PM864AK01 ABB Classic Series PLC Processor Unit 3BSE018161R1

PM864AK01 System Architecture & Technical Specifications

The PM864AK01 (Article Number: 3BSE018161R1) represents an advanced high-performance central processing unit within the ABB System 800xA infrastructure. Designed for high-availability industrial networks, this processor utilizes an MPC862 architecture running at 96 MHz, providing a high-speed execution rate of 0.15 ms per 1,000 boolean operations. It incorporates 32 MB of total system memory, allocating 23.522 MB specifically for user application tasks.

Core Engineering Parameters Matrix

• Brand & Model: ABB PM864AK01
• Series Identification: System 800xA Classic Controller
• Processor Architecture: MPC862 (96 MHz clock speed)
• Application Memory: 23.522 MB available RAM out of 32 MB
• Firmware Storage: 2 MB Flash PROM
• Execution Speed: 0.15 ms per 1000 boolean logic instructions
• Redundancy & Switchover: Full CPU and CEX-Bus redundancy support with max 10 ms switch-over time
• Power Supply Requirements: 24V DC nominal (19.2 to 30 V DC range)
• Power Dissipation: Typical 6.9 W (Maximum 11.4 W)
• Operating Environment: +5 °C to +55 °C temperature range, G3 corrosion protection
• Physical Footprint: 196 mm width x 119 mm height x 135 mm depth, weighing 1200 g with base plate

Mechanical Deployment & Mounting Guidelines

• Slide and lock mechanism facilitates rapid DIN rail attachment and detachment.
• TP830 base plate houses the unique hardware Ethernet address label for system identification.
• Dual RJ45 Ethernet ports (CN1, CN2) interface directly with 100Mbit/s switched control network backbones.
• Isolated COM4 serial port provides secure connection pathways for local configuration service tools.

Diagnostic Suite & System Fault Management

• Maintains an event queue capacity of up to 3,000 events per OPC client for rapid post-mortem analysis.
• Front-panel LED indicators display real-time status updates for power, execution, and communication channels.
• Dedicated hardware INIT push button allows controlled board-level resets during commissioning phases.

Compatible Hardware Ecosystem & Target Applications

• Supported Subsystems: S800 I/O clusters, Modulebus configurations (up to 96 non-redundant or 84 redundant modules).
• Bus Extension: Sectioned CEX-Bus layouts via matched pairs of BC810 couplers supporting up to 12 communication modules.
• Industrial Applications: Continuous chemical processing plants, marine vessel automation, power distribution substations, and heavy manufacturing lines.

Global Logistics, Warranty, and Compliance

• Fulfillment & Shipping: Immediate dispatch within 24-48 hours via secure international couriers including FedEx, UPS, and DHL.
• Warranty Protection: Backed by a comprehensive 12-month replacement warranty covering component integrity.
• Regulatory Standards: Compliant with CE, UL 508, UL 60079-15 hazardous locations, and marine certifications (ABS, BV, DNV-GL, LR).

Global PLC Spare HUB's Insight

Field engineering data indicates that upgrading legacy systems to the PM864AK01 significantly alleviates task execution bottlenecks in large control loops. During a recent multi-node paper mill migration, implementing dual PM864AK01 processors with a BC810 CEX-bus splitter reduced cycle time variations to under 1 ms per application program. Technicians should always check that firmware version mappings match the Control Builder project configuration before executing live master-to-backup controller synchronization.

Frequently Asked Questions

Q: What specific hardware distinction exists between the COM3 and COM4 serial ports on the base plate?

A: COM3 functions as an RS-232C port with full modem control signals and RTS-CTS support up to 19,200 baud. In contrast, COM4 is an optically isolated RS-232C service port operating fixed at 9,600 baud without RTS-CTS handshaking, designed specifically for safe local configuration tool hookups.

Q: How does the controller handle clock synchronization across multiple nodes?

A: The unit utilizes the CNCP protocol to maintain precise clock synchronization within 1 ms intervals across multiple AC 800M controllers, preserving real-time stability within 100 ppm.

Q: What is the recommended purchasing strategy when sourcing replacement units for obsolete control architectures?

A: When replacing a legacy controller, always verify the exact article number (3BSE018161R1) and ensure your spare inventory includes a compatible TP830 base plate to retain the correct hardware Ethernet address mapping.

Q: What field symptoms typically indicate a failing internal backup battery?

A: A degraded 3.6V Lithium backup battery will trigger diagnostic system alarms regarding volatile memory retention during unexpected power interruptions; preventive replacement should occur during scheduled plant turnarounds.

Q: Can the processor maintain full communication throughput under heavy OPC server polling loads?

A: Yes, the processor is engineered to handle transmission speeds between 36-86 events/sec and 113-143 data messages/sec per OPC client without dropping packets on the 100Mbit/s switched Ethernet backbone.

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