Control Specification SiBE041011_A50 Function and Control3.11.1 Fully Closing with Power ONThe electronic expansion valve is initialized when turning on the power. The opening position isset and the pressure equalization is developed.3.11.2 Pressure Equalizing ControlWhen the compressor is stopped, the pressure equalizing control is activated. The electronicexpansion valve opens, and develops the pressure equalization.3.11.3 Opening Limit ControlOutline A maximum and minimum opening of the electronic expansion valve are limited.DetailThe electronic expansion valve is fully closed when cooling operation stops, and is opened at afixed degree during defrosting.3.11.4 Starting Operation ControlThe electronic expansion valve opening is controlled when the operation starts, and preventssuperheating or liquid compression.3.11.5 Control when the Frequency ChangesWhen the target discharge pipe temperature control is active, if the target frequency is changedto a specified value in a certain time period, the target discharge pipe temperature control iscanceled and the target opening of the electronic expansion valve is changed according to theshift.3.11.6 High Discharge Pipe Temperature ControlWhen the compressor is operating, if the discharge pipe temperature exceeds a certain value,the electronic expansion valve opens and the refrigerant runs to the low pressure side. Thisprocedure lowers the discharge pipe temperature.60 class 71 classMaximum opening (pulse) 480 450Minimum opening (pulse) 54 75
