Product Details
Description
The PM851A 3BSE066484R1 processor module offers a cost-effective, high-performance solution for process control. With a 32-bit RISC architecture and 8 MB of RAM, it efficiently handles control loops and discrete logic. It features dual Ethernet ports for networking and an integrated ModuleBus for high-speed synchronization with local S800 I/O clusters. Designed for industrial reliability, it uses passive cooling and a fanless housing to ensure durability in factory environments.
Specifications
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Manufacturer: ABB
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Series: AC 800M
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Model Number: PM851A
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Order Number: 3BSE066484R1
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Product Type: Processor Unit
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Microprocessor: 32-bit RISC
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Onboard RAM: 8 MB
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Onboard Flash: 4 MB
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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, 2x RS-232, 1x ModuleBus
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Nominal Voltage: 24 V DC (19.2 - 30 V DC)
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Mounting: 35mm Standard DIN rail
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Protection Rating: IP20
Features
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Efficient Processing Core: Utilizes a specialized 32-bit architecture to ensure consistent execution times for critical regulatory control strategies.
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Integrated Ethernet Support: Built-in dual ports allow for versatile network topologies and reliable connectivity to supervisory HMI systems.
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Local I/O Connectivity: Features a high-speed ModuleBus link for direct, low-latency interfacing with S800 I/O expansion modules.
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Redundant Power Input: Designed with dual power terminals to enhance system availability and protect against local power supply failures.
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Compact Modular Design: Optimized for vertical mounting on DIN rails, facilitating easy integration into space-constrained control enclosures.
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Industrial Safety Integrity: Includes mechanical safety keying to ensure correct seating on baseplates and protection of the internal bus system.
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
Redundant Automation Systems: Ensuring Continuous Uptime in Critical Control Infrastructure
System reliability directly determines operational profitability across high stakes process industries. Modern industrial automation platforms must eliminate single points of failure to prevent catastrophic shutdowns. Deploying fault tolerant architecture safeguards complex facilities against unexpected hardware glitches, network disruptions, and maintenance outages.
Understanding Types of Noise in Electronic Circuits and Control Systems
Signal integrity directly determines measurement accuracy and loop stability across industrial automation environments. Electronic noise introduces unwanted stochastic interference into analog loops, sensor feedback lines, and digital fieldbus networks. Understanding how intrinsic electronic noise and external electromagnetic interference manifest allows control engineers to optimize signal conditioning and shield sensitive instrumentation effectively.
Why 24V DC Power Supplies Standardize Modern Industrial Automation
Industrial control cabinets worldwide rely on 24V DC as the universal power standard for field instrumentation, sensors, and controllers. Walk into any manufacturing plant, and you will find PLCs, human-machine interfaces (HMIs), and smart actuators running on extra-low voltage DC. Standardizing on 24V DC enhances operational safety, lowers cabinet footprint, and maintains steady control performance across factory networks.