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
2
6650-2253
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.
6650-2253
3
4
6650-2253
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.
EN 50121-4, Railway signalling and telecommunications apparatus
IEC 62236-4, Railway signalling and telecommunications apparatus
SafetyEN 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.
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
6
6650-2253
Type tests and environmental conditions
Electromagnetic Compatibility
PhenomenaTestDescriptionLevel
ESDEN 61000-4-2Enclosure contact ± 6 kV
RF field AM modulated IEC 61000-4-3Enclosure10 V/m 80% AM (1 kHz), 80 – 800 MHz
RF field 900 MHzENV 50204Enclosure20 V/m pulse modulated 200 Hz, 900 ± 5 MHz
Fast transientEN 61000-4-4Signal ports± 2 kV
SurgeEN 61000-4-5Signal ports unbalanced ± 2 kV line to earth, ± 2 kV line to line
RF conductedEN 61000-4-6Signal ports10 V 80% AM (1 kHz), 0.15 – 80 MHz
Pulse Magnetic fieldEN 61000-4-9Enclosure300 A/m, 6.4 / 16 µs pulse
Voltage dips
and interruption
Mains freq. 50 HzEN 61000-4-16Signal ports100 V 50 Hz line to earth
Mains freq. 50 HzSS 436 15 03Signal ports250 V 50 Hz line to line
Radiated emission EN 55022EnclosureClass B
Conducted emissionEN 55022AC power portsClass B
Dielectric strengthEN 60950Signal port to all other
Environmental
TemperatureOperating–40 to +60°C
HumidityOperating5 to 95% relative humidity
AltitudeOperating2 000 m / 70 kPa
Service lifeOperating10 year
VibrationIEC 60068-2-6Operating7.5 mm, 5 – 8 Hz
ShockIEC 60068-2-27 Operating15 g, 11 ms
Packaging
Enclosure, ODW-632UL 94PC / ABSFlammability class V-1
Dimension W x H x D35 x 121 x 119 mm
Weight0.26 kg
Degree of protectionIP 21
CoolingIEC 529EnclosureConvection
MountingHorizontal on 35 mm DIN-rail
EN 61000-4-11AC power ports10 & 5 000 ms, interruption
FCC part 15Class A
FCC part 15AC power portsClass B
EN 55022DC power portsClass 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 ports10 V 80% AM (1 kHz), 0.15 – 80 MHz
200 ms, 40% residual voltage
500 ms, 70% residual voltage
This ODW-632 is a fibre optic modem used for redundant ring and multidrop 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-632 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-422/485.
Converter serial interface – optical fibre. …
Redundant ring alternatively multidrop communication via fibre optical network. …
Serial interface Asynchronous or Synchronous 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 (3.1miles). …
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). …
Design for harsh environments. …
Re-timing. …
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. …
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6650-2253
STATUS
C
NO
NC
LED’s
Switches
CH 2
SFP
Fibre transceive
r
TX
RX
CH 1
SFP
Fibre transceive
r
TX
RX
Internal
Electronics
ODW- 632
COM
COM
+VA
O
V
P
+VB
POWER
T/R
-
+
RS -485
R
-
+
+5V 0V
+5V 0V
O
C
P
O
V
P
Functional description
OVP Over Voltage Protection
OCP Over Current Protection
Converter serial interface – optical fibre
ODW-632 is a fibre optic modem that converts between electrical RS-485 and a fibre
optical link.
ODW-632 can also be used to convert from RS-232 to RS-485 by using a
ODW-622 in the same link as ODW-632.
Repeater – optical fibre links
ODW-632 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 1.5 Mbit/s
ODW-632 converts data using rates from 300 bit/s up to 1.5 Mbit/s. Retiming of the data
ensures that the correct signal form is transmitted from the ODW-632 converter.
