How to control pressure level with Optidrive E3?

February 8, 2023
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Frequency converters from Invertek Drives are designed to control, regulate and protect electric motors. There are quite a few options for how to regulate the engine speed with a frequency converter, this time we will look at one of the examples.

We will use a single-phase frequency converter Optidrive E3, a 4-20 mA signal generator and a single-phase motor. The video shows how to set additional parameters so that the engine speed can be regulated with a 4-20 mA signal. The most important thing we will cover in this video is the PI control. PI control is useful for systems that need to keep the pressure within a certain range. Such as for water supply, air supply or cooling equipment.

We perform the configuration using the main panel of the frequency converter.

Application of frequency converters Optidrive E3:

  • conveyors, mixers, treadmills;
  • metering, bore and portable pumps;
  • swimming pools, SPAs and fountains;
  • air handling equipment, fans, air curtains and hoods.

Technical parameters:

  • sensorless vector control for all motor types;
  • integrated PI controller;
  • IP20 and IP66 protection;
  • power range from 0.37 – 37kW, 110V – 480V;

The main advantages of Optidrive E3:

  • additional motor protection and energy saving;
  • speed regulation in a selected range;
  • convenient mounting both on a flat surface and on a DIN rail;
  • fast and understandable setting of parameters;
  • available models with IP20 and IP66;
  • it is possible to connect a Bluetooth adapter to perform overclocking with the phone.


If you need other energy-efficient Invertek Drives frequency converters or accessories, contact the specialists of ZTF Lāsma, who will help you find the most suitable and economically advantageous solution. We are here to support!


Other articles and videos about Optidrive E3:

Contact the manager
Mārtiņš Kāns
Mārtiņš Kāns
Project Division Manager
+371 2910 0172