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How many Pumps can be controlled using VW3A3502 multi-pump card ?

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

With this card, a complete pumping installation (up to 5 pumps) can be controlled with a single drive, providing constant pressure.

It incorporates the following operating modes:

  • Single or multiple variables
  • Single or multiple variables with changeover of auxiliary pumps
  • Single or multiple variables with limitation of operating time between pumps

These last two operating modes can be combined.


It is specially designed for applications such as:

  • Constant pressure water distribution and pumping systems
  • Booster stations
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