PM866AK01 3BSE076939R1 ABB Processor Unit In Stock

Product Architecture & Overview

The PM866AK01 (3BSE076939R1) serves as a high-performance processing unit for ABB AC 800M controllers.

This kit integrates an MPC866 microprocessor running at 133 MHz with 64 MB onboard RAM memory.

The unit delivers fast execution speeds of 0.09 ms per 1000 boolean operations.

Dual redundant Ethernet ports provide robust networking for demanding industrial automation setups.

Technical Specifications

• Processing Core & Memory
  • Brand: ABB
  • Model Kit: PM866AK01 (3BSE076939R1)
  • Series: AC 800M / System 800xA
  • Processor Type: MPC866 at 133 MHz clock frequency
  • System Memory: 64 MB RAM (51.389 MB available for user application)
  • Flash PROM Memory: 4 MB allocated for internal firmware storage
• Communication & I/O Interfaces
  • Ethernet Ports: 2 x RJ45 ports (10 Mbit/s, IEEE 802.3, MMS/IAC protocols)
  • Serial Interfaces: 1 x RS-232C (COM3 with modem control), 1 x isolated RS-232C (COM4 for tools)
  • CEX Bus Extension: Supports up to 12 communication modules with 2.4 A max current
  • Modulebus Capacity: Up to 96 I/O modules on single CPU setup
• Electrical & Environmental Ratings
  • Power Supply Input: 24 V DC (19.2 to 30 V DC range)
  • Power Dissipation: 5.1 W typical (8.6 W maximum)
  • Operating Temperature: +5 to +55 °C (+41 to +131 °F)
  • Environmental Protection: G3 conformal coating (ISA 71.04) with IP20 protection class
  • Safety Certifications: CE, UL 61010-1, UL 60079-15 Class 1 Zone 2, ISA Secure

Field Installation & Mechanical Setup

Mount the TP830 baseplate using the slide and lock DIN rail mechanism.

The baseplate contains a factory-assigned unique hardware MAC address label.

Attach communication modules on the standard CEX-Bus to expand networking capacity.

Connect redundant 24 V DC power feeds to maintain high system availability.

System Compatibility & Applications

The controller programs seamlessly through System 800xA Control Builder software.

It supports up to 32 applications and 64 programs per application simultaneously.

Engineers execute fast control cycles down to 1 ms for precise process management.

It integrates with electrical and optical Modulebus clusters for flexible S800 I/O expansion.

Advanced Diagnostic Capabilities

The controller maintains an internal event queue storing up to 3000 events per OPC client.

Front panel LEDs display immediate CPU operational status and system fault alerts.

It synchronizes real-time clocks within 1 ms across controllers via CNCP protocol.

The hardware logs communication errors and power supply status changes automatically.

Global PLC Spare HUB's Insight

During a steam turbine control upgrade, process jitter caused frequent communication packet drops.

Deploying the PM866AK01 processor resolved data latency with its 0.09 ms execution speed.

The dual Ethernet ports provided failover redundancy without losing critical OPC diagnostic telemetry.

Its G3 conformal coating prevented trace corrosion inside humid coastal generator enclosures.

Selection & Engineering Guidance

Select PM866AK01 when running complex logic requiring fast execution cycles.

Evaluate memory limits to ensure application code fits within the available 51.389 MB RAM limit.

Add BC810 or BC820 bus optical couplers when extending CEX buses across cabinets.

Package List & Global Logistics

Package Content: Includes one PM866AK01 processor unit and TP830 baseplate.

Warranty Coverage: Complete 12-month factory replacement guarantee.

Dispatch Speed: Ships within 24 to 48 hours from warehouse stock.

Express Carriers: Global delivery via FedEx, UPS, and DHL.

Frequently Asked Questions

Q1: How does the controller preserve system time during power outages?

A1: The internal 3.6 V lithium battery maintains real-time clock data during main supply interruption.

Q2: Can I connect non-isolated configuration tools directly to COM3?

A2: Use COM4 for engineering tools because it provides opto-isolation to protect serial ports.

Q3: What is the maximum number of I/O modules supported per single processor?

A3: A single unit manages up to 96 Modulebus I/O modules across electrical and optical clusters.

Q4: What protocol manages communication between the controller and OPC servers?

A4: The controller uses Manufacturing Message Service (MMS) protocol over switched Ethernet networks.

Q5: How do I verify the original hardware identity of the CPU baseplate?

A5: Read the factory MAC address printed directly on the label of the TP830 baseplate.

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