The GE IS220YDIAS1A Discrete Contact Input I/O Module supports Mark VIe and Mark VIeS safety systems and connects to terminal boards such as IS200STCIS1A, IS200STCIS2A, IS400STCIS1A, IS400STCIS2A, and IS400TBCIS2C. The module handles contact inputs and wetting outputs through a 28 VDC internal supply and supports up to 32 VDC. Its UL and CE certifications ensure safe operation in hazardous and non‑hazardous environments.
The IS220YDIAS1A module supports discrete input processing in Mark VIe and Mark VIeS turbine control systems. It suits gas turbines, steam turbines, and safety‑critical installations that require reliable contact monitoring, wetting output capability, and wide‑range temperature tolerance.
