Description
The GE IS220PPROS1B is a high-performance Turbine Protection I/O Pack for the Mark VIe control system. It is a safety-critical component specifically designed to handle emergency turbine protection functions, including overspeed detection and emergency trip logic.
Product Parameters (Datasheet)
- Model Number: IS220PPROS1B
- System Series: Mark VIe
- Module Type: Emergency Protection I/O Pack
- Communication: Dual 100 Mbps Ethernet (IONet)
- Inputs: * 3 Magnetic Pickup (MPU) Speed Inputs
- Emergency Trip (ETerm) feedback
- Outputs: * Trip Relay Control (TR)
- Status indication outputs
- Microprocessor: High-speed RISC processor for deterministic logic execution
- Operating Temperature: -30°C to +65°C (-22°F to +149°F)
- Redundancy: Supports Simplex and TMR (Triple Modular Redundancy) configurations
Country of Origin
This safety-critical module is manufactured by General Electric (GE) in the United States. It is designed to meet stringent global standards for turbine safety and protection.
GE IS220PPROS1B
GE IS220PPROS1B
GE IS220PPROS1B
Application Fields
The IS220PPROS1B is primarily found in high-availability power generation environments:
- Emergency Overspeed Protection: Providing independent, hardware-based speed monitoring for gas and steam turbines.
- Turbine Trip Logic: Interfacing with the Emergency Trip Board (TREH or TREG) to shut down fuel or steam flow in milliseconds.
- Frame Turbines: Standard on GE Frame 6, 7, and 9 gas turbines.
- Safety Instrumented Systems (SIS): Used as a dedicated safety layer separate from the main control logic.
Product Usage Instructions
- Mounting: The PPRO pack plugs directly onto a compatible terminal board, such as the SPRO or TREH. Ensure the side screws are tightened to secure the pack to the terminal board.
- Network Setup: Connect the two IONet ports to the Mark VIe network switches. For a TMR system, the PPRO packs are typically designated as R, S, and T cores.
- Wiring: Ensure speed sensor (MPU) cables are shielded and separated from high-voltage AC cables to prevent electromagnetic interference (EMI) which can cause nuisance trips.
- Configuration: Use GE ControlST software to configure the “Trip” setpoints. The logic within the PPRO is independent of the main controller’s application code.
- Diagnostic Monitoring: Monitor the LEDs on the front of the pack. A solid green RUN LED indicates the pack is healthy and communicating. A yellow or red LED indicates a hardware fault or communication loss.
Product Technical Description
The IS220PPROS1B is designed for “Functional Safety.” Technically, it is a self-contained controller that executes a specific set of turbine protection algorithms. It operates by reading the pulse frequency from magnetic pickups (MPUs) and comparing it against hard-coded or configured overspeed limits. If a limit is exceeded, the PPRO de-energizes its trip relays directly. The “S1B” version indicates the hardware revision, which features enhanced vibration resistance and improved thermal management over earlier versions.
Q&A (Common Questions)
Q: Can the IS220PPROS1B be used in a Simplex system? A: Yes, it is designed for use in both Simplex and Triple Modular Redundant (TMR) systems, though TMR is recommended for critical protection.
Q: What is the difference between PPROS1A and PPROS1B? A: The “S1B” is the modern successor to the “S1A,” featuring updated electronic components and better reliability in high-heat environments. They are generally functionally compatible.
Q: Does it require an external power supply? A: No, it receives its 24V DC power through the terminal board connection on the Mark VIe rack.
Q: How fast is the trip response time? A: The PPRO is designed for sub-cycle response times, typically executing protection logic in less than 20 milliseconds to prevent mechanical overspeed damage.
Similar Model Recommendations
- GE IS220VPROH1A (Legacy Mark VIe Protection Pack)
- GE IS200SPROH1A (Associated Terminal Board)
- GE IS220PPDAH1B (Power Distribution I/O Pack)
- GE IS220PTURH1B (Turbine Specific I/O Pack)
- GE IS200TREGH1B (Turbine Emergency Terminal Board)
For more information on the GE IS220PPROS1B and other Mark VIe turbine safety components, please contact our technical sales team.