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6650-2253
Designed for harsh environments, such as industrial,
TX RXTX RXTX RXTX RXTX RXTX RXTX RXTX RX
Master, unitSlave, unit
CH 2CH 1CH 2CH 1CH 2CH 1CH 2CH 1
Ring A
Ring B
MS
PLCPLC
road and railway applications
ODW-632 complies with standards for industrial environments and railway signalling and
telecommunications apparatus. Additionally, the wide climatic range of the ODW-632
allows it to be installed in out-door cabinets without any additional measures, such as
heating, etc.
Redundant ring via fibre optical network
Under normal operation the serial data is sent over ring A. Should a fault be detected on
the fibre ring then the data will be carried on rings A and B.
Ring A
Ring ARing ARing A
Ring BRing BRing B
Ring B
Note! Ring A start up at TX (channel 1) and ring B ends up at RX (channel 1).
… Normal operation, data exchange between serial master and slave.
• ODW-632 unit connected to the PLC-master receives serial data at the electrical
port, it converts and transfers this master frame via the fibre ring A. At this unit the
repeating of transferred frames is stopped until this transferred master frame has
returned via ring A.
This master frame will be repeated through fibre ring A by all the other units. Each
of these units will also convert the master frame to serial data and send it via the
electrical port.
• ODW-632 unit to which the addressed Slave is connected, receives serial data from
the Slave. This unit converts slave data and transfers the slave frame via ring A.
The repeating of transferred frames is stopped until this transferred slave frame has
returned via ring A.
• When the “first” ODW-632 unit receives the master frame (the same frame that has
been transmitted by this unit), or after a timeout, data conversion at will be allowed
again. The received slave frame will be converted and transmitted at the electrical
port.
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6650-2253
• When the ODW-632 unit connected to the PLC slave receives the slave frame (the
same frame that has been transmitted by this unit), or after a timeout, data conversion at this unit will be allowed again.
… Behaviour under faulty conditions
• Elapsed time from any kind of failure at the fibre optic network until data exchange
after a corrective action depends on total length of fibre ring.
This is typically 40–500 ms (local unit). During that time, the transferred data frames
should be seen as corrupted or missed.
Note: Be ware of that full duplex will not work in redundant ring.
FailureIndications
Fibre interruption ring A, TXOn: FL R
Fibre interruption ring A, RXOn: FL L
Fibre interruption ring A, RX & TXOn FL L
Fibre interruption ring B, TXOn: FL R
Fibre interruption ring B, RXOn: FL L
Fibre interruption ring B, RX & TXOn: FL L
Fibre interruption ring A and B (e.g. CH1 or CH2 both TX & RX)On: FL L &/or FL R
Low power on the receiver
(May indicate bad fibre)
* Regarding functionality see chapter “multidrop application”
FLL flicker
… Recovery from faulty status
• ODW-632 will automatically recover to the previous operating status when a failure
disappears. This involves recovery from multi drop application to Redundant ring A/B
when ring is up and running and recovery from Ring B to Redundant ring A when
the ring is up and running.
• The time to recover from the failure status depends on total length of fibre ring.
This is typically 40–500 ms. During that time the transferred data frames should be
seen as corrupted or missed.
Serial data transfer can be set in two modes:
Synchronous mode: Transfer special protocols such as Manchester coded protocol.
See special switch settings on page 25.
Asynchronous mode: Data will be sent over the fibre optic network when a startbit
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.
11
6650-2253
Multidrop via fibre optical network
TX RXTX RXTX RXTX RXTX RXTX RXTX RXTX RX
CH 2CH 1CH 2CH 1
Master, unit
M
Slave, unit
S
CH 2CH 1CH 2CH 1
PLCPLC
The data is transferred via the fibre optic network to the serial ports of all units. If
ODW-632 is connected to two optical fibre links (mid unit) converted data will be transmitted in both directions, via both CH 1 and CH 2. With only one optical fibre link (end
unit) converted data will be transmitted in one direction, via CH 1 only. Data received
from one ODW-632 optical fibre port will be repeated through the other optical fibre
port and it will also convert the frame to serial data.
