GE IS200 Series Modules — IS200JPDMG1RDC

Technical Dossier

Product Details And Specifications

GE IS200 Series: Comprehensive Module Range and Technical Overview

The GE IS200 series represents the core I/O, control, and communication module family deployed across GE's Mark VI Turbine Control System, EX2100 Excitation Control System, and LCI (Load Commutated Inverter) platforms. These systems are installed in critical heavy-industry environments including gas turbine power plants, combined-cycle facilities, nuclear auxiliary systems, petrochemical refineries, and offshore oil & gas platforms. The IS200 module family is the backbone of GE's distributed control architecture for rotating machinery, with a global installed base spanning several thousand turbine units across North America, Europe, the Middle East, and Asia-Pacific. Due to the long operational lifecycles of turbine assets (20–40 years), IS200 series modules remain in active demand for maintenance, repair, and overhaul (MRO) operations well beyond their original production dates.

The Evolution of IS200 Architecture

The IS200 module family was introduced alongside the Mark VI control platform in the mid-1990s as GE's successor to the Mark V (IS200 predecessor boards used the VMIVME VMEbus architecture). The Mark VI system adopted a triple-redundant (TMR) or simplex architecture using a proprietary IONet communication bus, with IS200 modules serving as the physical interface layer between field instruments and the UCSC/UCCE controller cards.

Early IS200 modules (circa 1996–2002) used through-hole and mixed SMT construction on FR4 substrates, with firmware stored on socketed EPROMs. Mid-generation boards (2003–2010) transitioned to fully surface-mount designs with flash-based firmware and improved EMI shielding. Late-generation IS200 modules (2011–2018) introduced enhanced diagnostics, higher-density I/O, and compatibility with the Mark VIe platform, which uses Ethernet-based IONet rather than the original serial IONet.

Compatibility note: IS200 modules designed for Mark VI simplex or TMR configurations are not directly interchangeable with Mark VIe equivalents without firmware and backplane verification. Operators must confirm the R-suffix (revision) and firmware version before substitution. Many IS200 boards entered end-of-active-production status between 2015 and 2022, making secondary-market sourcing the primary procurement channel for ongoing fleet maintenance.

IS200 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly deployed modules within the GE IS200 series. Each entry reflects a distinct functional role within the Mark VI / EX2100 / LCI control architecture.

Controllers & Processors

• IS200JPDMG1RDC: JPDM printed circuit board; junction panel driver module for Mark VI turbine control I/O interface.
• IS200UCVEH2A: Universal controller VME card; primary CPU module for Mark VI simplex and TMR control racks.
• IS200ECTBG1A: Excitation controller terminal board; interfaces excitation signals in EX2100 systems.
• IS200EACFG1A: Excitation AC feedback board; processes generator stator voltage and current feedback signals.

Analog Input / Output Modules

• IS200AEPAH1A: Analog I/O terminal board; supports thermocouple, RTD, and 4–20 mA process inputs for turbine monitoring.
• IS200AAIAH1A: Analog input terminal board; 16-channel differential analog input for process variable acquisition.
• IS200ATAIH1A: Analog terminal board; dedicated thermocouple input processing with cold-junction compensation.
• IS200AOUAH1A: Analog output terminal board; 8-channel 4–20 mA output for valve positioner and actuator control.

Digital Input / Output Modules

• IS200DTURH1A: Digital turbine I/O terminal board; handles discrete contact inputs from turbine protection circuits.
• IS200DSVOH1A: Digital servo output board; drives electrohydraulic servo valves for fuel and steam control.
• IS200DSPXH1A: Digital speed input board; processes magnetic pickup and proximity probe speed signals.
• IS200DFLAH1A: Digital flame detector input board; interfaces UV/IR flame scanner signals for combustion monitoring.
• IS200DTCCH1A: Digital contact closure board; 24-channel dry contact input for auxiliary equipment status monitoring.

Communication & Network Modules

• IS200STCIH1A: Serial communication interface board; provides RS-232/RS-485 links to HMI and third-party SCADA systems.
• IS200IOCIH1A: IONet communication interface board; manages the proprietary IONet serial bus between controller and I/O packs.
• IS200VTURH1B: VME turbine I/O board; high-density I/O interface for Mark VI VMEbus backplane integration.

Power Supply Modules

• IS200EPSMG1A: Power supply module; provides regulated 5 VDC and ±15 VDC rails to IS200 I/O rack backplane.
• IS200PSMG1A: Rack power supply board; redundant power distribution for Mark VI TMR control enclosures.

Sourcing Hard-to-Find & Obsolete IS200 Parts

A significant portion of the IS200 module catalog entered end-of-active-production (EOAP) status between 2015 and 2022 as GE transitioned its installed base toward the Mark VIe and Mark VIeS platforms. However, the operational lifespan of Mark VI-equipped turbines routinely extends 25–35 years, creating a structural gap between OEM supply availability and field maintenance demand.

DriveKNMS maintains a dedicated inventory program for IS200 series lifecycle extension, covering the following sourcing categories: new-surplus stock from original production runs, factory-refurbished units with full functional restoration, tested-used boards with documented operational history, and cross-reference substitution analysis for revision-compatible alternatives. All sourced IS200 modules are catalogued by part number, R-suffix revision, and firmware version to ensure compatibility verification prior to shipment. Emergency same-day quotation is available for critical plant outage scenarios.

Quality Control for the IS200 Range

IS200 series modules present specific test challenges due to their multi-layer backplane bus interfaces, socketed EPROM firmware, and mixed analog/digital signal paths. DriveKNMS applies the following test protocol to all IS200 boards processed through its facility:

• Visual inspection: solder joint integrity, component seating, corrosion assessment on edge connectors and VMEbus contacts.
• In-circuit test (ICT): verification of passive component values, power rail continuity, and bus termination resistance.
• Functional burn-in: boards are powered in a representative Mark VI rack environment for a minimum of 48 hours under simulated I/O load conditions.
• IONet communication validation: serial bus timing and packet integrity verified against GE Mark VI protocol specifications.
• Analog channel calibration: for analog I/O boards, all channels are calibrated against NIST-traceable reference standards to confirm accuracy within OEM specification.
• Firmware verification: EPROM or flash firmware version is confirmed and documented; boards with corrupted or mismatched firmware are reflashed prior to release.