Description

Product Overview

The IS220YDIAS1A belongs exclusively to Mark VIeS safety system (SIL3) (Y-series = safety I/O; standard Mark VIe uses P-series). It samples dry contact status for turbine trips, limit switches, breaker feedback, flame status and E-stop signals. The suffix /RM means refurbished / tested exchange unit, not factory new. It supports TMR 2oo3 safety voting and high-resolution SOE timestamping, widely deployed on gas / steam turbine BMS and generator protection.

Technical Specifications

• Brand: GE Vernova
• Model: IS220YDIAS1A / RM
• Warranty: One Year
• Condition: Refurbished tested (RM)
• Channels: 24 dry contact discrete inputs
• SOE resolution: 1 ms per channel
• Communication: Triple redundant IONet Ethernet (R/S/T) for Mark VIeS TMR architecture
• Wetting supply: 28 VDC nominal, max 32 VDC
• Isolation: Galvanic isolation field-to-backplane
• Matching terminal boards: IS200STCIS1A, IS400STCIS1A, IS400TBCIS2C
• Hot swap: Yes, within safety rack
• Operating temp: −30 °C ~ +65 °C
• Certification: SIL 3, IEC 61508, CE, cULus, ATEX / IECEx Zone 2
• Diagnostics: Front status LEDs, contact wetting fault, network health, self-test
• Differentiation:
  • IS220YDIAS1A: SIL safety DI pack (Mark VIeS only)
  • IS220PDIAH1B: Non‑safety DI for ordinary Mark VIe
  • IS220YDOAS1A: Sister SIL discrete output pack
• Origin: USA