{"product_id":"3bse018157r1-abb-pm861ak01-ac-800m-cpu-processor-unit","title":"3BSE018157R1 ABB PM861AK01 AC 800M CPU Processor Unit","description":"\u003ch2\u003eABB PM861AK01 3BSE018157R1 Processor Unit\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB PM861AK01 3BSE018157R1\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003ePM861A\u003c\/strong\u003e Processor Unit, operates as a dedicated hardware component for central processing unit execution and modular control tasks within ABB AC 800M 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\u003ePM861AK01 3BSE018157R1\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\u003e1.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e119 mm W x 135 mm D x 186 mm H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e+5 to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e250 mA typ \/ 430 mA max at 24 VDC (6 W typ \/ 10.3 W max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMicroprocessor\u003c\/td\u003e\n\u003ctd\u003eMPC860 (48 MHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-Board Memory\u003c\/td\u003e\n\u003ctd\u003e16 MB total RAM (7.155 MB application memory), 2 MB Flash PROM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply Input\u003c\/td\u003e\n\u003ctd\u003e24 VDC (19.2 to 30 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003e2 x RJ-45 Ethernet, 2 x RJ-45 Serial (COM3 RS-232C, COM4 isolated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitch-Over Time\u003c\/td\u003e\n\u003ctd\u003eMax 10 ms in redundant configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Isolation Voltage\u003c\/td\u003e\n\u003ctd\u003e500 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Class\u003c\/td\u003e\n\u003ctd\u003eIP20 (IEC 60529)\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 \u0026amp; I\/O Density\u003c\/h3\u003e\n\u003cp\u003eThe processor module manages system data traffic across the CEX-Bus backplane extension and ModuleBus interfaces, maintaining backplane bus communication velocity across expanded controller configurations. In single CPU deployments, the unit supports up to 96 I\/O modules, while scaled redundant architectures accommodate up to 84 I\/O modules. Dual CPU setups execute bumpless state synchronization across the RCU-Link interface, guaranteeing failover execution within 10 ms. Direct memory mapping accommodates up to 32 applications, 64 programs, and 32 concurrent control tasks with execution cycle rates down to 1 ms.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What items are included in the complete PM861AK01 processor unit kit?\u003c\/p\u003e\n\u003cp\u003eA: The PM861AK01 kit contains the PM861A CPU module, a TP830 baseplate, a TB850 CEX-bus terminator, a TB807 ModuleBus terminator, a TB852 RCU-Link terminator, and a 3.6 V lithium backup battery.\u003c\/p\u003e\n\u003cp\u003eQ: How does memory retention work during a main power interruption?\u003c\/p\u003e\n\u003cp\u003eA: An internal 3.6 V lithium backup battery preserves application program code and user dynamic data stored inside the 16 MB RAM array when the external 24 VDC supply voltage drops below operational thresholds.\u003c\/p\u003e\n\u003cp\u003eQ: What are the functional differences between serial ports COM3 and COM4?\u003c\/p\u003e\n\u003cp\u003eA: Serial port COM3 provides standard RS-232C communications with full modem control signals, whereas serial port COM4 provides galvanic isolation specifically dedicated to connecting local configuration and software commissioning tools.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the TP830 baseplate firmly onto a standard DIN rail before locking the PM861A CPU unit into place using the integrated slide-lock mechanism. Ensure the grounding metal clip makes direct, low-resistance contact with the rail to establish protective chassis earthing.\u003c\/p\u003e\n\u003cp\u003eInstall the required bus terminators (TB850 for CEX-bus, TB807 for ModuleBus, and TB852 for RCU-Link) on unused extension ports to prevent bus signal reflection. Connect the primary 24 VDC supply conductors to the baseplate terminal block, keeping supply wiring within the specified 19.2 to 30 VDC operating window. Route Ethernet cables (CN1, CN2) separately from high-voltage AC lines to prevent common-mode noise from corrupting high-speed network traffic.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":52964273684792,"sku":"PM861AK01 3BSE018157R1","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/598..jpg?v=1789523163","url":"https:\/\/www.automodulexpert.com\/products\/3bse018157r1-abb-pm861ak01-ac-800m-cpu-processor-unit","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}