GE IS420YDOAS1B Discrete Output I/O Pack in stock

GE IS420YDOAS1B is a safety discrete output I/O pack for GE Mark VIeS Speedtronic turbine control system, also known as YDOA pack. It serves as the core control unit to send output commands and receive feedback signals from matched relay terminal boards such as IS410SRLYS2A.

This I/O pack supports simplex or TMR triple modular redundant configuration, equipped with dual Ethernet ports and front diagnostic LEDs. It features fast response time and complete circuit monitoring, designed for safety interlock and trip control in high-reliability power plant systems.

Data Parameters

• 1. Brand: GE.

• 2. Model: IS420YDOAS1B.

• 3. Product Type: Discrete Output I/O Pack (YDOA).

• 4. Application: Mark VIeS Speedtronic Turbine Control System.

• 5. Feature: Support Simplex / TMR redundant mode, 12-channel relay control.

• 6. Characteristic: Dual Ethernet communication, relay coil monitoring function.

• 7. Communication: Dual Ethernet I/O network, DC37 pin terminal interface.

• 8. Package: Original I/O pack assembly.

• 9. Mounting: Rack mounting, matched with dedicated terminal board.

• 10. Operating Temperature: -40℃ ~ +85℃.

Core Functions

• 1. Receive logic commands from Mark VIeS controller and drive relay outputs.

• 2. Collect relay status feedback signals from supporting terminal boards.

• 3. Realize TMR voting control to improve safety of trip interlock signals.

• 4. Continuously monitor relay coil circuit faults and trigger alarm prompts.

• 5. Transmit real-time status and fault alarm data through dual Ethernet.

Application Scenarios

• 1. Gas turbine and steam turbine Mark VIeS safety control cabinet.

• 2. Power plant emergency trip, protection interlock and alarm output system.

• 3. Oil & gas industry high-reliability safety instrument control system.

• 4. GE Speedtronic control system spare replacement and cabinet upgrade.

• 5. Power industry turbine safety control spare parts inventory backup.

FAQ

• 1. Q: What is GE IS420YDOAS1B?
      A: It is a safety discrete output I/O pack for GE Mark VIeS turbine control system.

• 2. Q: Which terminal board can it match?
      A: It is compatible with IS410SRLYS2A simplex relay output terminal board.

• 3. Q: Does it support redundant configuration?
      A: Yes, it can run in simplex mode or TMR triple modular redundant mode.