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6650-2253
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 links. The alarm will be set until the fibre optical links
are in operation and ready to transfer serial data.
Data frames are transferred over the fibre optic links as long as the links are in operation
and the data rate has been detected.
When any of the fibre optic links is out of operation, this will be indicated by a local
alarm, and this will set the alarm output. It will also send a remote alarm via the other
link, if possible. When the link returns to operations mode, 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
ODW-632 should be supplied with safety extra low voltage (SELV). It is designed to
operate permanently over a wide input range and provided with two independent inputs,
allowing redundancy should either supply fail.
Single- or multimode LC fibre connectors
ODW-632 use Small Form Factor Pluggable (SFP) transceivers that are in compliance
with the Multi-Sourcing Agreement (MSA). This means that 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.
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6650-2253
System delay in an optical network
Data exchange between a serial master and slave via ODW-632 fibre optic link, will be
delayed due to the length of the optical fibre and the signal processing within the ODW-
632. The signal processing delay is dependent on the data rate, and the fibre delay is
dependent on the total length of the optical fibre.
There is no limitation of the total length of optical fibre for Multi-drop applications. In
Redundant ring applications the data transfer time in a ring is limited to 10 milliseconds.
This means the total length of the optical fibre ring is about 2 000 km, excluding the
1 microsecond delay at each optical repeater unit.
The additional time resulting from the optical fibre and ODW-632 is the Overall system
delay. The Redundant ring and Multidrop application Overall system delays differ, see
below.
Item FunctionsDelay
1Fibre:
Optical fibre length delay (typical)
2Converter electrical to fibre:
Signal processing
3Converter fibre to electrical:
Signal processing
Note t
… Redundant ring, one data exchange.
= 1 / Baud rate (Baud rate in bit/s)
bit
• The data exchange between master and slave via ODW-632 fibre optic link will run one direction through all units of the ring. The system delay is calculated by summing the following:
1. Fibre: The total optical fibre ring length delay.
2. Optical repeaters: The optical repeater delay x Number of optical repeaters (excluding the
ODW-632 units connected to a master and addressed slave).
3. Converter electrical to fibre: Signal processing delay x 2
(ODW-632 units connected to serial master and addressed slave).
4. Converter fibre to electrical: Signal processing delay x 2 (ODW-632 units connected
to a master and addressed slave).
5 ms/km
0.6 ms (synchronous mode)
1 t
+ 0.6 ms
Bit
(asynchronous mode)
0.6 ms
Multi drop, one data exchange.
• The data exchange between a master and slave via ODW-632 fibre optic link will run from
the ODW-632 units connected to a master to the slave and the same way back to the master.
The system delay is calculated by summing the following:
1. Fibre: The optical fibre length a master to addressed slave delay x 2.
2. Optical repeaters: The optical repeater delay * Number of optical repeaters
(excluding the ODW-632 units connected to a master and addressed slave) x 2.
3. Converter electrical to fibre: Signal processing delay x 2
(ODW-632 units connected to a master and addressed slave).
4. Converter fibre to electrical: Signal processing delay x 2
(ODW-632 units connected to a master and addressed slave).
14
6650-2253
Example
• Redundant ring, one data exchange between master and one slave.
One a master and 11 slaves with data rate 9600 bit/s dependent mode. 12 ODW-632 units
with a total fibre length of 40 km. A data exchange between master and one slave.
1. Fibre: The total optical fibre ring length delay.
40 x 5 µs = 200 µs
2. Optical repeaters:
The optical repeater delay x Number of optical repeaters
(excluded the two units connected to PLC master and slave).
10 x 3.0 µs = 30 µs
3. Converter electrical to fibre:
Signal processing delay x 2
(ODW-632 units connected to a master and addressed slave).
(1 t
+ 0.6 µs) x 2 = (105 µs + 0.6 µs) x2 = 211 µs
bit
4. Converter fibre to electrical:
Signal processing delay x 2
(units connected to PLC master and slave).
