in the original packaging.

Always store the device in dry and clean surroundings.
Note the permissible storage temperature (see technical
data, page 54).

1.12 Delivery, Transport and Storage

The devices must not be repaired, changed or manipulat­ed. In case of defect, the product must be always
replaced by an original one.

1.13 Repairs

The devices and packaging material must be disposed in
accordance with the relevant laws and regulations in the
respective country.
Batteries are not included in the devices, these must be
disposed off separately.

1.14 Disposal

2 Safety

12

OZD Profi G12D... ATEX 1 V. 03 07/2014

13

2 Introduction

OZD Profi G12D... ATEX 1 V. 03 07/2014

2 Introduction

S0S1 S2 S3 S4S5 S6 S7

System

CH1

CH2

CH3

CH3

CH2

24V*24

V

DIBDI

A

0V0V FG FG

DOBDO

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CH
0V

FNCFNOCH3CH

2

F

DO NOT OPEN WH ILE ENERGISED

DO NOT OPEN WH ILE ENERGISED

NE PAS OUVRIR S OUS TENSION

NON APRIR E SOTTO TENSIONE

NÃO ABRIR QU ANDO ENERGIZA DO

943881321000000001

Ser. No.: 0123456789

Terminal blocks with connections for
CH1 (electrical channel),
functional earth,
signalling contact and
operating voltage supply
and with measuring points for the
receive level of the optical
channels

LED
indicators

Switch for operating mode
and internal
terminating resistors

Channel 2 and 3
optical,
BFOC/2.5 sockets

PROFIBUS Fiberoptic Repeater

 OZD Profi G12DU ATEX 1,
 OZD Profi G12DK ATEX 1 and
 OZD Profi G12DE ATEX 1

are planned for use in optical PROFIBUS fieldbus net­works.
They enable implementation of electrical PROFIBUS
interfaces (RS 485 level) in optical PROFIBUS interfaces
and vice-versa.

By using the known advantages of the optical transmis­sion technology, the devices can be integrated in the
existing PROFIBUS fieldbus networks. Likewise, com­plete structure of a PROFIBUS fieldbus network with
devices in line, star and ring topology is possible in any
combination.

Explosion protection

The devices have been approved for operation in the
explosion protection zones 1, 21, 2 and 22 as per AT.
They are thus interfaces between electrical Profibus-sig­nals from the explosion hazard areas (ex-area) and the
safe area (non-ex-area).
The electronic circuits are separated by encapsulation as
per EN 50028/VDE 0170/0171 part 9 from the explosive
atmosphere.
The electrical connections are lead from the electronic
circuits through the encapsulation and placed on the

front side of the housing on the terminals of a terminal
block.

Device variants

The repeater

- OZD Profi G12DU ATEX 1 has no protective housing

- OZD Profi G12DK ATEX 1 has a plastic protective hous­ing (i. e. it conforms to a OZD Profi G12DU ATEX 1 with
plastic protective housing)

- OZD Profi G12DE ATEX 1 has stainless steel protective
housing (i. e. it conforms to a

OZD Profi G12DU ATEX 1 with stainless steel protective
housing)

Application area

The device has electromagnetic compatibility as per EN
61326 and NAMUR recommendation NE21.
It is planned for use in the industrial area.

Channels

Each device has three independent channels (ports),
which in turn comprise a transmitter and receiver.

The electric channel (port 1) is placed on 4 terminals of
the terminal block. For types OZD Profi … DK … and
OZD Profi … DE … with connection cables are led out­wards via PG cable glands.

Fig. 1: OZD Profi G12DU ATEX 1 with location of each port, the terminal blocks and the LED indicators

2 Introduction

14

OZD Profi G12D... ATEX 1 V. 03 07/2014

Fig. 2: OZD Profi G12DK ATEX 1 with location of cable entries and grounding screw

Fig. 3: OZD Profi G12DE ATEX 1 with location of cable entries and grounding screw

15

2 Introduction

OZD Profi G12D... ATEX 1 V. 03 07/2014

A RS 485 bus segment as per PROFIBUS standard EN
50170 can be connected to the electrical channel.

The optical channels (CH2 and 3) are designed as optical
BFOC/2.5 (ST®) sockets.
For types OZD Profi … DK … and OZD Profi … DE …the
fibre optics are led outwards via the PG cable glands.
A slotted seal enables the installation of fibre optic
cables with an add-on connector.

Voltage supply

Operating voltage supply is through the 24 V d.c. volt­age. A redundant power feed is available for increasing
the operational safety.

The operating voltage supply is placed on 3 terminals of
the terminal block. For types OZD Profi … DK … and
OZD Profi … DE … with connection cables, these are led
outwards via PG cable glands.

The operating voltage connections are below eachother
and are galvanically separated from the remaining
electrical connections.

Signalling contact

Various interferences of the repeater can be signaled
through a signalling contact (relays with potential-free
contacts) .

The signalling contact is placed on 3 terminals of the ter­minal block. For types OZD Profi … DK … and OZD Profi
… DE … with connection cables are led outwards via PG
cable glands.

The signalling contact connections are below each other
and galvanically separated from the remaining electrical
connections.

LEDs

Four multi-coloured LEDs signalise the current operating
status and possible malfunctions.

Configuration

The device is configured with eight easily accessible
switches.

Fibre optics

Use of fibre optics allows very large ranges and ensure
optimum protection from EMC influences not only on the
transmission paths but also due to electrical isolation on
the repeater itself.

Transmission speed

The PROFIBUS Fiberoptic Repeater
OZD Profi G12D… ATEX 1 supports data rates of

9.6 kbit/s to 12 MBit/s NRZ.

Network extension

Permissible network extension for the line, ring or star
topology is up to 3000 m.

Redundance

Very high transmission security is ensured by the redun­dant ring.
Operational safety can be further increased by redundant
operating voltage supply.

Measurement output

A measurement output, on which the optical input power
can be determined with a standard voltmeter, is available
for every optical channel. For this, a hot work permit is
required in the ex-area.

Standards / Directives

OZD Profi G12D… ATEX 1 comply with the standard EN
50170 as well as the technical guideline “optical trans­mission technology for PROFIBUS” issued by the
PROFIBUS user organisation PNO .

2 Introduction

16

OZD Profi G12D... ATEX 1 V. 03 07/2014

3.1 Functions independent of the mode of operation

17

3 General functions

OZD Profi G12D... ATEX 1 V. 03 07/2014

3 General functions

Transmission speed

OZD Profi G12D... ATEX 1 supports all transmission
speeds (transmission rates) defined in EN 50170:

9.6 kBit/s, 19.2 kBit/s, 45.45 kBit/s, 93.75 kBit/s,

187.5 kBit/s, 500 kBit/s, 1.5 MBit/s, 3 MBit/s,
6 MBit/s and 12 MBit/s.

Transmission speed is set automatically once OZD Profi
G12D... ATEX 1 telegrams are received. Adjustment or
conversion depends upon the transmission speed and
the set operating mode and may last up to several sec­onds for each OZD Profi G12D...ATEX 1 .

If the transmission speed is not recog nised, outputs are
blocked for all channels. If the trans mission speed
changes during operation, the repeater recognises it and
reconfigures the same.
Brief transmission faults may occur during the
changeover time.

Signal regeneration

The repeater regenerates the signal form and amplitude
of the received data. It is thus possible to cascade up to
122 OZD Profi G12D... ATEX 1 (limited by the address
space for PROFIBUS networks).

Startup aid

During the installation, at least one active bus station is
required for checking the fibre optic connections. This
bus station is used as a source for telegrams. After
switching on, the OZD Profi G12D... ATEX 1 behave pas­sively. You can recognise the transmission speed from
the telegrams transmitted by the bus station. Optical
startup aid is possible with the help of flashing channel
LED.

Operating mode for the

- OZD Profi G12DU ATEX 1 with DIP switches is set on
the upper side of the repeater

- for OZD Profi G12DK ATEX 1 and OZD Profi G12DE
ATEX 1 after opening the protective housing with DIP
switches on the upper side of the repeater

.
Adjustment help is on the label besides the DIP switches.

3.1 Functions independent of the mode of operation

3.2 Functions dependent on the mode of operation

Segment monitoring of the RS-485 channel

If the operating mode “electrical channel with segment
monitoring” is set, every receiver monitors each RS 485
bus segment connected to
it for erroneous telegrams or constant network allocation.
If erroneous telegrams arrive at the receiver or allocations
exceed the maximum permissible transmitting time,

transfer of received signals is blocked,
till error-free telegrams are received again or no signal
was received for a period of one second.

3 General functions 3.2 Functions dependent on the mode of operation

18

OZD Profi G12D... ATEX 1 V. 03 07/2014

In the operating mode “electrical channel without seg­ment monitoring, connected RS 485 bus segments are
not monitored. Interferences of the electrical segment
affect the entire network.

Kindly observe the installation information in chapter 5.6
“Connect electrical bus cables” on page 37.

Following functions are available only for the optical
channels. Activation of the functions is independent of
the set operating mode.
Kindly refer to the following chapters for detailed infor­mation.

Line monitoring via Echo

The repeater enables active monitoring of the connected
optical paths for interruptions of the fibre optic cable
through the “send echo”, “monitor echo” and “suppress
echo” functions.

Send echo

If the repeater receives a telegram through any channel,
the same is send to all other channels. If the receiver is
an optical channel, the repeater sends the telegram back
to the related optical transmitter.

