Westermo Viper-120A-P8-HV User manual

User Guide
6641-22521
REV. B
©Westermo Network Technologies AB
www.westermo.com
FRNT
RSTP
DC
ON
X8
X12
X13
X14
X7
X6
X10
X11
X5
X9 X15
X16
X17
X18
X19
X20
X1
USB
X2
X3
X4
24-38 V
DC
CON
PoE
M12 Torque 0.6±0,1 Nm / 0,45±0,1 lbft
RING
FRNT
RSTP
DC
ON
X8
X12
X13
X14
X7
X6
X10
X11
X5
X9 X15
X16
X17
X18
X19
X20
X1
USB
X2
X3
X4
48-110 V
DC
1000BASE-T
CON
PoE
M12 Torque 0.6±0,1 Nm / 0,45±0,1 lbft
Viper 20A-PoE Series
20 port Ethernet M12 switches with
Power over Ethernet

Table of Contents
1. General Information ........................................................................ 3
1.1. Legal Information ................................................................... 3
1.2. About This Guide ................................................................... 3
1.3. Software Tools ...................................................................... 3
1.4. License and Copyright for Included FLOSS ................................. 3
1.5. WeOS Management Guide ...................................................... 3
2. Safety and Regulations ................................................................... 4
2.1. Warning Levels ..................................................................... 4
2.2. Safety Information ................................................................. 5
2.3. Care Recommendations ......................................................... 6
2.4. Maintenance ......................................................................... 7
2.5. Product Disposal ................................................................... 7
2.6. Compliance Information .......................................................... 8
2.6.1. Agency Approvals and Standards Compliance .................... 8
2.6.2. FCC Part 15.105 .......................................................... 8
2.6.3. Simplified Declaration of Conformity .................................. 8
3. Product Description ...................................................................... 10
3.1. Product Description .............................................................. 10
3.2. Available Models ................................................................. 10
3.3. Hardware Overview ............................................................. 11
3.4. Connector Pinout ................................................................. 12
3.5. LED Indicators .................................................................... 14
3.6. Dimensions ........................................................................ 14
4. Installation .................................................................................. 16
4.1. Wall Mounting ..................................................................... 16
4.2. Connection of Cables ........................................................... 16
4.3. Cooling .............................................................................. 17
4.4. Removal of Product ............................................................. 17
4.5. EN 45545-2 Mounting Notes .................................................. 17
5. Specifications .............................................................................. 18
5.1. Interface Specifications ......................................................... 18
5.2. Type Tests and Environmental Conditions ................................. 21
6. Revision Notes ............................................................................ 23
2 Viper 20A-PoE Series

1. General Information
1.1. Legal Information
The contents of this document are provided “as is”. Except as required by applicable law,
no warranties of any kind are made in relation to the accuracy and reliability or contents of
this document, either expressed or implied, including but not limited to the implied
warranties of merchantability and fitness for a particular purpose. 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 www.westermo.com.
1.2. About This Guide
This guide is intended for installation engineers and users of the Westermo products.
It includes information on safety and regulations, a product description, installation
instructions and technical specifications.
1.3. Software Tools
Related software tools are available at Software tools under Technical support at
www.westermo.com.
1.4. License and Copyright for Included FLOSS
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.
1.5. WeOS Management Guide
This product runs WeOS (Westermo Operating System). Instructions for quick start,
configuration, factory reset and use of USB port are found in the WeOS Management
Guide at www.westermo.com.
Viper 20A-PoE Series 3

2. Safety and Regulations
2.1. Warning Levels
Warning signs are provided to prevent personal injuries and/or damages to the product.
The following levels are used:
Level of warning Description Consequence
personal injury
Consequence
material damage
WARNING
Indicates a potentially
hazardous situation
Possible death or major
injury
Major damage to the
product
CAUTION
Indicates a potentially
hazardous situation
Minor or moderate
injury
Moderate damage to the
product
NOTICE
Provides information in order
to avoid misuse of the
product, confusion or
misunderstanding
No personal injury Minor damage to the
product
NOTE
Used for highlighting general,
but important information
No personal injury Minor damage to the
product
Table 1. Warning levels
4 Viper 20A-PoE Series

