westermo Viper 12A-PoE Series 12 Port Ethernet M12 Switches with Power Over Ethernet User Guide
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 www.westermo.com/support/software-tools.
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 4 (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.
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:
Table 1. Warning levels
2.2. Safety Information Before installation:
Read this manual completely and gather all information available on the product. Make sure it is fully understood. Check that your application does not exceed the safe operating
specifications for the product.
SAFETY DURING INSTALLATION
The product must be installed and operated by qualified service personnel and installed into an apparatus cabinet or similar, where access is restricted to service personnel only.
Refer to chapter Compliance Information to see the required level of qualified service personnel according to safety standards. During installation, ensure a protective earthing conductor is first connected to the protective earthing terminal (only valid for metallic housings). Westermo recommends a cross-sectional area of at least 4 mm2. Note that this product can be connected to two different power sources. Upon removal of the product, ensure that the protective earthing conductor is disconnected last.
HAZARDOUS VOLTAGE
Do not open an energized product. Hazardous voltage may occur when connected to a power supply.
PROTECTIVE FUSE
The power supply wiring must be sufficiently fused. The fuse must be IEC 60127 certified and rated for T1.6 A and 250 V. It must be possible to disconnect manually from the power supply. Ensure compliance to national installation regulations. This product has no internal fuse and should be connected via an external fuse for protection.
REDUCE THE RISK OF FIRE
To reduce the risk of fire, use only telecommunication line cords with a cable diameter of AWG 26 or larger. Regarding power cable dimensions, see chapter Interface Specifications.
CABLE TEMPERATURE RATING FOR FIELD TERMINAL WIRES
There may be a requirement on the minimum temperature rating of the cable to be connected to the field wiring terminals, see chapter Interface Specifications.
ELECTROSTATIC DISCHARGE (ESD)
Prevent electrostatic discharge damage to internal electronic parts by discharging your body to a grounding point (e.g. use a wrist strap).
HOT SURFACE
Be aware 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 the product’s relevant electrical safety standard.
NOTE – MECHANICAL FORCE ON VENTILATION MEMBRANE
Do not cover or bring mechanical force to the ventilation membrane on the back of the product.
2.3. Care Recommendations
Follow the care recommendations below to maintain the full operation of the product and to fulfill the warranty obligations:
- Do not drop, knock or shake the product. Rough handling above the specification may cause damage to internal circuit boards.
- Use a dry or slightly water-damp cloth to clean the product. Do not use harsh chemicals, cleaning solvents, or strong detergents.
- Do not paint the product. Paint can clog the product and prevent proper operation.
If the product is used in a manner not according to specification, the protection provided by the equipment may be impaired.
If the product is not working properly, contact the place of purchase, the nearest Westermo distributor office or Westermo technical support.
2.4. 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 the product is disposed of correctly, you will help to reduce hazardous substances and prevent potential negative consequences to both the environment and human health, which could be caused by inappropriate disposal.
Figure 1. WEEE symbol for treatment of product disposal
2.5. Compliance Information
2.5.1. Agency Approvals and Standards Compliance
| Type | Approval/Compliance |
| Climate |
|
| EMC |
|
| Mechanical (Shock and vibration) |
|
| Insulation (Coordination and test) |
|
| Fire protection |
|
| Software |
|
| Safety |
|
Table 2. Agency approvals and standards compliance
2.5.2. EN/IEC/UL 61010-2-201 Notice
This product has been tested and found compliant to EN/IEC/UL 61010-2-201, Safety requirements for electrical equipment for measurement, control, and laboratory use. In
In accordance with the definitions of the standard, this product shall be handled by skilled service personnel.
2.5.3. FCC Part 15.105 Class A Notice
This product 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 product is operated in a commercial environment. This product generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the user manual, may cause harmful interference to radio communications. Operation of this product in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at the user’s own expense.
2.5.4. Simplified Declaration of Conformity
Hereby, Westermo declares that this product is in compliance with applicable EU directives and UK legislation. The full declaration of conformity and other detailed information is available at www.westermo.com/support/product-support.
