SDW-550 WESTERMO Industrial Ethernet 5-port Switch

Product Description (Detailed Explanation)

The SDW-550 is a “plug-and-play” industrial switch housed in a slim, rugged metal case. It features five 10/100 Base-TX ports and is designed for DIN-rail mounting. Unlike standard switches, the SDW-550 is built with high-quality industrial components to ensure a high MTBF (Mean Time Between Failures), typically exceeding 1 million hours.

The device operates entirely without software configuration, making it ideal for simple network expansions where reliability is the top priority. It also includes integrated diagnostics via LEDs and a fault relay contact that can signal a power or port failure to an external PLC or alarm system.

Product Parameters (Technical Specifications)

Product Advantages (Key Benefits)

• Industrial Reliability: Built to withstand harsh vibration and shock (IEC 60068-2), making it suitable for trackside or heavy machinery mounting.

• Redundant Power: Supports two independent power sources. If one fails, the switch continues to operate seamlessly, and the fault relay triggers an alert.

• Wide Voltage Range: Accepts anything from 10V to 60V DC, allowing it to work with standard 12V, 24V, or 48V industrial power systems.

• High-Level Isolation: Galvanic isolation on all ports protects connected equipment from ground loops and transient surges.

• Legacy Support: Features a “DIP-switch” configurable mode for forcing speed and duplex settings on specific ports, which is essential for connecting to older legacy hardware.

Precautions (Important Notes)

• Unmanaged Only: This switch does not support VLANs, IGMP Snooping, or STP (Spanning Tree). If your network requires loop protection or traffic management, a managed switch (like the Westermo Lynx series) is required.

• Environment: While it has a wide temperature range, ensure there is at least a 5mm gap between units if operating at the maximum rated temperature (70°C) to allow for heat dissipation.

• Grounding: The DIN-rail clip provides a ground connection, but for maximum EMI protection, the functional earth (FE) terminal on the power connector should be wired to a clean earth point.

• Cable Length: Standard Ethernet limits apply; do not exceed 100 meters (328 ft) for copper Cat5e/6 cables

Product Applications (Typical Use Cases)

• Substation Automation: Connecting IEDs (Intelligent Electronic Devices) in electrical substations where high EMC immunity is required.

• Water & Wastewater: Linking PLCs and HMIs in remote pumping stations or treatment plants.

• Oil & Gas: Reliable data transmission in pipelines and wellhead monitoring systems.

• Infrastructure & Transport: Monitoring trackside equipment, signaling, or tunnel ventilation systems where maintenance access is difficult.

• Factory Automation: Providing a robust network backbone for production lines where electrical noise from motors and drives is prevalent.