The ABB PM864AK01 (3BSE018161R1) is a high-speed MPC862 processor unit designed for AC 800M and 800xA control systems.It features 32MB RAM, dual Ethernet ports, and supports up to 96 I/O modules, providing reliable real-time execution for demanding industrial automation tasks
ABB PM864AK01 | 3BSE018161R1 | AC 800M Processor Unit
Functional Overview
The ABB PM864AK01 serves as a high-performance central processing hub for the AC 800M controller range within the 800xA automation platform. Engineered for industrial environments requiring high availability, this MPC862-based unit executes complex control logic for both continuous and batch processing. The processor excels in brownfield migrations and system expansions by maintaining compatibility across various 800xA hardware versions (4.0 through 6.0). Its design prioritizes deterministic performance, ensuring that critical control loops remain stable even under high communication and logic loads.
Key Operational Characteristics
Integrated Communication: Features dual Ethernet channels for peer-to-peer communication and dedicated serial ports (COM3 and COM4) for peripheral connectivity.
System Scalability: Supports up to 12 CEX-Bus modules and manages up to 96 I/O modules in non-redundant configurations.
Comprehensive Hardware Kit: Provided as a complete assembly including the processor module, TP830 baseplate, bus terminators, and the necessary backup battery.
Reliable Execution: Capable of running up to 32 concurrent control tasks with cycle times reaching 1 ms for time-critical applications.
Memory Management: Utilizes 32 MB of RAM with over 23 MB dedicated to user applications, backed by Flash PROM for firmware storage and a lithium battery for data retention during power cycles.
Technical Specifications
Article Number: 3BSE018161R1
Processor Architecture: MPC862 running at 96 MHz
Memory Capacity: 32 MB RAM / 2 MB Flash PROM
Application Memory: 23.522 MB available for logic
Logic Performance: 0.15 ms per 1000 boolean operations
Task Capacity: 32 tasks and 32 applications per controller
Standard Power Input: 24 V DC (Acceptable range 19.2–30 V DC)
Current Consumption: 287 mA typical / 487 mA maximum
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Frequently Asked Questions
Q: What are the backplane current and configuration limits when expanding axis modules on a single rail?A: The module must be inserted into an authorized Kinetix 6000 power rail, supporting up to seven axis modules alongside one master power module. The cumulative peak current draw must not exceed the structural rating of the shared copper backplane link.Q: Is this hardware compatible with live hot-swapping procedures?A: No. The shared 650 VDC bus lines pose arc-flash and component damage hazards. System DC bus voltage must be entirely drained and verified below safe thresholds before seating or unseating the module from the rail structure.Q: Can the internal 115 Ohm shunt resistor handle high-inertia braking loads?A: The internal shunt resistor is designed for short-duration thermal dissipation. High-inertia or cyclic deceleration applications require an external, isolated shunt module to prevent DC bus overvoltage faults.
Field Installation Guidelines
Enclosure Clearance & Thermal Profile: Maintain a minimum enclosure installation depth of 10.7 inches. Ensure unimpeded vertical ventilation spacing above and below the module chassis to prevent heat sink thermal saturation.
Cable Separation Architecture: Physically isolate unshielded high-voltage power cables, including motor leads and shunt resistor lines, from low-level digital feedback encoder loops and communication wires to suppress cross-talk.
Shielding and Ground Boundary: Terminate all motor cable shields at the designated grounding clamp on the power rail base. Maintain a low-impedance ground plane across the entire mounting subpanel.
Overcurrent Protection: Install specified circuit breakers or high-speed semiconductor fuses upstream of the main power distribution block to guard the internal solid-state components against phase-to-phase short circuits.
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