Product Details
Description
The PM876-1 3BDH000707R1 processor delivers the power needed for demanding process control applications. With a 32-bit architecture and 128 MB of RAM, it manages large I/O counts and complex control strategies. It supports seamless communication via Ethernet ports and high-speed ModuleBus for local S800 I/O synchronization. Designed for both redundant and non-redundant configurations, it ensures data protection and control during hardware transitions. Its industrial-grade construction ensures thermal efficiency and resistance to electromagnetic interference, making it ideal for heavy industrial environments like power plants and chemical facilities.
Specifications
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Manufacturer: ABB
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Series: AC 800M
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Model Number: PM876-1
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Order Number: 3BDH000707R1
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Product Type: PLC Processor Module
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Microprocessor: 32-bit RISC
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Onboard RAM: 128 MB
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Onboard Flash: 32 MB
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Dimensions: 186 mm x 119 mm x 135 mm
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Weight: 1.20 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 Class: IP20
Features
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High-Tier Memory Capacity: Equipped with 128 MB of RAM to support the most extensive application programs and complex data logging requirements.
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Redundancy Capability: Fully supports high-availability redundant CPU pairs to ensure bumpless failover and zero process downtime.
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Rapid Logic Execution: Optimized for high-speed calculation of regulatory control loops and discrete logic sequences in real-time.
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Network Integrity: Built-in dual Ethernet ports facilitate redundant network topologies for secure communication between controllers and HMI stations.
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Robust I/O Interface: Features a dedicated high-speed ModuleBus for low-latency communication with both local and remote S800 I/O clusters.
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Industrial Hardening: Features a fan-less design and specialized housing to ensure reliable performance in high-interference electrical environments.
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.