Description
GE IS220PPROS1B PPRO Emergency Turbine Protection I/O Pack
Product Overview
IS220PPROS1B is a safety‑critical PPRO (Packaged Protective Relay Overspeed) I/O pack for GE Speedtronic Mark VIe / Mark VIeS turbine control systems. It provides independent hardware‑based overspeed and emergency trip protection, separate from the main controller. It accepts pulse signals from magnetic pickup (MPU) speed sensors, executes overspeed, acceleration and deceleration protection logic, and drives hard‑wired trip relays for turbine emergency shutdown. It mounts on dedicated SPRO / TREA terminal boards and communicates with the UCSB main controller over redundant IONet Ethernet. This is US‑origin legacy hardware, OEM production discontinued, mainly used as spare‑parts for power‑plant turbine assets.
Typical Applications
- Gas‑turbine & steam‑turbine independent overspeed protection: Hardware‑level backup trip protection independent of main control CPU
- Combined‑cycle power plant: Safety protection for turbo‑generator sets, emergency shutdown interlock loops
- Mark VIeS SIS safety‑instrumented system: TMR‑configured safety layer for turbine SIL‑rated protection
- Oil‑gas turbo‑machinery: Compressor turbine overspeed trip for refinery and pipeline installations
- Retrofit & spare‑part replacement: Component renewal for existing Mark VIe turbine control cabinets
- Thermal‑power unit safety upgrade: Diversity protection to reduce common‑mode failure risk of turbine control system
Specifications & Technical Parameters
| Item | Specification |
|---|---|
| Model | IS220PPROS1B (PPRO I/O Pack) |
| System Compatibility | Mark VIe, Mark VIeS |
| Speed Input Channels | 3 × Magnetic Pick‑up (MPU) speed sensor inputs |
| Processor | High‑speed embedded RISC for deterministic protection logic |
| Power Supply | 24 VDC nominal, max power consumption 5.5 W |
| Communication Interface | 2 × 10/100 Mbps RJ45 IONet redundant Ethernet |
| Field Connector | 37‑pin D‑sub connector, mates with SPRO/TREA terminal board |
| Galvanic Isolation | 2500 V field‑to‑backplane isolation |
| Redundancy Mode | Supports simplex and TMR triple‑modular redundant deployment |
| Operating Temperature | ‑30 ℃ ~ +65 ℃ |
| Storage Temperature | ‑40 ℃ ~ +85 ℃ |
| Cooling | Natural convection, fan‑less design |
| Indicators | PWR, ATTN, LINK LED status & diagnostic indicators |
| Certifications | CE, UL, Class I Div. 2; SIL‑3 capable within Mark VIeS architecture |
| Origin | United States |
| Weight | Approx. 0.45 kg |
| Protection Class | IP20 (cabinet‑mount only) |
Key Features & Benefits
- Independent hardware‑driven protection: Overspeed trip logic runs on local hardware, does not rely on main UCSB controller software; maintains trip capability even if main controller fails.
- Triple‑channel MPU speed acquisition: Three‑channel speed input supports TMR voting architecture, lowers single‑point‑failure risk for overspeed protection loops.
- Redundant IONet dual‑Ethernet: Dual independent Ethernet ports enhance communication reliability for status reporting and fault diagnostics to main controller.
- High‑voltage galvanic isolation: 2500 V isolation between field sensors and control backplane, resists plant‑site surge and EMI interference.
- **Hard‑wired trip output capability: Directly drives emergency trip relays, fuel shut‑off circuits for fast turbine shutdown response.
- Seamless Mark VIe ecosystem integration: Matches dedicated SPRO / TREA terminal boards, plug‑pack form factor for simple cabinet installation and replacement.
- Wide industrial temperature range: Natural convection cooling, suitable for harsh power‑plant cabinet ambient conditions.
GE IS220PPROS1B
Related Series‑Family Models (Mark VIe I/O Pack family)
GE Mark VIe turbine control I/O packs
- IS220PPROS1B: PPRO overspeed emergency protection pack (target model)
- IS220PDIOH1A: Discrete I/O pack
- IS220PAICH1A: Analog input pack
- IS220PCTAH1A: RTD / thermocouple input pack
- IS220UCSBH4A: UCSB main controller
Start Chat
