Product Details
Kit Contents (PM866AK01): PM866A CPU board, TP830 Baseplate, TB850 CEX-Bus Terminator, TB807 ModuleBus Terminator, TB852 RCU-Link Terminator, and Memory Backup Battery (4943013-6) .
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FAQs
Q1: What is the primary function of the PM866AK01?
It is the central processing unit for the AC 800M controller, responsible for executing control logic, managing data processing, coordinating communication with I/O modules, and providing system diagnostics. It is the core computational component of ABB Ability™ System 800xA for medium-to-large process control applications .
Q2: Does the PM866AK01 support redundancy?
Yes. The processor supports full CPU redundancy, covering CPU, CEX-Bus, communication interfaces, and S800 I/O. In a redundant pair configuration, the switchover time is ≤10 ms (some sources indicate <1 ms for hot-standby), ensuring uninterrupted operation in critical processes .
Q3: What is the difference between PM866AK01 and PM866K01?
The PM866AK01 (3BSE076939R1) is the A-version successor to the PM866K01 (3BSE050198R1). While both share the same 133 MHz processor and 64 MB RAM, the AK01 offers improved firmware compatibility with newer 800xA system versions and is RoHS compliant. ABB recommends the AK01 for new projects or those with higher lifecycle requirements .
Q4: What communication interfaces are available?
The TP830 baseplate provides 2 x RJ45 Ethernet ports (CN1, CN2) for redundant Control Network connection (10/100 Mbps) and 2 x RJ45 serial ports: COM3 (RS-232C with modem control) and COM4 (isolated, dedicated for configuration tools). Additional fieldbus protocols are supported via optional CI modules (PROFIBUS, PROFINET, EtherNet/IP, etc.) .
Q5: What software is required to program this controller?
The PM866AK01 is configured using ABB Control Builder M (v6.x or higher) within the 800xA engineering environment. System compatibility requires System 800xA version 6.0.2 and onwards.
