{"product_id":"pm902f-abb-freelance-ac-900f-cpu-processor-module","title":"PM902F ABB Freelance AC 900F CPU Processor Module","description":"\u003ch2\u003eABB PM902F Freelance AC 900F CPU Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for high-speed logic processing and deterministic network communication in Freelance AC 900F control networks, the \u003cstrong\u003eABB PM902F 3BDH001000R0001\u003c\/strong\u003e (\u003cstrong\u003ePM902F\u003c\/strong\u003e Processor Module) provides direct physical\/electrical execution.\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\u003ePM902F\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\u003eGermany \/ Sweden\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eStandard DCS module weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard AC 900F rack dimensions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eStandard industrial ambient range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eExternal 24 VDC required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eController Family\u003c\/td\u003e\n\u003ctd\u003eFreelance AC 900F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPU Clock Speed\u003c\/td\u003e\n\u003ctd\u003e800 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnboard Memory\u003c\/td\u003e\n\u003ctd\u003e24 MB total (8 MB SRAM, 16 MB DRAM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003e4x Ethernet ports, 2x expansion slots\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocol Support\u003c\/td\u003e\n\u003ctd\u003eModbus TCP, IEC 60870-5-104\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePerformance Execution\u003c\/td\u003e\n\u003ctd\u003e0.12 ms per 1000 Boolean operations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConformal Coating\u003c\/td\u003e\n\u003ctd\u003eG3 harsh environment coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003ePanel or rack mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication Velocity and Network Determinism\u003c\/h3\u003e\n\u003cp\u003eThe processor executes complex control loops while driving backplane bus communication velocity across localized I\/O modules and external expansion racks. Integrated Ethernet ports utilize deterministic network protocols to ensure low-latency packet transmission between redundant CPU nodes and operator stations. Onboard 8 MB battery-buffered SRAM maintains retentive registers during main power drops, while internal flash memory structures preserve firmware flash compatibility across Freelance software versions starting from version 2013 onward.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the PM902F support hot-swapping during active redundant operations?\u003c\/p\u003e\n\u003cp\u003eA: Yes. When deployed in a dual redundant AC 900F rack setup, field engineers can replace a faulty CPU module without interrupting the online controller or disrupting active I\/O communication.\u003c\/p\u003e\n\u003cp\u003eQ: How is application data retained during a complete 24 VDC power loss?\u003c\/p\u003e\n\u003cp\u003eA: The module relies on the optional TA 951F battery unit to power the 8 MB SRAM bank, retaining application state parameters and retentive memory blocks throughout power outages.\u003c\/p\u003e\n\u003cp\u003eQ: Can expansion communication interfaces be added while the module is powered?\u003c\/p\u003e\n\u003cp\u003eA: No. Power must be isolated from the base rack before inserting or removing interface modules into the two dedicated communication slots to prevent backplane pin damage.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the CPU assembly onto a grounded panel or standard AC 900F rack inside a sealed enclosure. Connect the primary external 24 VDC supply to the designated power terminals using stranded copper conductors, observing correct polarity. Route all four Ethernet network cables through dedicated wiring channels separate from high-voltage AC lines to mitigate electromagnetic noise. Attach cable shielding firmly to the cabinet ground bar using low-impedance grounding clamps to ensure proper noise suppression.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":43772305604707,"sku":"PM902F","price":676.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/194_09fa14e1-03f8-4f56-9590-c5b0d5dc4efd.jpg?v=1760164225","url":"https:\/\/www.autocontrolglobal.com\/products\/pm902f-abb-freelance-ac-900f-cpu-processor-module","provider":"AutoControl Global","version":"1.0","type":"link"}