Westermo ODW-631 User Manual

Download

User Guide

6650-2243

ODW-631

Fibre Optic Modem

Westermo Teleindustri AB

Industrial Converter

Serial RS-485 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

6650-2243

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.

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 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.

6650-2243

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.

Agency approvals and standards compliance

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

Safety EN 60950-1, IT equipment

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.

6650-2243

Declaration of Conformity, ODW-631

Westerm o Teleindustri AB

Declaration of conformity

Org.nr/

Postadress/Postal address

Tel.

Telefax

Postgiro

Bankgiro Corp. identity number Registered office

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

The manufacturer

Westermo Teleindustri AB SE-640 40 Stora Sundby, Sweden

Herewith declares that the product(s)

Type of product Model Art no Industrial fiberoptic repeaters/media

converters

ODW-600 Series

3650-0xxx

is in conformity with the following EC directive(s). No Short name 2004/108/EC Electromagnetic Compatibility (EMC)

References of standards applied for this EC declaration of conformity. No Title Issu e EN 50121-4 Railway applications – Electromagnetic compatibility

– Emission and immunity of the signalling and telecommunications apparatus

2006

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

+A2:2003

EN 61000-6-1 Electromagnetic compatibility – Immunity for

residential environments

2007

EN 61000-6-2 Electromagnetic compatibility – Immunity for

industrial environments

2005

EN 61000-6-3 Electromagnetic compatibility – Emission for

residential environments

2007

EN 61000-6-4 Electromagnetic compatibility – Emission for

industrial environments

2007

The last two digits of the year in which the CE marking was affixed: 09

Pierre Öberg Technical Manager 29th September 2009

6650-2243

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 +70°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-631 UL 94 PC / ABS Flammability class V-1 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

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

6650-2243

Description

This ODW-631 is a fibre optic modem used for point-to-point applications. It acts as a converter between a serial port and a fibre optical link. The maximum distance of the fibre link depends on selected transceiver and fibre type. Distance up to 80 km (50 miles) is available.

The ODW-631 is designed for harsh out-door usage, in industrial, road or railway installations.

Data will be sent transparently over the fibre optical link via the serial interface RS-485.

Converter serial interface – optical fibre. …

Point-to-point communication via fibre optical network. …

Serial interface, synchronous or asynchronous mode. …

LC-2 Multimode LC connectors, 5 km (3.1 miles). …

LC-15 Singlemode LC connectors, 15 km (9.3 miles). …

LC-40 Singlemode LC connectors, 40 km (24.9 miles). …

LC-80 Singlemode LC connectors, 80 km (50 miles). …

Bi-di Multimode LC connectors, 5 km (3.1 miles). …

Bi-di Singlemode LC connectors, 20 km (12.5 miles). …

Bi-di Singlemode LC connectors, 40 km (24.9 miles). …

Bi-di Singlemode LC connectors, 60 km (37.3 miles). …

Designed for harsh environments. …

Redundant DC or AC power supply, 2 kVAC galvanic isolated to other ports. …

Status interface for fault indication. …

Small Form Factor Pluggable (SFP) transceivers. …

4 positions detachable screw terminal. …

RS-485 interface. …

Data rate up to 1.5 Mbit/s. …

2- or 4-wire RS-485. …

Small Form Factor Pluggable (SFP) transceivers. …

6650-2243

STATUS

LED’s

Switches

CH 1

SFP Fibre transceive

Internal Electronics

ODW- 631

COM

+VA

O V

+VB

POWER

T/R

RS -485

+5V 0V

O C

V P

Functional description

OVP Over Voltage Protection

OCP Over Current Protection

Converter serial interface – optical fibre

ODW-631 is a fibre optic modem that converts between electrical RS-485 and a fibre optic link.

ODW-631 can also be used to convert from RS-232 to RS-485 by using one ODW-621 and one ODW-631.

Data rate up to 1.5 Mbit/s

ODW-631 converts data using rates from 300 bit/s up to 1.5 Mbit/s.

6650-2243

Point-to-point communication via fibre optical network

POWER CH 1

COM +VA +VB COM

POWER CH 1

COM +VA +VB COMTX RX TX RX

POWER CH 1

COM +VA +VB COM

POWER CH 1

COM +VA +VB COM

TX/ RX

The serial data is transferred via a fibre optic network between two ODW-631s. This application 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 between two units depends on selected fibre transceiver and fibre type. Distance up to 80 km (50 miles) are available.

