Description
The ABB PM825 3BSE034193R1 is a high-performance process automation controller within ABB’s AC 800M series, engineered for demanding industrial applications requiring robust control, scalability, and cybersecurity. Designed for industries like power generation, water treatment, and manufacturing, this controller combines a powerful 500 MHz processor with 8 MB user memory to execute complex IEC 61131-3 logic (FBD, LD, ST, SFC) at deterministic scan cycles down to 0.1 ms. Integrated dual Gigabit Ethernet ports support real-time communication via OPC UA, Modbus TCP, and IEC 61850, enabling seamless integration with HMI/SCADA systems and smart field devices. With its rugged design (-40°C to +70°C operating range) and compliance with industrial cybersecurity standards, the ABB PM825 serves as a reliable backbone for ABB’s 800xA DCS, balancing high-speed control with future-ready connectivity.

ABB PM825
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | PM825 3BSE034193R1 |
| Manufacturer | ABB |
| Product Type | Programmable Automation Controller (PAC) |
| Processor | 32-bit RISC @ 500 MHz |
| User Memory | 8 MB (program) / 16 MB (data) |
| I/O Capacity | Up to 4,096 process variables |
| Programming Standards | IEC 61131-3 (FBD, LD, ST, SFC, CFC) |
| Scan Cycle Time | 0.1 ms (min. for critical tasks) |
| Communication Ports | 2 × Gigabit Ethernet, 1 × RS-232/485 |
| Protocols | OPC UA, Modbus TCP, IEC 61850, Web Services |
| Expansion Slots | 3 (for PFEA111-20, CI854, etc.) |
| Operating Temperature | -40°C to +70°C |
| Power Supply | 24 VDC (±20%) |
| Power Consumption | 12 W (max) |
| Housing Protection | IP20 (DIN-rail/rack mount) |
| Certifications | CE, UL, cULus, DNV-GL, RoHS, IEC 62443 |
| MTBF | 400,000 hours |
Main Features and Advantages
High-speed deterministic control: Executes motion control and PID loops at 0.1 ms intervals for precision-critical applications like turbine control or high-speed packaging lines. Redundant hot-swap support ensures <100>
Advanced cybersecurity: Hardware-secured boot, role-based access control (RBAC), and encrypted firmware updates (IEC 62443-4-2 compliant). Runtime intrusion detection blocks unauthorized configuration changes within 50 ms.
Seamless integration: Native OPC UA Pub/Sub enables IIoT connectivity for predictive maintenance. Backward-compatible with AC 800M I/O modules (e.g., SD822 digital inputs). Embedded web server provides real-time diagnostics without proprietary tools.
Application Field
The ABB PM825 3BSE034193R1 excels in:
Energy Management: Grid frequency stabilization in renewable power plants using IEC 61850 GOOSE.
Water Infrastructure: Adaptive pump control in wastewater networks with Modbus TCP RTU integration.
Chemical Processing: Batch reactor sequencing with SFC and recipe management.
Discrete Manufacturing: Robotic cell synchronization (≤0.5 ms axis coordination).
Marine Systems: DNV-GL-certified propulsion control in vessel engine rooms.
Related Products
PM865AK01 – High-end controller for large-scale DCS.
PFEA112-20 3BSE050091R20 – Redundant PROFIBUS master module.
CI871K01 – Gigabit Ethernet interface for IT/OT convergence.
SD823 – 32-channel digital input module.
TA516V2 – Terminal board with surge protection.
SA801F – Fieldbus segment protector.

ABB PM825
Installation and Maintenance
Pre-installation preparation: Ensure 24VDC power stability (±5% ripple). Ground chassis via 6 mm² copper cable to plant earth. Configure network segregation (VLANs) for OPC UA traffic.
Maintenance recommendations: Monitor CPU load via web interface (<85>



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