2.2. Safety Information
Before installation:
Read this manual completely and gather all information available on the unit. Make sure it is
fully understood. 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 it manually from all power supply. Ensure compliance to national installation
regulations.
This unit relies on convection cooling. Make sure that it is installed so that the ambient
temperature is within the specified temperature range, e.g. by avoiding obstruction of the
airflow around the unit. Also see EN 45545-2 Mounting Notes [17] chapter.
WARNING - PREVENT ACCESS TO HAZARDOUS VOLTAGE
Before mounting, using or removing this unit: Prevent access to hazardous
voltage by disconnecting the unit from all power supply.
WARNING - HAZARDOUS VOLTAGE
Do not open the connected unit. Hazardous voltage may occur within this
unit when connected to power supply.
CAUTION - HOT SURFACE
Be aware of that the surface of this unit may become hot. When this unit
is operated at high temperatures, the external surface of the equipment
may exceed Touch Temperature Limit according to EN/IEC/UL 60950-1.
Viper 20A-PoE Series 5

NOTICE - REDUCE RISK OF FIRE
To reduce the risk of fire:
1. Use only No. 18 AWG or larger power cable for Viper LV units
2. Use only No. 21 AWG or larger power cable for Viper HV units
3. Use only No. 26 AWG or larger telecommunication line cord
Additionally, any cable used for Power over Ethernet must fulfill
requirements specified in IEEE 802.3.
NOTICE - CONNECT EXTERNAL FUSE
The unit has no internal fuse and should be connected via an external fuse
for protection. The fuse must be UL approved and rated for at least 160
VDC / 7.5 A.
NOTICE - ADDITIONAL EMC TYPETESTS
For additional EMC typetests with powering via a CDN or similar high
inductive filters, please contact Westermo for correct test setup.
2.3. Care Recommendations
Follow the care recommendations below to maintain full operation of the unit and to fulfill
the warranty obligations:
• Do not attempt to disassemble the unit. There are not any user serviceable parts inside.
• 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 expose the unit to any kind of liquid (water, beverages, paint etc), unless all
connectors are connected or fitted with protective caps (delivered with the unit),
tightened to the specified torque. Connected cables must have the appropriate ingress
protection code.
• Do not use or store the unit in dusty or dirty areas, unless all connectors and the
ventilation membrane are sufficiently protected.
• Do not cover or bring mechanical force to the ventilation membrane on the back of the
unit.
If the unit is not working properly, contact the place of purchase, nearest Westermo
distributor office or Westermo Tech support.
6 Viper 20A-PoE Series

2.4. Maintenance
No maintenance is required, as long as the unit is used as intended within the specified
conditions.
2.5. 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.
Figure 1. WEEE symbol for treatment of product disposal
Viper 20A-PoE Series 7

2.6. Compliance Information
2.6.1. Agency Approvals and Standards Compliance
Type Approval/Compliance
Climate • EN 50155/IEC 60571 class TX, Railway applications - Electronic equipment used
on rolling stock
• IEEE 1478 class 1, condition E4 (incl Salt Mist), Environmental conditions for transit
rail car electronic equipment
EMC • EN 61000-6-2, Immunity industrial environments
• EN 61000-6-4, Emission industrial environments
• EN 50121-3-2/IEC 62236-3-2 Railway applications – Rolling stock – apparatus
• Tested and verified for Class S1, DB EMC Regulation 06, Commodity team Radio
compatibility in VDB Rev 1.0 (Shunting Radio). Compliant with SBB requirements.
• Tested and verified for Class S1, ÖBB Radio compatability in near field in
accordance with ÖBB Infrastructure Edition 4, Revision 14 (Shunting Radio).
• Tested and verified for FCC part 15
Mechanical
(Shock and
vibration)
• EN 61373 category 1, class A and B
• EN 60068-2-27 20 g, 11 ms and 100 g, 6 ms
Insulation
(Coordination and
test)
• EN 50124-1, Railway applications – Insulation coordination
• EN 50155/IEC 60571, Railway applications - Electronic equipment used on rolling
stock
Fire protection • EN 45545-2, Fire protection on railway vehicles
• NFPA 130, Fire protection for fixed guideway transit and passenger rail system
Table 2. Agency approvals and standards compliance
2.6.2. FCC Part 15.105
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
the users own expense.
2.6.3. Simplified Declaration of Conformity
Hereby, Westermo declares that the equipment is in compliance with applicable EU
directives. The full EU declaration of conformity and other detailed information is available
at the respective product page at www.westermo.com.
8 Viper 20A-PoE Series