Figure 2. The European Conformity and the UK Conformity Assessment markings
Product Description
3.1. Product Description
The Viper-12A series consists of managed 12 port routing switches optimized for the needs of the railway rolling stock market. Gbps ports cope with high bandwidth devices such as access points and NVRs (Network Video Recorders). The Viper-12A series 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 the 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 the ingress of water and dust. An overall optimized 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. The WeOS operating system offers an extensive suite of IP networking features for resilient and flexible networks, e.g. the FRNT ring protocol with very fast failover. The powerful layer 3 routing capability is very useful for separating networks in complex applications. The backup device accessory matches the Viper in robustness and offers easy configuration update and backup. Meeting the requirements of the railcar market, the Viper-12A series 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. Viper x12A is used when referring to both models 112A and 212A.
| Art. no. | Model | Software | Gbps ports |
| 3635-0010 | Viper-112A | L2 | – |
| 3635-0310 | Viper-112A-T3G | L2 | 3 |
| 3635-0610 | Viper-112A-T5G | L2 | 5 |
| 3635-0020 | Viper-212A | L3 | – |
| 3635-0320 | Viper-212A-T3G | L3 | 3 |
| 3635-0620 | Viper-212A-T5G | L3 | 5 |
NOTE – MECHANICAL FORCE ON VENTILATION MEMBRANE
Do not cover or bring mechanical force to the ventilation membrane on the back of the product.
3.3. Hardware Overview
| No. | Description | No. | Description |
| 1 | LED indicator | 2 | 100 Mbps port |
| 3 | Gbps port | 4 | Power connection |
| 5 | Console port | 6 | Protective earth connection |
| 7 | USB port |
Figure 3. Location of interface ports and LED indicators
3.4. Connector Pinout
| Pin no. | Signal | Illustration |
| 1 | +DC1 |  |
| 2 | +DC2 | |
| 3 | -COM | |
| 4 | -COM | |
| Viper-x12A supports a redundant power connection. The positive inputs are +DC1 and +DC2. The negative input for both supplies is -COM | ||
Table 4. Power connector
| Pin no. | Signal | Illustration |
| 1 | NCA |  |
| 2 | TX | |
| 3 | RX | |
| 4 | NCA | |
| 5 | GND |
aNo Connect. Do not connect.
Table 5. Console connector
| Pin no. | Signal | Illustration |
| 1 | DN |  |
| 2 | VBUS | |
| 3 | NCa | |
| 4 | DC | |
| 5 | GND |
aNo Connect. Do not connect.
Table 6. 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 7. 100 Mbps Ethernet connector
| Pin no. | Signal | Illustration |
| 1 | DA+ |  |
| 2 | DA- | |
| 3 | DB+ | |
| 4 | DB- | |
| 5 | DD+ | |
| 6 | DD- | |
| 7 | DC- | |
| 8 | DC+ |
Table 8. Gbps connector
3.5. LED Indicators
| LED | Status | Description |
| ON | OFF | The product has no power |
| GREEN | All OK, no alarm condition | |
| RED | Alarm condition, or until the product 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 | Product selected as RSTP/STP root switch | |
| FRNT | OFF | FRNT disabled |
| GREEN | FRNT OK | |
| RED | FRNT error | |
| BLINK | Product configured as FRNT focal point | |
| DC | OFF | The product has no power |
| GREEN | Power OK on DC1 and DC2 | |
| RED | Power failure on DC1 or DC2 | |
| X1 to X12 | 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 |
3.6. Dimensions
Dimensions are stated in mm.
Installation
4.1. Wall Mounting
The product 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.
4.2. Protective Earth Connection
For correct function, the earth connection needs to be properly connected to a designated PE rail. See the figure below.
4.3. Connection of Cables
Recommended tightening torque for the M12 connectors is 0.6 Nm. All M12 connections are screw connections.
When connecting the power cable, ensure that the pins are connected correctly before tightening the power cable to the unit.
