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Parker Hannifin has launched high-resolution analogue input and encoder option boards for electronic line shaft applications, machine tools and other demanding motion control tasks.

The new option boards increase the flexibility and capability of the AC drives of company’s AC890 modular systems and AC890PX high-power systems.

The 8903-EP encoder option board features an incremental encoder input for a reference encoder and a synthetic encoder output.

The encoder input provides optically isolated differential inputs on channels A, B and Z.

All inputs are compatible with RS422 and RS485 encoders, as well as encoders that provide output voltages as high as +/-30V.

The board embeds all the decoding logic required to interface the encoder input to the drive’s microprocessor, providing true plug-and-play connectivity.

Three non-isolated differential digital outputs are used for synthesising an encoder output.

Installed on a drive pre-fitted with an 8902-EQ incremental encoder option, the new board can be used to create an electronic line shaft between the reference and feedback encoders.

The 8903-AI card adds a sixth analogue input to the AC890 and AC890PX drives.

It offers all the functionality of the 8903-EP encoder option board, as well as a high-resolution 16-bit +/-10V analogue input.

This makes the drive suitable for machine tool applications, where the drive will typically follow an analogue speed set point from a CNC and send back to the CNC the position of the controlled axis.

It provides the fast response times required for accurate position control.

Andy Evans, product manager for AC drives, said: ‘Option boards provide a very cost-effective means of tailoring a preferred drive to meet specific application requirements or expanding a drive to meet the needs of applications as they evolve over time.

‘These two new option cards expand the flexibility of the AC890 series, which has proven itself to be a popular choice in some of the industry’s most demanding applications,’ he added.

Parker Hannifin – Electromechanical and Drives

Parker Hannifin is the world’s leading diversified manufacturer of motion and control technologies and systems, providing precision-engineered solutions for a wide variety of mobile, industrial and aerospace markets. With a comprehensive portfolio of electromechanical actuators, servo motors, servo drives, operator displays, communications devices and variable speed AC and DC drives, the Electromechanical and Drives Division are uniquely placed to meet all of your motion control and drives requirements.

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