{"product_id":"yokogawa-cp99a-a-centum-field-control-cpu-modules","title":"Yokogawa CP99A*A CENTUM Field Control CPU Modules","description":"\u003ch2\u003eYokogawa CP99A*A CENTUM Field Control CPU Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa CP99A*A\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eCP99A\u003c\/strong\u003e Field Control CPU Module, operates as a dedicated hardware component for deterministic process control algorithm execution and bus communication across Yokogawa CENTUM systems.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eCP99A*A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.35 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e130 mm x 100 mm x 30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 VDC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Architecture\u003c\/td\u003e\n\u003ctd\u003eProprietary RISC CPU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Cycle Time\u003c\/td\u003e\n\u003ctd\u003eConfigurable (10 ms to 100 ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnboard Memory\u003c\/td\u003e\n\u003ctd\u003e16 MB RAM, 64 MB flash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 50000 tags per controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interfaces\u003c\/td\u003e\n\u003ctd\u003eVnet\/IP, ESB bus, RIO bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Redundancy\u003c\/td\u003e\n\u003ctd\u003e1:1 dual-redundant CPU architecture supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware Diagnostics\u003c\/td\u003e\n\u003ctd\u003eBuilt-in self-test, watchdog timer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol and Channel-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe processor module processes continuous and batch control logic, coordinating real-time data flow from remote I\/O nodes via ESB bus and RIO bus interfaces. To preserve signal integrity when handling field variables, the architecture routes incoming analog data through I\/O cards featuring channel-to-channel isolation. This configuration blocks common-mode noise and ground potential differences across loop field circuits, allowing stable pass-through transmission of 4-20 mA HART loop protocol diagnostic signals to central operator stations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the CPU module execute hot-standby switchover in 1:1 dual-redundant configurations?\u003c\/p\u003e\n\u003cp\u003eA: When two CP99A*A modules are installed in a dual-redundant rack, tracking memory continually synchronizes process data between the active and standby units. If the active processor detects a hardware fault via its watchdog timer or built-in self-test, control transfers to the standby module within one scan cycle without bumping control outputs.\u003c\/p\u003e\n\u003cp\u003eQ: What interface protocols are utilized to exchange data with field I\/O racks?\u003c\/p\u003e\n\u003cp\u003eA: The module utilizes dedicated ESB bus or RIO bus communication links for local and optical remote I\/O expansion chassis, while interfacing with upper-level control network nodes via the Vnet\/IP real-time network protocol.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eTurn off main cabinet power before inserting the CPU module into the designated Field Control Station (FCS) processor slot. Slide the card along the card cage guides until the backplane connectors fully engage, then tighten the top and bottom retaining screws to ensure solid frame grounding. Verify that all ESB bus cable connectors are seated and latched firmly to prevent communication packet loss. Connect the cabinet protective earth (PE) busbar to a single-point earth ground using a short copper strap before re-energizing the system.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43791681912922,"sku":"CP99A*A","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/744.jpg?v=1785984867","url":"https:\/\/www.spareoil.com\/products\/yokogawa-cp99a-a-centum-field-control-cpu-modules","provider":"SpareOil Automation","version":"1.0","type":"link"}