{"product_id":"alstom-31166-029-11-g-cpu-pd-board","title":"Alstom 31166-029-11-G CPU PD Board","description":"\u003cdiv\u003e\u003cp\u003eAlstom 31166-029-11-G CPU\/PD Board is a Vital Processor Interlocking (VPI) central processing unit\/polynomial divider module used in Alstom’s VPI II signaling systems. The 31166-029-11 variant ships with VPI system software and is designed to plug into a VPI CPU\/PD chassis to perform core processing and interlocking logic within a vital signaling subsystem. Key specs include a 500 mA board logic current supply (600 mA when the optional HHT is connected), support for 27C128 EPROM (200 ns) and 27C010 EPROM (70 ns), and configuration via a DIP-switch\/jumper block (W1–W9) along with RESET, SYS-LO, SYS-HI and ADS-LO\/ADS-HI controls. In typical deployments, it interfaces with other Vital boards such as VRD and VSC to implement route logic, fault diagnostics, and interlocking decisions in a rail signaling environment.\u003c\/p\u003e\u003c\/div\u003e","brand":"ALSTOM","offers":[{"title":"New","offer_id":51659852415278,"sku":null,"price":79.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_85cbfbb5-c189-49ff-80fd-5496858104f9.jpg?v=1769530211","url":"https:\/\/plgautomation.com\/products\/alstom-31166-029-11-g-cpu-pd-board","provider":"PLG Automation ","version":"1.0","type":"link"}