RS2 - Unmanaged 8-Port Ethernet Switch with PoE

RS2 configuration example without Ethernet uplink

The RS2 is an industrial, IP67 stand-alone Fast Ethernet switch. It is unmanaged and provides eight Ethernet channels and a Gigabit uplink port on M12 connectors.

The rugged switch supports full-duplex and half-duplex operation with auto-negotiation, high-speed non-blocking store-and-forward switching, Quality of Service (QoS) support with four traffic classes IEEE 802.1p and three-level 802.1x security. The switch is fault tolerant and restores itself on its own: If a link is temporarily unavailable, frames can be sent via backup/redundant links (link aggregation) and no data loss occurs. Its built-in test mechanisms make the RS2 an even more reliable component in the communication system.

By using an application-specific configuration EEPROM, the RS2 can act similarly to a managed switch with fixed settings. This enables features untypical for unmanaged models like 802.1p priority and port based priority, port based VLAN or IEEE 802.1q VLAN IDs. Additionally, a service port is accessible at thefront panel on an M12 connector, enabling authorized personnel to configure the switch via an SPI interface.

The RS2 has two power inputs on M12 connectors, making it possible to connect a backup power source (e.g., a battery). If the primary supply fails, the unit switches to the secondary supply automatically. The unit offers Power over Ethernet (PoE) PSE functionality to supply two other devices on ports 1 and 2.

The RS2 is one of the first members of the MIPIOS family of extremely rugged IP67 compliant products designed for Ethernet connectivity and highly demanding applications, e.g., for redundancy systems.

The industrial-grade unit is fully compliant with EN 50155 railway standard. All components inside the enclosure are specified for -40..+85°C operation, thus enabling the device for EN 50155 class Tx operation. Additionally, the device is is compliant to ISO 7637-2 (E-mark for automotive). Convection cooling is sufficient. There are no socketed components, hardening the box against shock and vibration. The internal electronics are prepared for conformal coating.

The Ethernet switch is prepared for wall or DIN-rail mounting.

Unmanaged 8-port rugged Ethernet switch
Rugged aluminum enclosure (220 x 130 x 70 mm)
Fanless and maintenance-free
8 Fast Ethernet ports via M12 connectors
Power over Ethernet (PoE) PSE (ports 1 and 2)
2x 24 VDC or 110 VDC nom. redundant power supply, service interface via M12 connectors
Status LEDs for ports, PoE and switch state
-40 to +70(+85)°C operating temperature
EN 50155 class Tx (railways) and IP67 compliant
ISO 7637-2 compliant (E-mark for automotive)

Key Features

High-speed non-blocking, store-and-forward switching
Eight 10/100Base-T ports at front panel (Electrical isolation: 1500 Vrms)
One Gigabit uplink port at front panel
Port configuration: copper, 10/100 Mbit/s
Auto-negotiation / Auto MDI/MDIX crossover on all ports
Layer2-based Policy Control List
8K MAC address lookup table with automatic learning and aging
Up to 4096 VLANs

Supported Protocols and Standards

Ethernet flow control (IEEE 802.3x)
Link aggregation LACP / EtherChannel (IEEE 802.3ad, 2005)
Priority-based switching, Quality of Service/DiffServ, tagged frames, Layer2-based 801.1Q VLAN-ID packet routing (IEEE 802.1p)
Port-based authentication on registered MAC Address Lists
Power over Ethernet support (IEEE 802.3af / IEEE 802.3at, Type 1)
TCP/IP v4 and v6
VLAN/port-based VLANs GVRP/MVRP (IEEE 802.1Q Rev D5.0, 2005)

Power Over Ethernet Features

Power over Ethernet functions on ports 1 and 2

PSE (Power Sourcing Equipment) function
Supplies one PD class 0 device or two PD class 2 devices (up to 15 W total)

Service Interface

M12 connector at front
SPI interface for external SPI programmer

Front I/O

Eight Ethernet ports via M12 connectors
Gigabit uplink port
- 8-pin M12 connector, A-coded
One service interface via M12 connector
Two redundant power inputs via M12 connectors
Link and activity Ethernet status LEDs (two per channel)
Power over Ethernet status LEDs
Status LEDs for power and reset

Electrical Specifications

Power input
- Nominal input voltage 24 VDC (9 to 36 V) or 110 VDC (77 to 150 V) according to EN 50155
- Two redundant inputs
- Power-on threshold: 0.7xUn = 16.8 V (for 24 VDC PSU) or 77 V (for 110 VDC PSU)
- Power change-over threshold (when a secondary power source is connected): 12 V (for 24 VDC PSU) or 66 V (for 110 VDC PSU) (lower input voltage results in automatic switch to secondary power source)
- Minimum input voltage when no secondary power source is connected: 9 V (for 24 VDC PSU) or 66 V (for 110 VDC PSU)
EN 50155 power interruption class S2
Isolation (according to EN 50155)
- 1500 Vrms
Power consumption at Unom (24 V): 24 W (incl. 15 W PoE)

Mechanical Specifications

Dimensions: 220 mm x 130 mm x 70 mm (without connectors)
Prepared for wall or DIN-rail mounting with special mounting plates (available separately)
Weight: 1.9 kg

Environmental Specifications

Temperature range (operation):
- -40..+70°C (+85°C) with up to 85°C for 10 minutes according to class TX (EN 50155)
- Airflow: natural convection
Temperature range (storage): -40..+85°C
Relative humidity (operation): max. 95% non-condensing
Relative humidity (storage): max. 95% non-condensing
Altitude: -300 m to + 3000 m
Shock: 50 m/s², 30 ms (EN 61373)
Vibration (function): 1 m/s², 5 Hz - 150 Hz (EN 61373)
Vibration (lifetime): 7.9 m/s², 5 Hz - 150 Hz (EN 61373)
Climatic tests according to EN68068
IP67 compliant
Fully EN 50155-compliant (Power Interruption Class 2, Temperature Class TX)

MTBF

292 031 h @ 40°C according to IEC/TR 62380 (RDF 2000)

Safety

Flammability (PCBs)

PCBs manufactured with a flammability rating of 94V-0 by UL recognized manufacturers

EMC

Tested according to the following railway standards:
- EN50121 (radio disturbance)
- EN61000-4-2 (ESD)
- EN61000-4-4 (burst)
- EN61000-4-5 (surge)
Conforming to E1 requirements of the German Federal Motor Transport Authority
Tested according to the following automotive standards:
- CISPR25/CISPR16 (radiated emission)
- ISO7637-2 (conducted emission - power line)
- ISO7637-2 (conductive immunity - power line)
- ISO7637-3 (capacitive immunity - signal line)
- ISO11452-2, ISO11452-5 (radiation immunity)
- EN50121 (radio disturbance)

RS2 - Unmanaged 8-Port Ethernet Switch with PoE (Product Discontinued)

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