Product Details
Description
The PM866A 3BSE076359R1 is the core processor for demanding DCS environments. With a high-speed 32-bit RISC processor and 64 MB of RAM, it handles large application programs and data logging. It supports advanced control through dual Ethernet ports for redundant networking and a dedicated ModuleBus for local S800 I/O clusters. Built for high availability, it offers full CPU redundancy for seamless failover. Its robust design ensures thermal efficiency and long-term stability in industrial settings like power generation, oil and gas, and chemical processing.
Specifications
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Manufacturer: ABB
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Country of Origin: Sweden
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Model Number: PM866A
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Order Number: 3BSE076359R1
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Product Type: Programmable Logic Controller Processor
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Microprocessor: 32-bit RISC (96 MHz)
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Memory: 64 MB RAM / 8 MB Flash
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Dimensions: 186 mm x 119 mm x 135 mm
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Weight: 1.15 kg
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Interfaces: 2x RJ45 Ethernet ports, 2x RS-232 serial ports, 1x ModuleBus
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Power Supply: 24 V DC (19.2 to 30 V DC)
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Mounting: 35mm Standard DIN rail
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Protection Class: IP20
Features
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High-Tier Logic Performance: Optimized for high-speed execution of sophisticated control algorithms and massive discrete logic sequences.
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Redundant Architecture Support: Enables high-availability dual-controller configurations to protect against hardware failure and ensure continuous process uptime.
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Extensive Data Storage: The 64 MB RAM provides ample space for complex application variables, historical data buffering, and significant I/O mapping.
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Native Network Redundancy: Dual Ethernet ports allow for redundant network topologies, maintaining communication integrity between controllers and operator stations.
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Deterministic I/O Communication: High-speed ModuleBus link ensures real-time, low-latency signal updates for both local and remote S800 I/O modules.
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Advanced Diagnostics: Integrated system monitoring and LED status displays allow for rapid troubleshooting of internal faults and communication status.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Understanding Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.
Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
Standard electromechanical relays provide basic electrical isolation between low-voltage control circuits and high-power output loads. A traditional switching relay features a magnetic coil driving mechanical Common (COM), Normally-Open (NO), and Normally-Closed (NC) contacts. However, standard relays pose severe functional risks when deployed in critical safety interlock circuits. High current inrush or mechanical wear can weld contacts together permanently. If contact welding occurs in an emergency stop circuit, pressing the button fails to halt hazardous machinery movements. Consequently, global functional safety standards prohibit standard relays for critical machine guarding functions.