ABB PM861A 3BSE018157R1
ABB PM861A 3BSE018157R1
ABB PM861A 3BSE018157R1
ABB PM861A 3BSE018157R1
ABB PM861A 3BSE018157R1

ABB PM861A | High-Performance Controller for Process Automation

  • Model: PM861A
  • Alt. P/N: 3BSE018157R1
  • Series: AC800M
  • Type: CPU Module / Processor Unit
  • Key Feature: High-performance processor, Ethernet/IP connectivity, modular design
  • Primary Use: Industrial process automation and control
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Part number: ABB PM861A
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Description

Key Technical Specifications
  • Model Number: PM861A (3BSE018157R1)
  • Manufacturer: ABB
  • Processor: 32-bit RISC processor
  • Memory: 16 MB RAM
  • Communication Ports:
    • 2 × RJ45 Ethernet ports (CN1, CN2)
    • 2 × RJ45 serial ports (COM3: RS-232C, COM4: isolated)
  • Expansion Slots: 2 (for memory cards or communication modules)
  • Operating Voltage: 24 V DC
  • Power Consumption: 2.5 W
  • Operating Temperature: -25°C to +70°C
  • Storage Temperature: -40°C to +85°C
  • Humidity: 5% to 95% non-condensing
  • Certifications: CE, UL, cULus, ATEX, ABS, BV, DNV-GL, LR, RS, RoHS, WEEE
  • Dimensions: 124 mm × 186.5 mm × 47 mm
  • Weight: 0.45 kg

    ABB PM861A 3BSE018157R1

    ABB PM861A 3BSE018157R1

Field Application & Problem Solved
In industrial automation, the ABB PM861A CPU module serves as the central processing unit for the AC800M controller system, addressing the need for reliable and efficient control in complex processes. It is commonly used in industries such as chemical, oil and gas, power generation, and manufacturing, where it manages tasks like motor control, process monitoring, and data acquisition.
The primary value of the PM861A lies in its ability to handle high-performance computing and communication tasks, ensuring seamless integration with various field devices and subsystems. Its robust design allows it to operate in harsh environments, minimizing downtime and maintenance costs. Additionally, the module supports multiple communication protocols, making it versatile for diverse industrial applications.
Installation & Maintenance Pitfalls (Expert Tips)
Proper Grounding: Ensure the module is properly grounded to avoid electrical noise and interference, which can disrupt communication or cause erratic behavior. Use shielded cables and connect them to designated ground points.
Temperature Management: Although the module operates within a wide temperature range, ensure adequate ventilation or cooling in the control cabinet to prevent overheating, especially in high ambient temperature environments.
Firmware Updates: Regularly check for firmware updates from ABB to patch vulnerabilities, improve performance, and add new features. Follow ABB’s recommended procedures for updating to avoid compatibility issues.
Backup Configuration: Before performing any maintenance or updates, always back up the controller’s configuration and program files. This ensures quick restoration in case of unexpected failures or corruption.
Regular Inspection: Periodically inspect the module for physical damage, loose connections, or signs of wear. Replace any damaged components promptly to maintain system reliability.

ABB PM861A 3BSE018157R1

ABB PM861A 3BSE018157R1

Technical Deep Dive & Overview
The ABB PM861A is a high-performance CPU module designed for the AC800M controller system, a flagship product in ABB’s industrial automation portfolio. It features a powerful 32-bit RISC processor with 16 MB RAM, enabling it to execute complex control algorithms and manage multiple tasks simultaneously. The module includes two Ethernet ports for high-speed communication and two serial ports for legacy device integration.
The PM861A supports modular expansion, allowing users to enhance functionality with additional communication or I/O modules. Its rugged design complies with industrial standards, ensuring reliable operation in harsh environments. The module is programmed using ABB’s Control Builder Plus software, which provides a user-friendly interface for developing and deploying control strategies.

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