EVD evolution, Drive the power easily

By Anonymous -


The EVD evolution series of controllers for electronic valves is the latest step in the development of the famous CAREL drivers for superheat control. Compared to the standard EVD, this instruments adds advanced functions and a new user interface that makes it even easier to use and configure. The new TWIN version can independently control two electronic expansion valves, and represents the ideal solution for two circuit units or different control function (i.e. superheat and hot gas bypass).
A new graphic display and a simple programming procedure allow the controller to be started by selecting just 4 parameters:  

- refrigerant used;
- model of valve;
- type of pressure probe;
- application (chiller, display, cabinet, etc.), selected from the multiple choice menus.

EVD evolution is complete with LEDs for controlling the main functions, and can house a removal LCD display for the configuration and monitoring of all the variable.
EVD evolution can be connected to the pCO series controllers or a PlantVisorPRO supervisor for integrated management of the driver via tLAN, pLAN or RS485/Modbus; it can also operate independently (stand alone) using a digital inputs to switch the device on/off. EVD evolution can work as a simple positioner, using a 4 to 20 mA or 0 to V analogue input signal.
The new EVD evolution series can manage other functions in addition to superheat control, such as hot gas bypass, evaporator pressure control (EPR), and transcritical CO2 circuits. Connected to a pCO series controller EVD Evolution can manage superheat on units fitted with Digital Scroll compressor, using a specific algorithm patented by CAREL and approved by Emerson Climate Technology.

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