Fibre optical connection at point-to-point communication

Fibre optical connection at point-to-point communication (Bi-di transceiver)

Note! The bi-di transceivers must always be used in pair, see example:

TX 1310 nm RX 1310 nm

RX 1550 nm TX 1550 nm

Serial data transfer can be set in two modes:

Bi-di transceiver, TX 1310 nm, RX 1550 nm.

Bi-di transceiver, TX 1550 nm, RX 1310 nm.

Syncronous mode: Transfer special protocols such as Manchester coded protocol. … See special switch settings on page 22.

Asyncronous mode: Data will be sent over the fibre optic network when a start-bit has … been identified. The data rate and number of data bits should be set by DIP-switches. The turning time (from sending serial RS-485 data until changing to receive mode) is automatically calculated from the DIP-switch setting.

6650-2243

Optical fibre link functionality and status indication

At power on, all LED’s will be active during an initiation sequence followed by an automatic initiation of the optical fibre link. The alarm will be set until the fibre optic link is in operation and ready to transfer serial data. Data can be transferred over the fibre optic link as long as the link is in operation.

When the fibre optic link is out of operation this will be indicated by a local alarm output. When the link returns to operation, the alarm will reset automatically.

RS-485 interface

A 4 position detachable screw terminal that can handle full duplex data rates up to

1.5 Mbit/s and can be set to either 2- or 4-wire RS-485 system. When 4-wire RS-485 is selected, the terminals T/R+ and T/R– will always be set to

transmit and terminals R+ and R– will always receive data. Manchester coded protocol can be transferred with synchronous mode.

Redundant power supply, galvanic isolated (2 kVAC) to other ports

The ODW-631 should be supplied with safety extra low voltage (SELV). It is designed to operate permanently over a wide DC or AC voltage input range and provided with two independent inputs for enhanced redundancy if either supply fails.

Single- or multimode LC fibre connectors

The ODW-631 uses Small Form Factor Pluggable (SFP) transceivers that are in compliance with Multi-Sourcing Agreement (MSA). A wide range of different fibre transceivers and connectors can be used.

Status interface

This port enables supervision of fibre optic link status by a relay with both normally open and closed contacts.

The status will be set if:

• Local or remote of fibre link errors exist.

• The unit is out of service, e.g. no power supply.

Designed for harsh environments, such as industrial, road and railway applications

The ODW-631 complies with standards for industrial environments, railway signalling and telecommunications apparatus. Additionally the wide temperature range permits it to be installed in out-door cabinets without any additional measures, such as heating, etc.

6650-2243

System delay in an optical network

Serial data transferred from one ODW-631 via an optical network to a second one, will be delayed due to the length of optical fibre and the signal processing within the units. The signal processing delay is dependent on the data rate and conversions, and the fibre delay is dependent on the total length of the optical fibre.

Item Functions Delay

1 Fibre:

Optical fibre length delay (typical)

2 Converter electrical to fibre:

Signal processing

3 Converter fibre to electrical:

Signal processing

Note t

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

bit

5 ms/km

0.6 ms (synchronous mode) 1 t

+ 0.6 ms

Bit

(asynchronous mode)

0.6 ms

The system delay when transferring data from the serial input at one ODW-631 to the serial output of other one is calculated by adding the following:

1. Fibre: The optical fibre length delay.

2. Converter electrical to fibre: Signal processing delay.

3. Converter fibre to electrical: Signal processing delay.

Example 1: Synchronous data data transfer from one ODW-631 to a second

converter with a total fibre length of 25 km. Data rate of 9 600 bit/s.

1. Fibre: The total optical fibre length delay 25 * 5 ms = 125 ms.

2. Converter electrical to fibre: Signal processing delay 1 t

+ 0.6 ms = 105 ms + 1.0 ms

bit

= 106 ms.

3. Converter fibre to electrical: Signal processing delay = 0.6 ms.

4. The system delay is calculated by adding the delays in items 1 to 3 above = 232 ms

Example 2: Synchronous data transfer from one ODW-631 to a second converter

with a total fibre length of 25 km. Data rate of 9 600 bit/s.

