Westermo ODW-710-F2 User Manual

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User Guide

6651-2211

ODW-710-F2

Fibre Optic Modem

Westermo Teleindustri AB

Industrial Converter

PROFIBUS DP to

Fibre Optic Link.

Point to Point applications

www.westermo.com

Legal information

The contents of this document are provided “as is”. Except as required by applicable law, no warranties of any kind, either express or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose, are made in relation to the accuracy and reliability or contents of this document. Westermo reserves the right to revise this document or withdraw it at any time without prior notice.

Under no circumstances shall Westermo be responsible for any loss of data or income or any special, incidental, and consequential or indirect damages howsoever caused.

More information about Westermo can be found at the following Internet address:

http://www.westermo.com

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Safety

Before installation:

Read this manual completely and gather all information on the unit. Make sure that you understand it fully. Check that your application does not exceed the safe operating specifications for this unit. This unit should only be installed by qualified personnel. This unit should be built-in to an apparatus cabinet, or similar, where access is restricted to service personnel only. The power supply wiring must be sufficiently fused, and if necessary it must be possible to disconnect manually from the power supply. Ensure compliance to national installation regulations. Branch circuit protection (fuse) is required for this unit with rating not exceeding 20 A. Product should be connected to UL Listed power supplies rated 12 – 48 VDC, min 500 mA or 24 VAC, min 500 mA or reliably grounded DC SELV source*. This unit uses convection cooling. To avoid obstructing the airflow around the unit, follow the spacing recommendations (see Cooling section).

Before mounting, using or removing this unit:

Prevent access to hazardous voltages by disconnecting the unit from the power supply. Warning! Do not open a connected unit. Hazardous voltages may occur within

this unit when connected to a power supply.

Class 1 Laser Product

This unit is designed to meet the Class 1 Laser regulations. However, the user is warned not to look directly into fibre optical fibre port or any connected fibre.

Care recommendations

Follow the care recommendations below to maintain full operation of the unit and to fulfil the warranty obligations. This unit must not be operated with covers or lids removed. Do not attempt to disassemble the unit. There are no user serviceable parts inside. Do not drop, knock or shake the unit. Rough handling beyond the specification may cause damage to internal circuit boards. Do not use harsh chemicals, cleaning solvents or strong detergents to clean the unit. Do not paint the unit. Paint can clog the unit and prevent proper operation. Do not expose the unit to any kind of liquids (rain, beverages, etc). The unit is not waterproof. Keep the unit within the specified humidity levels. Do not use or store the unit in dusty, dirty areas. Connectors as well as other mechanical parts may be damaged. If the unit is not working properly, contact the place of purchase, nearest Westermo distributor office, or Westermo Tech support. Fibre connectors are supplied with plugs to avoid contamination inside the optical port. The plug should be fitted when no optical fibre is inserted in the connector, e.g. during storage, service or transportation.

* Applicable for ODW-710-F2 only

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Note. Fibre Optic Handling

Fibre optic equipment requires careful handling as the fibre components are very sensitive to dust and dirt. If the fibre is disconnected from the modem, the protective plug on the transmitter/receiver must be replaced. The protective plug must be kept on during transportation. The fibre optic cable must also be protected in the same way.

If this recommendation is not followed, it can jeopardise the warranty.

Cleaning of the optical connectors

In the event of contamination, the optical connectors should be cleaned by using forced nitrogen and some kind of cleaning stick.

Recommended cleaning fluids:

• Methyl-, ethyl-, isopropyl- or isobutyl-alcohol

• Hexane

• Naphtha

Maintenance

No maintenance is required, as long as the unit is used as intended within the specified conditions.

Type Approval / Compliance

EMC EN 61000-6-1, Immunity residential environments

EN 61000-6-2, Immunity industrial environments

EN 61000-6-3, Emission residential environments

EN 61000-6-4, Emission industrial environments

EN 55022, Emission IT equipment, class A

EN 55024, Immunity IT equipment

FCC part 15 Class A

EN 50121-4, Railway signalling and telecommunications apparatus

IEC 62236-4, Railway signalling and telecommunications apparatus

DNV Standard for Certification no. 2.4***

Safety UL/CSA/IEC/EN 60950-1, IT equipment*

EN 60950-1, IT equipment**

Type Approval / Compliance

ATEX** EN 60079-0 and EN 60079-15

* Applicable for ODW-710-F2 only ** Applicable for ODW-710-F2 Ex only *** Applicable only for article number 3651-0712

FCC Part 15.105 Notice:

EN 55022 Notice:

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

This is a class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.