Figure 2. The European conformity marking
Viper 20A-PoE Series 9

3. Product Description
3.1. Product Description
The Viper-20A-PoE series is a series of managed 20 port switches optimised for the needs
of the railway rolling stock market. PoE ports offer effective powering of end-devices. Gbps
ports cope with high bandwidth devices such as access points and NVRs (Network Video
Recorders).
The Viper is designed to withstand the tough environment on-board trains, exposing the
switch to constant vibration, extreme temperatures, humidity and a demanding electrical
environment.
A GORE-TEX® membrane prevents internal condensation. Threading integrated in chassis
provides for additional vibration resistance. High-level isolation between all interfaces
enables direct connectivity to vehicle auxiliary power and protects against overvoltage and
flashover. IP67 protection prevents ingress of water and dust. An overall optimised design
results in an extremely compact package in combination with very high MTBF for easy
integration and low lifecycle cost.
Thorough type testing at independent ISO/IEC 17025 and ILAC MRA certified labs,
accredited to a wide range of standards, show that the Viper series fulfills EN 50155 and
other requirements. The state-of-the-art Westermo production facility ensures the quality
of each individual unit, e.g. through temperature cycling burn-in testing.
Meeting the requirements of the railcar market, the Viper is very well suited for
deployment in any other application with severe operating conditions and tough
environments, for instance in the mining industry.
3.2. Available Models
All switches are managed and have eight PoE ports. Viper x20A-PoE is used when referring
to both models 120A-PoE and 220A-PoE.
Art.no Model Layer Gbps ports HV LV
3635-1010 Viper-120A-P8-HV 2 - 48 - 110 V
3635-1020 Viper-220A-P8-HV 3 - 48 - 110 V
3635-1110 Viper-120A-P8-LV 2 - 24 - 38 V
3635-1120 Viper-220A-P8-LV 3 - 24 - 38 V
3635-1310 Viper-120A-T4G-P8-HV 2 4 48 - 110 V
3635-1320 Viper-220A-T4G-P8-HV 3 4 48 - 110 V
3635-1410 Viper-120A-T4G-P8-LV 2 4 24 - 38 V
3635-1420 Viper- 220A-T4G-P8-LV 3 4 24 - 38 V
Table 3. Available Viper x20A-P8 models
10 Viper 20A-PoE Series

3.3. Hardware Overview
M12 Torque 0.6±0,1 Nm / 0,45±0,1 lbft
X11 X17
X10 X16
X2
ON
FRNT
CON
RSTP
USB
DC
X5
X1 X4
X7
X6
PoE
X13 X19
X8
1000BASE-T
48-110 V
DC
X14 X20
X12 X18
X9X3 X15
1 2
46
7
9
8
3
5
No. Description No. Description
1 LED indicator 2 100 Mbps port
3 100 Mbps PoE port 4 Gbps ports
5 Gbps PoE port 6 Power connection
7 Console port 8 USB port
9 Protective earth connection
Figure 3. Location of interface ports and LED indicators
Viper 20A-PoE Series 11

3.4. Connector Pinout
Pin
no.
Signal Illustration
1 +DC1
2 1
3 4
2 +DC1
3 -COM
4 -COM
The Viper-20A-PoE series has single power
connection. Dual pins shall be connected to the
power supply (+DC1 for positive terminal, -COM
for negative terminal) in order to distribute the
current over two pins.
Table 4. Power connector HV
Pin
no.
Signal Illustration
1 +DC1
3
1
2
4
2 +DC1
3 -COM
4 -COM
The Viper-20A-PoE series has single power
connection. Dual pins shall be connected to the
power supply (+DC1 for positive terminal, -COM
for negative terminal) in order to distribute the
current over two pins.
Table 5. Power connector LV
Pin no. Signal Illustration
1 NC
2 TX
3 RX
4 NC
5 GND
Table 6. Console connector
12 Viper 20A-PoE Series

Pin no. Signal Illustration
1 DN
2 VBUS
3 NC
4 DC
5 GND
Table 7. USB connector
Pin
no.
Signal Illustration
1 TD+
2 RD+
3 TD-
4 RD-
MDI, MDI-X and auto MDI/MDI-X modes are
supported. The table shows signals in MDI mode.
Table 8. 100 Mbps Ethernet connector
Pin no. Signal Illustration
1 DA+
1
2
3
45
6
7
8
2 DA-
3 DB+
4 DB-
5 DD+
6 DD-
7 DC-
8 DC+
Table 9. Gbps connector
Viper 20A-PoE Series 13