Monitor echo

If the repeater transmits a telegram - no echo! – to an
optical channel, the Repeater expects an echo. If echo
does not arrive after a specified time, echo monit oring
error is signalled with a red LED belonging to a channel.

Suppress echo

The rele vant receiver is separated from he remaining
channels from the start of transmission of the telegram
up to complete reception of the echo.

Segmentation

If an echo monitoring error or distortion occurs on an
optical channel, the repeater assumes a line fault and
blocks this channel for user data. The connected fieldbus
subnetwork is thus segmented (detached). Due to this
segmentation, the repeater on the opposite side of fibre
optic is also segmented.
Both repeaters connected to the segmented fieldbus
subnetwork transmit test telegrams to the segmented
channel. Both repeaters can check the status of the field­bus subnetwork through these test telegrams to be
received regularly.
Segmentation is automatically cancelled as soon as both
the repeaters detect the segmented fieldbus subnetwork
with the help of test telegrams.

If all active bus stations in a previously active network are
switched off, the repeaters are segmented in cycles for
checking the fibre optic paths for neighbouring modules.
In the absence of telegram traffic but intact fibre optic
paths, the channel LEDs of the optical channels blink yel­low in cycles.

4.1 Line topology

19

4 Network topologies

OZD Profi G12D... ATEX 1 V. 03 07/2014

4 Network topologies

Following network topologies are possible with OZD
Profi G12D... ATEX 1:

 Point to point connection
 Line topology
 Star topology
 Redundant optical ring

Even combinations from these basic types are possible.
For building up fibre optic paths of these network
topologies lines with two optical fibres are used.

If a fault occurs – e. g. breakage of fibre optic line – high
failure safety of the fieldbus network is required,
availability of the network is increased by a redundant
network configuration.

Kindly note:

 Individual terminal equipments or complete

PROFIBUS segments with max. 31 stations can be
connected to OZD Profi G12D...ATEX 1.

 Lay only fibre optic cables in severe EMC-risk

areas in order to rule out EMC influences in the
entire network.

 Optical channels, which are connected to each

other via fibre optic cable, must have the same
operating mode set.

4.1 Line topology

CH 2

SE

CH 3

SE

CH 2

SE

CH 3

SE

CH 2

SE

CH 3

SE

OZD Profi G12D...

ATEX 1

OZD Profi G12D...

ATEX 1

CH 1

CH 1

Terminal equipment/

bus segment

OZD Profi G12D...

ATEX 1

CH 1

Terminal equipment/

bus segment

Terminal equipment/

bus segment

CH 2

SE

CH 3

SE

OZD Profi G12D...

ATEX 1

CH 1

Terminal equipment/

bus segment

RS 485-type bus

Optical fibre

Fig. 4: Network structure in the optical line topology

4 Network topologies 4.1 Line topology

20

OZD Profi G12D... ATEX 1 V. 03 07/2014

4.1.1 Line topology with fibre optic path
monitoring and segmentation

Use this operating mode preferably if a faulty fibre optic
segment should be separated from the remaining net­work.

 Monitoring mechanisms:

Transmit echo: yes
Monitor echo: yes
Suppress echo: yes
Monitor: yes
Segmentation: yes

In this operating mode, individual fibre optic paths are
monitored by both the modules connected to it.

If a repeater breaks down or an optical fibre breaks or
there is a fault in the optical transmission path , fibre optic
path between both OZD Profi G12D... ATEX 1 is broken
(segmented).
The PROFIBUS network disintegrates into two subnet­works, which each in itself - remains operational.
Fault is signalled by switching the channel LED to red
and activation of the signalling contact of both OZD Profi

Line topology can be implemented with and without fibre
optic path monitoring. If both operating modes are used
within a fibre optic line, the operating mode “line topolo­gy without fibre optic path monitoring” determines the
availability of this fibre optic line. In homogenous OZD
Profi networks, it is recommended to use the fibre optic
path monitoring (factory setting).

Kindly note that following basic conditions must be com­plied with for a proper operation during network
configuration:

 Parameters MIN T

SDR

specified in the PROFIBUS
standard EN 50170 must be set at value >_11 for
all terminal equipment. This is generally the case,
however, it must be checked at occurrence of per­manent communication interferences.

 When configuring your network, select possibly

low bus station addresses, in order to keep poten­tial master time-outs small.

For changing the settings, kindly refer to the manufactur­ers documentation related to connected terminal equip­ment.

4.1.2 Line topology without fibre optic
path monitoring

Use this operating mode, if you connect a OZD Profi
G12D... ATEX 1 with another fibre optic network com ­ponent as per PROFIBUS directive (optical/electrical
con verter), which does not transmit a telegram echo and
does not expect or take any telegram echo.

G12D... connected to the faulty fibre optic path. Seg­mentation is automatically can celled as soon as both the
repeaters detect the uninterrupted segmented fieldbus
subnetwork with the help of test telegrams.

Note that in case of fault, two logical token rings are
formed for networks with several active bus stations.
Each interconnection of the two sub networks may thus
lead to temporary network failure due to double token or
telegram collisions.

Note:

If a line repeater with two optical channels is used at the
beginning or the end, the non-allocated optical channel
must be switched to the operating mode “line without
fibre optic path monitoring”, so that it does not lead to a
fibre breakage signalling.
Note that optical channels, which are not connected
must be always protected with protective caps from
external light incidence and dirt.

 Monitoring mechanisms:

Transmit echo: no
Monitor echo: no
Suppress echo: no
Monitor: no
Segmentation: no

Individual fibre optic paths are not monitored in this
operating mode.

4.2 Star topology

21

4 Network topologies

OZD Profi G12D... ATEX 1 V. 03 07/2014

4.2 Star topology

Fig. 5: Network structure in the optical star topology

CH 2

SE

CH 3

SE

CH 2

SE

CH 3

SE

CH 2

SE

CH 2

SE

CH 2

SE

CH 2

SE

CH 2

SE

CH 2

SE

CH 2

SE

CH 2

SE

CH 2

SE

CH 2

SE

Terminal equipment/

bus segment

Terminal equipment/

bus segment

Terminal equipment/

bus segment

Terminal equipment/

bus segment

Terminal equipment/

bus segment

OZD Profi G12D...

ATEX 1

CH 1

CH 2

SE

CH 3

SE

OZD Profi G12D...

ATEX 1

CH 1

CH 2

SE

CH 3

SE

OZD Profi G12D...

ATEX 1

CH 1

OZD Profi G12D...

ATEX 1

CH 1

OZD Profi G12D...

ATEX 1

CH 1

OZD Profi G12D...

ATEX 1

CH 1

OZD Profi G12D...

ATEX 1

CH 1

OZD Profi G12D...

ATEX 1

CH 1

OZD Profi G12D...

ATEX 1

CH 1

Electrical star segment

S0 = 1 S0 = 1 S0 = 1 S0 = 1

RS 485-type bus

Optical fibre

Several repeaters are combined to form an active
PROFIBUS star coupler. Other repeaters are connected
to this via double-wire fibre optic lines.
The repeaters of the star coupler are connected below
each through electrical channels (electrical star segment).

Kindly note:

 For all OZD Profi G12D... ATEX 1, which are con-

nected to the electrical star segment, CH1 must
switched to “Monitor off“ mode (S0 = 1). Segmen­tation function of RS 485 channel is thus switched
off for this OZD Profi G12D... ATEX 1, for high
availability of the electric star.

4 Network topologies 4.2 Star topology

22

OZD Profi G12D... ATEX 1 V. 03 07/2014

Fig. 6: Network structure in the redundant optical ring topology

RS 485-type bus

Optical fibre

Terminal equipment/

bus segment

OZD Profi G12D...

ATEX 1

CH 1

CH 3

SE

CH 2

SE

Terminal equipment/

bus segment

OZD Profi G12D...

ATEX 1

CH 1

CH 3

SE

CH 2

SE

Terminal equipment/

bus segment

OZD Profi G12D...

ATEX 1

CH 1

CH 3

SE

CH 2

SE

Terminal equipment/

bus segment

OZD Profi G12D...

ATEX 1

CH 1

CH 3

SE

CH 2

SE

4.3 Redundant optical ring

 Ensure that the electrical star segment is carefully

wired. Keep its ex tension as short as possible, in
order to prevent interferences in the electrical star
segment and from there in the entire network. You
may attain this by placing the OZD Profi G12D...
ATEX 1 in the star segment directly adjacent to
each other on a top-hat rail.

 Energise the terminating resistors on both the ends

of the electrical star segments (see chapter 5.4.2,
“connection/disconnection of internal terminating
resistors”, page 35).

 Do not possibly connect any bus station to the

electric star segment.

For enabled path monitoring on the optical channels,
monitoring of fibre optic paths is provided by the respec­tively connected OZD Profi G12D... ATEX 1.

Note:

Non-allocated optical channels, which example are pro­vided for subsequent extensions, lead to fibre optic line
signalling during enabled path monitoring.
You can avoid this error message, wherein, you switch
the non-allocated channels to the operating mode “line
without fibre optic path monitoring”.
Kindly note that optical channels, which are not connect­ed must be always protected with protection caps
against external light incidence and dirt.

4.3 Redundant optical ring

23

4 Network topologies

OZD Profi G12D... ATEX 1 V. 03 07/2014

This network topology presents a special form of line ­topo logy. High operational safety of the network can be
attained by “closing” the optical line.

 Monitoring mechanisms:

Transmit echo: yes
Monitor echo: yes
Suppress echo: yes
Segmentation: yes

Interruptions of one or both optical fibres between two
repeaters is recognised from the OZD Profi G12D...
ATEX 1 and the ring becomes an optical line.

