GE IS420YDIAS1B Discrete Contact Input I/O Pack in stock

GE IS420YDIAS1B is a safety discrete contact input I/O pack for GE Mark VIe / Mark VIeS Speedtronic turbine control system, abbreviated as YDIA pack. It collects dry contact status signals from field switches, emergency stop and interlock devices, and works with terminal boards like IS410STCIS2A and IS410STCIS4A.

This I/O pack supports TMR triple modular redundant configuration, equipped with dual Ethernet IONet ports and 1ms high-precision SOE sequence of event recording. It provides floating wetting voltage and ground fault detection function, meeting IEC61508 functional safety requirements for turbine protection loops.

Data Parameters

• 1. Brand: GE.

• 2. Model: IS420YDIAS1B.

• 3. Product Type: Discrete Contact Input I/O Pack (YDIA).

• 4. Application: Mark VIe / Mark VIeS Turbine Safety Control System.

• 5. Feature: 24 contact input channels, 1ms SOE event capture.

• 6. Characteristic: Floating wetting supply, ground fault detection, SIL capable.

• 7. Communication: Dual Ethernet IONet high-speed I/O network.

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

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

• 10. Operating Temperature: -40℃ ~ +55℃.

Core Functions

• 1. Detect open/close status of dry contacts from limit switches and E-stop devices.

• 2. Provide floating 24VDC / 48VDC wetting power for passive contact loops.

• 3. Capture sequence of events with 1ms timestamp for accident analysis.

• 4. Continuously monitor wiring faults including ground fault and open circuit.

• 5. Transmit contact status and fault alarms to Mark VIe controller via dual Ethernet.

Application Scenarios

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

• 2. Power plant emergency trip, protection status feedback system.

• 3. Oil & gas hazardous area safety instrumented system (SIS).

• 4. GE Speedtronic control system retrofit and spare replacement.

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

FAQ

• 1. Q: What is GE IS420YDIAS1B?
      A: It is a safety contact discrete input I/O pack for Mark VIe / Mark VIeS turbine control system.

• 2. Q: Which terminal boards can it match?
      A: Compatible with IS410STCIS2A (24VDC) and IS410STCIS4A (48VDC).

• 3. Q: What is SOE function?
      A: Sequence of event recording with 1ms high precision time stamp for fault tracing.