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ATEX Information (Applicable for ODW-710-F2 EX only)

General

This unit is intended for use in Zone 2 hazardous location only.

Marking

II 3 G Ex nA IIC T4 Gc SPECIAL CONDITION

WARNING – DO NOT SEPARATE WHEN ENERGIZED

Indicate that this unit complies with relevant European standards that are harmonised with the 94/9/EC Directive (ATEX).

Ex Indicates that this unit is in conformity with relevant European Ex standard(s).

IIC Gas group, a typical gas i hydrogen.

SPECIAL

CONDITION

Equipment group II. This unit can be installed in all places with an explosive gas atmosphere other than mines susceptible to firedamp Equipment category 3. A category is the classification according to the required level of protection. This unit ensures the requisite level of protection during normal operation and is intended for use in areas in which explosive atmosphere caused by gases, vapours, mists, or dust mixtures are unlikely to occure or, if they do occure, are likely to do so only infrequently and for a short periode only. Indicates protection concerning explosive atmospheres caused by gases, vapours or mists (G).

Type of protection used. This unit is a non-sparking device "nA" which is constructed to minimize the risk of occurence of arcs or sparks capable of creating an ignition hazard during conditions of normal operation.

Temperature class T4 (T4 = 135°C). This unit is classified in accordance with its maximum surface temperature (external and internal). Equipment protection level Gc (EPL Gc). Equipment for explosive gas atmospheres, having a "enhanced" level of protection, which is not a source of ignition in normal operation and which may have some additional protection to ensure that it remains inactive as an ignition source in the case of regular expected occurences. EPL Gc are analogous to the ATEX Categories (Category 3 G = EPL Gc). This unit has a special condition of use. The special condition for safe use contains safety related information that is necesarry for the correct installation and safe use.

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Ratings

Power (12 – 48) VDC; 400 mA

Ambient temperature –40ºC ≤ Ta ≤ +60ºC

Ingress protection (IP) IP21

Maximum surface temperatur 135ºC (temperature class T4)

Safety Control Drawing

Degree of protection IP 21 Ambient temperature –40°C to +60°C

Installation spacing

Direction relative this unit!

1234

Minimum 25 mm above / below Minimum 10 mm left / right

Position Descripton Input / Output values

1 In & out / Relay contact (NO)

2 In & out / Relay contact (C) 3 In & out / Relay contact (NC)

Galvanically isolated via mechanical relay. See user manual for proven transient protection.

Position Descripton Input / Output values

1 – / – 2 – / – 3 In/out / RxD/TxD-P 4 Out / CNTR-P 5 – / DGND 6 Out / VP 7 – / – 8 In/Out / RxD/TxD-N 9 Not connected

Uin = 60 VDC max

Iin = 500 mA max

= ± 5 Vpk

max

= ± 400 mA

max

Data rate: 9600 bit/s to 12 Mbit/s

Position Descripton Output values

Rx In / Receive port Tx Out / Transmit port

Position Descripton Input values

1 In / Common

2 In / +Voltage A

3 In / +Voltage B

4 In / Common

See section Type tests and environmental conditions in this user manual for proven transient protection.

Uin = (10 – 60) VDC Iin = 550 mA max PIn = Max 5.5 W

Max 0 dBm

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SPECIAL CONDITION FOR SAFE USE

Ambient temperature:

This unit is designed for use in extreme ambient temperature conditions as follows: –40 ºC ≤ Ta ≤ +60 ºC

Installation in an apparatus cabinet:

This unit requires installation in an Ex certified apparatus cabinet suitable for the area of use and providing a degree of protection of at least IP54.

Resistance to impact:

This unit requires installation in an apparatus cabinet where adequate resistance to impact is provided by the apparatus cabinet. See "Installation in an apparatus cabinet" above for requirements on the external apparatus cabinet.

Resistance to light:

This unit requires installation in an apparatus cabinet where it is protected from light (for example daylight or light from luminaires). See "Installation in an apparatus cabinet" above for requirements on the external apparatus cabinet.

Secureness of plugs:

When this unit is installed in an explosive atmospheres, all connectors must be mechanically secured to prevent loosening.

