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 address:
www.westermo.com
Software tools
Related software tools are available in the folder software tools under technical support
on the Westermo website.
License and copyright for included Free/Libre Open Source Software
This product includes software developed by third parties, including Free/Libre Open
Source Software (FLOSS). The specific license terms and copyright associated with the
software are included in each software package respectively. Please visit the product web
page for more information.
Upon request, the applicable source code will be provided. A nominal fee may be charged
to cover shipping and media. Please direct any source code request to your normal sales
or support channel.
WeOS Management Guide
This product runs WeOS (Westermo Operation System). Instructions for quick start,
configuration, factory reset and use of USB port are found in the WeOS Management
Guide at 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.
Warning - Hazardous voltage
The product must be installed by qualified service personnel
and built in to an apparatus cabinet or similar, where access is
restricted to service personnel only.
Before powering up, a protective earthing conductor must
be connected to the protective earthing terminal. Westermo
recommends a cross-sectional area of at least 4 mm 2 on the
protective earthing conductor.
Do not open a connected product. Hazardous voltage may occur
when connected to a power supply.
Disconnect all network connectors and cable distribution system
connectors, including power supply, before disconnecting the
protective earthing terminal.
Warning - Protective fuse
The power supply wiring must be sufficiently fused. It must be
possible to disconnect manually from the power supply. Ensure
compliance to national installation regulations. Refer to the user
guide for detailed information.
Replacing the internal fuse must only be performed by Westermo
qualified personell.
Warning - Reduce the risk of fire
To reduce the risk of fire, use only no. AWG 26 or larger
telecommunication line cord.
4
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Caution - Electrostatic discharge (ESD)
Prevent damage to internal electronic parts from electrostatic
discharge (ESD) by discharging your body to a grounding point
(e.g. use of a wrist strap).
Caution - Hot surface
Be aware of that the surface of this product may become hot.
When it is operated at high temperatures, the external surface
may exceed Touch Temperature Limit according to EN/IEC/UL
60950-1.
Westermo’s products are fanless and use convection cooling.
To avoid obstructing the airflow around the product, follow the
spacing recommendations.
Caution - Wiring
Ensure that the temperature rating of the cable is sufficient for the
application before connecting to the field wiring terminals.
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Note
This unit can be connected to two different power sources.
5
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Product disposal
This symbol means that the product shall not be treated
as unsorted municipal waste when disposing of it. It needs
to be handed over to an applicable collection point for
recycling electrical and electronic equipment.
By ensuring this product is disposed of correctly, you will
help to reduce hazardous substances and prevent potential
negative consequences to both environment and human
health, which could be caused by inappropriate disposal.
Care recommendations
Follow the care recommendations below to maintain full operation of unit and to fulfill
the warranty obligations:
• Do not drop, knock or shake the unit. Rough handling above 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 product. Paint can clog the product and prevent proper operation.
If the unit is not working properly, contact the place of purchase, nearest Westermo
distributor office or Westermo technical support.
6
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Simplified EU declaration of conformity
Hereby, Westermo declares that the equipment is in compliance with EU directives. The
full EU declaration of conformity and other detailed information are available at the
respective product page at www.westermo.com. .
EN 50121-4, Railway signalling and telecommunications apparatus
IEC 62236-4, Railway signalling and telecommunications apparatus
SafetyUL/IEC/EN 60950-1, IT equipment
MarineDNV GL rules for classification – Ships and offshore units
FCC Part 15.105
Notice:
Corrosive
environment
Notice:
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures:
… Reorient or relocate the receiving antenna
… Increase the separation between the equipment and receiver
… Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected
… Consult the dealer or an experienced radio/TV technician for help.
This product has been successfully tested in a corrosion test according to IEC 60068-2-60, method 3. This means that the product meets the requirements to be placed in an
environment classified as ISA-S71.04 class G3.
Caution - Corrosive gases
If the product is placed in a corrosive environment, it is important
that all unused connector sockets are protected with a suitable
plug, in order to avoid corrosion attacks on the gold plated
connector pins.
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Type tests and environmental conditions
Environmental phenomena Basic standard DescriptionTest levels
HumidityEN 60068-2-30Operating5 to 95 % relative humidity
AltitudeOperating2 000 m / 70 kPa
MTBFMIL-C217F2,
Service lifeOperating10 year
VibrationIEC 60068-2-6
ShockIEC 60068-2-27Operating30 g, 11 ms
BumpIEC 60068-2-27Operating10 g, 11 ms
Packaging
EnclosureEN 60950-1ZincFire enclosure
Dimension W x H x D
With connectors
Weight0.7 kg
Degree of protectionEN 60529EnclosureIP 40
CoolingConvection
* Refer to “Safety” section in User Guide.