3.5. LED Indicators
LED Status Description
ON OFF Unit has no power
GREEN All OK, no alarm condition
RED Alarm condition, or until unit has started up.
(Alarm conditions are configurable, see WeOS
Management Guide)
BLINK Location indicator ("Here I am!"). Activated
when connected to WeConfig tool, or upon
request from web or/and CLI. RED BLINK
during boot indicates pending cable factory
reset.
RSTP OFF RSTP disabled
GREEN RSTP enabled
BLINK Unit selected as RSTP/STP root switch
FRNT OFF FRNT disabled
GREEN FRNT OK
RED FRNT error
BLINK Unit configured as FRNT focal point
DC OFF Unit has no power
GREEN Power OK. Input voltage > 70% of minimum
nominal voltage
RED Power failure. Input voltage < 70 % of
minimum nominal voltage
X1 to X20 OFF No link
GREEN Link established
GREEN
FLASH
Data traffic indication
YELLOW Port alarm, or port is set in blocking state by
link redundancy protocol
PoE OFF Port does not consume PoE power
GREEN Port consumes PoE power
Table 10. LED indicators
3.6. Dimensions
Dimensions are stated in millimetres and are regardless of HV or LV model.
14 Viper 20A-PoE Series

3,5 +1 -0,5
83
110
178
160
164 ±0,5
56 ±0,3
7,2 +0,2 -0,5
Grounding point screw M5x10
Figure 4. Dimensional drawing
Viper 20A-PoE Series 15

4. Installation
4.1. Wall Mounting
The unit can be wall mounted vertically or horizontally. There are four pieces of 7 mm
bores for this. Use four M5, M6 or 1/4" screws with 12 mm washers on a flat and stable
surface.
M12 Torque 0.6±0,1 Nm / 0,45±0,1 lbft
X11 X17
X10 X16
X2
ON
FRNT
CON
RSTP
USB
DC
X5
X1 X4
X7
X6
PoE
X13 X19
X8
1000BASE-T
48-110 V
DC
X14 X20
X12 X18
X9X3 X15
Figure 5. Wall mounting
4.2. Connection of Cables
Recommended tightening torque for the M12 connectors is 0.6 Nm.
When connecting the power cable, ensure that the pins are connected correctly before
tightening the power cable to the unit.
16 Viper 20A-PoE Series

NOTICE - UNUSED CONNECTORS
Unused connectors must be covered by a protective cap (delivered with
the unit), tightened to the specified torque in order to fulfill the specified
ingress protection code.
NOTICE - CONNECT EXTERNAL FUSE
The unit has no internal fuse and should be connected via an external fuse
for protection. The fuse must be UL approved and rated for at least 160
VDC / 7.5 A.
4.3. Cooling
This unit relies on convection cooling. Make sure that it is installed so that the ambient
temperature is within the specified temperature range, e.g. by avoiding obstruction of the
airflow around the unit.
4.4. Removal of Product
Disconnect all cables and unscrew the unit from the wall. Time for replacement: < 15
minutes.
CAUTION - HOT SURFACE
Be aware of that the surface of this unit may become hot. When this unit
is operated at high temperatures, the external surface of the equipment
may exceed Touch Temperature Limit according to EN/IEC/UL 60950-1.
4.5. EN 45545-2 Mounting Notes
Two units can be mounted together and as a single interior non-listed group in the sense of
EN 45545-2 definitions. For multiple units, the spacing requirements for interior non-listed
groups must be met.
Viper 20A-PoE Series 17

