Speed Controllers and Inverters

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To complete its range of products, Carel offers a series of modules suitable to satisfy different particular applications of HVAC/R units, for fan, pump and compressor speed control.
In fact optional modules are available and have been specially designed, and therefore optimised, for increasingly important functions in today's air conditioning and refrigeration units.
For what concerns condensing pressure control, there is a wide range of controllers available, allowing the possibility to be used in stand-alone configuration or connected to a controller in the pCO sistema range. 
This range of controllers is available for all requirements: single and three-phase version.
Regarding parametric controllers, such as the microchiller range, Carel offers a range of controllers with single phase power supply in the MCHRTF range. This speed controllers are also compatible with programmable pCO sistema controllers. They can manage single phase 230 Vac fans with 8, 10 and 12 A current.
The inverter represents one of the stat-of-the-art solutions regarding energy saving. The Carel inverter offer can boast two product families: The VFD NXL range, suitable for driving fans, pumps and compressors fitted with asynchronous three phase motors and the innovative power+, that can control BLD/BLAC brushless motors with permanent magnets, which are used in the new generation compressors.
The range of VFD, NXL series variable frequency drives, is developed specifically for applications with:
  • variable flow rate on air handling unit fans;
  • modulation of compressor speed;
  • variable flow rate on system supply pumps and evaporator pumps on the chillers;
  • control of condensing pressures on ventilation units.
The use of inverters with electronic motors applied on the water pumps or on fans allow modulation of load and accurate and efficient process control from an energy point of view.


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