The 4256A99G01 is a Westinghouse WDPF 3DIOB1 printed circuit board used in Westinghouse Distributed Processing Family DCS installations at power generation facilities. The 3DIOB1 designation indicates a DIO (Digital I/O) backplane or interface board within the WDPF processing unit architecture, providing the physical mounting structure and signal bus routing for discrete I/O functions within the WDPF card chassis. Digital I/O interface hardware is essential for connecting field contact signals and discrete control outputs to the WDPF functional processor. Powergenics stocks and repairs Westinghouse WDPF digital I/O boards including the 4256A99G01, supporting facilities maintaining legacy WDPF distributed control system installations. Call 800-861-9773 for pricing and availability.
Westinghouse
4256A99G01
3DIOB1
Technical Specification
The Westinghouse WDPF control system consists of individual processing units which communicate over networks or “highways”. Two basic types of communications are available:
• WEStation which is based on a RISC workstation with added Westinghouse hardware supporting highway communication.
• Multibus-based communications based on Westinghouse boards including the functional processor and highway communication hardware.
Printed Circuit Board
Need This Board Repaired or Sourced?
Powergenics repairs and supplies industrial circuit boards with a 3-year warranty and 98% success rate. We are SDVOSB certified and hold a GSA contract. Rush turnaround available.