ABB AC 800PEC The high-performance control system

ABB AC 800PEC The high-performance control system

DESCRIPTION

High-performance applications with extremely fast control algorithms  – cycle times that range from 100 μs (microseconds) for fast control  loops to seconds for long-term operational transients – require  specialized control devices.That is why we have designed the AC 800PEC,  extending the capabilities of ABB’s well-known  automation technology to handle the high-speed  algorithms of processes such as power electronic  applications.

The AC 800PEC has a unique combination of  features for demanding applications:  

• Short cycle times, down to 100 μs 

• High processing power 

• Fast communication and I/O via optical links 

• Programming tools: 

- System engineering with IEC61131-3  languages using ABB’s Control Builder, both  Compact and Professional versions available 

- Product and control development using  MATLAB®/Simulink® for model-based design,  easily bridging the gap from simulation to  implementation 

• Full integration into ABB Ability™ System 800xA 

• Innovative and flexible use of FPGAs to include  protocols and application functionality in the  devices without creating additional processor  load 

• Optical communication 

• Industrial grade hardware with no moving parts 

• Long life cycle, easy upgrading 

• Robust reliance file system, insusceptible post  power loss

Built to control power in Process Industries

ABB has global expertise and technical know-how  in processes for industrial, marine and other  applications. As a result, the AC 800PEC is a key  controller for ABB’s industrial applications, and  also for third-party products and systems. The AC 800PEC is an efficient and flexible controller family. The benefits of short cycle times,  fast (input/output) I/O, high-processing power  and advanced control using MATLAB®/Simulink®:

• Increases process quality and output 

• Saves development and engineering costs 

• Reduces the energy consumption of your  products 

• Shortens time-to-market for your development  project 

• Saves headcount and resources in engineering  and software development 

• Enhances Return on Assets (ROA) 

• Hardware backup trip integrated with fast  COMBI I/O

Powerful hardware for efficient, high-speed  processing

The AC 800PEC combines the floating-point  computing performance of the CPU with the flexibility and high-speed capability of a FPGA.

The system is separated into three performance  levels covering different cycle times. Control  tasks are allocated depending on their speed  requirements:

• Very fast tasks down to 25 ns (nanoseconds for  FPGA tasks) 

• Fast tasks down to 100 μs (microseconds for  Matlab/Simulink tasks) 

• Slow tasks down to 1 ms (miliseconds for  control tasks)

Aluminium applications

• AC 800PEC Unit controller ↔ AC 800PEC Master  controller communication via PEC - PEC fiber  optical link (100 μs) 

• Units can be controlled independent from  master 

• Allows emergency operation (full smooth current  control, in emergency mode, without AC 800PEC,  available only in combination with DCS800 premagnetization) 

• Predictive maintenance features can be included

• Open circuit-, over current-, under voltage-,  over voltage protection packages included in  software - A newly developed OPC (open circuit protection) stand-alone PLC (programmable logic  controller), working in combination with the  AC 800PEC Master controller functions or as  standalone protection, in case of the master  panel maintenance 

• Controlled shutdown in an event, not needing  an immediate trip → less disturbance for your  processes 

• Potline load swing detection and load shedding  function integrated in application software 

• On Load Tap Changer fast tapping function in  order to prevent DC current overload during  disturbances 

• A special potline-to-earth resistance measurement system based on an AC 800PEC family  available (PERMS)  

• Maximum power regulation - To prevent over-shooting of power consumption and to support your power generators 

• Maximum DC voltage regulation for stabilizing  your process