5. Fibre: The total optical fibre length delay 25 * 5 ms = 125 ms.

6. Converter electrical to fibre: Signal processing delay = 0.6 ms.

7. Converter fibre to electrical: Signal processing delay = 0.6 ms.

8. The system delay is calculated by adding the delays in item 1 to 3 above = 126 ms

6650-2243

Interface specifications

Power

Rated voltage ODW-631: 12 to 48 VDC and 24 VAC

Operating voltage ODW-631: 10 to 60 VDC and 20 to 30 VAC

Rated current 300 mA @ 12 V

Rated frequency ODW-631: DC and 48 to 62 Hz

Inrush current I²t 0.2 A²s Startup current* 1.0 Apeak Polarity Reverse polarity protected Redundant power input Yes Isolation to RS-422/485 and Status port Connection Detachable screw terminal Connector size 0.2 – 2.5 mm² (AWG 24 – 12) Shielded cable Not required

* External supply current capability for proper startup

RS-422/485

Electrical specification EIA RS-485, 2-wire or 4-wire twisted pair Data rate 300 bit/s – 1.5 Mbit/s Data format 9 – 12 bits Protocol Start-bit followed by 8-11 bits Retiming Yes Turning time (2-wire RS-485) Transmission range < 1200 m, depending on data rate and cable type (EIA RS-485) Settings 120 W termination and failsafe biasing 680 W Protection Installation Fault Tolerant (up to ±60 V) Isolation to Status and Power port Connection Detachable screw terminal Connector size 0.2 – 2.5 mm² (AWG 24 – 12) Shielded cable Not required

ODW-631 Ex: 12 to 48 VDC

ODW-631 Ex: 10 to 60 VDC

150 mA @ 24 V 75 mA @ 48 V

ODW-631 Ex: DC

One t

bit

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

bit

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 Serial port and Power port Connection Detachable screw terminal Connector size 0.2 – 2.5 mm² (AWG 24 – 12) Shielded cable Not required

6650-2243

Optical Power Budget

The allowed link length is calculated from the optical power budget (OPB), the available optical power for a fibre-optic link, and the attenuation of the fibre, comprising losses due to in-line connectors, splices, optical switches and a margin for link ageing (typical 1.5 dB for 1300 nm).

The worst-case optical power budget (OPB) in dB for a fibre-optic link is determined by the difference between the transmitter’s output optical power (min) and the receiver input sensitivity (max).

FX (Fibre) SM-LC80 SM-LC40 SM-LC15 MM-LC2

Fibre connector LC duplex LC duplex LC duplex LC duplex Fibre type Singlemode

9/125 mm

Singlemode

9/125 mm

Singlemode

9/125 mm

Multimode,

62.5/125 and 50/125 mm

Wavelength nm 1550 1310 1310 1310 Transmitter

–5/0 dBm** –5/0 dBm** –15/–8 dBm** –20/–14 dBm* Output optical power min/max Receiver

–34 dBm –34 dBm –31 dBm –31 dBm Input sensitivity, max Receiver

–5 dBm*** –3 dBm*** –8 dBm –8 dBm Input optical power, max Optical power budget,

29 dB 29 dB 16 dB 11 dB worst-case Transceiver type Small Form Factor Pluggable (SFP)

Multi-Sourcing Agreement (MSA) compliant

Laser class Class 1, IEC 825-1 Accessible Emission Limit (AEL)

FX (Fibre)

Bi-di

LC-60

Bi-di

LC-40

Bi-di

LC-20

Bi-di

MM LC-2

Fibre connector LC Simplex LC Simplex LC Simplex LC Simplex Fibre type Singlemode

9/125 µm

Singlemode 9/125 µm

Multimode

62.5/125 and

50/125 µm Wavelength nm, connector 1 Wavelength nm, connector 2

Transmitter

Tx 1310, rx 1550 Tx 1550, rx 1310

Tx1310, rx 1550 TX 1550, rx 1310

Tx 1310, rx

1550 Tx 1550,

rx 1310

–5/0 dBm ** –8/0 dBm ** -10/0 dBm ** –10/–8 dBm * Output optical power min/max Receiver

–34 dBm –34 dBm –28 dBm –28 dBm Input sensitivity, max Receiver

0 dBm*** 0 dBm*** 0 dBm –0 dBm Input optical power, max Optical power budget,

29 dB 26 dB 18 dB 18 dB worst-case Transceiver type Small Form Factor Pluggable (SFP)

Multi-Sourcing Agreement (MSA) compliant Laser class Class 1, IEC 825-1 Accessible Emission Limit (AEL)

* Output power is power coupled into a 62.5/125 mm multimode fibre ** Output power is power coupled into a 9/125 mm singlemode fibre *** The optical power should be reduced by at least 5 dB (SM-LC80 and Bi-di LC-60) or 3dB (SM-LC-40

and Bi-di LC-40) between the optical output and input.