Conductor temperature:

When this unit is installed in locations with high ambient temperature, special precautions shall be taken upon the choice of external conductors and the temperature rating of the conductor(s).

Directive 94/9/EC alongside with other directives:

Directive 2004/108/EC (EMC) applies and to assure a safe performance of this unit under the scope of Directive 94/9/EC, refer to the electromagnetic immunity level specified under "Type tests and environmental conditions" in this manual.

Standards and date of compliance

EN 60079-0 and EN 60079-15 2010-12-17

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Declaration of Conformity

Org.nr/

Registered office

Westermo Teleindustri AB

Declaration of conformity

The manufacturer Westermo Teleindustri AB

Herewith declares that the product(s)

Type of product Model Art no

Industrial fiberoptic repeaters/media converters

is in conformity with the following EC directive(s).

No Short name

2004/108/EC Electromagnetic Compatibility (EMC) 94/9/EC1 Equipment Explosive Atmospheres (ATEX)

References of standards applied for this EC declaration of conformity.

No Title Issue EN 61000-6-1 Electromagnetic compatibility – Immunity residential environments 2007

EN 61000-6-2 Electromagnetic compatibility – Immunity industrial environments 2005 EN 61000-6-3 Electromagnetic compatibility – Emission residential environments 2007 EN 61000-6-4 Electromagnetic compatibility – Emission for industrial

EN 55022 Information technology equipment - Emission 2006 + A1:2007 EN 55024 Information technology equipment - Immunity 1998 + A1:2001 +

EN 50121-4 Railway applications – Electromagnetic compatibility – Emission

EN 60079-0 Explosive atmospheres – Equipment – General requirements 2009 EN 60079-15 Electrical apparatus for explosive gas atmospheres –

The last two digits of the year in which the CE marking was affixed: 11

SE-640 40 Stora Sundby, Sweden

ODW-700 series 3651-07xx ODW-700EX series 3651-37xx

environments

and immunity of the signalling and telecommunications apparatus

Construction, test and marking of type of protection “n” electrical apparatus

2007

A2:2003 2006

2005

Pierre Öberg Technical Manager 15th June 2011

Applicable for ODW-700EX series only.

Postadress/Postal address

S-640 40 Stora Sundby 016-428000 016-428001 52 72 79-4 5671-5550 556361-2604 Eskilstuna

Sweden Int+46 16428000 Int+46 16428001

Tel.

Telefax

Postgiro

Bankgiro Corp. identity number

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Type tests and environmental conditions

Electromagnetic Compatibility

Phenomena Test Description Level

ESD EN 61000-4-2 Enclosure contact ± 6 kV

RF field AM modulated IEC 61000-4-3 Enclosure 10 V/m 80% AM (1 kHz), 80 – 800 MHz

RF field 900 MHz ENV 50204 Enclosure 20 V/m pulse modulated 200 Hz, 900 ± 5 MHz Fast transient EN 61000-4-4 Signal ports ± 2 kV

Surge EN 61000-4-5 Signal ports unbalanced ± 2 kV line to earth, ± 2 kV line to line

RF conducted EN 61000-4-6 Signal ports 10 V 80% AM (1 kHz), 0.15 – 80 MHz

Pulse Magnetic field EN 61000-4-9 Enclosure 300 A/m, 6.4 / 16 µs pulse Voltage dips

and interruption

Mains freq. 50 Hz EN 61000-4-16 Signal ports 100 V 50 Hz line to earth Mains freq. 50 Hz SS 436 15 03 Signal ports 250 V 50 Hz line to line Radiated emission EN 55022 Enclosure Class B

Conducted emission EN 55022 AC power ports Class B

Dielectric strength EN 60950 Signal port to all other

Environmental

Temperature Operating –40 to +60°C

Humidity Operating 5 to 95% relative humidity

Altitude Operating 2 000 m / 70 kPa Service life Operating 10 year Vibration IEC 60068-2-6 Operating 7.5 mm, 5 – 8 Hz

Shock IEC 60068-2-27 Operating 15 g, 11 ms

Packaging

Enclosure, ODW-710-F2 UL 94 PC / ABS Flammability class V-1 Enclosure,

ODW-710-F2 EX Dimension W x H x D 35 x 121 x 119 mm Weight 0.26 kg Degree of protection IP 21 Cooling IEC 529 Enclosure Convection Mounting Horizontal on 35 mm DIN-rail