0.6 µs x 2 = 1.2 µs
5. The system delay is calculated by summing the delays in item 1 to 4 above:
200 µs + 30 µs + 211 µs + 1.2 µs = 442 µs
15
6650-2253
Interface specifications
Power
Rated voltageODW-632: 12 to 48 VDC and 24 VAC
Operating voltageODW-632: 10 to 60 VDC and 20 to 30 VAC
Rated current400 mA @ 12 V
Rated frequencyODW-632: DC and 48 to 62 Hz
Inrush current I²t0.2 A²s
Startup current*1.0 Apeak
PolarityReverse polarity protected
Redundant power inputYes
Isolation toRS-422/485 and Status port
ConnectionDetachable screw terminal
Connector size0.2 – 2.5 mm² (AWG 24 – 12)
Shielded cableNot required
* External supply current capability for proper startup
RS-422/485
Electrical specificationEIA RS-485, 2-wire or 4-wire twisted pair
Data rate300 bit/s – 1.5 Mbit/s
Data format9 – 12 bits
ProtocolStart-bit followed by 8-11 bits
RetimingYes
Turning time
(2-wire RS-485)
Transmission range< 1200 m, depending on data rate and cable type (EIA RS-485)
Settings120 W termination and failsafe biasing 680 W
ProtectionInstallation Fault Tolerant (up to ±60 V)
Isolation toStatus and Power port
ConnectionDetachable screw terminal
Connector size0.2 – 2.5 mm² (AWG 24 – 12)
Shielded cableNot required
ODW-632 Ex: 12 to 48 VDC
ODW-632 Ex: 10 to 60 VDC
250 mA @ 24 V
100 mA @ 48 V
ODW-632 Ex: DC
One t
bit
t
= 1 / Baud rate (Baud rate in bit/s)
bit
Status
Port typeSignal relay, changeover contacts
Rated voltageUp to 48 VDC
Operating voltageUp to 60 VDC
Contact rating500 mA @ 48 VDC
Contact resistance< 50 mW
Isolation toRS-422/485 and Power port
ConnectionDetachable screw terminal
Connector size0.2 – 2.5 mm2 (AWG 24 – 12)
Shielded cableNot required
16
6650-2253
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).
* 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.
17
6650-2253
Location of Interface ports, LED’s and DIP-switches
ODW-632
LED Indicators(for details see page 22)
FX(Fibre)
(for details
see page 20)
DIP-switches accessible under lid
(for details see page 23-25)
Flashing Receive accepted data on the serial port.
Data will be transmitted to the fibre link
OFF–
Flashing Received data on the fibre link. This
frame is transmitted to the serial port.
OFF–
ONRemote fibre link failure. A fibre link is
out of operation at any other unit of the
optical network
OFFAll fibre links are in operation at all
other units in the fibre optical network
ONLocal fibre link failure. This unit has
identified a fibre link failure
OFFFibre link of this unit is in operation
19
6650-2253
Configuration
!
All needed configurations and parameter settings are done by the DIP-switches, located
under the top lid of the ODW-632.
S2S1
S3
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
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
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
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
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
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6650-2253
S1 DIP-switch
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
9 bits data format
10 bits data format
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
11 bits data format
12 bits data format
S2 DIP-switch
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
Multidrop- end unit
(Use channel 1 for end unit)
Multidrop, Mid unit .
Redundant ring
* SW 2:6 ON: The status relay only change status in the unit that is connected to the receive side.
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
Set status interface at local fibre
link error*
Synchronous mode
(see table on next page)
S3 DIP-switch
ON
No termination and fail-safe
1 2 3 4
ON
Termination with fail-safe (4-wire)
1 2 3 4
ON
Termination with fail-safe (2-wire)
1 2 3 4
Factory settings
ON
S1
1 2 3 4 5 6 7 8
Supervision table when selecting data format
Start bit……………………
7 bit…………
8 bit…………
Parity…………
1 stop bit…………
2 stop bit…………
Number of bit910 10 1011 11 1112
ON
S2
1 2 3 4 5 6 7 8
ON
S3
1 2 3 4
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6650-2253
Synchronous mode ODW-632
RS-485 transmitter on-time after last data transition
SW:1SW:2
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
Transmitter
ON
1.6 ms
416 µs
208 µs
104 µs
52 µs
26 µs
13 µs
8.6 µs
4.3 µs
SW:1SW:2
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
Transmitter
ON
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.