6650-2243

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

ODW-631

DIP-switches accessible under lid

LED Indicators

(for details

see page 19)

(for details see page 20-22)

Status screw terminal

Position Direction Description Product

1 NO Contact with C

2 C Common C 3 NC Open (no con-

FX(Fibre)

(for details

see page 17)

Power screw terminal

Position Direction* Description Product

1 In Common

2 In Voltage A +VA 3 In Voltage B +VB 4 In Common

RS-422/485 screw terminal

marking

NO when fibre optical links are in operation

NC tact with C) when fibre optical links are in operation

marking

COM

voltage

COM

voltage

Position Direction* Description Product marking

1 In R+ (EIA RS-485 A’) R+

2 In R– (EIA RS-485 B’) R–

3 In/Out T+ (EIA RS-485 A) T/R+

4 In/Out T– (EIA RS-485 B) T/R–

* Direction relative this unit

6650-2243

LED indicators

LED Status Description

PWR

Power

RDR OFF Not used

CH 2 OFF Not used

CH 1 ON Fibre link at port CH 1 in operation.

Serial data Receive

Fibre link data Receive

FL R (Red)

Failure Link Remote

FL L (Red)

Failure Link Local

ON In service (power)

Flashing Fault condition

OFF Out of service

Data can be transmitted

OFF Fibre link at port CH 1 out of operation

Flashing Receive accepted data on the serial port.

Data will be transmitted to the fibre link

OFF –

Flashing Receive data on the fibre link. This frame

is transmitted to the serial port

OFF –

ON Remote fibre link failure. A fibre link is

out of operation at any other unit of the optical network

OFF All fibre links are in operation at all

other units in the fibre optical network

ON Local fibre link failure. This unit has

identified a fibre link failure

OFF Fibre link of this unit is in operation

6650-2243

Configuration

All needed configurations and parameter settings are done by the DIP-switches, located under the top lid of the ODW-631.

S2S1

DIP-switch settings

Before DIP-switch settings:

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

Note: Disconnect power before DIP-switch settings.

S1 DIP-switch, asynchronous mode

1 2 3 4 5 6 7 8

RS-485 2-wire

RS-485 4-wire

300 bit/s

1 200 bit/s

2 400 bit/s

4 800 bit/s

9 600 bit/s

19.2 kbit/s

38.4 kbit/s

1 2 3 4 5 6 7 8

57.6 kbit/s

115.2 kbit/s

125 kbit/s

187.5 kbit/s

230.4 kbit/s

250 kbit/s

500 kbit/s

1.0 Mbit/s

1.5 Mbit/s

6650-2243

S1 DIP-switch

1 2 3 4 5 6 7 8

9 bits data format

10 bits data format

1 2 3 4 5 6 7 8

11 bits data format

12 bits data format

S2 DIP-switch

1 2 3 4 5 6 7 8

Protocol Asynchronous mode, with start-bit control

Synchronous mode (see table on next page)

* SW 2:6 ON: The status relay only change status in the unit that is connected to the receive side.

1 2 3 4 5 6 7 8

Set status port at local fibre link error*

S3 DIP-switch

No termination and fail-safe

1 2 3 4

Termination with fail-safe (4-wire)

1 2 3 4

Termination with fail-safe (2-wire)

1 2 3 4

Factory settings

1 2 3 4 5 6 7 8

1 2 3 4

Supervision table when selecting data format

Start bit … … … … … … … …

7 bit … … … …

8 bit … … … …

Parity … … … …

1 stop bit … … … …

2 stop bit … … … …

Number of bit 9 10 10 10 11 11 11 12

6650-2243

Synchronous mode ODW-631

RS-485 transmitter on-time after last data transition

SW:1 SW:2

1 2 3 4 5 6 7 8

Transmitter

1.6 ms

416 µs

208 µs

104 µs

52 µs

26 µs

13 µs

8.6 µs

4.3 µs

SW:1 SW:2

1 2 3 4 5 6 7 8

Transmitter

2.6 µs

2.1 µs

2 µs

1 µs

500 ns

300 ns

Example:

The data speed in a particular application is 250 kbit/s.

Calculate the maximum data transition time: 1/250 x 103 = 4 x 10

Using dip-switches 1:3 – 1:6, set the transmitter on time to the closest higher value, e.i. 4.3 µs.

