The Honeywell SDW-550 EC, also cataloged as the SDW-550 EC Ethernet Switch, operates as a dedicated hardware component for transparent data packet routing and network traffic management within industrial Ethernet networks.
Hardware Specifications
Parameter
Specification
Model
SDW-550 EC
Brand
Honeywell
Origin
Sweden
Weight
Standard Din-Rail Ethernet Switch Weight
Dimensions
Compact Industrial DIN-Rail Housing
Operating Temp
-40 to +70 deg C
Power Consumption
Dual Redundant DC Power Inputs with Reverse Polarity Protection
Ethernet Ports
5 x 10/100 Base-TX (RJ45, Copper)
Port Functionality
Auto-negotiation, Full/Half Duplex, Auto MDI/MDI-X
Port Isolation
Individually isolated TX port screens
Configuration
DIP switch manual port overrides
Galvanic Isolation & Process Network Communications
Designed for noise-immune network infrastructure, the SDW-550 EC features individually isolated TX port screens to eliminate ground loop currents across distributed network segments. The 5-port unmanaged switch supports auto-negotiation, auto MDI/MDI-X, and hardware DIP-switch overrides for manual velocity and duplex locking. When deployed alongside process control platforms and 4-20 mA HART instrumentation, its dual-input redundant power supply architecture prevents single-point power failures and isolates control communication traffic from high-voltage transient spikes.
Frequently Asked Questions
Q: How does the SDW-550 EC prevent ground loop issues across long copper Ethernet cable runs?
A: Each RJ-45 TX port features individually isolated shielding, preventing ground potential differences between networked devices from passing loop currents through the cable screen.
Q: Can speed and duplex modes be forced manually on the SDW-550 EC ports?
A: Yes, onboard DIP switches allow auto-negotiation to be disabled so each 10/100 Mbit/s port can be forced to specific speed and full/half duplex settings.
Field Installation Guidelines
Mount the switch securely on a standard 35 mm DIN rail inside an enclosure, ensuring vertical clearance for passive airflow.
Connect primary and secondary DC power sources to the terminal block to establish dual-power redundancy.
Terminate shielded RJ-45 cables into the 10/100 Base-TX ports; auto MDI/MDI-X handles straight-through or crossover cable mapping automatically.
Verify that the enclosure frame is bonded to the main earth ground rail to optimize transient surge suppression.
Set port configuration DIP switches to auto-negotiation or forced modes prior to applying system DC power.
