ecoVALVETRONIC

Expansion valve controller.

Control of the bipolar/unipolar expansion valve.

Overheating/subcooling protection.

ModBus communication and configuration from the regulator menu.

Full protection of the compressor and its system. Signaling valve operation status and alarms.

Module

- Controls the operation of a bipolar / unipolar expansion valve and is designed to maintain constant overheat/subcooling of the refrigerant during compressor operation,
- The controller uses a number of protective algorithms for compressor operation and its system, among others, from the overheating/subcooling of the refrigerant, exceeding the admissible values at the outlet of the evaporator and leakage of the refrigerant.

Configuration of controller and valve parameters from the heat pump regulator menu,
maintenance and control of too low or too high value of overheating/subcooling of the refrigerant based on measurement of pressure and temperature on the evaporator output (quick correction of valve position),
maintenance and control of the evaporator output pressure,
operation via digital input of the bipolar expansion valve (unipolar expansion valve in development),
independent settings of valve operation modes for heating, cooling, defreezing,
limitation of the valve regulation range for each valve operating mode,
function of forced opening of the valve when switching between modes – stabilization mode,
full-step, half-step, quarter-step operation – higher valve resolution and more precise regulation of overheat/subcooling of the refrigerant,
refrigerant leak detection (optional) and full valve closure or any valve position after power failure (standard),
reading the status of digital inputs and electronic detection of the end position of the valve,
hierarchy of protective algorithms and selection of refrigerant,
reading of the second pressure and temperature value and possibility to test the valve motor,
LED indication of controller and valve operation status and additional alarm signaling by the relay,
refrigerant leak detection (optional) and registration of the number of steps performed by the valve and the total duration of alarm conditions for the valve.