PROTECTIVE FUSE
The power supply wiring must be sufficiently fused. The fuse must be IEC 60127 certified and rated for T1.6 A and 250 V. It must be possible to disconnect manually from the power supply. Ensure compliance with national installation regulations. This product has no internal fuse and should be connected via an external fuse for protection.
NOTE – UNUSED CONNECTORS
Unused connectors must be covered by a protective cap (delivered with the product), and tightened to the specified torque in order to fulfill the specified ingress protection code.
4.4. Cooling
This product relies on convection cooling. Make sure that it is installed so that the ambient temperature is within the specified temperature range. Avoid obstruction of the airflow around the product.
4.5. Replacement of Product
Disconnect all cables and unscrew the product from the wall. Mount the replacement product and reconnect all cables, observing the instructions in Connection of Cables [18].
For easy replication of the configuration of the original product, it is recommended to have the Westermo USB plug permanently connected to the USB port and move it over to the replacement product before it is powered up.
MTTR (Mean Time To Repair), i.e. time for replacement of the product is: < 10 minutes.
HOT SURFACE
Be aware that the surface of this product may become hot. When it is operated at high temperatures, the external surface may exceed the Touch Temperature Limit according to the product’s relevant electrical safety standard.
4.6. EN 45545-2 Mounting Notes
Two products can be mounted together and as a single interior non-listed group in the sense of EN 45545-2 definitions. For multiple products, the spacing requirements for interior non-listed groups must be met.
Specifications
5.1. Interface Specifications
| DC, Power port | |
| Rated voltage | 24 to 110 VDC |
| Operating voltageb | 16.8 to 143 VDC (14.4 VDC to 100 ms and 154 VDC for 1 s) |
| Rated current | Max 580 mA at 24 VDC, max 140 mA at 110 VDC |
| Rated frequency | DC |
| Inrush current | 80 mA²s at 24 VDC, 140 mA²s at 110 VDC |
| Startup current | Max 840 mA at 16.8 VDC |
| Polarity | Reverse polarity protected |
| Redundant power input | Yes |
| Isolation | To all other ports |
| Circuit type | Secondary circuit hazardous voltage, OVC II |
| Connector | 4-pin, male, M12, A-coded, recommended Westermo cables: 3146-1106 for 1.5 m3146-1107 for 5 m |
| Cable size | M12, recommended power cable area 0.5 mm² (minimum 0.25 mm²), which correlates to AWG 21 or largerCable dimensions depend on the choice of M12 connector |
| Cable temperature rating | For minimum temperature rating of the cable to be connected to the field wiring terminals: -40 to +70 °C |
also referred to as nominal voltage in EN/IEC 61010-1
bAlso referred to as nominal input including fluctuations in EN/IEC 61010-1
| 100 Mbps portsa | |
| Electrical specification | IEEE std 802.3 |
| Data rate | 10 Mbps, 100 Mbps, manual or auto |
| Duplex | Full or half, manual or auto |
| Circuit type | TNV-1 |
| Transmission range | Up to 150 m with CAT5e cable or better |
| Isolation | To all other ports |
| 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 |
| Cabling | Shielded cable CAT5e or better is recommended |
| Conductive chassis | Yes |
| FRNT reconfiguration time | Typically below 20 ms |
a100 Mbps ports are:
X1-X12 on Viper-x12A
X1-X3, X5-X7, X9-X11 on Viper-x12A-T3G
X1, X5-X7, X9-X11 on Viper-x12A-T5G
| Gbps portsa | |
| 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 150 m with CAT5e cable or better |