If the repeater breaks down, only terminal equipment or
the RS 485 segment connected to this repeaterare uncou­pled from the ring. The rest of the network itself remains
functional as a line. Error reporting is done by the LED of
both the OZD Profi G12D... ATEX 1 connected to the
faulty fibre optic path and through its signalling contact.
Segmentation is automatically cancelled as soon as both
the repeaters recognise the uninterrupted segmented
fieldbus subnetwork with the help of test telegrams. The
line again closes to form a ring.

Kindly note:

Following basic conditions must be complied with for
proper operation:

 Operating mode “redundant optical ring” must be

set on both the optical channels of all OZD Profi
G12D... ATEX 1.

 All repeaters in the course of ring must be con-

nected to each other via fibre optic lines.
There should be no RS 485 bus cable during the
course of a ring.

 Parameter MIN T

SDR

described in the PROFIBUS
standard EN 50170 must be set at value < 11 for
all terminal equipment. This is generally the case,
however, it must be checked at occurrence of
substantial communication interferences.

 When configuring your network, select possibly

low bus station addresses, in order to keep poten­tial master time-outs small.

 If there is redundancy (e.g. line breakage), it results

into a switching time, during which correct data trans­mission may not be possible. For ensuring shock-free
overbridging of the application, it is recommended to
set the number of repetitions (retry) of the telegram at
minimum 3 for the PROFIBUS master.
For ensuring shock-free switching back of the optical
line to the optical ring after eliminating the fault, there
must be no telegram at this point in the network. This
state occurs if a master addresses a device, whose
address is configured but is not actually available. The
master tries to address this device in cycle and waits
for a response (“GAP query”) maximum up to expira­tion of the configured slot time. OZD Profi G12D...
ATEX 1 recognises this state and closes the optical
line in the middle of this query sequence to the optical
ring.
Two configuration requirements are produced for the
redundant optical ring:
– The value of parameters HSA (Highest Station

Address) must be set such for all terminal equip­ment, that between the bus address 0 and the value
HSA at least one address in the network is not allo­cated by a bus station, there is at least one address
gap. You can get this address gap simply by setting
the value of the parameter HSA by at least one high­er than the highest station bus address occurring in
the network.
Attention: If this requirement is not and/or cannot
be fulfilled any longer, the optical line cannot be
closed for a redundant optical ring after a segmen­tation.
The fault message (LED and signal contact) of the
two concerned OZD Profi G12D... ATEX 1 is not
taken back after rectification of the fault.

– The slot time must be set at double the value than

for a non-redundant network. Other information is in
chapter 6, “configuration”, page 51.
Kindly refer to the manufacturers documentation for
change in settings of the terminal equipment or con­figuration software.

4 Network topologies 4.4 Combination with network topologies of ex-zone 2, 22

24

OZD Profi G12D... ATEX 1 V. 03 07/2014

For transitions between the ex-zones 1, 21 and 2, 22 an
optical cable for ex-zone 1, 21 a repeater OZD Profi
G12D... ATEX 1 must be used in the ex-zone 1 ,21. Other
network segments outside the zone 1, 21 can be imple­mented through its second optical interface with
repeaters OZD Profi 12M G11 (PRO), OZD Profi 12M G12
(PRO) or OZD Profi 12M G12 EEC (PRO. All topologies
as per chapter 3.1, 3.2 and 3.3 are applied in the individ­ual networks.

4.4 Combination with network topologies of ex-zone 2, 22

RS 485-type bus

Optical fibre

Terminal equipment/

bus segment

OZD Profi 12M ...

PRO

CH 1

CH 3

SE

CH 2

SE

Terminal equipment/

bus segment

OZD Profi G12D...

ATEX 1

CH 1

CH 3

SE

CH 2

SE

Terminal equipment/

bus segment

OZD Profi G12D...

ATEX 1

CH 1

CH 3

SE

CH 2

SE

Terminal equipment/

bus segment

OZD Profi G12D...

ATEX 1

CH 1

CH 3

SE

CH 2

SE

OZD Profi G12D...

ATEX 1

OZD Profi G12D...

ATEX 1

OZD Profi G12D...

ATEX 1

OZD Profi G12D...

ATEX 1

Building B
Ex-Zone 2, 22
OZD Profi G12D... ATEX 1 and
OZD Profi 12M ... PRO

Building A
Ex-Zone 1, 21
OZD Profi G12D... ATEX 1

RS 485-type bus

Optical fibre

Fig. 7: Example for a transition from the ex-zone 1, 21 to ex-zone 2, 22

5.1 Design guidelines

25

5 Startup

OZD Profi G12D... ATEX 1 V. 03 07/2014

5 Startup

5.1.2 Assembly in zone 2

OZD Profi G12DU ATEX 1 devices shall be installed into
an enclosure that complies with one of
the following types of protection as a minimum according
to the respective field of application :
"lncreased Safety", "Flameproof Enclosure" or "Protec­tion by Enclosure".
OZD Profi G12DK/DE ATEX 1 devices may be installed in
gas-ex in zone 2 or for dust-ex in zone 22.

IP5* must be complied with for non-conductive dust and

IP6* for conductive dust.

The housing cover may be opened for servicing during
ongoing operation.

All terminals are covered.
The cover may be removed in zone 2 and also in the safe
area for servicing. The terminals are then accessible.
Non-used inlet openings are to be sealed securely with
certified sealing plugs in order to comply with the IP pro­tection class. Likewise, seal inserts appropriate for the
respective cable diameter must be used.
Excessive force on the glands may endanger the
protection class.

5.1.3 Assembly in safe area

The device types can be installed outside the ex-area.
The housing cover may be opened for servicing during
ongoing operation.
Terminals in increased safety are covered.
The cover may be removed any time during assembly in
safe area.

5.1.1 Assembly in zone 1

OZD Profi G12DU ATEX 1 devices shall be installed into
an enclosure that complies with one of
the following types of protection as a minimum accord­ing to the respective field of application :
"lncreased Safety", "Flameproof Enclosure" or "Protec­tion by Enclosure".
OZD Profi G12DK/DE ATEX 1 devices may be installed in
gas-ex in zone 1 or for dust-ex in zone 21.

The housing cover may be opened in zone 1 for servicing
during ongoing operation.
The housing cover for dust-ex in zone 21 is opened only
in currentless state or with hot work permit.

Terminals in increased safety are covered.
The cover may be removed only if there is no explosion
hazard (hot work permit) or circuits are switched to zero
potential beforehand.
Non-used inlet openings are to be sealed securely with
certified sealing plugs in order to comply with the IP pro­tection class. Likewise, seal inserts appropriate for the
respective cable diameter must be used.
Excessive force on the glands may endanger the protec­tion class.

5.1 Design guidelines

5 Startup 5.1 Design guidelines

26

OZD Profi G12D... ATEX 1 V. 03 07/2014

5.1.6 Spatial arrangement of devices and
cables



Reduce interference by distance.
Likewise a simple as well as effective alternative for
reducing interferences is in the spatial separation of
interfering and susceptible devices and cable. Inducti­ve and capacitive interferences decrease in the qua­drate of the distance of the involved elements. That
means, doubling the distance reduces the effects of
the interference by factor 4. If layout considerations
right in the planning phase of a building or a control
cabinet can generally be very cost-effective.



Standard recommendations for spatial arrangement of
devices and cables
Recommendations for spatial arrangement of de vices
and cables with the aim of ensuring a possibly low
mutual inter ference, includes EN 50174–2.

5.1.5 Suppression of switched inductors



Switch switched inductors with suppressors
Switching of inductors e.g in relays and fans causes
interference voltages, the amount of which is much
more than the switched operating voltage. These
interference voltages may affect electronic devices.
The interference voltages of inductors must be limited
to the emission source by switching with suppressors
(diodes or RC wiring). Use only interference suppres­sors, which are intended for the relays or fans used by
you.



Cabinet lighting
Use bulbs for cabinet lighting, e. g. LINESTRA lamps.
Avoid using fluorescent lamps as these lamps create
interference fields. If fluorescent lamps cannot be
used, measures shown in figure 8 must be taken.

Shield grid
over the lamp

Shielded cable

metal-encased
Switch

Mains filter or
shielded mains cable

Fig. 8: Measures against suppression of fluorescent lamps in

the cabinet

5.1.4 Electromagnetic Compatibility (EMC)

The electromagnetic compatibility (EMC) comprises all
queries of the electrical, magnetic and electro magnetic
spinning and spin-off effects.
for avoiding electromagnetic interferences in electrical
systems , these effects must be restricted

to a minimum. Limitation measures mainly in clude
design and pro per connection of bus cables and the
supp ression of switched inductors.

z

Warning!

Interference suppressor must comply with the
ATEX directives in the explosive hazard area.

5.1 Design guidelines

27

5 Startup

OZD Profi G12D... ATEX 1 V. 03 07/2014



Handling sheaths for the bus cables
Follow the following measures when sheathing the
cables:

- Use universally sheathed cables. The sheaths of
these cables must feature sufficient coverage den­sity of the sheath , for complying with the legal
requirements for interference emissions and inter­ference immunity.

- Always place the sheaths on both sides of the bus
cables. You can fulfill the legal requirements for inter-

ference emission and interference immunity of your
device (CE sign) only by connecting both-sided con­nection of the sheath.

