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The GE IS220YDIAS1B is a Discrete Contact Input I/O Pack used within GE’s Mark VIe series of distributed control systems. This module serves as a critical interface, allowing the main controller to receive and process digital signals from various field devices.
Functionality and Applications
The IS220YDIAS1B is specifically designed to handle discrete inputs, which are on/off or open/closed signals. It accepts “dry-contact” digital inputs, meaning it doesn’t receive voltage from the external device. Instead, the module provides a wetting voltage to the contact and then senses whether the contact is open or closed.
This module is a key component in industrial automation and turbine control systems where it connects to devices like:
- Switches and pushbuttons for manual control.
- Limit switches to detect the position of mechanical parts like valves or levers.
- Safety interlocks and alarm contacts.
It’s suitable for both simplex (non-redundant) and redundant configurations, providing a crucial link for monitoring equipment status in real-time.
Key Specifications
| Specification | Details |
| Product Type | Discrete Contact Input I/O Pack |
| Series | GE Mark VIe |
| Function | Provides an electrical interface for discrete contact inputs (on/off signals) |
| Configuration | Simplex (single I/O pack) |
| Input Type | Dry-contact digital inputs |
| Typical Use | Industrial automation, turbine control systems, safety systems |