| Isolation | To all other ports |
| Connector | 8-pin, female, M12, X-coded |
| Cabling | Shielded cable CAT5e or better is recommended |
| Conductive chassis | Yes |
| FRNT reconfiguration time | Typically below 20 ms |
aGbps ports are: X4, X8, X12 on Viper-x12A-T3G, X2-X4, X8, X12 on Viper-x12A-T5G
| 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 all Ethernet and DC ports No isolation to CON or protective earth |
| 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 all Ethernet and DC ports No isolation to USB or protective earth |
| Connector | 5-pin, female, M12, B-coded, recommended Westermo cables: 1211-2215 (serial port) or 1211-4073 (USB) |
5.2. Type Tests and Environmental Conditions
| Environmental phenomena | Basic standard | Description | Test levels |
| ESD | EN 61000-4-2 | Enclosure | Contact: ±6 kV Air: ±8 kV |
| Fast transients | EN 61000-4-4 | Power port | ± 2 kV |
| Signal ports | |||
| Earth port | |||
| Surge | EN 61000-4-5 | Power port | L-E: ± 2 kV, 42 Ω, 0.5 µF, 1.2/50 µs L-E: ± 0.5 kV, 12 Ω, 9 µF, 1.2/50 µs L-L: ± 2 kV, 42 Ω, 0.5 µF, 1.2/50 µs L-L: ± 0.5 kV, 2 Ω, 18 µF, 1.2/50 µs |
| Ethernet port | L-E: ± 2 kV, 2 Ω | ||
| Pulsed magnetic field | EN 61000-4-9 | Enclosure | 300 A/m |
| Radiated RF immunity | EN 61000-4-3 | Enclosure | 20 V/m at (80 MHz to 2 GHz) 10 V/m at (2-6 GHz) 1 kHz sine, 80% AM |
| Conducted RF immunity | EN 61000-4-6 | Power port | 10 V, 80% AM, 1 kHz; (0.15-80) MHz |
| Ethernet ports | |||
| Earth port | |||
| Radiated RF emission | CISPR 16-2-3 | Enclosure | EN 61000-6-4 (30-6000 MHz) |
| ANSI C63,4 (FCC Part 15) | EN 61000-6-4 (30-6500 MHz) | ||
| Conducted RF emission | CISPR 16-2-1 | Power port | EN 61000-6-4 |
| Ethernet ports | EN 61000-6-3 | ||
| Dielectric strength | EN 60950-1 | Power port to all other ports | 2250 VDC, 1 min |
| Ethernet ports to all other ports | 2250 VDC, 1 mina | ||
| Gbps Ethernet ports to all other ports | 2250 VDC, 1 mina |
a750 VDC after damp heat, according to EN 50155
Table 10. EMC and electrical conditions
| Environmental phenomena | Basic standard | Description | Test levels |
| Temperatures | EN 60068-2-1 EN 60068-2-2 | Operational | -40 to +70°C (-40 to +158°F)ab |
| Storage and transport | -55 to +85°C (-67 to +185°F) | ||
| Humidity | EN 60068-2-30 | Operational | 5-95% relative humidity |
| Storage and transport | |||
| Altitude | Operational | 2000 m | |
| Service life | Operational | 20 years according to IEC/TR 62380 | |
| MTBF | 1: MIL-217F2, GB, 25°C (+77°F) 2: IEC 62380 | Viper-x12A: 1: 557,000 h Viper-x12A-T3G: 1: 549,000 h, 2: 561,000 h Viper-x12A-T5G: 1: 544,000 h | |
| Vibration | IEC 60068-2-6 (sine) | Operational | 2 g rms 5-500 Hz, 5 sweeps |
| IEC 60068-2-64 (random) | Non-operational long life simulation | 11.44 m/s² rms 5-150 Hz, 5 hours 2.3 m/s² rms 5-2000 Hz, 5 hours | |
| Shock | DEC 60068-2-27 | Operational | 10 g, 30 ms, half-sine 20 g, 11 ms, saw tooth 100 g, 6 ms, half-sine |
| Weight | 1.4 kg | ||
| Degree of protection | EN 60529 | Enclosure | IP67 |
| Cooling | Convection | ||
| Overvoltage category | EN/IEC/UL 61010-1 | OVC II | |
| Pollution degree | EN/IEC/UL 61010-1 | PD3 macro environment and PD2 microenvironment | |
| EN 50124-1 | PD2 | ||
| Location | EN/IEC/UL 61010-1 | Outdoor, wet locations | |
| IEEE 1478 | Class 1, condition E4. Indoor |
Refers to the “Safety and Regulations” chapter regarding touch temperature
Operational at +85°C for a limited time
installation and maintenance shall be made under controlled environments.