-
6
= 4 µs.
ON
1 2 3 4 5 6 7 8
ON
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.
22
6650-2253
RS-485 termination at system level
=Termination
O
DW-632
Slave unitSlave unitSlave unit
O
DW-632
Slave unitSlave unitSlave 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.
23
6650-2253
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
24
6650-2253
Start up guide, redundant ring application
Ring A
Ring B
TX RXTX RXTX RXTX RXTX RXTX RXTX RXTX RX
CH 2CH 1CH 2CH 1CH 2CH 1CH 2CH 1
PLC
Slave
PLC
Master
PLC
Slave
PLC
Slave
Follow the steps below to get the unit up and running in a simple application.
Ring A
Ring A
Ring A
Ring A
Ring B
Ring B
Ring B
Ring B
Prepare the master units
Configure network, with master and slaves. Check that it is running correctly with the …
electrical serial network.
Prepare the fibre optical network.
Redundant ring. Set switch S2:1 and 3 to ON and all others to OFF, at all units. …
(If the status interface should be local, set S2:6 to ON)
Set present data rate with S1 …
Connect the fibre links between the units. …
Connect the power supply to all units. …
• The Fibre links should be in operation, indicated by active CH 1 and CH 2 LED’s.
Connect each of the slaves to the port of corresponding ODW-632. …
Connect the master to the port of one ODW-632. …
The Redundant ring application is up and running. …
25
6650-2253
Multidrop application
TX RXTX RXTX RXTX RXTX RXTX RXTX RXTX RX
CH 2CH 1CH 2CH 1CH 2CH 1CH 2CH 1
PLC
Slave
PLC
Master
PLC
Slave
PLC
Slave
Follow the steps below to get the unit up and running in a simple application.
Prepare the units
Configure the network, with master and slaves. Check that it is running correctly with …
the electrical serial network.
Prepare the fibre optical network
Multidrop, mid units (CH 1 & CH 2). Set switch S2:1 and 2 to ON. …
Multidrop, end units (CH 1 only). All switches should be set to OFF if it is …
protocol independent and Switch S2: 1 to ON if it is protocol dependent.
Connect the fibre links between the units. …
Connect the power supply to all units. …
• The Fibre links should be in operation, indicated by active CH 1 and CH 2 LED’s.
Connect each of the slaves to the serial port of the corresponding ODW-632. …
Connect the master to the port of one ODW-632 …
The Multidrop application is up and running. …
Note! ODW-621 or ODW-631 can be used as end units.
26
6650-2253
Start up guide
Note: With Bi-di fibre it is necessary to have one 1310 nm in one end
and 1550 nm in the other end.
• Bi-di 1310 nm will transmit with 1310 nm and resceive with 1550 nm.
• Bi-di 1550 nm will transmitt with 1550 nm and resceive with 1310 nm.
Redundant ring with Bi-di transceivers
Unit 1Unit 2Unit 3
CH2Bi-di 1550 nmBi-di 1550 nmBi-di 1550 nm
CH1Bi-di 1310 nmBi-di 1310 nmBi-di 1310 nm
Point-to-point with Bi-di transceivers
Unit 1Unit 2
CH1Bi-di 1310 nmBi-di 1550 nm
27
6650-2253
Multidrop with Bi-di transceivers
End unit 1Unit 2End unit 3
CH2–Bi-di 1550 nm–
CH1Bi-di 1310 nmBi-di 1310 nmBi-di 1550 nm
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
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 6650-2253 2012-01 Westermo Teleindustri AB, Sweden – A Beijer Electronics Group Company
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