Description

The IS220YDOAS1A is the safety-rated discrete output I/O pack for Mark VIeS SIL3 turbine safety system (Y-series safety I/O). Suffix /RM = refurbished / exchange tested unit. It executes 2oo3 TMR voted trip outputs, driving trip solenoids, shutdown relays, fuel shutoff valves and critical BMS safety loads for gas/steam turbines and generator protection. It pairs with dedicated safety terminal boards, works together with the IS220YDIAS1A DI pack you checked earlier.

Technical Specifications

• Brand: GE Vernova
• Model: IS220YDOAS1A / RM
• Warranty: One Year
• Condition: Refurbished tested (RM)
• Channels: 14 buffered safety discrete outputs
• Network: Triple redundant IONet Ethernet (R/S/T) for TMR voting
• Field supply: 28 VDC nominal wetting / drive supply
• Matching terminal boards: IS200TRLYS1F, IS200TRLYS2F, IS400TRLYS1F, IS400TRLYS2F
• Hot swap: Supported within Mark VIeS safety rack
• Diagnostics: Per-channel open/short, load fault, network health, continuous self-test
• Operating temp: −30 °C ~ +65 °C
• Certification: SIL 3, IEC 61508, CE, cULus, ATEX / IECEx Zone 2
• Mounting: Standard Mark VIeS safety rack slot

Differentiation

• IS220YDOAS1A: SIL‑rated safety DO (Mark VIeS only, yellow front safety marking)
• IS220PDOAH1B‑E: Ordinary non‑safety DO for standard Mark VIe
• IS220YDIAS1A: Sister SIL discrete input pack
• IS220YAICS1A: SIL analog input safety pack
• Origin: USA