GE IS200AEBEG1A

Technical Dossier

Product Details And Specifications

GE IS200 Series Technical Notes

The Evolution of IS200 Architecture

The IS200 series emerged in the mid-1990s as GE Power Systems standardized turbine control around the Mark VI platform, replacing the Mark V's proprietary backplane with a more modular, VME-compatible bus structure. Early IS200 modules used parallel backplane communication; later revisions introduced the IONet Ethernet-based I/O network, enabling distributed I/O racks separated from the main controller cabinet by up to 100 meters. The Mark VIe generation (introduced circa 2005–2008) retained IS200-form-factor modules but migrated to a fully Ethernet-based architecture (IONET/ARCNET), improving diagnostics and enabling remote monitoring. Compatibility between Mark VI and Mark VIe IS200 modules is revision-dependent: hardware form factor is often identical, but firmware and backplane addressing differ. Engineers sourcing replacement modules must verify the exact revision suffix (e.g., A, B, C, D, E, F, G) to ensure backplane and firmware compatibility. The series is now in a mature/end-of-production lifecycle; GE no longer manufactures most IS200 variants, making third-party MRO suppliers the primary source for spare parts and long-term maintenance support.

IS200 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly deployed modules within the GE IS200 series. Each entry includes its functional classification and a concise technical description.

Analog Input (AI) Modules

• IS200AEBEG1A: Analog I/O terminal board; interfaces thermocouple, RTD, and 4–20 mA signals to the Mark VI controller via backplane.
• IS200AEAAH1A: Analog input terminal board; supports differential voltage and current inputs for process variable monitoring.
• IS200AAIAH1A: Analog input module; 16-channel 4–20 mA input board for process instrumentation loops.
• IS200ATAAH1A: Analog terminal board; used for thermocouple and millivolt signal conditioning in turbine exhaust temperature monitoring.

Digital Input (DI) Modules

• IS200DAIAH1A: Digital input terminal board; 24 VDC discrete input acquisition for valve position, limit switch, and relay status signals.
• IS200DTURH1A: Digital input terminal board for turbine speed and overspeed detection; interfaces magnetic pickup sensors.
• IS200DSVOH1A: Digital input/output servo terminal board; interfaces electrohydraulic servo valves for fuel and inlet guide vane control.
• IS200DSPXH1A: Digital signal processor board; handles high-speed pulse counting and frequency measurement for speed probes.

Digital Output (DO) Modules

• IS200EDCFH1A: DC power distribution and fusing board; provides protected 28 VDC output circuits for field solenoids and actuators.
• IS200TRLYH1A: Relay output terminal board; 16-channel dry-contact relay outputs for alarm annunciation and trip logic.
• IS200VSVOH1B: Servo output driver board; generates ±200 mA current-controlled output to electrohydraulic servo valves.

CPU / Controller Modules

• IS200UCVEH1A: Mark VI main controller board (UCVE); executes turbine control application software, manages I/O communication via IONet.
• IS200UCVEH2A: Revised UCVE controller; enhanced memory and processing speed for complex multi-shaft applications.
• IS200EACFH1A: Application controller board; secondary processing module used in simplex and TMR Mark VI configurations.

Power Supply Modules

• IS200EPSMH1A: Power supply module; converts 120/240 VAC to regulated 28 VDC and 5 VDC for Mark VI I/O rack power distribution.
• IS200BPPCH1A: Backplane power and communication board; distributes logic power and backplane bus signals across the I/O module rack.

Communication / Network Modules

• IS200IOCIH1A: IONet communication interface board; bridges the Mark VI controller to the Ethernet-based IONet I/O network for distributed rack communication.
• IS200STCIH1A: Serial communication interface board; provides RS-232/RS-485 ports for Modbus RTU and legacy HMI connectivity.