EN 61000-4-11 AC power ports 10 & 5 000 ms, interruption

FCC part 15 Class A

FCC part 15 AC power ports Class B EN 55022 DC power ports Class A

Enclosure air ± 8 kV

20 V/m 80% AM (1 kHz), 800 – 1000 MHz 20 V/m 80% AM (1 kHz), 1400 – 2700 MHz

Power ports ± 2 kV

Signal ports balanced ± 2 kV line to earth, ± 1 kV line to line Power ports ± 2 kV line to earth, ± 2 kV line to line

Power ports 10 V 80% AM (1 kHz), 0.15 – 80 MHz

200 ms, 40% residual voltage 500 ms, 70% residual voltage

isolated ports Power port to other

isolated ports

Storage & Transport –40 to +70°C Maximum surface

temperature

Storage & Transport 5 to 95% relative humidity

Cabelec 6141

2 kVrms 50 Hz 1min

3 kVrms 50 Hz 1min 2 kVrms 50 Hz 1min (@ rated power < 60V)

135ºC (temperature class T4)

2 g, 8 – 500 Hz

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Functional description

POWER

+VA

+VB

COM

STATUS

NO C

Switches

O V

Internal Electronics

LED’s

O V

SFP Fibre transceive

O C

PROFIBUS DP

RxD/TxD - P

RxD/TxD - N

SHIELD

CH 1

CH 2

OVP Over Voltage Protection OCP Over Current Protection

Converter PROFIBUS DP – optical fibre

ODW-710-F2 is a fibre optic modem that converts between electrical PROFIBUS DP and a fibre optical link.

Repeater – optical fibre links

ODW-710-F2 is a fibre optic repeater that repeats received data from one fibre link out to the other link. This is useful e.g. for long distance communication, where electromagnetic interference may occur or when isolation of the electrical network is needed. The maximum optical fibre distance depends on selected fibre transceiver and fibre type. Distances up to 80 km (50 miles) are available.

Data rate up to 12 Mbit/s

ODW-710-F2 converts PROFIBUS DP data using data rates from 9 600 bit/s up to 12 Mbit/s. Retiming of the PROFIBUS DP data ensures that the correct signal form is transmitted from the ODW-710-F2 converter.

Automatic data rate detection

The PROFIBUS data rate is set automatically as soon as the ODW-710-F2 receives a correct data frame, whether data is received from PROFIBUS DP or the fibre optic link. The detected data rate remains until a number of consecutive faulty received frames have been detected or no further frames are detected within the timeout period. The timeout period is set by switches, with the default setting of 31 faulty frames or 5 seconds without any received frames.

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Interface specifications

Power

Rated voltage ODW-710-F2: 12 to 48 VDC and 24 VAC

Operating voltage ODW-710-F2: 10 to 60 VDC and 20 to 30 VAC

Rated current 400 mA @ 12 VDC

Rated frequency ODW-710-F2: DC and 48 to 62 Hz

Inrush current I2t 0.2 A2s

Startup current* 1.0 Apeak

Polarity Reverse polarity protected

Redundant power input Ye s

Isolation to PROFIBUS DP and Status port

Connection Detachable screw terminal Connector size 0.75 – 2.5 mm2 (AWG 18 – 13)

Shielded cable Not required

* External supply current capability for proper startup

Status

Port type Signal relay, changeover contacts

Rated voltage Up to 48 VDC

Operating voltage Up to 60 VDC

Contact rating 500 mA @ 48 VDC

Contact resistance < 50 mW

Isolation to PROFIBUS DP and Power port

Connection Detachable screw terminal Connector size 0.2 – 2.5 mm2 (AWG 24 – 13)

Shielded cable Not required

ODW-710-F2 Ex: 12 to 48 VDC

ODW-710-F2 Ex: 10 to 60 VDC

200 mA @ 24 VDC 100 mA @ 48 VDC

ODW-710-F2 Ex: DC

Connect the unit using at least 18 AWG (0.75 mm2) wiring

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PROFIBUS DP (RS-485)

Electrical specification EIA RS-485 / EN 50 170

Data rate 9 600 bit/s, 19.2, 93.75, 187.5, 500 kbit/s, 1.5, 3, 6 and 12 Mbit/s

Data format 8 data bits, even parity, 1 stop bit, 11 bits total

Protocol PROFIBUS DP / EN 50170

Data Rate detection Yes, compliant with EN 50 170

Retiming Ye s

Turn around time In accordance with EN 50 170

Transmission range ≤ 1200 m, depending on data rate and cable type (EIA RS-485)

