Coupled-Switch

On-board Ethernet Switch
Coupled-Switch image

The Coupled-Switch© is designed to implement a fault tolerant Ethernet network solution. Due to specific hardware and software features, this device, properly integrated in a network, gives several benefits compared to a standard solution. Typically, fault tolerant protocols are topology dependent and usually single point fault tolerant, whereas this solution offers a higher resilience and a fixed recovery time. Moreover the Coupled-Switch© solution can connect end devices to two different switches using Dual-Homing connections for a full redundant solution. The Coupled-Switch© solution is composed by a couple of 13 Ethernet ports switches with advanced traffic switching capabilities, including support for VLANs and the possibility to apply Quality of Service (QoS) policies. This proposal requires a double connection between the two switches equipped with a hardware bypass. The Coupled-Switch© allows the connection of up to 7 PoE End-Devices in Dual-Homing configuration, ensuring the required redundancy. Available in different models, the Coupled-Switch© supports 24 Vdc to 110 Vdc nominal voltage input and is designed to operate in harsh environmental conditions typical of rolling stock applications.The Coupled-Switch© solution is fully EN 50155 compliant and provides the highest level of reliability and robustness required by the railway industry

Technical specifications

Approvals/Compliance

> Governing Standard EN 50155 Railway Applications (Electronic equipment used on rolling stock)

Approvals/Compliance (EMC)

> Electrical fast transient/burst immunity test IEC 61000-4-4 (2004-07)
> Electromagnetic compatibility rolling stock apparatus EN 50121-3-2
> Electrostatic discharge immunity test IEC 61000-4-2 (2008-12)
> Radiated, radio-frequency, electromagnetic field immunity test IEC 61000-4-3 (2006-02)
> Surge immunity test IEC 61000-4-5 (2005-11)

Approvals/Compliance (Environment)

> Environmental testing - Part 2-1: Tests - Test A: Cold IEC 60068-2-1
> Environmental testing - Part 2-2: Tests - Test B: Dry heat IEC 60068-2-2
> Shock & Vibration EN 61373

Environment

> Operating temperature -25 ÷ +55 °C (+70 °C for 10 min. according to EN50155 class T1)
-25 ÷ +70 °C (+85 °C for 10 min. according to EN50155 class T3) [optional]
-40 ÷ +70 °C (+85 °C for 10 min. according to EN50155 class TX) [optional]
> Relative humidity (non condensing) up to 95%
> Storage temperature -40 ÷ +85 °C

Features

> 4 output hardware queues for each port
> 802.1X port authentication
> Device bypasses for maximun reliability
> DHCP option 82 handling
> Extended RMON counters
> Fallback firmware images for maximum reliability
> IEEE 802.3 layer 2 managed switch
> IEEE 802.3af PoE delivered on 8 ports
> IGMP versions 1, 2 and 3 snooping
> In-band (SSH) and out-of-band (console) CLI interface for device management
> In-band and out-of-band firmware upgrade
> Ingress rate limiting
> IPv4 protocol supported
> RADIUS authentication
> Simple Network Management Protocol (SNMP) v1/v2c/v3
> Train Topology and Configuration Management Protocol (TTCMP©) for automatic device management
> Up to 13 Fast Ethernet ports or 5 Gigabit Ethernet ports + 8 Fast Ethernet ports

Internetworking standards

> IEEE 802.1AB Link Layer Discovery Protocol (LLDP)
> IEEE 802.1D Spanning Tree Protocol
> IEEE 802.1Q Tagged VLANs
> IEEE 802.1w Rapid Spanning Tree
> IEEE 802.1X Port-based network access control
> IEEE 802.3ab Gigabit Ethernet
> IEEE 802.3ad Link Aggregation Protocol (LACP)
> IEEE 802.3af Power over Ethernet (PoE)
> IEEE 802.3u Fast Ethernet

IP services

> Integrated per-port DHCP server

Packet switching

> DSCP/802.1p Class of Service
> Link aggregation protocol (LACP 802.3ad)
> Link Layer Discovery Protocol (LLDP 802.1ab) with LLDP-MED extensions
> Spanning tree (STP 802.1D) and Rapid Spanning Tree (RSTP 802.1w)
> Strict priority or weighted (WRR) scheduler
> Up to 4096 802.1Q VLANs

Physical data

> Degree of protection IP 40
IP54, IP65 [optional]
> Fast Ethernet connectors M12, female, 4-ways, D-coding
> Gigabit Ethernet connectors M12, female, 8-ways, X-coding
> Maintenance ports connectors M12, female, 5-ways, A-coding
> Overall dimensions 207 x 184 x 51 mm (24 Vdc, without PoE)
207 x 184 x 73 mm (24 Vdc, with PoE)
207 x 184 x 73 mm (96/110 Vdc, with or without PoE)
> System status indicators 8 LEDs
> Weight 2,0 Kg (24 Vdc version)
2,5 Kg (96/110 Vdc version)

Power supply

> Max current 0,2 A @ 110 Vdc
0,6 A @ 24 Vdc
> PoE class 0, 1, 2, 3 and 4 (max 15 W per port), according to IEEE 802.3at Type-1
> PoE total power 60 W
> Power consumption 15 W (without PoE)
> Power supply class S2, according to EN-50155
> Power supply connector M12, male, 4-ways, A-coding
> Voltage range 14,4 ÷ 40 Vdc (24 Vdc nominal, insulated)
66 ÷ 165 Vdc (96/110 Vdc nominal, insulated)
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VAT: IT01678370485 - Share capital: 99.000€ fully paid
Registered office VDS Rail Srl Via Arno, 23-25, 50019 Sesto Fiorentino (FI) Italy.