GE IS420ESWBH3A ESWB H3 16‑Port IONet Ethernet Switch
Unmanaged Industrial Ethernet Switch for Mark VIe/VIeS Turbine Control, IONet I/O Connectivity & Redundant HSRN Ring Networks
1. Core Product Overview
The GE IS420ESWBH3A is an unmanaged 16‑port IONet Ethernet switch (ESWB H3) designed for Mark VIe/VIeS Speedtronic turbine control systems, providing real‑time data exchange between controllers, I/O packs, and field devices in power generation, oil & gas, and petrochemical applications. It features 16 × 10/100BASE‑TX RJ45 ports (two rows of 8), supporting IONet, HSRN (GE proprietary redundant protocol), IEEE 802.1Q VLAN, and IEEE 1588 PTP for precise time synchronization. The switch operates on dual 24V DC redundant power inputs, with HSRN ring network自愈(<50ms) and non‑blocking switching architecture to ensure reliable, low‑latency communication in harsh industrial environments. It integrates seamlessly with Mark VIe controllers (UCSC/VCMI), WSVO servo drivers, and I/O packs, enabling simplex/dual/TMR system topologies with secure, deterministic IONet data transmission.
• Core Role: Mark VIe IONet I/O connectivity; HSRN redundant ring switching; real‑time turbine control data exchange; I/O pack/controller network interface
• Model Info: IS420ESWBH3A (full part number); ESWB H3 (Ethernet Switch Module H3); Mark VIe/VIeS Speedtronic; 16‑port IONet switch
• Key Specs: 16 × 10/100BASE‑TX RJ45; HSRN ring redundancy; IEEE 1588 PTP; dual 24V DC power; -40°C~+70°C operating temp; IP20 protection
• Reliability: HSRN ring自愈(<50ms); dual power inputs; industrial‑grade shock/vibration resistance; CE/UL certified; 24‑month warranty
2. Port Configuration & Network Redundancy
The IS420ESWBH3A is equipped with 16 10/100BASE‑TX RJ45 ports (two rows of 8) with auto‑negotiation (full/half duplex) and LED indicators (link/activity/speed) for visual status monitoring. It supports HSRN redundant ring topology, enabling seamless failover (<50ms) to maintain network continuity during link failures, and IEEE 1588 PTP for sub‑microsecond time synchronization across Mark VIe components. The switch uses a non‑blocking architecture with dedicated buffers per port to handle broadcast/multicast traffic without packet loss, while IEEE 802.1Q VLAN isolation ensures secure data separation between control, monitoring, and safety networks. It integrates with Mark VIe backplane via VME bus or high‑speed serial links, supporting direct connection to UCSC controllers, I/O packs, and third‑party devices via standard Ethernet protocols.
• Port Design: 16 × 10/100BASE‑TX RJ45 (2 rows × 8); auto‑negotiation (full/half duplex); LED status indicators; 100 Mbps FX uplink (optional)
• Redundancy: HSRN ring network;<50ms自愈; dual 24V DC power inputs; redundant ring port assignment (P1/P2); network fault isolation
• Time Sync: IEEE 1588 PTP (Precision Time Protocol); sub‑microsecond synchronization; Mark VIe system time alignment; I/O data time‑stamping
• Switching Architecture: Non‑blocking; dedicated port buffers; broadcast/multicast storm protection; low‑latency (<1ms) IONet data transmission
3. Power, Integration & Compliance
The IS420ESWBH3A operates on dual 24V DC redundant power inputs (J1/J2), with overvoltage/undervoltage protection and power failure alarm outputs to ensure uninterrupted operation during single power source failure. It connects to Mark VIe controllers (UCSC/VCMI) and I/O packs via VME backplane or high‑speed serial links, supporting IONet for real‑time I/O data exchange and HSRN for redundant network topologies. The switch complies with IEEE 802.3/802.3u/802.3x standards, with IP20 protection, conformal coating, and -40°C~+70°C operating temperature range to withstand dust, vibration, and extreme temperatures in industrial cabinets. It is certified CE, UL 61010, and IEC 61508 (SIL 3 capable in certified architecture), ensuring safe operation in Class I, Div 2/ATEX Zone 2 hazardous locations.
• Power Supply: Dual 24V DC inputs (J1/J2); overvoltage/undervoltage protection; max 10W power consumption; power failure alarm; redundant power switching
• System Integration: Mark VIe UCSC/VCMI compatibility; IONet I/O pack connection; WSVO servo driver interface; HSRN ring topology; ToolboxST network configuration
• Compliance: CE/UL 61010/IEC 61508 (SIL 3); Class I, Div 2/ATEX Zone 2; IEEE 802.3/802.3u/802.3x; industrial EMC immunity (IEC 61000‑4)
• Environmental: -40°C~+70°C operating temp; -40°C~+85°C storage temp; 5–95% non‑condensing humidity; IP20 protection; conformal coating
4. Safety & Industrial Applications
The IS420ESWBH3A is built for industrial safety and reliability, with HSRN ring redundancy to prevent network downtime during link/port failures, ensuring continuous turbine control data transmission. Its dual 24V DC power inputs and power failure alarm support seamless system redundancy, while conformal coating and IP20 protection shield against dust, moisture, and chemical contaminants in harsh industrial settings. The switch meets IEC 61508 SIL 3 requirements in certified architectures, with low‑latency IONet communication for critical safety interlocks (e.g., turbine emergency shutdown). Typical applications include gas/steam turbine control, combined cycle power plants, oil & gas compressors, and petrochemical process control, where reliable, real‑time network connectivity is essential for safe and efficient operation.
• Safety Features: HSRN ring自愈(<50ms); power redundancy; low‑latency IONet for safety interlocks; SIL 3 capability (certified architecture); fault isolation
• Industrial Sectors: Power generation (gas/steam turbines); oil & gas (upstream/midstream); petrochemical; chemical processing; turbine OEMs; critical infrastructure
• System Topologies: Simplex (single switch); dual (redundant pair); TMR (triple HSRN rings); IONet star/ring; HSRN redundant backbone
• Network Security: IEEE 802.1Q VLAN isolation; IONet data encryption; access control via ToolboxST; network fault monitoring; real‑time alarm reporting
5. Installation & Quality Assurance
Installation Notes: DIN‑rail/panel mount; dual 24V DC power connection (J1/J2); HSRN ring port assignment (P1/P2); IONet port labeling; LED status verification; torque 8–10 N·m for terminal blocks.
Configuration: ToolboxST for HSRN setup, VLAN tagging, and PTP time sync; IONet I/O mapping; redundant network testing; switch firmware updates via Ethernet.
Maintenance: Visual LED fault checks; HSRN ring integrity monitoring; power input voltage verification; conformal coating inspection; 6‑month preventive maintenance.
Quality & Warranty: GE genuine module; factory‑tested for Mark VIe compatibility; 24‑month standard warranty; technical support for HSRN/IONet integration and network troubleshooting.
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Technical Documentation | GE IS420ESWBH3A | ESWB H3 16‑Port IONet Ethernet Switch for Mark VIe Turbine Control
