ABB PM861AK01 3BSE018157R1 AC 800M Processor Unit

Description

The PM861AK01 (Product ID: 3BSE018157R1) functions as the central processor unit kit within the modular AC 800M controller framework to run real-time control algorithms, diagnostics, and communication processing. This basic hardware assembly executes application programs to govern discrete, continuous, and batch sequence loops across demanding industrial processing operations. The PM861AK01 3BSE018157R1 hardware package includes the PM861A central processor core unit alongside a TP830 baseplate to allow local physical expansion, structural interconnects, and field terminal configurations. For internal memory retention and timekeeping functions during main power disruptions, the unit relies on an onboard replaceable lithium backup battery. It facilitates local data exchange through an electrical ModuleBus interface and supports multi-protocol serial field links via dedicated plug-in communication expansion buses.

Features

• Complete core control package containing the PM861A CPU module, a TP830 baseplate, and crucial system bus terminators.
• High-density execution layer for deterministic control logic and simultaneous multi-task process scheduling.
• Integrated electrical ModuleBus interface for direct high-speed local connection to S800 I/O subsystems.
• Redundant Control Unit (RCU) link configuration path available through dedicated hardware termination parameters.
• Continuous internal clock tracking and volatile register protection via a dedicated 4943013-6 lithium battery cell.

Applications

• Distributed Control Systems (DCS) for chemical batch handling, water utility control, and continuous material processing plants.
• Small to medium-scale machinery sequence coordination requiring compact local I/O distribution drops.
• Factory automation utility groups requiring multi-channel fieldbus protocol scaling via CEX-Bus structures.

Ordering Information

Technical Specifications

Installation Guidelines

• DIN Rail Attachment: Hook the TP830 baseplate onto a standard horizontal TS 35 DIN rail. Ensure the locking mechanisms engage securely against the metal surface to guarantee a low-resistance chassis grounding connection.
• Module Seating: Slide the PM861A processor core vertically downward into the baseplate guides. Press firmly until the latching clips lock into place, ensuring complete pin engagement with the backplane connectors.
• Bus Termination: You must insert the included TB850 CEX-bus terminator and TB807 ModuleBus terminator plugs into the open end of the cluster chain to ensure signal integrity and avoid communication reflections.
• Battery Initialization: Only connect the internal lithium backup battery link after the primary 24V DC power feed has been successfully energized to prevent unnecessary current draw and avoid premature cell depletion.