- Remove the insulation of the sheath of the bus cable
without interruption and place it on a potential
equalisation bar. This in turn must be connected via
a short cable with the functional earth of

OZD Profi G12D… ATEX 1.

Data transmission line

Potential equalisation

Potential equalisation

Switch panel 1

Switch panel 2

Fig. 9: Laying a potential equalisation cable parallel to the bus cable

Note:

For potential differences between the grounding points
an unauthorised high equalising current may flow
through the sheath connected on both sides. Do not
in any case separate the sheath of the bus cable for
rectifying the fault!
Following solution is permitted:
Lay an additional potential equalisation cable parallel
to the bus cable, which accepts the sheath current.
For this note “PROFIBUS, technical direc tive, design
guidelines PROFIBUS-DP/FMS” (issuer: PROFIBUS
Nutzer organisation e.V.).

5 Startup 5.1 Design guidelines

28

OZD Profi G12D... ATEX 1 V. 03 07/2014

5.1.7 Execution of sheath connections

Kindly consider following points when laying the cable
sheaths:



Fix braid cable sheath with metal cable clamps.



The clamps must extensively enclose the sheath and
have a good contact (see Figure 10).



Contact the cables only through the copper braid
sheath and not through the aluminium foil sheath. The
foil sheath is placed on a plastic foil for increasing the
tensile strength and thus non-conductive!



All cable sheaths leading from outside to the protecti­ve housing must be intercepted at the entry point of
the protective housing and extensively contacted with
the earth of the protective housing.



When removing the cable sheaths ensure that the
braid sheath of the cables is not damaged. Tinned or
galvanically stabilised surfaces are ideal for a good
mutual contact of grounding elements. For tinned sur­faces, the required contacts must be ensured with a
suitable gland. Painted surfaces at the point of
contact are not suitable.



Sheath catching/contacts must not be used as strain
relief. Contact to the shielding bus may deteriorate or
tear.

Fig. 10: Fixing sheathed cables with cable clamps and hose clip

(schematic presentation)

5.2 Startup process

29

5 Startup

OZD Profi G12D... ATEX 1 V. 03 07/2014

5.2 Startup process

Startup of PROFIBUS Fiberoptic Repeater
OZD Profi G12D… ATEX 1 is done in following steps:



Assemble/disassemble repeater



Setting the operating mode, connecting/disconnec­ting the terminating resistors



Connect optical bus cables



Connect electrical bus cables



Connect functional earth



Connect signal contact cables (optional)



Define reception level of optical channels



Connect operating voltage supply



Monitor LED indicators

5 Startup 5.3 Assemble/disassemble repeater

30

OZD Profi G12D... ATEX 1 V. 03 07/2014

5.3.1 Assembly of OZD Profi G12DU ATEX 1

The Fiberoptic Repeater OZD Profi G12DU ATEX 1 can be
assembled on

- a 35 mm top-hat rail as per IEC 60715: 1981 + A1: 1995
or

- a flat surface (pre-assembled top-hat rail must be
unscrewed beforehand).

Assembly on top-hat rail



Select the assembly location such that climatic limit val­ues specified in the technical data are maintained.



Consider adequate space for the connection of bus and
supply cables.



For easy installation of the optical fibre connect this to
the repeater before the assembly.



Assemble the repeater on the top-hat rail.
For this, mount the top latch of the repeater on the top­hat rail and press the lower side

- as shown in figure 11 - on the rail, till the latch
engages.

Note:

You may disassemble the repeater from the top-hat rail,
wherein, you unlock the snap device as shown in figure 12
with a screwdriver .

5.3 Assemble/disassemble repeater

click !

Fig. 11: Assembling the repeater on a top-hat rail

Fig. 12: Disassembling the repeater from a top-hat rail

5.3 Assemble/disassemble repeater

31

5 Startup

OZD Profi G12D... ATEX 1 V. 03 07/2014

Assembly on an even base

The repeaters are provided with three mounting brack­ets. These enable assembly on an even base - e.g. on
the assembly plate of a control cabinet.
It can be installed horizontally or vertically.



Select the assembly location such that climatic limit
values specified in the technical data are maintained.



Unscrew the pre-assembled top-hat rail adapter.



Drill three holes in the assembly plate as per the
drilling dimensions in figure 14.



Screw the repeater on the base.

Screw Spacer sleeve Washer

Nut

Screw Washer

Nut

Fig. 13: Assembling the repeater on an assembly plate

S0S1 S2 S3 S4S5 S6 S7

System

CH1

CH2

CH3

CH3

CH2

943881321000000001

Ser.-No.: 0123456789

80 30

70 70

30

115

Fig. 14: Drilling dimension OZD Profi G12DU ATEX 1

5 Startup 5.3 Assemble/disassemble repeater

32

OZD Profi G12D... ATEX 1 V. 03 07/2014

5.3.2 Assembly of OZD Profi G12DK ATEX 1

The repeater is provided with four semi-circular cutouts at
the bottom. These enable assembly on an even base.
It can be installed horizontally or vertically.



Select the assembly location such that climatic limit val­ues specified in the technical data are maintained.



Drill four holes in the assembly plate as per the drilling
dimensions in figure 16.



Unscrew the housing cover.



Remove the four holders for the cover screws.



Screw the repeater on the base.



Reinstall the four holders for the cover screws.



If required, screw on the housing cover again.

141

152

Fig. 16: Drilling dimension OZD Profi G12DK ATEX 1

Screw

Washer

Fig. 15: Assembling the repeater on an even base

5.3 Assemble/disassemble repeater

33

5 Startup

OZD Profi G12D... ATEX 1 V. 03 07/2014

5.3.3 Assembly OZD Profi G12DE ATEX 1

The repeater is provided with two brackets at the bot­tom. These enable assembly on an even base.
It can be installed horizontally or vertically.



Select the assembly location such that climatic limit
values specified in the technical data are maintained.



Drill two holes in the assembly plate as per the drilling
dimensions in figure 18.



Screw the repeater on the base.

215

9797

Fig. 18: Drilling dimension OZD Profi G12DE ATEX 1

Screw

Washer

Fig. 17: Assembling the repeater on an even base

5 Startup 5.4 Setting the mode, connection/disconnection of terminating resistors

34

OZD Profi G12D... ATEX 1 V. 03 07/2014

5.4 Setting the mode, connection/disconnection of terminating resistors

Setting of the operating mode and the connection/dis­connection of the terminating resistors is done with the
DIP switches. These are on the front side of the OZD
Profi G12DU ATEX 1 (see figure 19).

Note:
For OZD Profi G12DK ATEX 1 and OZD Profi G12DE
ATEX 1 the DIP switches are accessible after removing
the cover.

Note:

The DIP switches S5 and S6 are without functions.

5.4.1 Setting the mode

Kindly note:

If the operating voltage for the repeater is already applied
e.g for subsequent reconfiguration, then the operating
voltage must be switched off for setting the operating
mode.

With the DIP switch S0 the operating mode of the
electrical channel CH1 is set.

With the DIP switch S1 and S2 the operating mode of
the optical channel CH2 is set.

With the DIP switch S3 and S4 the operating mode of
the optical channel CH3 is set.

With the DIP switch S7 the internal terminating resis-

tors are connected and disconnected.

5.4.1.1 Setting the operating mode of the electri-

cal channel (CH1)

Operating mode “electrical channel with segment

monitoring“

CH1 is connected in this operating
mode, if S0 is in the OFF position.

Operating mode “electrical channel without

segment moni toring“

CH1 is connected in this operating
mode, if S0 is in

the ON position.

Kindly note that the operating

mode should be set only in the star

segment of the star topology.

S0 S1 S2 S3 S4 S5 S6 S7

CH1 CH2 CH3

1234 567 8

ON
OFF

S0 S1 S2 S3 S4 S5 S6 S7

CH1 CH2 CH3

1234 567 8

ON
OFF

S0S1 S2 S3 S4 S5 S6S7

System

CH1

CH2

CH3

CH3

CH2

24V*24

V

DIBDI

A

0V0V FG FG

DOBDO

A

CH
0V

FNCFNOCH3CH

2

F

NICHT UNT ER SPANNUNG ÖFFNEN
DO NOT OPEN WH ILE ENERGISED

NE PAS OUVRIR S OUS TENSION

NON APRIR E SOTTO TENSIONE

NÃO ABRIR QU ANDO ENERGIZA DO

943881321000000001

Ser. No.: 0123456789

DIL switch for
operating mode and
internal terminating
resistors

Fig. 19: Location of the DIP switch for OZD Profi G12DU ATEX

1 (OZD Profi ...DK ... and OZD Profi ... DE ... :
after opening the housing)

5.4 Setting the mode, connection/disconnection of terminating resistors

35

5 Startup

OZD Profi G12D... ATEX 1 V. 03 07/2014

5.4.1.2 Setting the operating mode of the optical
channels (CH2, CH3)

Operating mode can be set separately for each optical
channel. Combinations of the operating modes
“Line with and line without fibre optic path monitoring”
are possible.
Kindly note that operating mode of both the optical chan­nels connected to each other via the fibre optic cable
must be always set similar!
The operating mode “redundant optical ring” must be
always set on both the optical channels.

Operating mode “Line with fibre optic path moni-

toring and segmentation“

CH3 is connected in this operating
mo de, if S3 and S4
are in the OFF position.
CH2 is connected in this operating
mode, if S1 and S2 are in the OFF
position.

Operating mode “Line without fibre optic path

moni toring“

CH3 is connected in this operating
mode, if S3 is in the ON position and
S4 is in OFF position.
CH2 is connected in this operating
mode, if S1 is in the ON position and
S2 is in the OFF position.

