Product Overview
GE IS220PPROS1B is a safety‑critical backup protection I/O pack for GE Mark VIe and Mark VIeS turbine control systems. It mounts onto matched terminal boards and interfaces with shaft‑mounted magnetic pickup speed sensors. It implements hardware‑based overspeed protection which can trigger emergency turbine trips independently of the main controller software, reducing risks from CPU or firmware faults. It exchanges status data with the main system over IONet Ethernet, while maintaining hardwired trip outputs for emergency shutdown devices. Conformal‑coated hardware options are available for high‑humidity, high‑vibration turbine‑cabinet environments. It is widely stocked as original spare‑part hardware for maintenance and retrofit of legacy power‑generation turbine control installations.
Series
IS220PPROS1B belongs to the PPRO protection I/O pack family within Mark VIe control hardware ecosystem. The PPRO series provides dedicated hardware‑level safety protection for rotating machinery, complementing standard control I/O packs. It must pair with dedicated terminal boards: IS200SPROH1A, IS200SPROH2A, IS200TPROH1C, IS200TPROH2C, IS200TPROS1C, IS200TPROS2C and other compatible variants for field‑wiring terminationGE Vernova.
Product Features
‑ Hardware‑implemented overspeed protection logic, independent of main controller software execution ‑ Processes frequency‑based speed signals from magnetic‑pickup (MPU) shaft‑speed sensors ‑ Hard‑wired emergency trip outputs for fuel valves, trip relays and turbine ESD circuits ‑ Dual‑rail 28 VDC power supply input for enhanced power‑supply fault tolerance ‑ IONet industrial Ethernet interface for status reporting, diagnostics and event data upload to Mark VIe controller ‑ Supports dual‑redundant and triple‑modular‑redundant system configurations for SIS safety‑instrumented‑system applications ‑ Comprehensive on‑board self‑diagnostics for sensor‑wiring faults and internal module health monitoring ‑ Front‑panel LED status indicators for local visual fault‑diagnosis ‑ Hot‑swap support, allowing online module replacement without shutting down the whole turbine‑control chassis ‑ Certified for Class I Div 2 and ATEX Zone 2 hazardous‑location environments ‑ Direct drop‑in replacement for original IS220PPROS1B hardware for field‑site retrofit work
Product Parameters
‑ Model Number: IS220PPROS1B ‑ Power Supply: Dual 28 VDC input, typical power consumption: 5.5 W ‑ Communication: IONet Ethernet for Mark VIe system backplane communication ‑ Compatible Terminal Boards: IS200SPROH1A, IS200SPROH2A, IS200TPROH1C, IS200TPROH2C, IS200TPROS1C, IS200TPROS2C, IS200TREAH1A, IS200TREAH3AGE Vernova ‑ Operating Temperature: ‑30 °C ~ +65 °C ‑ Storage Temperature: ‑40 °C ~ +85 °C ‑ Relative Humidity: 5‑95 %, non‑condensing ‑ Protection Rating: IP20 (cabinet‑installation only) ‑ Approvals: UL508, CSA‑C22.2, ATEX Ex nA IIC T4 Gc, Class I Div 2 Groups A‑D T4 certification
Product Specifications
‑ Form Factor: Standard Mark VIe I/O pack form factor, plug‑on to dedicated terminal board ‑ Signal Input: Frequency input from magnetic‑pickup speed sensors ‑ Output: Hardware‑logic driven hard trip relay outputs for turbine emergency shutdown ‑ Diagnostic: On‑board channel diagnostics, LED status indication, fault event reporting via IONet ‑ Compatibility: GE Mark VIe, Mark VIeS gas‑turbine and steam‑turbine control systems ‑ Cooling: Natural convection inside turbine‑control cabinet ‑ Weight: Approx 0.4 kg ‑ Maintenance: Direct hot‑swap spare I/O pack for turbine‑control‑system repair
Function
IS220PPROS1B receives raw frequency‑based speed signals from shaft‑mounted magnetic‑pickup sensors. Its independent hardware circuit evaluates shaft‑speed values; when overspeed threshold is exceeded, it activates hard‑wired trip outputs to execute emergency turbine shutdown, without relying on main controller software operation. It transmits measured speed data, channel‑diagnostic information and fault‑event logs to the Mark VIe main controller via IONet Ethernet. Hot‑swap capability enables technicians to replace the protection pack online for maintenance without interrupting other system functions. It provides independent backup safety protection layer for prime‑mover equipment to improve overall system safety integrity level.
Purpose
Provide hardware‑independent backup overspeed and emergency‑trip protection for gas‑turbine and steam‑turbine units within Mark VIe control systems. Replace defective IS220PPROS1B packs to restore turbine safety‑protection functions. Used for spare‑part stocking and maintenance of legacy GE Mark VIe power‑generation turbine‑control installations.
Application Fields
Gas‑turbine and steam‑turbine power‑generation units, combined‑cycle power plants, refinery prime‑mover control systems, offshore‑platform turbine safety‑protection systems, industrial‑plant turbine gen‑set safety‑instrumented‑systems, legacy GE Mark VIe / Mark VIeS turbine‑control‑system maintenance and retrofit projects.
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