GE IS200 Series Modules – IS200VVIBH1CAC Vibration Monitoring Card

Technical Dossier

Product Details And Specifications

GE IS200 Series Technical Notes

The GE IS200 series is the core I/O and control module platform for GE's Mark VI Turbine Control System, deployed globally in heavy industrial environments including gas turbine power plants, combined-cycle facilities, petrochemical refineries, offshore platforms, and nuclear auxiliary systems. Introduced in the late 1990s as the successor to the Mark V architecture, the IS200 platform standardized the backplane communication bus across GE Energy's turbine control portfolio. Installed base estimates exceed tens of thousands of units across North America, Europe, the Middle East, and Asia-Pacific. The IS200VVIBH1CAC specifically functions as a vibration monitoring input card, accepting proximity probe and accelerometer signals for shaft and bearing vibration surveillance — a safety-critical function in rotating machinery protection.

The Evolution of IS200 Architecture

The IS200 series was engineered to replace the Mark V modular I/O racks, which relied on parallel backplane wiring and proprietary ARCNET communication. The Mark VI platform introduced IONet (Ethernet-based I/O network) with full redundancy support, enabling triple-redundant (TMR) configurations for critical turbine protection. Early IS200 revisions (suffix AA, AB) used 5V CMOS logic on the backplane; later revisions (BA, CA, CAC) transitioned to 3.3V logic with improved EMI shielding and updated FPGA firmware. The IS200VVIBH1CAC carries the CAC hardware revision — a mature production revision with enhanced signal conditioning and improved proximity probe input filtering. Compatibility between hardware revisions requires firmware alignment: mixing early AA boards with late CAC boards in the same rack without firmware synchronization is a documented failure mode. The IS200 platform is now in the mature/end-of-production phase. GE Vernova has transitioned new installations to the Mark VIe (IS420 series) platform. However, the installed base of Mark VI systems will require IS200 spare parts support through at least 2035 based on typical turbine overhaul cycles of 25,000–48,000 operating hours.

IS200 Full Catalog & Functionalities (SKU List)

The following IS200 series modules are classified by functional category. All model numbers are verified GE Mark VI platform components.

Vibration & Protection I/O

• IS200VVIBH1CAC: 16-channel vibration monitoring card; proximity probe and accelerometer input; TMR-compatible.
• IS200VVIBH1BAC: Earlier hardware revision of VVIB vibration card; functionally equivalent, firmware version differs.
• IS200VTURH1BAC: Turbine protection relay output card; interfaces with trip solenoids and protective relay circuits.
• IS200VSVOH1BAC: Servo output card; drives electro-hydraulic servo valves for fuel and inlet guide vane control.

Analog I/O

• IS200VAICH1BAC: 16-channel analog input card; 4–20 mA / 0–10 V; temperature and pressure transmitter inputs.
• IS200VAOCH1BAC: 8-channel analog output card; 4–20 mA; positioner and control signal outputs.
• IS200VTCCH1BAC: 16-channel thermocouple input card; Type J/K/T/E; cold junction compensated.
• IS200VRTDH1BAC: 8-channel RTD input card; 2/3/4-wire PT100/PT1000; bearing and winding temperature monitoring.

Digital I/O

• IS200VDICH1BAC: 24-channel digital input card; 24 VDC/125 VDC selectable; discrete status and limit switch inputs.
• IS200VDOCH1BAC: 16-channel digital output card; relay and transistor output options; solenoid and alarm outputs.
• IS200VDOEH1BAC: Enhanced digital output card with diagnostics feedback loop for output verification.

Communication & Network Adapters

• IS200VCMIH1BAC: Communication interface card; bridges Mark VI IONet to Modbus RTU/TCP and DNP3 protocols.
• IS200VPROH1BAC: Primary processor/controller card; runs GE CIMPLICITY-based turbine control logic in Mark VI chassis.
• IS200VCPCH1BAC: Compact processor card; used in simplex Mark VI configurations for smaller turbine applications.

Power Supply

• IS200VPWRH1BAC: 28 VDC rack-mount power supply module; provides regulated power to IS200 I/O backplane.
• IS200VPSOH1BAC: Power supply output card; distributes conditioned DC power to field device loops.