Pressure Signal & VSD Control


bulb.pngImportant Read: Get more out of your centre pivots



Smart VSD receiver units:

This unit does the same as our basic model below, but has extra functionality to deal with extended irrigation systems thatdo not consist of the "one pump one pivot" configuration.


If you have a more complicated system where you have multiple centre pivots connected to one pump, or multiple pumps connected to one system, you may benefit from letting our VSD receiver units take full control of your VSD's. This unit receives multiple pressure readings from different centre pivots and with a customisable algorythm will manipulate your VSD's to get a balance between optimal pressures and electricity usage. This unit can handle up to two different VSD's outputs and can deliver either 4-20mA, 0-10V or 0-5V signal. This unit is guaranteed to make a big difference in your electricity usage.


 Online viewing of all parameters (pressures, pumps speeds, valve states) can be logged and viewed on your web dashboard, AgriSense IOS or AgriSense Android app.


Watch the video on the right to see one of these units working: The unit receives pressure values from three separate centre pivots (fed by a single pump) and dynamically manipulates the pump speed to ensure the end section with lowest pressure remains in the optimal zone, 1.5 bar in this case



Basic VSD receiver units:

If you are using a variable speed drive to drive your pump, you are most likely making use of a pressure signal to maintain a constant pressure in your system. Our VSD receiver units receive the pressure signal from the pivot end section and can do one of two things:


This unit will simply relay this signal to your pump and let your VSD manipulate the pump speed to maintain a constant pressure. This unit can handle up to three different pressure signals and their seperate outputs and can deliver either 4-20mA, 0-10V or 0-5V signal.






Pressure signal through radio link:

A very common shortcoming on centre pivots is fluctuations in the end section pressure as the pivot makes its way around the field. Using pressure at the pump


outlet or even at the pivot centre will only be sufficient in controlling pressure in your pivot if your field is perfectly level. This is very often not the case, which may cause ins


ufficient pressure on higher areas and electricity wastage on lower areas. This can potentially cause loss of crop yield and unnecessary payments to your electricity provider.


This challenge can be addressed with our end section pressure transmitter. This unit transmits the current pressure from the end section and can be picked up and used by one or more of our other devices listed below.


In the video to the right we have three pressure transmitters that work in a synchronised fashion. These radio units were eventually fitted onto three separate centre pivots to send pressure values to the VSD that feeds all three.


 Contact us for pricing and customised solutions