Overview

The ABB PM665 is a high-performance CPU processor module designed for the Advant Open Control System (OCS). It serves as the central processing unit for an Advant station, executing control logic, managing I/O communication, and performing diagnostics. With high-speed processing and substantial memory, the PM665 handles complex control loops, sequential operations, and batch processes, making it critical for mission-critical industrial automation.

Technical Data

Key Functions and Role

1. Deterministic Control: Ensures predictable, high-speed execution of control applications, critical for processes requiring precise timing.

2. I/O Management: Efficiently scans inputs and updates outputs for connected Advant I/O modules.

3. Communication Gateway: Acts as the central hub for operator stations, engineering tools, and higher-level networks.

4. Diagnostics & Error Handling: Monitors system health, logs faults, and manages failover or graceful shutdowns if redundancy is configured.

Typical Applications: Mission-Critical Automation

• Pulp & Paper Mills: Controls stock preparation, bleaching, and paper machine drives, maintaining product quality.

• Chemical & Pharmaceutical Batch Processing: Manages complex sequential logic, recipe compliance, and safety interlocks.

• Oil & Gas Processing: Oversees compressors, pump stations, and safety-critical systems in refineries and offshore platforms.

• Mining & Metals: Coordinates smelting, rolling, and material handling systems with hundreds of I/O points.

The PM665 ensures the reliable execution of critical control strategies in high-stakes industrial environments.

FAQ: ABB PM665 (3BDS005799R1)

Q1: Why is it called an "Intelligent Module"?
A1: Because it functions as a full-fledged computer capable of executing complex control programs and managing all system I/O autonomously, not just passing data or signals.

Q2: Does the PM665 support redundancy?
A2: Yes. In redundant configurations, two PM665 modules operate in parallel. If the active CPU fails, the backup takes over instantly without process interruption.

Q3: How does the PM665 ensure deterministic control?
A3: It prioritizes control logic execution over non-critical tasks (like communications) to keep scan times constant, ensuring inputs are read, programs executed, and outputs updated predictably.