= 4 µs.

1 2 3 4 5 6 7 8

4 µs

Note: Selecting a transmitter on time that is shorter than the data transition time will result in corrupted data.

6650-2243

RS-485 termination at system level

=Termination

DW-631

Slave unit Slave unit Slave unit

DW-631

Slave unit Slave unit Slave unit

Max 0.3 metre

=Termination

T/R+

T/R–

T/R+T/R– T/R+T/R– T/R+T/R–

R+

R–

T+

T–

R– R+ R+T– T– R– R+ T– T+T+T+ R–

The system should be installed in according to the RS-485 specification. A system should always form a bus structure where the termination is at the end points of the bus. See diagrams for details of how this is done with RS-485 2-wire and 4-wire.

6650-2243

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.

25 mm

6650-2243

POWER CH 1

COM +VA +VB COM

POWER CH 1

COM +VA +VB COMTX RX TX RX

Start up guide, point-to-point application

Follow the steps below to get the unit up and running in a simple application.

Master Slave

Configure the ODW-631. …

S1: 2-wire RS-485. Data rate, asynchronous mode must be set by S1. …

S2: Asynchronous mode or Synchronous mode. …

S3: Termination and fail-safe of the RS-422/485 port. …

Connect the fibre link between the ODW-631s. …

Connect the power supply to both ODW-631s. …

After a few seconds the fibre link should be in operation, indicated by an active CH1 … LED.

Connect the serial cables from PLC master and slave to respective ODW-631s. …

Frames from PLC master that are correctly received in the ODW-631 will be … indicated by flashing TD LED.

Frames that are received via the fibre link will be transmitted to the PLC slave … and indicated by flashing RD LED.

Replies from slave to master will be transferred and indicated in the opposite way. …

The point-to-point application is up and running. …

6650-2243

Hints

If the distance is too long, it may be necessary to adjust the timing of the sender of the frame to allow acknowledgement of the received frame, during configuration of the PLC master.

Ensure that the correct protocol dependent configuration has been selected. Flashing of the TD LED indicates that a start-bit has been identified.

The definition of positive and negative T/R+, T/R– and R+, R– can differ between this ODW-631 and other units so it can be helpful to reverse the connection of + and –.

Westermo Teleindustri AB • SE-640 40 Stora Sundby, Sweden

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

E-mail: info@westermo.com

www.westermo.com

Sweden

Westermo Data Communications AB Svalgången 1, Vallbyinstitutet, 724 81 Västerås, Sweden Tel: 021 548 08 00, Fax: 021 35 18 50 info.sverige@westermo.se • www.westermo.se

United Kingdom

Westermo Data Communications Ltd Talisman Business Centre Duncan Road, Park Gate, Southampton. SO31 7GA Phone: +44(0)1489 580 585, Fax: +44(0)1489 580 586 sales@westermo.co.uk • www.westermo.co.uk

Germany

Westermo Data Communications GmbH, Goethe Strasse 67 DE-68753 Waghäusel, Germany Tel: +49(0)7254 95400-0, Fax: +49(0)7254-95400-9 info@westermo.de • www.westermo.de

France

Westermo Data Communications S.A.R.L. Bat. A, 9 Chemin de Chilly FR-91160 Champlan, France Tél : +33 1 69 10 21 00, Fax : +33 1 69 10 21 01 infos@westermo.fr • www.westermo.fr

Sales Units

Singapore

Westermo Data Communications Pte Ltd 2 Soon Wing Road #08-05, Soon Wing Industrial Building Singapore 347893 Phone +65 6743 9801 • Fax +65 6745 0670 sales@westermo.com.sg • www.westermo.com.sg

North America

Westermo Data Communications, Inc 939 N. Plum Grove Road, Suite F, IL 60173 Schaumburg, USA Phone: +1 847 619 6068 • Fax: +1 847 619 66 74 info@westermo.com • www.westermo.com

Taiwan

Westermo Data Communications Co F2, No. 188, Pao-Chiao Rd. Shing-Tien City, Taipei 23145 Phone:+886 2 8911 1710 sales.cn@westermo.com • cn.westermo.com

Westermo Teleindustri AB have distributors in several countries, contact us for further information.

REV.B 6650-2243 2012-01 Westermo Teleindustri AB, Sweden – A Beijer Electronics Group Company

Westermo ODW-631 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual