Description

SDW‑550EC Honeywell Industrial Ethernet Switch

Technical Specifications

• Part Number: SDW‑550EC
• Brand: Honeywell
• Warranty: One Year
• Input Voltage: 9.6‑57.6 VDC dual redundant power input; nominal 12‑48 VDC; max power consumption 4.5 WManualsLib
• Operating Temperature: ‑40 °C ~ +75 °C cabinet‑mount installation; fan‑less convection cooling
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Layer‑2 store‑and‑forward switching; supports industrial real‑time control‑network timing requirements
• Protection Class: IP30 metal housing; DIN‑rail TS35 mounting; full galvanic isolation between each port; polarity‑reverse protection on power supply
• Accuracy Class: Unmanaged industrial switch; no process‑measurement functions
• Ports: 5 × RJ45 10/100 Mbps copper ports; DIP‑switches for fixed speed/duplex locking (disable auto‑negotiation for legacy DCS devices)
• Communication Interface: Removable screw‑clamp power terminals; front‑panel LED indicators for Power, Link, Activity; DIP‑switch configuration bank
• Supported Protocols: IEEE802.3, 802.3u, 802.3x flow‑control; compatible with Honeywell Experion DCS control network; plug‑and‑play unmanaged operation, no IP address / web‑UI required
• Overload Capacity: Port‑by‑port ESD & surge‑voltage suppression; broadcast‑storm buffering; no routing capability
• Dimensions: 130 mm × 85 mm × 45 mm; weight approx 0.4 kg

Product Overview

The SDW‑550EC is Honeywell‑branded industrial unmanaged Ethernet switch built on Westermo SDW‑550 hardware platform, dedicated for Experion DCS control‑system backbone networks. It provides robust isolated Ethernet interconnection for controllers, remote I/O nodes and HMI stations inside power‑plant and petrochemical‑plant control cabinets. DIP‑switches allow locking port speed/duplex mode to avoid auto‑negotiation instability when connecting older legacy DCS hardware. Dual power inputs support redundant power feeding for high‑availability DCS networks.

This switch addresses industrial‑network challenges: full‑port galvanic isolation eliminating ground‑loop noise interference, wide temperature fan‑less operation for harsh plant‑cabinet environments, and drop‑in spare‑part compatibility for existing Honeywell Experion retrofit‑maintenance projects. DCS control engineers, power‑plant maintenance technicians and system‑retrofit integrators benefit most. It applies for power‑utility, oil‑gas and petrochemical plant DCS control‑network star‑topology deployment.

Key Application Notes

• DCS‑dedicated unmanaged switch; cannot substitute with standard commercial office‑grade switches
• Dual redundant DC power supply recommended for critical DCS control‑networks
• DIP‑switch setting must match connected legacy DCS device communication parameters; mis‑configuration will cause link‑instability
• Not hot‑swap hardware: power supply shall be fully removed before module replacement
• Install only inside safe‑area cabinet; not for direct hazardous‑area field‑mounting
• Conformal‑coated hardware variant available for high‑humidity, high‑contaminant cabinet environments
• OEM active production; widely‑used spare for Honeywell Experion DCS maintenance‑retrofit projects