S0 S1 S2 S3 S4 S5 S6 S7

CH1 CH2 CH3

1234 567 8

ON
OFF

S0 S1 S2 S3 S4 S5 S6 S7

CH1 CH2 CH3

1234 567 8

ON
OFF

Operating mode “redundant optical ring“

CH3 is connected in this operating
mode, if S3 and S4 are in the ON
position.
CH2 is connected in this operating
mode, if S1 and S2 are in the ON
position.

Kindly note that this operating mode must be always set
on both optical channels of a module.

S0 S1 S2 S3 S4 S5 S6 S7

CH1 CH2 CH3

1234 567 8

ON
OFF

5.4.2 Connection/disconnection of

internal terminating resistors

If the repeater is at the beginning or end of the bus seg­ment, the internal terminating resistors must be set.

Note: The repeater must not be disconnected when con­necting/disconnecting the terminating resistors.

Internal terminating resistors are connected

if S7 is in the OFF position.

Internal terminating resistors are disconnected

if S7 is in the ON position.

S0 S1 S2 S3 S4 S5 S6 S7

CH1 CH2 CH3

1234 567 8

ON
OFF

S0 S1 S2 S3 S4 S5 S6 S7

CH1 CH2 CH3

1234 567 8

ON
OFF

5 Startup 5.5 Connect optical bus cables

36

OZD Profi G12D... ATEX 1 V. 03 07/2014

The repeaters are equipped with two optical ports.



Connect the individual repeaters via a duplex fibre
optic cable with BFOC/2.5 (ST®) plug-in connectors.



Note the maximum length of the fibre optic cable and
the possible fibre types specified in the technical
data.



Always ensure that an optical input a and an optical
output J are conn ected to each other (cross connec­tion).
Associated BFOC sockets of both the ports are iden­tified on the lateral adhesive label.



Lead the fibre optic cable for OZD Profi G12DK ATEX 1
and OZD Profi G12DE ATEX 1 as shown in figure 20
and figure 21 via cable entries (PG glands).

Note: The PG-glands have slotted seals. The fibre
optic connector must not be lead through the seal,
however, you can bend open the seal and lay it
around the fibre optic cable.



Ensure adequate stress relief
of fibre optic cable and note its minimum bending
radii.



Do not close the non-allocated BFOC sockets with
the provided protective caps. Incident am bient light
may interfere with the network, particularly at high
ambient light.
Penetrating dust may make the optical components
unusable.

S0S1 S2 S3 S4S5 S6 S7

System

CH1

CH2

CH3

CH3

CH2

24V*24

V

DIBDI

A

0V0V FG FG

DOBDO

A

CH
0V

FNCFNOCH3CH

2

F

NICHT UNT ER SPANNUNG ÖFFNEN
DO NOT OPEN WH ILE ENERGISED

NE PAS OUVRIR S OUS TENSION

NON APRIRE SOTTO TENSIONE

NÃO ABRIR QUANDO ENERGIZADO

943881321000000001

Ser.-No.: 0123456789

Fig. 20: Cable routing of the fibre optic cable for

OZD Profi G12DK ATEX 1

S0S1 S2 S3 S4S5 S6 S7

System

CH1

CH2

CH3

CH3

CH2

24V*24

V

DIBDI

A

0V0V FG FG

DOBDO

A

CH
0V

FNCF

NOCH3CH2

F

NICHT UNTER SPANNUNG ÖFFNEN
DO NOT OPEN WH ILE ENERGISED

NE PAS OUVRIR S OUS TENSION

NON APRIRE SOTTO TENSIONE

NÃO ABRIR QUANDO ENERGIZADO

943881321000000001

Ser.-No.: 0123456789

Fig. 21: Cable routing of the fibre optic cable for

OZD Profi G12DK ATEX 1

5.5 Connect optical bus cables

5.6 Connect electrical bus cables

37

5 Startup

OZD Profi G12D... ATEX 1 V. 03 07/2014

5.6 Connect electrical bus cables

z

Warning!

Work on ex-e cables in zone 1 is permitted only
with hot work permit or in the current-free state.

The repeaters are equipped with an electrical port with
RS 485 level.

The RS 485 bus cables are designed in the protection
class ex-e EN 60079-7:2007. They are placed on the
front side of the OZD Profi G12DU ATEX 1 on four sepa­rate single terminals (DI A, DI B, DO A and DO B). The
terminals have a valid type approval certificate. The con­nections are in duplicate in order to loop through the bus
cable through the device.

Note: The terminals are accessible for OZD Profi … DK
… and OZD Profi … DE … after opening the protective
housing.

Note: If the terminating resistors are not connected, data
cable is looped through without signal regeneration
through the device.

The RS 485 bus cables RxD/TxD–N and RxD/TxD–P are
galvanically separated (functional separation) vis-a-vis
the 24 V supply voltage within the SELV limits.

The RS 485 interface is galvanically connected to the
potential equalisaton connection.



Connect the RS 485 bus cable and its cable shield to
the terminal block, see fig 22.

Note:

Ensure that bus segments connected to the 485
inter face are terminated on both the ends.



Use only shielded pair cables as RS 485 bus cable



Ensure adequate stress relief of RS 485 bus cable
and consider its minimum bending radii.



Remove RS 485 bus cable from OZD Profi, if no
device is connected on the other cable-end or the
same has been switched currentless.
The open cable otherwise works as an antennae and
can couple interferences.



Follow the following sequence when connecting a RS
485 bus cable to the OZD Profi G12D… ATEX 1 for an
active network, in order to minimise the disturbances :
attach 1. RS 485 bus connector to the device to be
connected (e.g. on the programming unit) and screw
on tightly.

2. Install RS 485 bus cables on OZD Profi G12D…
ATEX 1 .
Proceed in the reverse sequence when removing a
repeater from the network.

S0S1 S2 S3 S4S5 S6 S7

System

CH1

CH2

CH3

CH3

CH2

24V*24

V

DIBDI

A

0V0V FG FG

DOBDO

A

CH
0V

FNCFNOCH3CH

2

F

943881321000000001

Ser. No.: 0123456789

Shield

Incoming

Bus line

Outgoing
Bus line

Shield

Fig. 22: Terminal block - connections of the electrical bus

cables for OZD Profi G12DU ATEX 1
(OZD Profi ...DK ... and OZD Profi ... DE ... : after
opening the housing)

5 Startup 5.6 Connect electrical bus cables

38

OZD Profi G12D... ATEX 1 V. 03 07/2014

z

Warning!

OZD Profi G12DU ATEX 1: The sheath of the data
cable must be connected in the control cabinet
together with the functional earth connection to a
potential equalisation bar.
OZD Profi … DK … and OZD Profi … DE … :
The connection for the functional earth on the
housing must be connected to the potential equal­isation bar.
The potential equalisation bars of the control cabi­nets, which are mutually connected via an electri­cal RS 485, must be connected mutually at low­resistance.

z

Warning!

Do not connect any RS 485 bus cables, which are
laid wholly or partially outside
the building. Otherwise, lightning strikes in the
area may destroy the repeater.
Establish the bus connections, leave the build ing
with fibre optic cable!

z

Warning!

There is no galvanic separation between the bus
cables and the functional earth connection.
Hence follow the follow ing safety infor mation:

Do not connect the repeater via bus cables with
system parts, having a different earth potential.
The potential differences may lead to destruction
of the repeater!

S0S1 S2 S3 S4S5 S6 S7

System

CH1

CH2

CH3

CH3

CH2

24V*24

V

DIBDI

A

0V0V FG FG

DOBDO

A

CH
0V

FNCFNOCH3CH

2

F

943881321000000001

Ser.-No.: 0123456789

Fig. 23: Cable lead-through of the electrical bus cables for OZD

Profi G12DK ATEX 1
(OZD Profi ... DE ... : analog)



Lead both the RS 485 cables OZD Profi G12DK ATEX
1 and OZD Profi G12DE ATEX as shown in figure 23
through the two cable entries (PG-glands).

5.7 Connect functional earth

39

5 Startup

OZD Profi G12D... ATEX 1 V. 03 07/2014

Functional earth

S0S1 S2 S3 S4S5 S6 S7

System

CH1

CH2

CH3

CH3

CH2

24V*24

V

DIBDI

A

0V0V FG FG

DOBDO

A

CH
0V

FNCFNOCH3CH

2

F

943881321000000001

Ser. No.: 0123456789

5.7 Connect functional earth

24V*24

V

DIBDI

A

0V0V FG FG

DOBDO

A

CH
0V

FNCFNOCH3CH

2

F

Functional earth

Fig. 24: Terminal block - connection of functional earth for

OZD Profi G12DU ATEX 1

Fig. 25: Connection of the functional earth for OZD Profi G12DK

ATEX 1
(OZD Profi ... DE ... : analog)

z

Warning!

Work on ex-e cables in zone 1 is permitted only
with hot work permit or in the current-free state.

The repeaters are equipped with connection for the func­tional earth.

The functional earths are designed in the protection class
ex-e EN 60079-7:2007. It is placed on the front side of
the OZD Profi G12DU ATEX 1 on a separate single termi­nal (FG). The terminal has a valid type approval certifi­cate.

Note: For OZD Profi … DK … and OZD Profi … DE …
the cables are lead on a terminal accessible from outside
(see fig 25).



