The GE IS220PTURH1B (functionally known as the PTUR pack) is a specialized Turbine Specific I/O Pack manufactured by General Electric for the Speedtronic Mark VIe turbine control system.
The PTUR pack mounts directly onto primary turbine terminal boards (such as the TTUR series) to digitize and process real-time turbine control signals. It handles speed pulse processing (passive/active magnetic pickups), primary overspeed detection, generator synchronization checks, flame detector inputs, and trip loop interfacing for gas and steam turbines.
Technical Specifications
| Parameter | Specification |
| Manufacturer | General Electric (GE Power / GE Vernova) |
| System Platform | Speedtronic Mark VIe Control System |
| Part Number | IS220PTURH1B |
| Functional Acronym | PTUR (Primary Turbine I/O Pack) |
| Input Signals | Magnetic Speed Pickups (Passive/Active), Flame Detectors, Sync Check Inputs |
| Network Interfaces | Dual RJ-45 Ethernet Ports (Redundant 10/100 Mbps IONet Links) |
| Operating Voltage | 24 V DC Nominal (Dual Redundant Power via Terminal Board) |
| Processor Hardware | Onboard 32-bit ARM/Texas Instruments RISC Processor |
| Speed Processing Range | 2 Hz to 20 kHz pulse frequency detection |
| Operating Temperature | -30°C to +65°C (-22°F to +149°F) |
| Terminal Board Compatibility | TTURH1C, TTURH1D, TTURH2C Primary Turbine Terminal Boards |
Core Features & Operating Capabilities
- High-Speed Pulse & Overspeed Processing: Continuously samples pulse trains from shaft magnetic pickups to compute accurate turbine RPM for primary overspeed trip routines.
- Dual Redundant IONet Links: Connects to redundant Mark VIe Ethernet networks (A, B, or C IONet buses) via dual RJ-45 ports, ensuring uninterrupted communication if a network channel fails.
- Direct Terminal Board Mounting: Plugs directly onto TTUR terminal boards via high-density multi-pin connectors, eliminating long wiring runs between terminal blocks and signal conditioning electronics.
- Comprehensive Sensor Diagnostics: Conducts continuous background checks for open/short sensor lines, invalid frequency pulses, voltage rail health, and internal temperature.
- ToolboxST Configuration: Integrated into GE ToolboxST software, allowing simple parameter configuration, speed threshold setting, and live signal monitoring.
Related GE Mark VIe Hardware Components
- IS200TTURH1C / IS200TTURH2C — Primary Turbine Terminal Boards for field instrumentation.
- IS220UCSAH1A / IS220UCSBH1A — Mark VIe Central Controller Modules.
- IS220PDIOH1B — Discrete Input/Output Pack for auxiliary contact loops.
- IS220PAICH1B — Analog Input/Output Pack for temperature, pressure, and flow transmitters.
