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What is the Difference between VW3A3502 and VW3A3503 multi-pump cards ?

 Thanks to check the differences as below:

·         The VW3 A3 502 multi-pump card ensures compatibility of pump applications developed for an Altivar 38 drive with an Altivar 61, without reprogramming.

·         The VW3 A3 503 multi-pump card is not compatible with pump applications developed for an Altivar 38 drive.

·         The VW3 A3 502 multi-pump card ensures a complete pumping installation (up to 5 pumps) can be controlled.

·         The VW3 A3 503 multi-pump card ensures a complete pumping installation (up to 4 pumps) can be controlled with a single drive, providing constant pressure.

For more info, thanks to check the Attached document.

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