The Sema WPC Water Pump Controller

The WPC shares all of the robustness and ease of use of the MPC but, unlike the MPC is available in sizes up to 250Kw.


A 4.0kw WPC3-4.0

All of the WPC's regardless of size share these features in common:

  • Loss of Prime protection is built in. If the pump runs dry it will stop and a message will appear on the screen saying that it has stopped for that reason.
  • Maximum Run Time timer. If enabled this timer will only allow the pump to run continuously for the number of hours that are entered before it will stop and display a message advising the operator to check for leaks.
  • Dual set points. Two pressure set-points can be switched between with a digital input.
  • An input is dedicated to monitoring optional external interlocks (Low tank water level etc.)
  • Just like the MPC all parameters can be adjusted without stopping the pump
  • Revolutionary 'Ripple Control' software uses the rate of pressure drop to determine how much water is being used and whether the pump should continue to run or not.


A WPC3-45
(Note the power usage on the VSD's screen, this shows a power saving of 15kw !!)