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Productivity, Flexibility, Engineering Productivity

PACMotion is a multi-axis servo motion controller for the PACSystems RX3i designed to serve the high-end needs of complex motion applications.

PACMotion maximizes the production potential of your machine so that you can sell more. When you have high performance needs that include high-speed motion applications, PACMotion provides the performance, flexibility, and productivity to make the most for your customers. PACMotion is a revolutionary new motion controller for the PACSystems RX3i, breaking the mold of what a motion controller can do. It controls up to 40 axes in a single rack over a high-speed backplane, with a hybrid distributed control architecture to ensure you get the speed and accuracy to maximize your machine.

(Read White Paper for more information)

Productivity

• PACMotion updates the position loop and path planning at consistent rates regardless of the number of axes
• No performance degradation as you increase the number of axes
• Path planning and all servo loop closure is done on a powerful coprocessor in each PACMotion module to maximize processor time available to run your application program
• Motion path planning updated at a blazing 1 millisecond
• Position loop update occurs every 500 microseconds
• Axes are updated simultaneously to eliminate phase delays that can cause positional errors
• Distributed control architecture keeps the processing load off of the main processor so to ensure consistent performance at high speeds and high axis counts
• Noise immune fiber optic I/O and servo interface increases system reliability maximizing machine availability
• Three high speed interrupts for each PACMotion module can be configured as event or time-based interrupts to the RX3i CPU enabling tight coordination of motion and machine events
• On demand data exchange between PACMotion modules and RX3i CPU minimizes scan impact and ensures program access to the most recent data
• Up to eight axes can be configured for synchronous or time-delayed start; start signal is independent of RX3i CPU eliminating potential processing delays

Flexibility

• Flexible configuration of the master axis, I/O, and system architecture
• Centralized or hybrid distributed control
• Amplifiers can be located centrally or up to 400 meters from the rack
• On the fly changes make it easy to do instant product change-over at the push of a button for short production runs
• A flexible master position source can be a real (encoder) or a virtual (time-based) master and master sources can be changed on the fly
• Master axis commands are passed over the high speed backplane -- any axis to be a master or a slave to any other axis

Engineering Productivity for Quicker Time to Market

• Integrating the motion and logic onto one system reduces program complexity and greatly simplifies the synchronization of motion and machine control logic
• A common programming language, tag database, and function blocks allows faster program development time to market and machine commissioning
• More than 50 built-in motion functions designed to comply with PLCOpen standards are available in Function Blocks or Structured Text languages
• Powerful diagnostic tools enable high speed data capture and graphical display and a separate diagnostic program that runs independent of the main program

For more information, refer to the following white paper on the subject: Integrating Next Generation Motion Control with Programmable Automation Controllers.