** Might require Ethernet cables to be fastened close to the unit.
EN 60068-2-2
Parts count
(sine)
IEC 60068-2-64
(random)
Operating–40 to +70°C (–40 to +158°F)*
Storage and transport –50 to +85°C (–58 to +185°F)
Storage and transport 5 to 95 % relative humidity
Ground Benign, 25°C
(77°F)
Operating3 – 13.2 Hz: 1mm
593 000 hours
13.2 – 100 Hz: 0.7 g
5 – 20 Hz: 2 m²/s³,
20 – 2000 Hz: – 3 dB/oct
100 g, 6 ms**
52.5 x 100 x 101 mm
52.5 x 119 x 101 mm
5.5 – 30 Hz: 1.5 g
30 – 50 Hz: 0.42 mm
50 – 500 Hz: 4.2 g**
Description
L106-S2/L206-S2 is an Industrial switch and device server made for harsh environments.
WeOS is the operating system of L106-S2/L206-S2 enabling the unit to operate in two
functional levels. The switch can be used in either 10 or 100 Mbit networks.
Lynx DSS L106-S2/L206-S2 has two serial ports, one that supports RS-232 and the other
configurable for RS-232/422/485 as well as serial protocols for interconnection with
legacy equipment.
Our unique FRNT (Fast Recovery of Network Topology) technology is the fastest
protocol on the market to re-configure a network in the event of any link or hardware
failure. That is why our equipement are used in safety critical applications such as tunnels,
traffic signal control and railway systems.
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Interface specifications
Power
Operating voltageRated: 24 to 48 VDC
Rated current150 mA (300 mA) @ 24 VDC (with 500 mA USB load)
Rated frequencyDC
Inrush current, I2t22.7·10-3 A2s @ 48 VDC
Startup current*2 x Rated current
PolarityReverse polarity protected
Redundant power inputYes
Isolation toAll other
ConnectionDetachable screw terminal
Conductor cross section
Stripping length cable7 mm
Tightening torque, terminal screw 0.5-0.6 Nm
Tightening torque, screw flange0.3 Nm
Shielded cableNot required
* External supply current capability for proper start-up
Transmission rangeUp to 150 m with CAT5e cable or better*
Isolation toAll other
ConnectionRJ-45, auto MDI/MDI-X
CablingShielded CAT5e or better is recommended
Conductive housingYe s
Number of ports4
* Refer to Safety section.
Operating: 19 to 60 VDC
80 mA (150 mA) @ 48 VDC (with 500 mA USB load)
0.2 – 2.5 mm2 (AWG 24 – 12)
10
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RS-232
Electrical specificationEIA RS-232
Data rate50 bit/s – 115.2 kbit/s
Data format7 or 8 data bits, Odd, even or none parity, 1 or 2 stop bits
ProtocolTransparent, optimised by packing algorithm
Circuit typeSELV
Transmission range15 m / 49 ft
Isolation toAll other
ConnectionRJ-45 according to EIA-561
Shielded cableRecommended
Conductive housingYe s
Number of ports1
RS-232/422/485
Electrical specificationConfigurable for EIA RS-232 or EIA RS-422/485
Data rateRS-23250 bit/s – 115.2 kbit/s
RS-422/485 50 bit/s – 2 Mbit/s
Data format7 or 8 data bits, Odd, even or none parity, 1 or 2 stop bits
(2 stop bits only when no parity is set)
Circuit typeTNV-1
Transmission rangeRS-23215 m / 49 ft
RS-422/485 Up to 1200 m / 0.74 mi, depending on data rate and cable
type
Isolation toAll other
ConnectionRS-232RJ-45 according to EIA-561
RS-422/485 RJ-45
Shielded cableRS-232Recommended
RS-422/485 Not required, but recommended in railway installations close
to the rails.*
Conductive housingYe s
Number of ports1
* To minimise the risk of interference, a shielded cable is recommended when the cable is located inside 3 m
boundary or the cable is longer than 30 m and inside 10 m boundary to the rails and connected to this port.
