The Viper-012 is a basic unmanaged 12 port switch designed to meet the full requirements of the rail vehicle market. The incredibly compact and robust housing ensures the unit can be built into tight and environmentally hostile spaces.

As is critical for all equipment to be installed in rail vehicles, the Viper has been externally tested across the complete spectrum of standards required by EN50155.

 

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Westermo understand that systems on railcars are required by the EN50155 standard to have a useful life of 20 years, so as well as using the highest quality components to deliver extended MTBF figures, we also implement features like the Gore-Tex® membrane in the IP65 enclosure to prevent water build up in the units. Due to the high vibration environment of the rail industry, we have also developed the Viper case with integral threading for the M12 connectors to ensure the IP65 seal is maintained for the life of the product.

 

The EN50155 standard requires mandatory performance and isolation testing. Not only does Westermo meet these, we exceed them in order to meet the additional manufacturer requirements for train control. Westermo’s Swedish factory has been building Ethernet switches for the railcar market for many years now and understands the measures that are required to provide the highest quality manufactured solutions.

 

Viper-012

Product description
Status	Active
Article number	3641-0540
Ports	12 x 10/100BaseTX, M12 contact 1 x USB 2.0 host interface 1 x RS-232, 115.2 kbit/s
Description	EN 50155 Routing Switch
Warranty period	5 Years
Standard compliance
Environmental	EN 61373:1999, Railway applications – Rolling stock equipment. Shock and vibration tests IEEE1478:2001, Environmental conditions for transit rail car electronic equipment EN 50124-1: 2001+A1:2003+A2:2005, Railway applications – Insulation coordination Fire safety standard CEN 45545-2
Reliability prediction
MTBF, operating	636 000 h (MIL-HDBK-217F (Gb) 25°C)
Service life, operating	15 years
EMC (Electromagnetic Compatibility)
EN 61000-6-1	Immunity residential environments
EN 61000-6-2	Immunity industrial environments
EN 61000-6-3	Emission standard for residential, commercial and light-industrial environments.
EN 61000-6-4	Emission industrial environments
EN 55022 +A1	Emission IT equipment
EN 55024	Immunity IT equipment
FCC part 15	Class B
EN 50121-4	Railway signaling and telecommunications apparatus
EN-50121-3-2	Railway applications –Rolling stock – apparatus
EN-50155	Railway applications – Electronic equipment used on rolling stock
IEC 62236-4	Railway signaling and telecommunications apparatus
EMC specifications
EN 61000-4-2, ESD	Enclosure: Contact: ±6 kV Air: ±8 kV
EN 61000-4-4, fast transients	Power port, ±5 kV Signal ports, ±5 kV Earth port, ±1 kV
EN 61000-4-5, surge	Power port: L-E: ±0.5 kV, 12 Ω, 9 μF, 1.2/50 μs L-L: ±0.5 kV, 2Ω, 18 μF, 1.2/50 μs L-E: ±2 kV, 42 Ω, 0.5 μF, 1.2/50 μs L-L: ±2 kV, 42Ω, 0.5 μF, 1.2/50 μs L-E: ±8.4 kV, 100 Ω, 0.05/0.1 μs L-L: ±8.4 kV, 100 Ω, 0.05/0.1 μs Ethernet ports: L-E: ±1 kV, 2 Ω L-E: ±2 kV, 42Ω, 0.5 μF
EN 61000-4-8, power frequency magnetic field	Enclosure, 300 A/m; 0, 16.7, 50, 60 Hz
EN 61000-4-9, pulsed magnetic field	Enclosure, 300 A/m
IEC 61000-4-3, RF field AM modulated	Enclosure, 20 V/m @ (80 MHz – 2.7 GHz), 1 kHz sine, 80% AM
EN 61000-4-6, conducted RF immunity	Power port, 10 V, 80% AM, 1 kHz; (0.15 – 80) MHz Ethernet ports, 10 V, 80% AM, 1 kHz; (0.15 – 80) MHz Earth port, 10 V, 80% AM, 1 kHz; (0.15 – 80) MHz
EN 55022, radiated RF emission	Enclosure, class B Power port, class B Ethernet ports, class B
FCC part 15, radiated RF emission	Enclosure, class B
Safety
EN 60950-1, dielectric strength	Power port to all other ports, 1.5 kV ACrms, 50 Hz, 1 min Ethernet ports to all other ports, 1.5 kV ACrms, 50 Hz, 1 min
Safety	EN 60950-1, IT equipment
Climatic
Temperature, operating	–40 to +70ºC (–40 to +158ºF)
Temperature, storage	–50 to +85°C (–58 to +185°F)
Humidity, operating	5 to 95 % relative humidity
Humidity, storage	5 to 95 % relative humidity
Enclosure
Enclosure	Zinc, fire enclosure.
Dimensions (W x H x D)	175 x 62.5 x 100 mm (6.9 x 2.5 x 3.9 in)
Weight	1.4 kg
Degree of protection	IP 65
Cooling	Convection
Mounting	-
Mechanical
IEC 60068-2-6, vibration	Non operating long life simulation, 7.9 m/s² (RMS) 5 – 150 Hz
Vibration, random functional	Operating, 1 m/s² (RMS) 5 – 150 Hz
IEC-60068-2-27, shock	Operating, 5 g, 30 ms
IEC 60068-2-27, bump	Operating, 10 g, 11 ms
Interface specifications, power
Operating voltage	Rated: 24 to 110 VDC Operating: 24 to 110 VDC ± 30% Operating for 100 ms: 24 to 110 VDC ±40%
Rated current	350 mA @ 24 V and 90 mA @ 110 V
Rated frequency	DC
Inrush current	1 mA²s @ 24V and 6 mA²s @ 110V
Startup current	400 mA
Polarity	Reverse polarity protected
Redundant power input	Yes
Isolation to	1500 VAC rms to all other
Connection	4 pin male M12 A-coded connector, use Westermo cable 3146-1106 for 1.5 m 3146-1107 for 5 m
Connector size	M12, recommended cable area 0.5 mm² recommended (minimum 0.25 mm²), cable dimensions depend on choice of M12 connector
Interface specifications, 10/100BaseTX
Electrical specification	IEEE IEEE std 802.3. 2005 Edition
Data rate	10 Mbit/s, 100 Mbit/s, 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	Other Ethernet ports, 1500 VAC rms USB and CON or SRV1 and SRV2, 1500 VAC rms DC, 1500 VAC rms
Connection	4-pin M12 D-code, auto MDI/MDI-X, use e g Westermo cable 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	Not required, but recommended in severe electromagnetic environments
Conductive housing	Yes
Number of ports	12
Interface specifications, service
Isolation to	Service ports that must not be used: Ethernet ports, 1500 VAC rms DC, 1500 VAC rms No isolation between SRV1 and SRV2