Connect the cable for the functional earth for OZD
Profi … DK …to the terminal block (see fig 24), for
OZD Profi G12DK ATEX 1 and OZD Profi G12DU
ATEX 1 (see fig 25) to the terminal accessible from
outside.



Ensure adequate stress relief of the cables and note
its minimum bending radii.

5 Startup 5.8 Connect signal contact cables (optional)

40

OZD Profi G12D... ATEX 1 V. 03 07/2014

5.8 Connect signal contact cables (optional)

z

Warning!

Work on ex-e cables in zone 1 is permitted only
with hot work permit or in the current-free state.

The repeaters are equipped with a signalling contact
connection.

The signalling contact connection is designed in the igni­tion protection ex-e EN 60079-7:2007. The connection
cables are placed on the front side of the OZD Profi
G12DU ATEX 1 on three separate single terminals (F NO,
F NC and F). The terminals have a valid type approval
certificate.

Note: The terminals are accessible for OZD Profi … DK
… and OZD Profi … DE … after opening the protective
housing.



Connect the signalling contact cable to the terminal
block, see fig 26.



Lead the signalling contact cable for OZD Profi
G12DK ATEX 1 and OZD Profi G12DE ATEX as shown
in figure 27 through the cable entries (PG-glands).



Ensure adequate stress relief of the cables and note
its minimum bending radii.

z

Warning!

Limit values of the relay contact
– maximum switching voltage:32 V
– maximum switching current: 1.0 A
– maximum switching capacity: 30 W

Voltage connected to the relay must be a safety
low voltage as per IEC 950/EN 60 950/ VDE 0805
and according to the UL/CSA approval must com­ply with the regulations of NEC, class 2.

Kindly ensure correct connection allocation of the
terminal block. Ensure adequate electrical iso lation
of the connection cables of the signalling contacts.
Faulty allocation may destroy the repeater.

Breakdowns of the network and the repeater can be sig­nalled by the signalling contact connection.

24V*24

V

DIBDI

A

0V0V FG FG

DOBDO

A

CH
0V

FNCFNOCH3CH

2

F

FAU LT

F

F

NO

F

NC

FAULT

Fig. 26: Terminal block - connection of the signalling contact

cables for OZD Profi G12DU ATEX 1 (OZD Profi ...DK ...
and OZD Profi ... DE ... : after opening the housing)

Fig. 27: Cable lead-through of the signalling contact for OZD

Profi G12DK ATEX 1
(OZD Profi ... DE ... : analog)

S0S1 S2 S3 S4 S5 S6 S7

System

CH1

CH2

CH3

CH3

CH2

24V*24

V

DIBDI

A

0V0V FG FG

DOBDO

A

CH
0V

FNCFNOCH3CH

2

F

943881321000000001

Ser.-No.: 0123456789

5.8 Connect signal contact cables (optional)

41

5 Startup

OZD Profi G12D... ATEX 1 V. 03 07/2014

z

Warning!

Work on ex-e cables in zone 1 is permitted only
with hot work permit or in the current-free state.

The repeaters are equipped with measuring points for
two analog voltage for diagnosis.

The analog voltage outputs are designed in the protecti­on class ex-e EN 60079-7:2007. They are placed on the
front side of the OZD Profi G12DU ATEX 1 on three
separate single terminals (CH 2, CH 3 and CH 0V). The
terminals have a valid type approval certificate.

Note: The terminals are accessible for OZD Profi … DK
… and OZD Profi … DE … after opening the protective
housing.

The reception level of the two optical channels CH 2 and
CH 3 can be determined with a standard volt meter on
the terminal block (see fig 27 and 28). The OZD Profi
G12D… ATEX 1 is protected against a short-circuit on
the terminals, brief interruption of data transmission is
however possible*.

With that
– the incoming optical power is documented , e.g. for
subsequent measurements (aging, dam age)
– a good/bad check can be conducted (limit value).

Further information is in appendix A.1, “Determine recep­tion level of the optical channels“ page 57.

* Measurement is done with a floating, high impedance

voltmeter.
The reference potential socket must not be connected to
the housing of the OZD Profi 12M ….

5.9 Define reception level of optical channels

24V*24

V

DIBDI

A

0V0V FG FG

DOBDO

A

CH
0V

FNCFNOCH3CH

2

F

CH 2

Fig. 28: Terminal block - reception level for CH 2 for OZD Profi

G12DU ATEX 1 (OZD Profi ...DK ... and OZD Profi ...
DE ... : after opening the housing)

24V*24

V

DIBDI

A

0V0V FG FG

DOBDO

A

CH
0V

FNCFNOCH3CH

2

F

CH 3

Fig. 29: Terminal block - reception level for CH 3 for OZD Profi

G12DU ATEX 1 (OZD Profi ...DK ... and OZD Profi ...
DE ... : after opening the housing)

In an error-free operation, the connections F and FNC
(NC -> normally connected) are connected mutually by
an internal relay contact. At occurrence of an error or dis­connected supply voltage, F and FNO (NO -> normally
open) are mutually connected.

Kindly refer to chapter 6.1 “LED indicators“, page 45 for
breakdowns signalled with the signalling contact.

5 Startup 5.10 Connect operating voltage supply

42

OZD Profi G12D... ATEX 1 V. 03 07/2014

z

Warning!

Work on ex-e cables in zone 1 is permitted only
with hot work permit or in the current-free state.

The repeaters are equipped with a connection for two
independent operating voltages.

The supply voltage connection is designed in the ignition
protection ex-e EN 60079-7:2007. The connection cables
are placed on the front side of the
OZD Profi G12DU ATEX 1 on three separate single termi­nals (24 V, 24 V* and 0V). The terminals have a valid type
approval certificate.
The 4 connections of the double terminal for the 0V con ­nection are galvanically connected to each other, colour
gray, ex-e.

Note: The terminals are accessible for OZD Profi … DK
… and OZD Profi … DE … after opening the protective
housing.



Connect the cables for the operating voltage supply
to the terminal block, see fig 30.



Lead the RS cable for the operating voltage for OZD
Profi G12DK ATEX 1 and OZD Profi G12DE ATEX as
shown in figure 31 through the cable entries (PG
glands).



Ensure adequate stress relief of the cables and note
its minimum bending radii.

z

Warning!
Supply the module only with a stable safety low
voltage as per IEC 950/EN 60 950/VDE 0805 of

maximum +32 VDC (typ. +24 VDC). Voltage source
must comply with NEC, class 2 as per the UL/CSA
approval.

For increasing the operational safety, the module can be
supplied redundant through terminals 0 V and 24 V* .
At breakdown of the reg ul ar supply voltage the module
automatically switches to the redundant operating vol ­tage supply. There is no load distribution between indi­vidual supply options.
The signalling contact does not signal the breakdown of
an individual 24 V supply. For monitoring, like the sig­nalling contact, both the supplies must be placed on an
input module.

5.10 Connect operating voltage supply

24V*24

V

DIBDI

A

0V0V FG FG

DOBDO

A

CH
0V

FNCFNOCH3CH

2

F

0 V /

+24 V

0 V /
+24 V*

Fig. 30: Terminal block - connection of the supply voltage for

OZD Profi G12DU ATEX 1 (OZD Profi ...DK ... and OZD
Profi ... DE ... : after opening the housing)

S0S1 S2 S3 S4S5 S6 S7

System

CH1

CH2

CH3

CH3

CH2

24V*24

V

DIBDI

A

0V0V FG FG

DOBDO

A

CH
0V

FNCFNOCH3CH

2

F

943881321000000001

Ser.-No.: 0123456789

Fig. 31: Cable lead-through of the supply voltage for OZD Profi

G12DK ATEX 1
(OZD Profi ... DE ... : analog)

5.11 Monitor LED indicators

43

5 Startup

OZD Profi G12D... ATEX 1 V. 03 07/2014



LEDs for diagnosis are on the front side of the device
of OZD Profi G12DU ATEX 1 .
You can find the meaning in chapter 6.1, LED­indicators, page 45.

Note: For OZD Profi … DK … and OZD Profi … DU …
the LEDs are visible after opening the protective housing.

Note: For the OZD Profi … DK … a housing cover with a
window is provided as an accessory, so that the LEDs
are always visible.

5.11 Monitor LED indicators

5 Startup

44

OZD Profi G12D... ATEX 1 V. 03 07/2014

6.1 LED indicators

45

6 Troubleshooting

OZD Profi G12D... ATEX 1 V. 03 07/2014

6 Troubleshooting

Fig. 32: LED indicators for OZD Profi G12DU ATEX 1

(OZD Profi ...DK ... and OZD Profi ... DE ... : after opening the housing)

S0 S1 S2 S3 S4 S5 S6 S7

System

CH1

CH2

CH3

CH3

CH2

943881321000000001

Ser.-No. : 0123456789

Possible reasons

– The transmission speed was detected and the voltage supply is ok

– Breakdown of the voltage supply (total breakdown*)
– Supply voltage wrongly connected
– Defective module

Transmission rate not yet detected
– No transmitting bus station available
– No connection to a telegram transmitting partner module
– Transmitting and receiving fibre optics are swapped
– Transmission rate does not comply with the PROFIBUS standard
– Only one active bus station is connected, which transmits token only to itself.

After connecting a second bus station the indicator must change (token tele ­grams alone are not adequate for setting the transmission rate).

