Functional Description
IS220YDOAS1A is a discrete output pack developed by GE. It is a part of Mark VIeS control system. The I/O pack serves as a crucial electrical interface, facilitating seamless connectivity between one or two I/O Ethernet networks and a discrete output terminal board. Its design encompasses a common processor board along with an acquisition board explicitly tailored to the discrete output function, ensuring efficient and precise operation.

Functionality and Capabilities
Primarily, the pack exhibits remarkable capability, enabling control over a maximum of 12 relays.
Its operational scope extends to accepting terminal board-specific feedback, providing a comprehensive and versatile solution for diverse application needs. Notably, it accommodates various electromagnetic relay types, such as TRLYS1B, D, and F terminal boards, thereby enhancing adaptability.

Input and Output Interfaces
The I/O pack efficiently interfaces with external components through a dual RJ-45 Ethernet connector setup, bolstered by a three-pin power input mechanism.
Output functionality is facilitated via a DC-37 pin connector, establishing a direct and reliable connection with the associated terminal board connector. This streamlined interface architecture ensures seamless transmission and reception of signals.

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