Technical Parameters of ABB 3BSE018161R1 PR:D PM864A AC 800M Processor Unit
1. General Overview
The ABB 3BSE018161R1 PR:D PM864A is a high – performance processor unit designed for the ABB AC 800M controller family. It serves as the core component in industrial automation systems, responsible for executing control algorithms, handling data communication, and managing the overall operation of the automation process.
2. Processor Performance
- CPU Type and Speed: It is equipped with a powerful processor that offers a high – speed clock rate. The exact clock speed may vary depending on the specific revision, but generally, it operates in the range that allows for real – time control of complex industrial processes. For example, it can process thousands of instructions per second, enabling it to handle multiple control tasks simultaneously without any noticeable lag.
- Memory Capacity:
- RAM: The PM864A comes with a substantial amount of Random Access Memory (RAM). This RAM is used for storing temporary data during the execution of control programs, such as input/output values, intermediate calculation results, and process variables. A typical configuration may have several megabytes of RAM, which is sufficient for most medium – to – large – scale industrial automation applications.
- Flash Memory: It also has a significant amount of Flash memory. Flash memory is non – volatile, meaning it retains data even when the power is turned off. This is used for storing the control program, configuration settings, and other permanent data. The size of the Flash memory allows for the storage of complex control logic and large – scale automation projects.
3. Communication Capabilities
- Redundant Communication: The PM864A supports redundant communication interfaces. This is crucial in industrial environments where system reliability is of utmost importance. Redundant communication ensures that if one communication path fails, the other can take over seamlessly, preventing any disruption to the control process. For example, it can support dual Ethernet ports for redundant network connections.
- Multiple Communication Protocols: It is compatible with a wide range of industrial communication protocols, including but not limited to:
- PROFIBUS: A widely used fieldbus protocol in industrial automation. It allows for high – speed communication between the controller and various field devices such as sensors, actuators, and drives.
- Modbus: A simple and versatile communication protocol that enables communication between different types of industrial equipment.
- Ethernet/IP: An industrial Ethernet protocol that provides high – bandwidth communication for real – time data exchange in modern industrial networks.
4. Input/Output (I/O) Handling
- I/O Capacity: The processor unit can handle a large number of I/O points. It can be connected to a variety of I/O modules, which allows it to interface with different types of analog and digital signals from the industrial process. For instance, it can support hundreds of digital input/output channels for monitoring and controlling binary states (on/off) of devices, as well as multiple analog input/output channels for measuring and controlling continuous variables such as temperature, pressure, and flow.
- I/O Scanning Rate: It has a fast I/O scanning rate, which means it can read the input signals from the field devices and update the output signals to the actuators at a high frequency. This is essential for maintaining precise control over the industrial process. For example, it can scan I/O points at a rate of several milliseconds, ensuring that the control system responds quickly to any changes in the process.
5. Redundancy and Reliability
- Hardware Redundancy: The PM864A can be configured in a redundant setup, where two or more processor units work together. In a redundant system, one unit acts as the primary controller, while the others are in standby mode. If the primary unit fails, the standby unit takes over immediately, minimizing the downtime of the automation system.
- Self – Diagnostics: It has built – in self – diagnostic capabilities. The processor continuously monitors its own hardware and software status, detecting any potential faults or errors. If a fault is detected, it can generate an alarm or take appropriate corrective actions, such as switching to a redundant unit or initiating a safe shutdown of the process.
6. Environmental Specifications
- Operating Temperature: It is designed to operate in a wide range of temperatures, typically from 0°C to 60°C. This allows it to be used in various industrial environments, including factories, power plants, and oil and gas facilities, where the temperature conditions can be challenging.
- Humidity Tolerance: The PM864A can withstand a certain level of humidity, usually up to 95% non – condensing. This ensures its reliable operation in humid industrial settings.
- Shock and Vibration Resistance: It is built to meet industrial standards for shock and vibration resistance. This is important as industrial equipment is often subjected to mechanical stresses during operation, and the processor unit must be able to function properly under these conditions.
7. Software Compatibility
- Control Builder M: The PM864A is fully compatible with ABB’s Control Builder M software. This software provides a user – friendly environment for programming, configuring, and commissioning the control system. It allows engineers to develop complex control strategies using a variety of programming languages, such as ladder logic, function block diagrams, and structured text.
- Firmware Updates: ABB regularly releases firmware updates for the PM864A to improve its performance, add new features, and enhance security. These updates can be easily installed using the appropriate software tools, ensuring that the processor unit remains up – to – date with the latest technology.
In summary, the ABB 3BSE018161R1 PR:D PM864A AC 800M Processor Unit is a robust, high – performance device that offers advanced features for industrial automation. Its powerful processor, extensive communication capabilities, large I/O handling capacity, high reliability, and software compatibility make it a suitable choice for a wide range of industrial control applications.