Settings None, external termination and failsafe biasing

Protection Installation Fault Tolerant (up to ±60 V)

Isolation to Power and Status port

Connection 9-pin D-sub female

Shielded cable Not required

Conductive housing Isolated to all other circuits and housings

6651-2211

Location of Interface ports, LED’s and DIP-switches

ODW-710-F2

LED Indicators(for details see page 15)

FX(Fibre)

(for details

see page 12–13)

DIP-switches accessible under lid (for details see page 16–17)

Status screw terminal

Position Description Product

1 Contact with C when fibre optical

links are in operation 2 Common C 3 Open (no contact with C)

when fibre optical links are

not in operation

marking

PROFIBUS DP (RS-485) D-sub

Position Direction* Description

1 – –

2 – –

3 In/Out RxD/TxD-P

4 Out CNTR-P

5 – DGND

6 Out VP

7 – –

8 In/Out RxD/TxD-N

9 – –

* Direction relative this unit

6651-2211

Power screw terminal

Position Direction* Description Product

marking

1 In Common voltage COM 2 In Voltage A +VA 3 In Voltage B +VB 4 In Common voltage COM

LED Indicators

LED Status Description

PWR

Power

Bus active

CH 2

Channel 2 link status

CH 1

Channel 1 link status

DPR

Receive PROFIBUS DP

Receive fibre link

FL R

Failure link remote

FL L

Failure link local

ON Power is on. Flashing Unit configured as focal point

(DIP-switch S2:3 is ON). OFF Power is off. ON Data rate has been identified and

data frames are being received on

the electrical or optical interface. OFF Data rate has not been identified. ON Fibre link to other unit has been

established at CH 2. Flashing Optical power detected but link to

other unit has not been established

at CH 2. OFF No optical power detected and

no link to other unit has been

established at CH 2. ON Fibre link to other unit has been

established at CH 1. Flashing Optical power detected but link to

other unit has not been established

at CH 1. OFF No optical power detected and

no link to other unit has been

established at CH 1. Flash Data received on the electrical

interface and transmitted out on

the optical interface. OFF No data received on the electrical

interface. Flash Data received on the optical interface

and transmitted out on the electrical

interface. OFF No data received on the optical

interface. ON Remote fibre link failure. A fibre link

is out of operation at any other unit

than this one. Flashing Hardware error or invalid configura-

tion. ON Local fibre link failure. A fibre link is

out of operation at this unit. Flashing Hardware error or invalid configura-

tion.

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DIP-switch settings

Before setting DIP-switches:

Prevent damage to internal electronics from electrostatic discharges (ESD) by discharging your body to a grounding point (e.g. use of wrist strap).

S2S1

S2 DIP-switch

1 2 3 4 5 6 7 8

Multidrop mid unit or redundant ring member.

Multidrop end unit. E.g. the first or last unit in a multidrop network.

Redundant ring master unit. Only one master unit allowed in a ring.

65535 t

interruption in receiving

bit

frames, until inactive BA.

1 2 3 4 5 6 7 8

* See section “About the automatic data rate detection”

on page 25 for a more detailed description.

5 seconds interruption in receiving frames, until inactive BA

10 seconds interruption in receiving frames, until inactive BA

20 seconds interruption in receiving frames, until inactive BA

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S1 DIP-switch

1 2 3 4 5 6 7 8

S2 DIP-switch

1 2 3 4 5 6 7 8

Description

1 faulty frame before data rate seen as unidentified*. S1: No extended retry limit.

2 faulty frames before data rate seen as unidentified*. S1: No extended retry limit.

3 faulty frames before data rate seen as unidentified*. S1: No extended retry limit.

4 faulty frames before data rate seen as unidentified*. S1: No extended retry limit.

5 faulty frames before data rate seen as unidentified*. S1: No extended retry limit.

6 faulty frames before data rate seen as unidentified*. S1: No extended retry limit.

7 faulty frames before data rate seen as unidentified*. S1: No extended retry limit.

8 faulty frames before data rate seen as unidentified*. S1: No extended retry limit.

31 faulty frames before data rate seen as unidentified*. S1: Extended retry limit.

63 faulty frames before data rate seen as unidentified*. S1: Extended retry limit.

