Description
🔹 Product Description
The GE IS220YTURS1A is a YTUR Turbine I/O Pack designed for GE Mark VIeS turbine control and primary trip applications. It works with the IS200TRPAS1A Primary Trip Terminal Board and forms part of the Mark VIeS turbine-specific primary trip architecture. GE certification documentation specifically identifies IS220YTURS1A as a Mark VIe Control YTUR Turbine Specific Primary Trip module. The YTUR assembly includes an I/O Pack CPU, turbine I/O application circuitry, and a turbine I/O daughterboard, providing the processing and interface functions required by the associated terminal board.
🔹 Product Specifications
| Specification | Details |
|---|---|
| Brand | General Electric (GE) |
| Model | IS220YTURS1A |
| Series | Mark VIe / Mark VIeS |
| Product Name | Turbine I/O Pack |
| Functional Acronym | YTUR |
| Functional Description | Turbine Specific Primary Trip |
| Product Type | Mark VIeS Safety I/O Pack |
| Associated Terminal Board | IS200TRPAS1A |
| I/O Pack CPU | IS200BPPBS2B |
| Turbine I/O Application Board | IS200BTURS1A |
| Turbine I/O Daughterboard | IS200KTURS1A |
| Primary Application | Turbine Primary Trip / Protection |
| PCB Coating | S-style conformal coating |
| Operating Temperature | -30°C to +65°C* |
| Nominal Supply | 28.0 VDC* |
| Supply Range | 27.4–28.6 VDC* |
| Condition | New Surplus / Original* |
| Product Status | Legacy Mark VIeS component |
*Verify the actual unit, system documentation, and applicable GE installation requirements before installation. GE documentation identifies IS220YTURS1A with the IS200TRPAS1A terminal board.
🔹 Key Features
- Designed for GE Mark VIeS turbine control systems
- YTUR Turbine Specific Primary Trip function
- Interfaces with the IS200TRPAS1A Primary Trip Terminal Board
- Integrated I/O Pack CPU and turbine-specific application electronics
- Supports turbine protection and primary trip functions
- S-style PCB coating
- Suitable for legacy Mark VIeS maintenance and replacement
- Specific terminal-board and system configuration must be verified before replacement
🔹 FAQ
Q: What is the IS220YTURS1A used for?
A: It is a YTUR Turbine I/O Pack used for turbine-specific primary trip functions in GE Mark VIeS control systems.
Q: Which terminal board is compatible with IS220YTURS1A?
A: GE documentation identifies IS200TRPAS1A as the accessory terminal board for IS220YTURS1A.
Q: What boards are inside the YTUR I/O Pack architecture?
A: Technical documentation identifies the IS200BPPBS2B I/O Pack CPU, IS200BTURS1A Turbine I/O Application Board, and IS200KTURS1A Turbine I/O Daughterboard as components of the YTUR architecture.
Q: Is IS220YTURS1A a standard Mark VIe I/O module?
A: It is a specialized YTUR module for turbine-specific primary trip applications rather than a general-purpose analog or discrete I/O pack. GE identifies it specifically as a Turbine Specific Primary Trip module.
Q: Can IS220YTURS1A replace another Mark VIe I/O Pack?
A: Not automatically. YTUR is application-specific, and its terminal-board interface and protection function must match the installed system. Verify the complete part number and system configuration before replacement.
Q: What power supply does the YTUR pack use?
A: Available technical specifications identify a nominal 28.0 VDC supply, with a stated range of approximately 27.4–28.6 VDC. Confirm the actual installation requirements before energizing the module.
Q: Is the IS220YTURS1A still a current product?
A: It is associated with the Mark VIe/Mark VIeS platform. Availability and compatibility depend on the specific system generation, hardware revision, and installed control software.
🔹 Recommended GE Models
- IS220YPROS1A | YPRO Protection I/O Pack
- IS220YDIAS1A | YDIA Discrete Input I/O Pack
- IS220YDOAS1A | YDOA Discrete Output I/O Pack
- IS220YTCCS1A | YTCC Thermocouple I/O Pack
- IS220YAICS1A | YAIC Analog I/O Pack
- IS220YHRAS1A | YHRA HART Enabled I/O Pack
- IS220YVIBS1A | YVIB Vibration I/O Pack
- IS220PTURH1A | PTUR Turbine Primary Trip Module
- IS220PPROH1A | PPRO Backup Turbine Protection Module
- IS220PSVOH1A | PSVO Servo Control Module
- IS200TRPAS1A | Primary Trip Terminal Board
- IS200TRPAS2A | Primary Trip Terminal Board, 125 VDC
- IS200TRPGS1B | Primary Gas Trip Terminal Board
- IS200TRPGS2B | Primary Gas Trip Terminal Board, Simplex
- IS200TPROS1C | Turbine Protection Terminal Board