– The connected RS 485 segment is closed only on one side

Transmission rate detected but
– The slot time of the network could not be determined (network parameter

HSA set very low, no transmitting bus station avail able)

– An optical channel is set at mode “redundant optical ring“, but not the sec-

ond one (this operating mode must be always set at both optical channels)

– The slot time of the network is set at a very low value

* for redundant supply breakdown of both supply voltages

LED indicators

System

 glows green
 does not glow

 blinks red

 blinks red/green

Signalling contact

does not respond

responds

does not respond

does not respond

6.1 LED indicators

6 Troubleshooting 6.1 LED indicators

46

OZD Profi G12D... ATEX 1 V. 03 07/2014

Possible reasons

Signals are received on RS 485 bus cable.

– Bus station is not connected
– Connected bus station is not switched on
– Interruption of one or both wires of the RS 485 bus cable

Sporadic interferences through
– Inadequate sheathing of the RS 485 bus cable
– Open, i.e. RS 485 bus cable connected only on one side to the module
– RS 485 segment not connected or connected only on one side
– Pull/insert a RS 485 bus terminal or terminal plug
Constant interference due to
– Wires A and B of the RS 485 bus cable are swapped
– Short circuit on the RS 485 bus cable
– Transmission timeout caused by a bus station, which is in a bus segment

connected to channel 1

– Module and a bus station connected through channel 1 transmit simulta -

neously (e.g. due to duplicate address allocation or very little set slot time or
when removing the segmentation in the optical line, see chap. 4.1.1, page 20)

– RS 485 driver of the module is defective (e.g. after lightning)

PROFIBUS telegrams are received on the optical channel

Operating mode “Line with fibre optic path monitoring“ and

“redundant optical ring“

Transmission rate is not yet detected - “LED” blinks red
– No transmitting bus station available
– Transmitting and receiving fibre optics are swapped
– No partner module connected or partner module is not switched on
– Connected partner module defective

Transmission rate is detected - LED “system” glows green
– If operating mode “redundant optical ring“ is set, the

optical channel functions as standby channel There is no malfunction in the
OZD Profi or on the fibre optic

– If one of the operating modes “Line fibre optic path monitoring …“ is set, no

PROFIBUS telegrams are received on the optical channel. There is no mal­function in the OZD Profi or on the fibre optic.

Transmission rate is detected - LED “system” glows green or blinks red/green
– There is no transmitting bus station (fibre optic connection is ok)

– Transmitting and receiving fibre optics are swapped
– No partner module connected or partner module is not switched on
– Connected partner module defective
– Transmission timeout of the connected partner module
– Interruption of a fibre optic cable
– Fibre optic path to partner module is longer than allowed
– Loose connection on a fibre optic connector
– Optical fibre in the fibre optic connector is loose
– If on a redundant optical ring the channel LED glows red even after rectifica-

tion of fibre optic failure, check whether setting of parameter HSA described
in chap. 4.3 page 22 has been complied with.

– Periodically occurring error (see above)
– Loose connection on a fibre optic connector
– Optical fibre in the fibre optic connector is loose
– Only one active bus station is connected, which transmits token only to itself.

After connecting a second station, no error should be displayed

Operating mode “Line without fibre optic path monitoring”

Signals are received on the optical channel

– No transmitting bus station available
– Transmitting and receiving fibre optics are swapped
– No partner module connected or partner module is not switched on
– Connected partner module defective

LED indicators

CH1

 glows yellow

electric



does not glow

 blinks/glows red

CH2, CH3

 glows yellow

optical

 does not glow

 blinks yellow
 glows red

 blinks red/yellow

 glows yellow
 does not glow

Signalling contact

does not respond

does not respond

responds

does not respond

does not respond

does not respond

does not respond

responds

responds

does not respond

does not respond

Table 1: Meaning of LED indicators and signalling by signal contact

6.1 LED indicators

47

6 Troubleshooting

OZD Profi G12D... ATEX 1 V. 03 07/2014

This chapter provides you help to locate the location of
error after error signalling (LED or signal contact).
For this kindly note the description of the LED indicators
in chapter 6.1, pag 45.

6.2 Fault finding

Error display in the system LED

See description of LED indicators in chapter 6.1,
page 45.

Error display on CH1

Check whether



the DIP switch is in the ON position, if the OZD Profi
on the electric star segment is on a star topology. (see
chapter 4.2, “Star topology“, page 21)



the error pattern can be seen even after disconnecting
the electrical bus stations.
Also: device defective”.
Replace the OZD Profi.
No longer exists: The interference is from the
RS485 bus segment.

Check
– the structure and the shielding of the RS485

bus segment

– the RS485 bus segment with a PROFIBUS bus

monitor

– configuration of all bus stations.

* Is not applicable, if the monomaster of a PROFIBUS
network is connected to a RS485 bus segment that is
to be checked In this case replace the conspicuous
OZD profi with another OZD Profi of the network and
subsequently execute the above test.

If the error migrates with the OZD Profi, there is a
defect in the device. Replace the OZD Profi.

If the error does not migrate with the OZD Profi, then
the interference is from the RS485 bus segment.
Execute measures as described above.

Error display on CH2 / CH3

1. Check whether



optically only repeaters of the same type are connect­ed mutually (see chapter 4, “network topologies”
page 19).



he optical fibre is permitted for the used module type
and the permitted length is not exceeded



optical channels, which are mutually connected, have
the same operating mode set. (see chapter 5.4; “set­ting the operating mode, connect/disconnect termi­nating resistors“, page 34)



when connecting and laying the optical bus cables,
specifications in 5.5 “connect optical bus cables”
page 36 were complied with.

2. Determine the optical reception level (see Appendix
A.1,”determine reception level of the optical chan­nels“, page 57):

– Level is in the range “Function not guaranteed“.



Check the optical fibre attenuation with an opti­cal level measuring device.
very high: Replace optical fibre
within the One of the two OZD Profi of the
valid range: faulty fibre optic segment is defective.

First replace the other OZD Profi of the
faulty fibre optic segment (i.e. the OZD
Profi, which delivers the transmission ­signal to the above measurement). If
the error persists, instead of this
replace the other OZD Profi.

– Level is in the range “optical system reserve

reduced“ or “normal operation“.



As described above, check the optical reception
level of the other OZD Profi of the faulty fibre optic
segment on the appropriate channel.

6 Troubleshooting 6.1 LED indicators

48

OZD Profi G12D... ATEX 1 V. 03 07/2014

If the transmission in the RS 485 network is not satisfacto­ry even after clarification of points in chapter 6.2 , “fault
finding”, page 47, send your replies to the following
queries as well as the requested documents to our ser­vice hotline (contact address: see chapter 6.4, page 49):

1. Precise type description of OZD Profi G12D… ATEX

1. Kindly specify the 18 digit number printed on the
device for clear identification.

2. Does the bus system to be transmitted comply with
standard RS 485 in the physical interface?

3. Does the bus access method of the used bus system
ensure that only station on the bus can be accessed
at any point of time?
Attention! collision-afflicted access methods (e.g.
CAN) are not permitted!

4. Does the fieldbus system work in “half duplex-“ or
“full duplex“ procedure?

5. Give a possibly detailed error description in your own
words.

6. Send a detailed network plan with
– the fibre type and the fibre length
– the location and the length of the electrical

seg ments,

– the values, the type and the position of the

termination on the electrical bus segment.

7. Which data rate is used?

8. How are the DIP switches set for the individual OZD
Profi G12D… ATEX 1 ?

9. What is the status of the LEDs on the concerned
OZD Profi G12D… ATEX 1?

10. Specify the voltage value of the analog voltage out­puts (terminal Ua2 and Ua3 on the 3 pole terminal
block on the front side of the device) of the con­cerned port.

11. Name and manufacturer of the fieldbus system?

Important!

We cannot process your request without complete
details on questions 1 to 11!

Note:

The current version of this manual is on the Internet
under http://www.hirschmann.com/ through the product
search for product.
The version of the manual is on every page of the manual
at the bottom opposite the page number.

6.3 Problem report

– Level is on both OZD Profi of the faulty fibre optic

segment in the range “optical system reserve
reduced“ or “normal operation“: one of the two
OZD Profi of the faulty fibre optic segment is
defective.



First replace a OZD Profi of the faulty fibre optic
segment. If the error persists, instead of this
replace the other OZD Profi.

6.3 Problem report

49

6 Troubleshooting

OZD Profi G12D... ATEX 1 V. 03 07/2014

Contact address for technical support

Hirschmann Automation and Control GmbH
Stuttgarter Strasse 45 - 51
72654 Neckartenzlingen
Germany

Tel.: [phone]
E-Mail: [e-mail]
Internet: http://www.hirschmann.com

6.4 Contact address

6 Troubleshooting

50

OZD Profi G12D... ATEX 1 V. 03 07/2014

7.1 Configuration of redundant optical rings

51

7 Configuration

OZD Profi G12D... ATEX 1 V. 03 07/2014

7 Configuration

Due to the telegram delays through cables and network
components and through monitoring mechanism in the
network components, when configuring the PROFIBUS

network parameter “slot time“ must be adapted to the
network extension, network topology and the data rate.

In the redundant optical ring following config uration con­ditions must be fulfilled (details see chapter 4.3, “redun­dant optical ring“, page 22):

 (1) Configuration of a non-available bus station

 (2) Increase in retry value to minimum value 3

 (3) Reviewing and adjusting the slot time

For setting the parameter under (2) and (3) use user-spe­cific profile of the configuration tools.

Calculate the slot time according to the following equation:

Slot time = a + (b .Length

of the fibre optic

) + (c .number

OZD

)

 “Slot time” is the monitoring time in bit times

 “Length

fibre optic

“ is the total of all fibre optic

cables (segment lengths) in the
network.
Length specification must in km !

