PRODUCT IDENTIFICATION & SCOPE
SYSTEM HARDWARE TOPOLOGY
The Switch Series adopts a fanless, conduction-cooled chassis leveraging a monocrystalline aluminum-magnesium-silicon alloy heatsink. The system topology bifurcates into a fixed-port I/O panel and a rear-module expansion bay for M12 or M23 circular connector adapters. The internal backplane supports a 16 Gbps non-blocking shared memory switch fabric. Key hardware nodes include:
– Power Input Module (PIM): Dual isolated 24/36/48/72/110 VDC nominal inputs (16.8 VDC to 137.5 VDC range).
– CPU Module: ARM Cortex-A9 800 MHz with 256 MB DDR3 SDRAM and 64 MB NOR flash.
– PHY Layer: Automotive-grade BroadReach PHY with 2 kV magnetic isolation per port.
DATA & CONTROL PLANE CAPABILITIES
Forwarding paradigm: Store-and-forward with cut-through configurable on per-port basis. Control plane integrates an industrial protocol gateway (TRDP, MVB over Ethernet, PROFINET, Ethernet/IP). The platform supports VLAN (4k active), IGMP snooping v2/v3, Rapid Spanning Tree (RSTP/MSTP), and an onboard Dying Gasp interrupt for power-loss event capture.
COMPONENT BREAKDOWN – INTEGRATED SUBSYSTEMS
– Ethernet Ports: 8x 10/100/1000BASE-TX via M12 X-coded (IP67) OR 4x 100BASE-FX and 4x 10/100/1000BASE-T (M12 A-coded).
– SFP Slots: 2x Gigabit SFP (100/1000BASE-X) supporting -40°C to +85°C industrial SFPs.
– Console: 1x RS-232 via M12 A-coded, CLI accessible.
– Alarm Relay: 2x Dry contact Form-C relay (1A@30VDC) for system health monitoring.
– Storage: microSD slot up to 32 GB for event logging and firmware upgrade.
OPERATIONAL SPECS MATRIX
| Parameter | Specification |
|---|---|
| Form Factor | IP40 rugged aluminum, wall/DIN rail mount (160mm x 150mm x 65mm) |
| Switching Capacity | 12.8 Gbps (non-blocking, full duplex) |
| Power Supply | Dual isolated 16.8-137.5 VDC, 1+1 hot-standby, 12W max consumption |
| MTBF (Mean Time Between Failures) | 856,000 hours (Telcordia SR-332, 40°C GB) |
| Ingress Protection | IP40 (unit), IP67 (cabled ports with M12 connectors) |
| Forwarding Rate | 9.52 Mpps (64-byte frames) |
| MAC Table Size | 8K entries |
| Jumbo Frame Support | 9,216 bytes |
| Surge Protection | Common mode: ±2 kV, Differential mode: ±1 kV (per EN61000-4-5) |
REGULATORY COMPLIANCE – EN50155 EXTENDED MANDATE
The Switch Series holds full conformance to the following railway standards:
– EN 50155 (2017) Class OT4 (-40°C to +85°C operating ambient), Tx (-40°C to +70°C with solar radiation).
– EN 50121-3-2 (EMC for rolling stock apparatus – immunity & emissions).
– EN 45545-2 (Fire safety – Hazard Level HL3).
– IEC 61373 Category 1 Class B (Shock & vibration – Body mounted).
– EN 50153 (Electrical safety protective provisions).
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