ABB PM665 3BDS005799R1

ABB PM665 3BDS005799R1 is the core processor module of the AC800M/System800xA DCS system, adopting the PowerPC architecture and supporting multiple programming languages such as IEC61131-3. It features real-time logical operation, PID regulation, signal processing, and multi-protocol communication functions. It is equipped with an internal redundant voting circuit, enabling dual-machine hot standby without interference switching. It also integrates a high-speed speed measurement channel to adapt to the monitoring of rotating equipment. The module is equipped with hardware self-diagnosis, 24V DC power supply, and configuration programming is completed through Control Builder M. It is widely applied in continuous process industries such as thermal power, chemical engineering, and metallurgy, serving as the control core to complete process regulation and safety interlocking, ensuring the stable and continuous operation of the equipment

Core Product Features

1. The real-time control logic operation follows the IEC61131-3 standard control program, supporting structured text (ST), function block diagram (FBD), ladder diagram (LD), and sequential function diagram (SFC). It can perform switch sequence control, analog PID closed-loop regulation, complex process operation, cascade control and feedforward control. Supports multi-task priority scheduling, configurable periodic tasks, and the minimum scanning cycle meets the rapid adjustment requirements of the process.

2. Data acquisition and processing: Read the sensor signals collected by the I/O module through the backplane bus. Filtering of the original signal, range conversion, engineering unit conversion, and alarm judgment; Simultaneously save historical process data, event records, and fault logs.

3. Multi-protocol communication management with built-in Ethernet, RS232 serial port, and high-speed backplane link; Supports protocols such as Profibus DP, Modbus TCP, and MasterBus300. Connect with on-site frequency converters, instruments and remote I/O on one side. It communicates with the upper computer, operator station and server on one side, uploads process data and receives instructions from operators.

4. The hardware redundant voting module is equipped with an internal redundant voting circuit and supports a dual-CPU hot standby redundant architecture. When the main CPU fails, the standby PM665 switches without interference. The master-slave status is determined by the voting device and the output is verified to eliminate single-point failures and ensure that critical processes do not stop. ABB Group.

5. The high-speed speed measurement input integrates a speed acquisition channel, which can be directly connected to the pulse signals of rotating equipment for the measurement of steam turbine and motor speeds, and is used for closed-loop speed control and overspeed protection without the need for an additional independent speed measurement module.

6. System self-diagnosis and fault alarm: Continuously self-check the CPU, memory, Flash, power supply, and communication link. The LED indicator lights on the module panel show the operation, fault and communication status. Fault information is stored in the log and uploaded to the 800xA monitoring system for convenient and rapid troubleshooting. It is equipped with overvoltage, overcurrent and overheat protection.

PM665 3BDS005799R1 is the brain of the entire DCS/AC800M control system: it is responsible for receiving process parameters collected by on-site sensors, running control algorithms, calculating output instructions, controlling valves, pumps, motors, and actuators, and maintaining process stability. Coordinate the data exchange of all I/O modules and communication modules within the rack; Realize interlocking protection and safety interlocks during the production process, and trigger emergency shutdowns under abnormal working conditions. Upload the on-site data to the operator's screen for the operator to monitor and manually intervene. In the scenario of redundant configuration, the hot standby of the controller is achieved to ensure the continuous operation of production lines such as power plants and chemical plants that cannot be shut down at will. Realize protocol intercommunication among instruments and frequency converters of different brands, and integrate multiple types of equipment into a single control system.

How to use

1. Hardware Installation

• Install in an AC800M standard rack (TP830 backplane base), DIN rack mount with plug-in design;
• Connect to a 24V DC power supply; Backplane bus connects to I/O modules; 
• Network cable connects to Ethernet, serial port connects to a debugging computer; High-speed link port is used for data synchronization between dual redundant CPUs; 
• Speed measurement terminals connect to the pulse sensor of the rotating equipment;

Note: Ensure proper shielding within the industrial rack, and separate power and signal cables to reduce EMC interference.

2. Commissioning and Maintenance

• Perform no-load commissioning first, without field actuators, to verify the logic;
• Gradually introduce field equipment, tune PID parameters, and set alarm thresholds;
• Routine: Check module indicator lights and read diagnostic logs; replace lithium batteries regularly to prevent data loss during power outages;
• Reinstall the program after modifications; for damaged modules, hot-swap to replace with spare parts, and restore by downloading the original project. Ensure proper shielding within the server rack, and separate power and signal cables to reduce EMC interference.

Applicable industries and processes

This is a critical process industrial controller, primarily used in production facilities where arbitrary shutdowns are not permitted:

1. Power Industry: Boiler and turbine control in thermal power plants, auxiliary machine interlocking and speed control in generator sets, and water treatment in power plants;

2. Petrochemical Industry: Refining units, reactors, and distillation towers; closed-loop control of temperature, pressure, and flow; and safety interlocks;

3. Metallurgical Industry: Blast furnaces and steel rolling production lines; heating furnace temperature control;

4. Water Treatment: Large-scale wastewater treatment plants and waterworks; automatic pump and valve control;

5. Paper and Pharmaceutical Industries: Continuous process production lines; batch control;

6. It can also be used in large-scale discrete automated production lines and large building energy management.

Applicable System Platforms: ABB System 800xA, AC800M controller rack, and Advant Master control system.