127 faulty frames before data rate seen as unidentified*. S1: Extended retry limit.

255 faulty frames before data rate seen as unidentified*. S1: Extended retry limit.

Set status port at local fibre link (FL L) error only.

Factory default

* See section “About the automatic data rate detection” on page 25 for a more detailed description.

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Multidrop configuration

End Unit

S2: 2 ON

PROFIBUS

Master

(PLC)

TX1

RX1

RX2

TX2

PROFIBUS

Slave

TX1

RX1

RX2

TX2

PROFIBUS

Slave

TX1

RX1

RX2

TX2

End Unit

S2: 2 ON

PROFIBUS

Slave

TX1

RX1

RX2

TX2

Prepare the PROFIBUS units

… Configure PROFIBUS network, with master and slaves. Check that the application is

running correctly with the electrical PROFIBUS network.

Note: In an ODW-710-F2 fibre optic network there will be some additional processing delays that do not exist in an electrical bus. It is possible that the PROFIBUS application must be adjusted to accommodate these delays if using many ODW-710-F2 units in a large network.

See page 22 “Calculating system processing delay” for more information on how to determine the overall system delay time.

Prepare the fibre optical network

… The first and last ODW-710-F2 units must be configured as Multidrop end units by

setting DIP-switch S2:2 to the ON position. (End units only have one fibre pair each and must know that this is a fact)

… Connect the fibre pairs between the units. Always connect CH 1 from one unit to

CH 2 on the next unit as shown in the picture above.

… Connect the power supply to all units and verify that all fibre links become active.

(CH 1 and CH 2 LED’s are on, FL L and FL R LED’s are off). … Connect the PROFIBUS master and slaves to the corresponding ODW-710-F2 unit. … The network is now up and running. Data from the PROFIBUS master is received at the ODW-710-F2 electrical port

(as indicated by the DPR LED). The data rate is automatically detected (as indicated by the BA LED) and data bits are retimed according to the determined rate and sent out on the optical fibre at CH 1. The first ODW-710-F2 slave unit receives data at optical fibre CH 2 (as indicated by the FR LED). The data rate is automatically detected (as indicated by the BA LED) and data is sent out on the electrical port. The slave unit also repeats incoming data on CH 2 to the next slave unit. Responses from the PROFIBUS slaves are processed in the same fashion and sent back to the PROFIBUS master in the opposite direction.

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Behavior during optical link failure

RX2

TX2

End Unit

S2: 2 ON

PROFIBUS

Master

TX1

RX1

FL R LED is on

RX2

TX2

CH 1 LED is off

PROFIBUS

Slave

TX1

RX1

FL L LED is on

Faulty

segment

RX2

TX2

CH 2 LED is off

PROFIBUS

Slave

TX1

RX1

FL L LED is on

RX2

TX2

FL R LED is on

End Unit

S2: 2 ON

PROFIBUS

Slave

If an optical fibre segment fails, all communication with units beyond the faulty fibre segment will be lost. To determine witch fibre segment has failed, look at the FL L, CH 1 and CH 2 LED’s as show in the picture above.

TX1

RX1

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Redundant ring configuration

RX2

TX2

Fibre pair used to carry data.

Focal Point

S2: 3 ON

PWR LED Flashing to indicate master

PROFIBUS

Master

TX1

RX1

RX2

TX2

PROFIBUS

Slave

TX1

RX1

RX2

TX2

Redundant fibre pair. Not used under normal operation.

TX1

RX1

PROFIBUS

Slave

RX2

TX2

Ring MemberRing MemberRing Member

PROFIBUS

Slave

TX1

RX1

Prepare the PROFIBUS units

… Configure PROFIBUS network, with master and slaves. Check that the application is

running correctly with the electrical PROFIBUS network. Note: In an ODW-710-F2 fibre optic network there will be some additional processing

delays that do not exist in an electrical bus. It is possible that the PROFIBUS application must be adjusted to accommodate these delays if using many ODW-710-F2 units in a large network.

See page 22 “Calculating system processing delay” for more information on how to determine the overall system delay time.

Prepare the fibre optical network

… One, and only one, of the ODW-710-F2 units must be configured as a ring focal point

by setting DIP-switch S2:3 to the ON position. (The ring focal point acts as a logical

end point in the optical fibre ring, thus forming a bus type of structure) … Connect the fibre pairs between the units. Always connect CH 1 from one unit to

CH 2 on the next unit as shown in the picture above. … Connect the power supply to all units and verify that all fibre links become active.

