ABB PM862 3BSE081636R1
ABB PM862 3BSE081636R1
ABB PM862 3BSE081636R1
ABB PM862 3BSE081636R1
ABB PM862 3BSE081636R1

ABB PM862 3BSE081636R1 | AC800M Series Main Processor Module

  • Brand: ABB
  • Model: PM862 3BSE081636R1
  • Product Type: Main Processor Module (CPU)
  • Series: AC800M (PM800 Series)
  • Core Function: Executes control logic, manages system communication, and processes I/O data for ABB AC800M distributed control systems (DCS) and PLCs.
  • Key Specs: 32-bit RISC processor, 512MB RAM, 2GB Flash memory, supports Ethernet/IP, Modbus TCP, and PROFINET.
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Part number: ABB PM862 3BSE081636R1
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Description

PM862 3BSE081636R1: Product Overview
This component is a main processor module (CPU) within ABB’s AC800M series, a modular platform for industrial distributed control systems (DCS) and programmable logic controllers (PLCs). In an automation architecture, it serves as the central processing unit, responsible for executing user-defined control logic, managing communication with I/O modules and field devices, and coordinating data exchange with higher-level systems (e.g., SCADA, MES). Its role is to ensure deterministic performance for real-time process control, from simple machine sequencing to complex multi-variable regulation.
The core functionality involves running control programs (developed in ABB’s Control Builder M software), processing analog/digital I/O signals via connected modules, and handling network communication through integrated ports. It supports multiple industrial protocols (Ethernet/IP, Modbus TCP, PROFINET) for integration with third-party devices, and includes built-in diagnostics for system health monitoring (e.g., memory usage, communication status). The module also manages redundancy in paired configurations, ensuring fail-safe operation in critical applications.
It belongs to the AC800M PM800 series, a product family optimized for scalability, backward compatibility, and long-term support. The platform’s benefits include modular expansion (adding I/O or communication modules without replacing the CPU), global engineering tool consistency (Control Builder M), and adherence to industrial standards (IEC 61131-3 for programming), which simplifies training and system migration.

ABB PM862 3BSE081636R1

ABB PM862 3BSE081636R1

PM862 3BSE081636R1: Technical Specifications
  • Model Number: PM862 3BSE081636R1
  • Manufacturer: ABB
  • Product Type: Main Processor Module (CPU)
  • Processor Type: 32-bit RISC (Reduced Instruction Set Computer)
  • Clock Speed: 266 MHz
  • Memory: 512MB RAM (volatile), 2GB Flash (non-volatile for program storage)
  • Communication Interfaces: 2x Ethernet (10/100 Mbps), 1x USB (for configuration), 1x RS-232 (serial debug)
  • Protocol Support: Ethernet/IP, Modbus TCP, PROFINET, IEC 61850 (with optional firmware)
  • Operating Temperature: 0°C to +55°C
  • Storage Temperature: -40°C to +70°C
  • Power Supply: 24V DC (±10% tolerance, 15W max consumption)
  • Dimensions: 140mm x 100mm x 45mm (WxHxD)
  • Weight: 0.4kg
  • Redundancy Support: Hot-standby (paired with identical module for failover)
Core Features & Customer Value​
The module’s design prioritizes processing reliability, system integration flexibility, and operational longevity. The 32-bit RISC processor with 266 MHz clock speed ensures deterministic execution of control logic, critical for applications like turbine speed control or chemical batch sequencing where timing deviations risk process instability. For engineers, this predictability simplifies validation of control strategies and reduces debugging time.
Integrated communication interfaces eliminate the need for external gateways, streamlining system architecture. The dual Ethernet ports support daisy-chaining of I/O modules or connection to plant networks, while protocol support (Ethernet/IP, Modbus TCP) enables integration with legacy devices (e.g., Siemens PLCs) or modern SCADA systems. This reduces integration costs and avoids proprietary protocol lock-in.
Redundancy support (hot-standby pairing) enhances system availability for critical processes (e.g., power generation, oil refining). If the primary module fails, the standby unit assumes control within milliseconds, minimizing downtime. For maintenance teams, this feature allows scheduled upgrades without halting production, as one module can be serviced while the other runs the process.
Scalable memory (512MB RAM, 2GB Flash) accommodates growing program complexity, from small machine control to large refinery-wide DCS applications. The Flash memory stores programs and configuration data non-volatily, ensuring retention during power cycles. For end-users, this means future-proofing investments, as the module can handle expanded control requirements without replacement.

ABB PM862 3BSE081636R1

ABB PM862 3BSE081636R1

Typical Applications​
In a natural gas processing plant, the module executes control logic for compressor sequencing and pressure regulation. It processes analog inputs from pressure transmitters (4-20mA) and outputs to VFDs (0-10V), while communicating with a SCADA system via Ethernet/IP to report real-time status. Redundancy ensures uninterrupted operation during peak demand.
At a wastewater treatment facility, the module manages biological reactor control, adjusting aeration blowers (via analog outputs) based on dissolved oxygen sensor inputs (4-20mA). It logs data to a historian via Modbus TCP and triggers alarms for pH/temperature excursions, maintaining effluent compliance.
In a steel mill’s hot strip mill, the module coordinates roughing mill stand speeds using encoder feedback (digital inputs) and outputs to hydraulic screw-downs. Its deterministic processing ensures synchronized mill operations, reducing strip thickness variability.

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