Data format8 data bits, no parity, 1 stop bit, no flow control
Circuit typeSELV
Connection2.5 mm jack, use only Westermo cable 1211-2027
12
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Location of interface ports and LEDs
LED Indicators
Power connection
USB
Position Direction Description
No. 1OutVBUS
No. 2In/OutD–
No. 3In/OutD+
No. 4OutGND
ShieldIn/OutConnected to protective earth
Ethernet connection TX (4 ports)
Position Signal Direction Description
No.1TD+In/OutTransmitted/Received data
No. 2TD–In/OutTransmitted/Received data
I/O connection
No. 3RD+In/OutTransmitted/Received data
No. 4–Not Connected
No. 5–Not Connected
No. 6RD–In/OutTransmitted/Received data
No. 7–Not Connected
No. 8–Not Connected
ShieldConnected to PE
RJ-45 connector (Front view)
MaleFemale
Pin 8Pin 1
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Pin 8
Pin 1
Pin 1
Pin 8
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RS-422/485 (for more details see below)
No termination
Terminate RxTerminate Tx
Terminate Tx an d Rx
PositionSignalDirection Description
RS-422
(4-wire)
No. 1T+T+/R+Out/InRS-422: Transmit
No. 2T–T–/R–Out/InRS-422: Transmit
RS-485
(2-wire)
RS-485: Transmit/Receive
RS-485: Transmit/Receive
No. 3R––InRS-422: Receive
No. 4
No. 5
––
–
––
–Not used
Not used
No. 6R+–InRS-422: Receive
No. 7–––Not used
No. 8–––Not used
RS-232
Position SignalDirection Description
No. 1DSROutData Set Ready
No. 2DCDOutData Carrier Detect
No. 3DTRInData Terminal Ready
No. 4SG–Signal Ground, not chassis ground
No. 5RDOutReceive Data
No. 6TDInTransmit Data
No. 7CTSOutClear To Send
No. 8RT SInRequest To Send
Lynx DSS is equipped with internal termination that is configurable through software
in RS-422/485 mode. The following termination schemes are supported:
Tx
Tx
Tx
Tx
RS-422
Rx
No termination
Rx
Rx
Termination
Rx
RS-485
When the unit is powered-off or during reboot, any internal termination will be
disconnected from the signal lines.
Note: Due to that the port is configurable for both RS-232 and RS-422/485,
there are no fail-safe biasing available for RS-422/485 signals.
14
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I/O connection (for details see page 10)
Console port
(for details see page 10)
Bottom view
Cable 1211-2027
Connection to console port
The console port can be used to connect to the CLI
(Command Line Interface).
The following steps needs to be taken
1. Connect the serial diagnostic cable to the console port
(use only Westermo cable 1211-2027).
2. Connect cable to your computer (USB port, if drivers are needed they can be downloaded
from our Web page).
3. Use a terminal emulator and connect with correct speed and format (115200, 8N1)
to the assigned port.
For more information about the CLI, see the WeOS management guide.
Accessories
DescriptionArt no
Westermo console cable1211-2027
RJ45 to terminal block1200-2490
RJ45 to DB9 cable 1211-2210
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Power connection
4-position Product markingDirectionDescription
1
2
3
4
No. 1+DC1InputSupply voltage input DC1
No. 2+DC2InputSupply voltage input DC2
No. 3-COMInputCommon
No. 4-COMInputCommon
LynxDSS supports redundant power connection. The positive inputs are +DC1 and +DC2, the negative input for
both supplies are –COM. Connect the primary voltage (e.g. +24 VDC) to the +DC1 pin and return to one of the
–COM pins on the power input.
I/O connection
4-position Product markingDirectionDescription
1
2
3
4
The Status output is a potential free, opto-isolated normally closed solid-state relay.
This can be configured to monitor various alarm events within the Lynx DSS unit, see WeOS Management Guide.
An external load in series with an external voltage source is required for proper functionality.
For voltage/current ratings, see Interface Specification section.
No. 1Status +OutputAlarm relay (status) contact
No. 2Status –OutputAlarm relay (status) contact
No. 3Digital in +InputDigital in +
No. 4Digital in –InputDigital in –
The Digital in is an opto-isolated
digital input which can be used to
monitor external events. For voltage/current ratings, see Interface
Specification section:
16
Lynx DSS
External
Load
1
Status
2
3
4
V
+
V
–
Digital In
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LED indicators
LEDStatusDescription
ONOFFUnit has no power.
GREENAll OK, no alarm condition.
REDAlarm condition, or until unit has started up.
BLINKLocation indicator ("Here I am!"). Activated when
DC1
DC2OFFUnit has no power.
FRNTOFFFRNT disabled.
RSTP
USR1OFF
Rx/TD, TD OFFNo serial data received.
Tx/RD, RD OFFNo serial data transmitted.