 “Number

OZD

“ is the number ofOZD Profi

G12D... ATEX 1 in the network.

Factors a, b and c depend upon the transmission speed
and can be inferred from the following table.

7.1 Configuration of redundant optical rings

Data rate a b c

12 MBit/s

1)

1651 240 28

6 MBit/s

1)

951 120 24

3 MBit/s

1)

551 60 24

1,5 MBit/s 351 30 24
500 kBit/s 251 10 24
187,5 kBit/s 171 3,75 24

93,75 kBit/s 171 1,875 24
45,45 kBit/s 851 0,909 24
19,2 kBit/s 171 0,384 24

9,6 kBit/s 171 0,192 24

Table 2a: Constants for calculating the slot time for

DP standard (redundant optical ring)

Data rate a b c

12 MBit/s

1)

1651 240 28

6 MBit/s

1)

951 120 24

3 MBit/s

1)

551 60 24

1,5 MBit/s 2011 30 24
500 kBit/s 771 10 24
187,5 kBit/s 771 3,75 24

93,75 kBit/s 451 1,875 24
45,45 kBit/s 851 0,909 24
19,2 kBit/s 181 0,384 24

9,6 kBit/s 171 0,192 24

Table 2b: Constants for calculating the slot time for DP/FMS

(“Universal“) and DP with S595U
(redundant optical ring)

7 Configuration 7.1 Configuration of redundant optical rings

52

OZD Profi G12D... ATEX 1 V. 03 07/2014

The slot time calculation considers only the optical net­work and the connection of bus stations to the OZD Profi
through max. 20 m length RS 485 bus segment. Longer
RS 485 bus segments must be calculated additionally,
wherein, they are added to the Length

fibre optic

.

Note:

If the slot time is calculated with a very low value, it may
lead to malfunctions and error displays on OZD Profi
12M …. The system LED blinks red/green.

53

8 Technical data

OZD Profi G12D... ATEX 1 V. 03 07/2014

OZD Profi G12 … DU ATEX 1 DK ATEX 1 DE ATEX 1

power supplies

Operating voltage 18 V to 32 VDC, typ. 24 VDC, (redundant inputs decoupled),

Safety low voltage, galvanically separated
Power consumption max. 200 mA
Power input 5 W
Signalling contact

Maximum witching voltage 60 VDC; 42 VAC safety low voltage), galvanically separated from

housing and all electric connections

Maximum switching current 1.0 A

Signal transmission

Transmission speed 9.6; 19.2; 45.45; 93.75; 187.5; 500 kBit/s

1.5; 3; 6; 12 Mbit/s
Adjustment of transmission speed automatic
Bit error rate <10

-9

Signal processing time (any input/output) < 6.5 t

bit

Retimer

Input channel 1 to 3

Signal distortion ±30 %
Bit length ±0,12 %

Output channel 1 to 3

Medium bit length ±0,01 %

Electric channel

Input/output signal RS 485 level
Input resistance –10 V to + 15 V

Optical channels

Wave length 860 nm
Launchable optical power

– in glass fibre G 50/125 –15 dBm
– in glass fibre G 62.5/125 –13 dBm

Optical input min. –28 dBm
Transmission limit receiver –3 dBm
Bridgeable distance

– with glass fibre G 50/125 0 - 3000 m

1)

(860 nm: 3.0 dB/km)

– with glass fibre G 62.5/125 0 - 3000 m

1)

(860 nm: 3.5 dB/km)

Plug-in connector B/2.5

8 Technical data

8 Technical data

54

OZD Profi G12D... ATEX 1 V. 03 07/2014

OZD Profi G12 … DU ATEX 1 DK ATEX 1 DE ATEX 1

Electromagnetic Compatibility (EMC)

Emitted immunity Limit class A (EN 55022), FCC CFR 47 part 15, Class A
Interference immunity against static discharge on shield connection and housing parts: ±4 kV contact discharge

(EN 61000-4-2)

Interference immunity against high – 10 V/m at 80% amplitude modulation with 1 kHz,
frequency radiation – 80 MHz - 1 GHz (EN 61000-4-3)

–10 V/m with 50% duty cycle at 900 MHz (ENV 50204)
–10 V/m at 80% amplitude modulation with 1 kHz,

– 10 kHz - 80 MHz

Interference immunity against conducted On power supply lines and sheathed
disturbances (burst) RS 485 bus cables: ±2 kV (EN 61000-4-4)

Interference immunity against conducted – On power supply lines: ±1 kV symmetric
disturbances (surge voltage, surge) – On sheathed RS 485 bus cables:: ±2 kV asymmetric

– (EN 61000-4-5)

Climatic ambient conditions

Ambient temperature –20 °C to + 60 °C (IEC 60068-2-1, IEC 60068-2-2)
Storage temperature –40 °C to + 70 °C (IEC 60068-2-14)
Relative humidity 10 % - 100 %
Air pressure Operation: to 2000 m (795 hPa)

Transport and storage: to 3,000 m (700 hPa)

Pollution degree 2

Explosion protection

EC-type examination certification PTB 09 ATEX 2044 X PTB 09 ATEX 2045 PTB 09 ATEX 2045
Fibre optic inherent safe
Ignition protection II 2 (1) G Ex mb e [ia] opis II, IIC, IIB T4/T6

- II 2 (1) D Ex tD A21 II 2 (1) D Ex tD A21
IP 66 T 130 °C IP 66 T 130 °C

Cable glands

Supply voltage

Number of glands - 2 2
Diameter of gland - M 20 M 20
Permissible cable diameter - 5.5 - 13 mm 5.5 - 13 mm

Signalling contact

Number of glands - 1
Diameter of gland - M 16 M 16
Permissible cable diameter - 5.5 - 10 mm 5.5 - 10 mm

RS 485 bus cable

Number of glands - 2 2
Diameter of gland - M 16 M 16
Permissible cable diameter - 5.5 - 10 mm 5.5 - 10 mm

Optical connections

Number of glands - 2 2
Diameter of gland - M 20 M 20
Permissible cable diameter - 6.4 - 13 mm 6.4 - 13 mm

Not used

Number of glands - 1 1
Diameter of gland - M 16 M 16
Permissible cable diameter - 5.5 - 10 mm 5.5 - 10 mm

Functional earth - fixed mount fixed mount

connection connection

55

8 Technical data

OZD Profi G12D... ATEX 1 V. 03 07/2014

OZD Profi G12 … DU ATEX 1 DK ATEX 1 DE ATEX 1

Test torques

Cover screws - 2.50 Nm 2.50 Nm
Pressure screw of cable entry M12 - 1.65 Nm ­Pressure screw of cable entry M16 - M20 - 2.50 Nm ­Pressure screw of cable entry M25 - 3.50 Nm ­Pressure screw of metal ex-e cable entry M16 - - 7.5 Nm

Type E1WF/e, (ex-e)

Pressure screw of metal ex-e cable entry M20 - - 10 Nm

Type E1WF/e, (ex-e)

Pressure screw of metal ex-e cable entry M25 - - 15 Nm

Type E1WF/e, (ex-e)

Protection class IP 40 IP 66 IP 66
Dimensions (B x H x T) see chapter 5.3, page 31
Housing Encapsulation cup Plastic housing Stainless steel

housing

Mass approx. 1.5 kg approx. 2.4 kg approx. 3.7 kg

1) Depending upon the optical performance record, the path length between two OZD Profi must not be exceeded in any case.

8 Technical data

56

OZD Profi G12D... ATEX 1 V. 03 07/2014

9 Accessories

OZD SFK ATEX, Order no. 943 884-001

Housing cover with window for OZD Profi G12DK ATEX 1.

For replacing the housing cover (without window) of
OZD Profi G12 DK ATEX 1.

A.1 Define reception level of optical channels

57

8 Technical data

OZD Profi G12D... ATEX 1 V. 03 07/2014

A Appendix

A.1 Define reception level of optical channels

Fig. 33: Relation between the output voltage on the terminals CH2 and CH3 and the signal quality at port 2 or port 3

Normal operation

0 100 200 300 400 500 600 700 800 900

Output voltage [mV]

Signal

quality

good

critical

bad

Optical system reserve reduced

Function not guaranteed

Warning threshold,
defined by
software

Fixed
alarm level
of the relay

Note:

For a valid measuring value it is necessary that the partner-OZD Profi transmits regular PROFIBUS telegrams at the
other end of fibre optic. This can be recognised from the LED image of the partner-OZD Profi (see chap. 6.1, “LED­indica tors“, page 45).

Output voltages on the measuring outlets are influenced by many influence factors like e.g.:

 Strength of the transmission power of the partner OZD Profi
 Ambient temperature of the optical transmitter and the receiver
 Attenuation of the transmission path
 Used transmission rate

The measuring outlets are hence not planned as replacement of calibrated level measuring device with calibrated
light. The read-out value is only used for classifying the received optical signal in the 3 classes

 good (Normal operation)
 critical (Optical system reserve reduced)
 bad (Function not guaranteed)

Measurement must be done with a standard floating and high impedance voltmeter. A connection to the housing of
OZD Profi G12D... ATEX 1 is permitted neither by the measuring outputs nor the reference potential.

Hirschmann Automation and Control GmbH
Stuttgarter Strasse 45 - 51
72654 Neckartenzlingen
Germany

Tel.: [phone]
E-Mail: [e-mail]
Internet: http://www.hirschmann.com

039 677-001-E-03-0714 Printed in Germany