GE IS200WDIIH3A DAUGHTER BOARD, WETTING, SDII

الوصف

The GE IS200WDIIH3A is a Wetting Daughter Board for the Mark VI series of GE’s Speedtronic Gas Turbine Control Systems. It’s an optional, plug-in component that works with a main SDII (Safety Digital Input/Output) board. Its primary function is to provide voltage to dry contact inputs, effectively “wetting” them to convert them into a digital signal that the SDII board can read.

Key Features and Functionality

The WDIIH3A is a specialized board that enhances the capability of the SDII card. Here’s a breakdown of its primary functions:

• Wetting of Dry Contacts: The main purpose of the board is to provide a voltage source to dry contact inputs. A “dry” contact is a switch or relay without an external voltage source. The IS200WDIIH3A supplies the necessary voltage (typically 24V or 125V DC) to “wet” these contacts, allowing the SDII board to sense their open or closed status.
• Plug-in Design: The WDII board plugs directly into the main SDII board, making it easy to install and replace. This modular design provides flexibility, allowing the system to be configured for different types of digital inputs.
• Signal Conversion: By providing voltage to the contacts, the board effectively converts a simple mechanical status (open/closed) into a readable digital signal (e.g., ON/OFF or 1/0) that the control system can use for logic and control.
• Protection: The board is typically designed with isolation and protection circuitry to prevent electrical noise or faults from damaging the main SDII board or the VME rack.

Technical Specifications