5. Specifications
5.1. Interface Specifications
DC, Power port
Rated voltage Viper-x20A-PoE LV units: 24 to 38 VDC
Viper-x20A-PoE HV units: 48 to 110 VDC
Operating voltage Viper-x20A-PoE LV units:
16.8 to 49.9 VDC (14.4 to 53.2 VDC for 100 ms)
Viper-x20A-PoE HV units:
33.6 to 143 VDC (28.8 to 154 VDC for 100 ms)
Rated current Viper-x20A-PoE LV units: max 5.0 A at 24 VDC, max 3.2 A at 38 VDC
Viper-x20A-PoE HV units: max 2.6 A at 48 VDC, max 1.1 A at 110 VDC
Rated frequency DC
Inrush current, I²t Viper-x20A-PoE LV units: 580 mA2s at 24 VDC, 560 mA²s at 38 VDC
Viper-x20A-PoE HV units: 200 mA2s at 48 VDC, 160 mA²s at 110 VDC
Startup currentaViper-x20A-PoE LV units: 1.8 A at 16.8 VDC
Viper-x20A-PoE HV units: 750 mA at 33.6 VDC
Polarity Reverse polarity protected
Redundant power input No
Isolation 2250 VDC to all other ports
Connector Viper-x20A-PoE LV units:
4-pin, male, M12, T-coded, recommended Westermo cable:
3146-1108 for 5 m
Viper-x20A-PoE HV units:
4-pin, male, M12, A-coded, recommended Westermo cables:
3146-1106 for 1.5 m
3146-1107 for 5 m
Cable size For Viper-x20A-PoE HV units:
M12, recommended cable area 0.5 mm² (minimum 0.25 mm²)
For Viper-x20A-PoE LV units:
M12, recommended cable area 1 mm² (minimum 0.75 mm²)
Cable dimensions depend on choice of M12 connector
aExternal supply current capability for proper startup
18 Viper 20A-PoE Series

100 Mbps ports, non PoEa
Electrical specification IEEE std 802.3
Data rate 10 Mbps, 100 Mbps, manual or auto
Duplex Full of half, manual or auto
Circuit type TNV-1
Transmission range Up to 150 m with CAT5e cable or better
Isolation 2250 VDC to all other portsb
Connector 4-pin, female, M12, D-coded, auto MDI/MDI-X, recommended Westermo
cables:
3146-1100 M12-M12 - 1 m
3146-1101 M12-M12 - 5 m
3146-1103 RJ45-M12 - 1 m
3146-1104 RJ45-M12 - 5 m
Shielded cable Required
Conductive chassis Yes
FRNT reconfiguration time Typically below 20 ms
a100 Mbps ports, non-PoE, are:
X1-X4, X8-X10, X14-X16, X19-X20 on Viper-x20A-P8-HV/LV
X1-X4, X9-X10, X15-X16, X19-X20 on Viper-x20A-T4G-P8-HV/LV
b750 VDC after damp heat, according to EN 50155
Gbps ports, non-PoEa
Electrical specification IEEE std 802.3
Data rate 10 Mbps, 100 Mbps, 1000 Mbps, manual or auto
Circuit type TNV-1
Transmission range Up to 100 m with CAT5e cable or better
Isolation 2250 VDC to all other portsb
Connector 8-pin, female, M12, X-coded
Shielded cable Required
FRNT reconfiguration time Typically below 20 ms
aGbps ports, non-PoE are: X8, X14
b750 VDC after damp heat, according to EN 50155
Viper 20A-PoE Series 19

PoE ports, 100 Mbps and Gbpsa
Electrical specification IEEE std 802.3
Circuit type TNV-1
Transmission range Up to 100 m with CAT5e cable or better
Isolation 2250 VDC to all other portsb
Output voltage 54 VDC, ±5%
Output powercMax 30 W on one port (PoE+)
Max 80 W in total on all ports
aPoE ports are:
X5-X7, X11-X13, X17-X18 on Viper-x20A-P8-HV/LV
X5, X11-X13, X17-X18 and Gbps ports X6-X7 on Viper-x20A-T4G-P8-HV/LV
b750 VDC after damp heat, according to EN 50155
cAs delivered by Power Sourcing Equipment, i.e. the Viper-x20A-PoE switch. Power available at Powered Device is
depending on the cable resistance.
NOTE
PoE ports are not isolated to each other.
USB port
Electrical specification USB 2.0 host interface
Data rate Up to 480 Mbps (high-speed mode)
Maximum supply current 500 mA
Circuit type SELV
Isolation To Ethernet and DC ports: 2250 VDC
No isolation to CON or chassis
Connector 5-pin, female, M12, A-coded, recommended Westermo USB plug
3641-0190
Console port
Electrical specification RS-232
Data rate 115.2 kbit/s
Data format 8 data bits, no parity, 1 stop bit, no flow control
Circuit type SELV
Isolation To Ethernet and DC ports: 2250 VDC
No isolation to USB or chassis
Connector 5-pin, female, M12, B-coded, recommended Westermo cables:
1211-2215 (serial port) or 1211-4073 (USB)
20 Viper 20A-PoE Series