GE Mark VIe IONet Ethernet Switch IS420ESWAH3A In stock

The IS420ESWAH3A is a copper‑only unmanaged industrial Ethernet switch purpose‑built for GE‘s Mark VIe and Mark VIeS Speedtronic turbine control platforms. Designed exclusively for the IONet (Internal Operating Network), the IS420ESWAH3A provides eight 10/100Base‑TX RJ45 copper ports with automatic speed negotiation, MDIX crossover detection, and IEEE 802.3x flow control. The IS420ESWAH3A eliminates unused fibre ports and reduces potential failure points in local control cabinet applications. With dual‑redundant 24/28 V DC power inputs, fanless convection cooling, and an extended –40 °C to +70 °C operating range, the IS420ESWAH3A delivers deterministic, low‑latency switching for real‑time turbine I/O loops in harsh power generation environments.

• Local copper‑only I/O networks in Mark VIe gas and steam turbine control cabinets

• IONet backbone switching for connecting UCV controllers, distributed I/O packs, and local HMIs

• Short‑range industrial control networks where copper cabling is sufficient and fibre uplinks are unnecessary

• Hazardous location installations (Class I Div 2 / ATEX Zone 2) with appropriate enclosure

• Retrofit of legacy control system networks requiring a simple, unmanaged, high‑reliability switch

• Petrochemical and refining facilities requiring redundant power and deterministic communication

• 8 high‑density copper ports: Eight 10/100Base‑TX RJ45 ports provide ample connectivity for I/O packs, controllers, and HMIs in local control cabinets; eliminates unused fibre ports to reduce material cost and potential failure points.

• Pure copper‑only design: No fibre uplinks — simplifies installation and maintenance in short‑range control networks, reduces cabinet space and component count.

• Unmanaged plug‑and‑play operation: No IP addressing, VLAN configuration, or network management required; pre‑optimised by GE for deterministic real‑time IONet traffic profiles.

• Dual‑redundant 24/28 V DC power inputs: Two independent power terminals (TB1, TB2) with diode‑OR’d architecture; automatic failover if one power supply fails, ensuring continuous operation.

• Store‑and‑forward switching with pause flow control: 256 KB buffer and IEEE 802.3x pause frames prevent packet collisions and buffer overflow, guaranteeing deterministic data delivery.

• 4,000 MAC address table: Supports large networks with many distributed I/O nodes, controllers, and HMI devices without performance degradation.

• Soft‑start inrush current limiting: Limits inrush current to less than 200 % of normal operating current, protecting external power supplies during system power‑up.

• Wide industrial operating temperature: –40 °C to +70 °C — fanless convection cooling and G3 conformal coating for corrosion resistance, salt‑fog tested.

• Hazardous location certified: UL Class I, Division 2, Groups A‑D; ATEX Zone 2; IECEx — suitable for deployment in explosive atmospheres with appropriate enclosure.

• IEC 61508 SIL 2 safety rated: Certified for use in safety instrumented systems (SIS) requiring functional safety compliance.

• Comprehensive LED diagnostics: Per‑port bi‑colour LEDs provide immediate visual feedback for link presence, activity (flashing green = full duplex, flashing yellow = half duplex), speed (green = 100 Mbps, yellow = 10 Mbps), and power status.

• Fanless convection cooling: No moving parts, eliminating mechanical failure points and reducing maintenance requirements in dusty, high‑vibration environments.

• DIN rail or panel mountable: Supports both mounting methods with optional qualified mounting clips; flexible orientation (vertical or horizontal) for crowded control cabinets.

• Low power consumption (5 W typical): Minimal thermal load on the switch and surrounding components, enabling higher packing density in control cabinets.

• Exceeds 4 million hours MTBF @ 35 °C: High reliability design ensures long service life with minimal maintenance intervention.

• HP‑MDIX auto‑sensing: Automatically detects and corrects for straight‑through or crossover cables on all RJ45 ports, eliminating the need for specialised cabling.

• Switches and buffers real‑time I/O data, controller status, and HMI traffic between connected Mark VIe/VIeS controllers, I/O packs, and HMI stations over the IONet.

• Automatically negotiates 10/100 Mbps speed and full/half‑duplex mode on each copper port based on the capabilities of connected field devices, eliminating manual port configuration.

• Performs collision‑free full‑duplex switching across all eight ports, preventing packet collisions and ensuring deterministic latency for time‑sensitive turbine control loops.

• Maintains deterministic data forwarding in copper‑only networks without requiring external media converters or protocol translation devices.

• Delivers real‑time port status and network health information via bi‑colour per‑port LEDs, enabling rapid on‑site troubleshooting without external diagnostic software.

• Electrically isolates redundant power inputs via diode‑OR’d architecture; if the primary power rail fails, the secondary rail automatically assumes load with no interruption to switch operation.

• Provides passive store‑and‑forward packet processing with pause frame flow control, buffering incoming traffic and preventing data loss when downstream ports are congested.

• Operates continuously in extreme environments (–40 °C to +70 °C) with fanless convection cooling, eliminating moving parts that can fail in dusty or vibration‑prone turbine control cabinets.

• Accepts dual redundant 24/28 V DC power inputs (range 18–36 V DC) from standard Mark VIe control power distribution boards (JPDS, JPDG, JPDH) or external industrial power supplies.

• Synchronises distributed I/O packs and controllers using IEEE 1588 Precision Time Protocol (PTP), maintaining ≤ 1 µs time alignment for coordinated event time‑stamping and sequence‑of‑event recording.

Q1: What is the IS420ESWAH3A used for?
A1: The IS420ESWAH3A is a copper‑only unmanaged industrial Ethernet switch that serves as the central networking hub for GE Mark VIe/VIeS IONet in local turbine control cabinets, connecting controllers, I/O packs, and HMIs.

Q2: How many and what type of ports does the IS420ESWAH3A have?
A2: The IS420ESWAH3A has 8 × 10/100Base‑TX copper RJ45 ports. It has no fibre ports — this is a pure copper‑only model designed for local control networks.

Q3: What is the operating temperature range of the IS420ESWAH3A?
A3: The IS420ESWAH3A operates from –40 °C to +70 °C with fanless convection cooling and G3 conformal coating, making it suitable for outdoor turbine enclosures and unheated industrial cabinets.

Q4: Does the IS420ESWAH3A support redundant power inputs?
A4: Yes. The IS420ESWAH3A features two independent 24/28 V DC power inputs (TB1 and TB2) that are diode‑OR’d. If one power supply fails, the switch continues operating from the remaining healthy supply.

Q5: Is the IS420ESWAH3A certified for hazardous locations?
A5: Yes, the IS420ESWAH3A is certified for UL Class I, Division 2, Groups A‑D and ATEX Zone 2 hazardous (classified) locations. It also carries IEC 61508 SIL 2 safety certification for use in safety instrumented systems.

Inguiry Now: [email protected]