(CH 1 and CH 2 LED’s are on, FL L and FL R LED’s are off). … Connect the PROFIBUS master and slaves to the corresponding ODW-710-F2 unit. Note: It is not required that the PROFIBUS master is connected to the ODW-710-F2

ring focal point, but it makes sense if one wishes to keep the installation “tidy” and easy to maintain.

… The network is now up and running.

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Data from the PROFIBUS master is received at the ODW-710-F2 electrical port (as indicated by the DPR LED). The data rate is automatically detected (as indicated by the BA LED) and data bits are retimed according to the determined rate and sent out on the optical fibre at CH 1.

The first ODW-710-F2 ring member receives data at optical fibre CH 2 (as indicated by the FR LED). The data rate is automatically detected (as indicated by the BA LED) and data is sent out on the electrical port. The ring member also repeats incoming data on CH 2 out on CH 1 on to the next ring member.

Responses from the PROFIBUS slaves are processed in the same fashion and sent back to the PROFIBUS master in the opposite direction.

Behavior during optical link failure

RX2

TX2

Focal Point

S2: 3 ON

PWR LED Flashing to idicate master

PROFIBUS

Master

(PLC)

TX1

RX1

FL R LED is on

RX2

TX2

Ring Member Ring Member

CH 1 LED is off

PROFIBUS

Slave

TX1

RX1

FL L LED is on

Faulty

segment

CH 2 LED is off

RX2

TX2

PROFIBUS

Slave

TX1

RX1

FL L LED is on

RX2

TX2

Ring Member

FL R LED is on

PROFIBUS

Slave

TX1

RX1

If an optical fibre segment fails, the ODW-710-F2 focal point will switch mode and start sending out data on both optical fibre ports, CH 1 and CH 2, simultaneously.

Responses from the PROFIBUS slaves are sent back to the PROFIBUS master in the opposite direction, as normal.

To determine witch fibre segment has failed, look at the FL L, CH 1 and CH 2 LED’s as show in the picture above.

Note: If a fibre link fails there will be some time before the system reconfigures itself during witch data may be corrupted or lost. See page 23 “Reconfiguration time under faulty condition” for more information on how to determine the system reconfiguration time.

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Calculating system processing delay

Data exchange between a PROFIBUS DP master and slave via ODW-710-F2 fibre optic link will be delayed due to the length of the optical fibre and the signal processing within the ODW-710-F2. The signal processing delay is dependent on the data rate, and the fibre delay is dependent on the total length of the optical fibre. The additional time resulting from the optical fibre and ODW-710-F2 is the Overall system delay.

Delay @ < 1.5 Mbit/s Delay @ 3 to 12 Mbit/s

Optical fibre length delay (typical)

Signal processing, electrical to fibre (max)

Signal processing, fibre to electrical (max)

Signal processing, fibre to fibre (max)

Note t

= 1 / Baud rate (Baud rate in bit/s)

bit

Example

One PROFIBUS DP master and 11 slaves with data rate 12 Mbit/s. 12 ODW-710-F2 units with a total fibre length of 40 km. A data frame sent from the master to a slave at the farthest end of the optical network.

1. Optical fibre length delay: The total optical fibre length delay. 40 x 5 µs = 200 µs

5 µs/km 5 µs/km

1 t

+ 1 µs 9 t

bit

0.3 µs 0.3 µs

1.3 µs 1.3 µs

bit

+ 1 µs

2. Signal processing electrical to fibre: Signal processing delay (ODW-710-F2 units connected to PROFIBUS DP master).

9 t

+ 1 µs= 9 x 0.083 µs + 1 µs x 2 = 1.1 µs

bit

3. Signal processing fibre to electrical: Signal processing delay (ODW-710-F2 units connected to PROFIBUS DP slave).

0.3 µs

4. Signal processing fibre to fibre: The optical repeater delay x Number of optical repeaters (excluding the ODW-710-F2 units connected to PROFIBUS DP master and addressed slave).

(12 – 2) x 1.3 µs = 13 µs.

5. The system delay is calculated by summing the delays in item 1 to 4 above:

200 µs + 1.1 µs + 0.3 µs + 13 µs = 214 µs

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Reconfiguration time under faulty condition

The reconfiguration time is determined by the time it takes to detect a faulty fibre segment plus the time it takes to transport an error status message through to the ODW710-F2 focal point unit. The time to transport an error status message to the focal point unit is dependent on how many units the error status message has to be repeated through and the total fibre length delay.