1 to 4OFFNo Link.
* Note: Supply voltage levels must be ensured externally. A green LED may not guarantee a valid
operating voltage level.
OFFUnit has no power.
GREEN
REDPower failure on +DC1.
GREEN
REDPower failure on +DC2.
GREENFRNT OK.
REDFRNT Error.
BLINKUnit configured as FRNT Focal Point.
OFFRSTP disabled.
GREENRSTP enabled.
BLINKUnit elected as RSTP/STP root switch.
RED
GREEN
FLASH
GREEN
FLASH
GREENLink established.
GREEN
FLASH
YELLOW Port alarm and no link. Or if FRNT or RSTP mode,
(Alarm conditions are configurable, see ''WeOS
Management Guide'').
connected to IPConfig Tool, or upon request from
Web or CLI.
Voltage present on DC1*.
Voltage present on DC2*.
Configurable, see WeOS Management Guide.GREEN
Serial data received.
Serial data transmitted.
Data traffic indication.
port is blocked.
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Mounting
This unit should be mounted on 35 mm DIN-rail, which is horizontally mounted inside an
apparatus cabinet or similar. It is recommended that the DIN-rail is connected to ground.
Snap on mounting, see figure.
Mounting Lynx with integrated DIN-clip:
Removal
Removing Lynx with integrated DIN-clip:
Press down the support at the back of the unit using a screwdriver. 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.
18
10mm10mm
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Getting Started
This product runs Westermo Operating System (WeOS) which provides several
management tools that can be used for configuration of the unit.
• IPConfig tool
This is a custom Westermo tool used for discovery of attached Westermo units.
Note! Version of IP Config tool must be 10.4.0 or higher.
• Web
Configuration of the unit using the web browser.
• CLI
Configuration of the unit via the Command Line Interface.
Username: admin
Password: westermo
If the computer is located in the same subnet as the switch you can easily use a web
browser to configure the unit. Within the web you can configure most of the available
functions.
For advanced network settings and more diagnostic information, please use the CLI.
Detailed documentation is available in the chapter ”The Command Line Management
Tool” in the WeOS management guide.
Factory default IP address: 192.168.2.200
Netmask: 255.255.255.0
Gateway: Disabled
Note! If you are not sure about the subnet – consult your network administrator.
Configuration
Configure the unit via Web browser
The unit can easily be configured via a Web browser.
Open the link http://192.168.2.200 in your web browser, and you will be prompted with
a Login screen, where the default settings for Username and Password are:
Username: admin
Password: westermo
Once you have logged in, you can use the extensive integrated help function describing
all configuration options. Two common task when configuring a new switch is to assign
appropriate IP settings, and to change the password of the admin account.
The password can be up to 64 characters long, and should consist of printable ASCII
characters (ASCII 33-126); 'Space' is not a valid password character.
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Referring documents
TypeDescriptionDocument number
Management GuideWestermo OS management guide
6101-3201
Factory default on L106-S2 and L206-S2
It is possible to set the unit to factory default settings by using two straight standard
Ethernet RJ-45 cables.
1. Power off the switch and disconnect all Ethernet cables (copper and fibre).
2. Connect one Ethernet cable between Ethernet ports 1 and 4, and the other between
Ethernet ports 2 and 3.
The ports need to be connected directly by an Ethernet cable, i.e., not via a hub or
switch. Use a straight cable – not a cross-over cable – when connecting the ports.
3. Power on the unit.
4. Wait for the unit to start up. Control that the ON LED is flashing red.
The ON LED flashing indicates that the unit is now ready to be reset to factory
default. You now have the choice to go ahead with the factory reset, or to skip factory
reset and boot as normal.
• Go ahead with factory reset:
Acknowledge that you wish to conduct the factory reset by unplugging the
Ethernet cables. The ON LED will stop flashing.
This initiates the factory reset process*, and the unit will restart with factory default
settings. When the switch has booted up, the ON LED will show a green light, and is
now ready to use.
• Skip the factory reset:
To skip the factory reset process, just wait for approximately 30 seconds
(after the ON LED starts flashing RED) without unplugging the Ethernet cables.
The switch will conduct a normal boot with the existing settings.
* Note Do not power off the unit while the factory reset process is in progress.
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Westermo • SE-635 35 Stora Sundby, Sweden
Tel +46 16 42 80 00 Fax +46 16 42 80 01
E-mail: info@westermo.com
www.westermo.com
REV. H 6643-2240 2019-11 Westermo Network Technologies, Sweden
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