GE IS200ERSDG1A Ethernet Switch Board (ERSD)

The GE IS200ERSDG1A is a managed Ethernet switch module designed for the Mark VIe control system platform. It provides high‑performance switching for control network traffic, enabling the construction of redundant, deterministic networks required for turbine and generator control. With eight 10/100 Mbps ports and advanced management features, the ERSD board ensures reliable and secure data exchange between controllers, I/O adapters, and operator workstations.

Key Features

• Eight 10/100Base‑T Ethernet ports (RJ45) with auto‑negotiation

• Managed switch functions: VLAN (IEEE 802.1Q), QoS (IEEE 802.1p), IGMP snooping, port mirroring

• Support for ring redundancy protocols (e.g., Rapid Spanning Tree, proprietary GE ring)

• On‑board diagnostics with status LEDs per port and system health

• Compact module for direct insertion into Mark VIe rack

• Redundant power supply inputs from backplane

• Configuration via web interface, SNMP, or ToolboxST

Technical Specifications

Network Redundancy and Reliability

The IS200ERSDG1A supports various redundancy mechanisms to achieve high availability. Using Rapid Spanning Tree Protocol (RSTP) or GE’s proprietary ring protocol, it can recover from link failures in sub‑second times. VLANs allow segmentation of control traffic from other data, improving security and performance. Quality of Service (QoS) prioritizes time‑critical messages such as I/O data and inter‑controller synchronization over less urgent traffic.

Applications

• Backbone switch in Mark VIe turbine control networks

• Connecting multiple control nodes (CPUs, I/O racks, HMIs) in a ring or star topology

• Integration with plant‑wide Ethernet networks via uplink ports

• Replacing external industrial switches for space‑saving, ruggedized solution

• Use in power generation, oil & gas, and marine control systems

Configuration and Management

The ERSD board can be configured through a built‑in web server, SNMP, or GE’s ToolboxST software. Administrators can set up VLANs, configure port priorities, monitor traffic statistics, and enable port mirroring for diagnostics. Firmware updates are delivered as standard files and can be applied remotely. The board also provides logging of events such as link changes and power cycles.

Environmental and Physical Design

Built for industrial environments, the IS200ERSDG1A features a robust PCB with conformal coating (optional) and wide temperature tolerance. It mounts in a standard Mark VIe rack, sharing backplane power and mechanical support. The front panel includes eight RJ45 ports with integrated LEDs for link/activity and speed. All ports are shielded and meet EMI/EMC requirements for heavy industrial locations.

The GE IS200ERSDG1A Ethernet switch board is a key enabler of modern, resilient control networks, offering the performance and reliability demanded by critical power generation applications.