Delay

Optical fibre length delay (typical)

Error detection 3 µs

Error repeater delay 0.8 µs

During reconfiguration data may be corrupted or lost.

Example

A system with one PROFIBUS DP master, 11slaves, 12 ODW-710-F2 units and a total fibre length of 2 km. The worst-case reconfiguration time would be:

1. Optical fibre length delay: The total optical fibre length delay. 2 x 5 µs = 10 µs

2. Error detection: The time it takes to detect a faulty fibre segment. Always 3 µs.

3. Optical repeaters: The optical repeater delay x Number of optical repeaters (excluding the ODW-710-F2 units connected to PROFIBUS DP master and addressed slave).

(12 – 2) x 0.8 µs = 8 µs.

5 µs/km

4. The reconfiguration time is calculated by summing the delays in item 1 to 3 above:

10 µs + 3 µs + 8 µs = 21 µs

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About the interfaces

Power

The power terminal has two independent inputs, +VA and +VB, allowing redundant power input.

The ODW-710-F2 power supply is galvanically isolated from all other interfaces.

Optical fibre interfaces

ODW-710-F2 uses Small Form Factor Pluggable (SFP) transceivers. This means that a wide range of different fibre transceivers and connectors can be used (see page 12–13).

PROFIBUS DP interface

The PROFIBUS DP interface is a female 9-position D-sub. Pin assignments are compliance with the PROFIBUS standard EN 50 170.

Status port

The status port connects to an internal relay witch may be used to trigger an external alarm if a fault condition occurs. During normal operation pins 1 and 2 are in contact with each other, and pins 2 and 3 are isolated. During an optical link failure, or power failure, pins 1 and 2 are isolated, and pins 2 and 3 are in contact with each other.

Optical link failures can be classified in to two categories, local or remote, as indicated by the FL L and FL R LED’s. A local link failure is when an optical link is down at this particular unit. A remote link failure is when an optical link is down at some other unit.

From the factory, the status port is set to trigger on both types of link failures. However, by setting DIP-switch S1:1 to the ON position, the status port will only trigger when a local link failure has occurred.

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About the automatic data rate detection

ODW-710-F2 automatically detects the data rate by monitoring incoming PROFIBUS data frames on both the electrical and optical interfaces. When the data rate has been established the BA LED will go active.

If no data frames are transmitted for a period of time the automatic data rate detection will restart and the BA LED will go inactive.

The idle time before the automatic data rate detection restarts is set using DIP-switches S2:4 and S2:5. The factory default setting is 5 seconds.

The automatic data rate detection determines the actual data rate by listening for PROFIBUS Start Delimiters (SD1 – SD4) at the beginning of each data frame. If one or more Start Delimiters are lost the automatic data rate detection will rest start.

The number of lost Start Delimiters before the automatic data rate detection restarts is set using DIP-switches S1:2 and S2:6 – S2: 8. The factory default setting is 31 faulty frames (31 lost Start Delimiters).

Note: Start Delimiters can be lost during an electrical or optical disturbance. For example a PROFIBUS slave unit is connected/disconnected or an optical fibre is

disconnected. It is advisable to start of by using the factory default settings and only manipulate them if a problem exists.

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Mounting

CLICK!

This unit should be mounted on 35 mm DIN-rail, which is horizontally mounted inside an apparatus cabinet, or similar.

Snap on mounting, see figure.

Cooling

This unit uses convection cooling. To avoid obstructing the airflow around the unit, use the following spacing rules. Minimum spacing 25 mm (1.0 inch) above /below and 10 mm (0.4 inches) left /right the unit. Spacing is recommended for the use of unit in full operating temperature range and service life.

10 mm *

(0.4 inches)

25 mm

* Spacing (left/right) recommended for

full operating temperature range

Removal

Press down the black support at the top of the unit. See figure.

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25 mm

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Westermo • SE-640 40 Stora Sundby, Sweden

Tel +46 16 42 80 00 Fax +46 16 42 80 01

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For complete contact information, please visit our website at www.westermo.com/contact

REV.G 6651-2211 2014-10 Westermo Teleindustri AB, Sweden – A Beijer Electronics Group Company

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Westermo ODW-710-F2 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual