{"product_id":"abb-pm876-3bdh000607r1-ac-800m-series-central-processing-unit","title":"ABB PM876 3BDH000607R1 AC 800M Series Central Processing Unit","description":"\u003ch2\u003eABB PM876 3BDH000607R1 Central Processing Unit\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB PM876 3BDH000607R1\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003ePM876\u003c\/strong\u003e CPU Controller, operates as a dedicated hardware component for high-availability process automation and logic execution within Symphony Plus Melody Rack and System 800xA network platforms.\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\u003ePM876 (3BDH000607R1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eSWEDEN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.06 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e300 mm x 400 mm x 130 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eStandard industrial cabinet range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eSystem standard dependent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interfaces\u003c\/td\u003e\n\u003ctd\u003e1x Onet, 1x Cnet (redundant), 1x Fnet (redundant), 2x PROFIBUS DPV2, 1x Ethernet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocols Supported\u003c\/td\u003e\n\u003ctd\u003ePROFIBUS DP, Modbus TCP, IEC 61850\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control \u0026amp; Firmware Architecture\u003c\/h3\u003e\n\u003cp\u003eThe PM876 utilizes advanced backplane bus communication velocity to maintain deterministic data exchange across distributed control nodes. Firmware management is facilitated through an integrated USB interface, allowing for version control and compatibility updates without requiring complete system off-lining. The architecture supports I\/O density scaling through modular expansion and maintains synchronization in high-availability configurations via redundant Cnet and Fnet links. Firmware flash compatibility is verified against the specific system software revision to ensure stable boot-up cycles and register mapping.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the PM876 support hot-swapping during active process operations?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module is engineered for hot-swappable replacement. When configured in a redundant pair using the NT031 link cable, the secondary controller assumes master control, allowing the primary unit to be extracted without interrupting the control loop.\u003c\/p\u003e\n\u003cp\u003eQ: How is data integrity maintained during a power loss event?\u003c\/p\u003e\n\u003cp\u003eA: The controller utilizes an integrated 30 g Lithium Metal battery to provide localized power for non-volatile data retention, ensuring the integrity of process variables and configuration parameters during transient power failures.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting and Orientation:\u003c\/strong\u003e Ensure the module is installed in a vertical orientation within the Symphony Plus Melody Rack to facilitate natural convection cooling. Maintain at least 50 mm of clearance above and below the unit for airflow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding and Shielding:\u003c\/strong\u003e Utilize high-integrity shielding for all PROFIBUS and Ethernet communication cables. Connect cable shields to the designated chassis ground point to mitigate common-mode noise and electromagnetic interference (EMI).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Handling:\u003c\/strong\u003e Before initial operation, verify that the battery activation tab is removed if applicable. Replace the lithium battery every 2-3 years, or immediately upon the generation of a low-battery diagnostic alarm, to prevent potential data loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Management:\u003c\/strong\u003e Route redundant communication paths (Cnet\/Fnet) through separate physical cable trays to prevent single points of failure caused by mechanical cable damage.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":44342470246499,"sku":"PM876 3BDH000607R1","price":610.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/187._d8d85ba3-1d30-466a-9256-5088e2294730.jpg?v=1783564776","url":"https:\/\/www.autocontrolglobal.com\/products\/abb-pm876-3bdh000607r1-ac-800m-series-central-processing-unit","provider":"AutoControl Global","version":"1.0","type":"link"}