GE IS200 / IS230 Series Modules: IS230SNAIH4A IS200STAIH2ACB

Technical Dossier

Product Details And Specifications

GE IS200 / IS230 Series: Comprehensive Module Range and Technical Overview

The GE IS200 and IS230 module families form the hardware backbone of GE's Mark VI and Mark VIe Turbine Control Systems — the dominant distributed control platform deployed across gas turbines, steam turbines, and combined-cycle power plants in heavy industries including petrochemical refining, nuclear power generation, LNG processing, and offshore oil & gas. Installed base spans hundreds of facilities across North America, the Middle East, Southeast Asia, and Europe. These boards operate within a triple-redundant (TMR) or simplex architecture, communicating over the IONet and ARCNET backplane buses. Their long service life — often exceeding 20 years in continuous operation — makes reliable spare parts sourcing a critical operational requirement for plant maintenance teams.

The Evolution of IS200 / IS230 Architecture

The IS200/IS230 series was introduced alongside the Mark VI platform in the mid-1990s as GE Power's successor to the Mark V control system. The original IS200 boards used a VME-style backplane with ARCNET-based inter-module communication. As the platform matured into the Mark VIe generation (circa 2005–2010), GE transitioned to Ethernet-based IONet communication while maintaining backward-compatible I/O module form factors for select board types, enabling phased upgrades without full panel replacement.

Key architectural milestones: the early IS200 generation (1995–2002) established the core I/O and processor module taxonomy; the IS230 sub-series introduced enhanced signal conditioning and higher-density analog I/O; the Mark VIe transition (2005+) added Ethernet connectivity at the controller level while IS200-form I/O boards remained in production. As of 2020, GE has formally classified the majority of IS200/IS230 boards as mature or end-of-life, shifting new installations to the Mark VIe with IS420-series hardware. This makes the IS200/IS230 installed base entirely dependent on the secondary market and specialist distributors for ongoing maintenance and emergency replacement.

IS200 / IS230 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced modules within the IS200 and IS230 series. Classified by functional category:

Processor & Controller Modules

• IS200EPDMG1A: Mark VI EPDM processor module, primary control execution unit
• IS200EPSMG1A: Ethernet processor module, IONet communication controller
• IS200IOCSG1A: I/O controller sequencing module, coordinates distributed I/O scan
• IS230SNAIH4A: Simplex network analog input/output hybrid board, turbine signal interface

Analog I/O Modules

• IS200STAIH2ACB: Analog input terminal board, 16-channel thermocouple/RTD signal conditioning
• IS200AAIAH1A: Analog input module, 16-channel 4–20 mA process signal acquisition
• IS200AAOCH1A: Analog output module, 8-channel 4–20 mA current loop output
• IS200TRLYH1C: Relay output terminal board, 16-channel dry contact relay array
• IS200STCIH2A: Thermocouple input terminal board, cold junction compensation integrated

Digital I/O Modules

• IS200DAIAH1A: Digital input module, 24 VDC discrete input, 32-channel
• IS200DAOAH1A: Digital output module, 24 VDC sourcing output, 32-channel
• IS200EDCFG1A: DC feedback input module, speed and position pulse counting
• IS200VSVOH1B: Servo valve output module, electrohydraulic actuator drive interface

Communication & Network Modules

• IS200ECTBG1A: Ethernet communication terminal board, IONet physical layer interface
• IS200BICLH1A: ARCNET bus interface and clock module, legacy backplane communication
• IS230PCAAH1A: Process controller analog hybrid board, integrated PID and signal I/O

Power Supply Modules

• IS200PSCDG1A: DC power supply module, 28 VDC regulated output for I/O rail
• IS200PSMGH1A: Power supply management module, redundant power monitoring and switchover

Sourcing Hard-to-Find & Obsolete IS200 / IS230 Parts

DriveKNMS maintains a dedicated inventory program for IS200 and IS230 series boards, specifically targeting modules that GE has discontinued from active production. For plant operators running Mark VI systems beyond their original design life, the inability to source a single failed board — such as an IS230SNAIH4A or IS200STAIH2ACB — can result in unplanned turbine shutdown and significant revenue loss.

Quality Control for the IS200 / IS230 Range

IS200 and IS230 boards present specific testing challenges due to their multi-layer PCB construction, ARCNET/IONet dual-bus interfaces, and mixed analog-digital signal paths. DriveKNMS applies the following verification protocol to all IS200/IS230 units:

• Visual inspection: component-level examination for capacitor degradation, solder joint fatigue, and conformal coating integrity
• Backplane bus continuity: ARCNET and IONet interface pin verification against GE IS200 hardware reference specifications
• Analog channel calibration: each analog I/O channel tested against known reference signals; deviation tolerance held to ±0.1% of full scale
• Functional power-on test: boards energized at rated voltage with simulated I/O load; firmware version and board ID confirmed where applicable
• Burn-in cycle: 48-hour thermal cycling at operating temperature range to screen latent component failures
• Final documentation: test report issued with each unit, including board serial number, firmware revision, and test date