Table 11. Environmental and mechanical conditions
Revision Notes
| Revision | Date | Change description |
| Rev. L | 2022-01 | 2.2 Safety Information updated (Warning – Safety during installation), 2.5.1. Agency Approvals and Standards Compliance (Software plus Safety added), 2.5.2 EN/IEC/UL 61010-2-210 Notice added, 5.2 Type Tests and Environmental Conditions updated (UL added to EN/IEC 61010-1) |
| Rev. K | 2021-12 | 5.1 Interface Specification updated (DC Power port; operating voltage) |
| Rev. J | 2021-05 | Westermo logo updated, blue product illustrations throughout the user guide, 2.2 Safety Information – various warnings updated in accordance with General and Information Safety manual, 2.3 Care Recommendations, text updated, old chapter 2.4 Maintenance deleted 2.5.1. Agency Approvals and Standards Compliance updated 2.5.3 Simplified Declaration of Conformity; text and figure updated, 3.1. Product Description updated, 3.4. Connector Pinout, illustration for table 5 updated, 3.6. Dimensions, illustration updated, 4.2. Earth connection chapter added 5.1. Interface Specifications updated (all tables), 5.2 Type Tests and Environmental Conditions updated (Altitude updated, Enclosure deleted, Overvoltage category added, Pollution degree added and Location added). |
| Rev. I | 2020-01 | 2.6.1 Agency Approvals and Standards Compliance – references to SBB requirements and ÖBB removed, 5.1 Interface Specifications (rated current) updated. |
| Rev. H | 2019-09 | 5.1 Interface specification updated with new inrush current value. |
| Rev. G | 2019-06 | Frontpage updated, “unit” changed to “product” throughout the user guide, 1.3 Software Tools text updated, 2.2 Safety Information: Notice – Mechanical force on ventilation membrane new information, 2.3 Care Recommendations text updated, 2.6.1 Agency Approvals and Standards Compliance updated (E-mark), 4.4 Replacement of Product text updated |
| Rev. F | 2018-12 | 2.2 Safety Information with a specific symbol for Caution – Hot surface, and text in Notice – Connect external fuse updated, 2.5 Environmental Protection updated to Product disposal, 2.6.1 Agency Approvals table updated, 2.6.3 Declaration of Conformity updated to Simplified Declaration of Conformity, 3.3 Hardware Overview table updated, 4.2 updated with Notice – Connect external fuse, 4.4 symbols for Caution – Hot surface updated, 5.1 Interface specifications updated with inrush current, 5.2 Type Tests and Environmental Conditions – enclosure updated, end page updated |
| Rev. E | 2017-09 | 2.1. Definition of personal injury at Caution level updated, 2.6.1 Mechanical data updated, chapter 3.6 updated, 5.1 Interface Specifications updated – Transmission range for 100 Mbps ports and Gbps ports changed to 150 m, 5.2 Type Tests and Environmental Conditions – Enclosure updated, Radiated + Conducted RF emission updated |
| Rev. D | 2017-07 | New layout for user guide with rearranged chapters, chapter 1 text updated, new chapter 1.5, chapter 2.1 new defining Warning levels, chapter 2.6.1 Agency approvals updated (Shock and NFPA 130), updated text in chapter 3.1, “±” removed from “±2250 VDC” throughout the user |
| Revision | Date | Change description |
| guide, radiated RF immunity, service life, shock, and operating temperature updated in chapter 5.2. Old chapters Getting Started, Configuration, Reference documents, and Cable factory reset are deleted. |
Westermo • Metallverksgatan 6, SE-721 30 Västerås, Sweden
Tel +46 16 42 80 00 Fax +46 16 42 80 01
E-mail: info@westermo.com
www.westermo.com
6641-22511 REV. L 2022 01
Westermo Network Technologies AB, Sweden
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