Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| sales@plc-automations.com | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |

The ABB PM645A 3BDS005799R1 is a high-performance CPU processor unit designed for ABB AC800M and AC800PEC control systems. It is engineered to meet the demands of complex industrial automation processes, providing real-time control, data processing, and communication capabilities in a compact and efficient package. The PM645A is ideally suited for industries requiring high-speed data handling, such as power generation, chemical processing, oil and gas, and manufacturing.
The PM645A ensures seamless integration with other ABB control components and third-party devices, supporting Ethernet, Profibus DP, and Modbus communication protocols. This processor unit is designed to offer high scalability, supporting up to 8192 I/O points, making it an excellent choice for both small-scale and large-scale applications.
| Parameter | Value |
|---|---|
| Dimensions | 252 × 273 × 40 mm |
| Weight | 1.75 kg |
| Processor | 32-bit ARM Cortex-M7 CPU |
| Communication | Ethernet, Profibus DP, Modbus |
| Operating Temperature | -20°C to +60°C |
| Power Supply | 24 V DC ± 20% |
| RAM | 512 MB |
| Program Memory | 256 MB |
| I/O Capacity | Up to 8192 I/O points |
| Diagnostic LEDs | Yes (for real-time monitoring) |
| Safety Certifications | UL, CE, RoHS |
The ABB PM645A CPU processor is widely used in industries that require precise automation control, including:
Power Generation: Ideal for managing turbines, generators, and transformers in power plants, ensuring efficient energy production and distribution.
Oil & Gas: Used in oil refineries, gas plants, and offshore platforms to control critical systems, ensuring safe and efficient extraction and processing operations.
Chemical Processing: The PM645A can control chemical reactors, mixers, and pumps, providing precise automation for complex chemical processes.
Manufacturing: Used for controlling assembly lines, robotic arms, and automated material handling, improving efficiency and reducing downtime in production environments.
Water Treatment: The PM645A is employed to control pumps, filters, and valves in water and wastewater treatment plants, maintaining a reliable and continuous flow of clean water.
High-Speed Processing: The 32-bit ARM Cortex-M7 CPU provides superior processing capabilities for complex automation tasks, ensuring real-time control and high-speed data handling.
Flexible Communication Options: The PM645A supports Ethernet, Profibus DP, and Modbus communication protocols, ensuring seamless integration into various industrial networks.
Scalable I/O Capacity: With the ability to handle up to 8192 I/O points, the PM645A is adaptable to both small and large-scale systems, offering flexibility for different automation applications.
Reliability: Designed for continuous 24/7 operation in harsh industrial environments, the PM645A operates in temperatures ranging from -20°C to +60°C.
Real-Time Diagnostics: Equipped with LED status indicators, the PM645A allows for real-time monitoring and fault detection, enabling quick troubleshooting.
Compact Design: With dimensions of 252 × 273 × 40 mm and a weight of 1.75 kg, the PM645A is a compact solution for space-constrained installations.
Brand: ABB
Series: AC800M Series
| Model | Description | Weight | Dimensions | Key Feature |
|---|---|---|---|---|
| PM644A | High-performance CPU with extended I/O capacity | 1.80 kg | 260 × 280 × 45 mm | Dual Ethernet ports |
| PM641A | Compact CPU for smaller systems | 1.50 kg | 245 × 265 × 40 mm | Optimized for smaller setups |
| PM645B | Enhanced version with more memory and features | 1.85 kg | 252 × 273 × 40 mm | Increased program memory |
| PM640A | Budget-friendly CPU for small to medium systems | 1.60 kg | 250 × 270 × 42 mm | Ideal for cost-effective applications |
| PM648A | Advanced processor with higher processing power | 2.00 kg | 270 × 280 × 45 mm | High-end features for complex tasks |
| Model Number | Parameters | Product Series | Application | Advantages |
|---|---|---|---|---|
| PM810V1 | 1 port, 10/100 Mbps | PM Series | Industrial Networking | Compact, reliable, cost-effective |
| PM810V2 | 2 ports, 100 Mbps | PM Series | Process Control Systems | Dual-port design, easy integration |
| PM820-1 | 2 ports, 1000 Mbps | PM Series | Factory Automation | High-speed communication, flexible |
| PM811V1 | 1 port, 10/100 Mbps | PM Series | Control Systems | Energy-efficient, space-saving |
| PM821-1 | 2 ports, 1000 Mbps | PM Series | Real-time Data Monitoring | High bandwidth, scalable solution |
Q: What processor does the PM645A use?
A: The PM645A uses a 32-bit ARM Cortex-M7 processor, offering high processing performance.
Q: How many I/O points can the PM645A handle?
A: The PM645A can handle up to 8192 I/O points, making it suitable for large-scale systems.
Q: What is the power supply requirement for the PM645A?
A: The PM645A requires a 24 V DC ± 20% power supply.
Q: What communication protocols are supported by the PM645A?
A: The PM645A supports Ethernet, Profibus DP, and Modbus communication protocols.
Q: What is the operating temperature range of the PM645A?
A: The PM645A operates in the temperature range of -20°C to +60°C.
Q: Does the PM645A have built-in diagnostics?
A: Yes, the PM645A is equipped with LED status indicators for real-time diagnostics and fault detection.
Q: What is the memory capacity of the PM645A?
A: The PM645A comes with 512 MB of RAM and 256 MB of program memory.
Q: Can the PM645A be used in large-scale systems?
A: Yes, the PM645A supports large-scale systems with up to 8192 I/O points.
Q: What industries benefit from the PM645A?
A: The PM645A is suitable for industries such as power generation, chemical processing, oil and gas, manufacturing, and water treatment.
Q: What certifications does the PM645A have?
A: The PM645A is certified with UL, CE, and RoHS compliance.
Authenticity guarantee
All product specifications are original and authentic imported products. We have an annual sales volume of 300 million yuan, and we only produce original and authentic products. All customers who cooperate with us directly online can enjoy low discounts.
Free warehouse
We have a complete range of product models, 80% of conventional models are in stock, and we have established channels in Asia, Africa, North America, South America, and Europe, effectively shortening the order processing time and satisfying customers in a timely manner.
Technical Team
Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
Thoughtful after-sales service
24-hour after-sales service guarantee team, professional and standardized management service system.