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Core Hardware and Port Configuration
Port Combination: 8 x 10/100Base-TX RJ45 copper ports + 2 x 100Base-FX multimode fiber optic LC ports; supports HP-MDIX auto-sequencing, 10/100M auto-negotiation, full/half-duplex negotiation, and IEEE 802.3x flow control; the RJ45 copper ports are resistant to 200 mating cycles.
Buffer and Address: 256KB buffer, 4K MAC address table, collision-free full-switching architecture, ensuring no packet loss in real-time control data.
Power Supply and Hot-Swapping: 24–28VDC redundant power input (diode OR protection), supports hot-swapping; DIN rail mounting requires dedicated clips (259B2451BVP1 for parallel rails, BVP2 for vertical rails).
Key Technical Parameters Table
Parameter Value
Model IS420ESWAH2A (Mark VIe ESWA IONet Switch)
Compatible Systems Mark VIe / Mark VIeS (Turbine Control, SIS Safety System)
Operating Temperature -40℃ to +70℃; Storage -40℃ to +85℃
Certifications Class 1 Div 2, ATEX, CE/UL; G3 Compliant; Suitable for Hazardous Areas
Communication Standards IEEE 802.3, 802.3u, 802.3x
Diagnostics Port-level LEDs (Power, Link, Activity, Speed/Duplex), ControlST Remote Network Status View
DIN Rail Mounting, Natural Convection Cooling, Fanless
Email: xmxblynn@163.com
Phone: +86 18059884797
Redundancy and Safety Features
Dual Redundancy: Power supply redundancy + dual fiber optic ports, combined with IONet A/B dual links, allowing seamless switching in case of single link/single power supply failure;
Interference Resistance: Metal casing, strong EMC performance, suitable for strong electromagnetic and vibration shock environments such as power plants and petrochemical plants;
Explosion-proof Compliance: Class 1 Div 2/ATEX, can be directly deployed in control cabinets in hazardous areas.
Typical Applications and Deployment Recommendations
Fully Redundant IONet Backbone: Dual fiber optic ports connect to the IONet A/B ring network respectively, while copper cable ports connect to local I/O modules and controllers; compared to the single fiber optic port H1A, closed-loop redundancy can be formed without additional switches;
Turbine Unit Control Network: The communication layer of the gas/steam turbine Mark VIeS TMR system, connecting vibration/displacement modules, safety controllers, and operator stations;
Long-Distance Anti-Interference Link: Fiber optic transmission replaces copper cables, avoiding strong electromagnetic interference in the plant area, suitable for interconnecting control networks across plant buildings;
Spare Parts Upgrade: Directly replaces older ESWAH1A, improving network redundancy; no configuration changes are required during replacement, plug and play.
Key differences between IS420ESWAH1A and IS420ESWAH2A:
Item: IS420ESWAH2A IS420ESWAH1A
Fiber Ports: 2 x 100Base-FX multimode LC, 1 x 100Base-FX multimode LC
Redundancy: Can independently build A/B dual fiber rings; Requires paired switches for ring network construction
Applicable Scenarios: Core redundant backbone, long-distance anti-interference links, branch access, single-link extension
Email: xmxblynn@163.com
Phone: +86 18059884797
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