Evco EV3 200 WEB - 7.3 Compressor Operation

1143W24E4.00 · EV3 200 Web 03/2021
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Cooling
If the controller receives a cooling request:
• Cooling output (Compressor) between Setpoint + r0 and Setpoint .
When the temperature read by Pb1 reaches the value of Setpoint + r0,thecontrolleractivatesthecompressoroutputuntilthe
temperature goes below the threshold set by Setpoint.
Heating
If the controller receives a heating request:
• Heating output (Heaters) between Setpoint - u7 and Setpoint - u7 + 2°.
When the temperature read by Pb1 reaches the value of Setpoint - u7,thecontrolleractivatestheheateroutputtoproduce
heat until the temperature goes above the threshold set by Setpoint - u7 + 2°.
7.3 COMPRESSOR
The compressor regulator is active in relay output out1 (not configurable).
The switching on/off of the compressor is controlled by:
• Temperature read by probe Pb1;
• Congurationofheatregulation;
• Defrost and dripping.
Conditions for activation
The compressor is activated if the following conditions are met:
• Thecontrollerison(regulationisblockedwhenthecontrollerisinstand-by);
• ProbePb1isworking;
• Compressor activation delay C0 from switch-on is terminated;
• Compressor switch-on delay C2 between 2 consecutive activations;
• If d1=0.2,defrostanddrippingmustbeterminated.
If a delay C0 or C2issetandthereisarequestforcompressoractivation,thecontrollerwaitsforthedelaytoendbefore
activatingthecompressor.Duringthewait,the
iconflashesuntilthecompressorisactivated,afterwhichitstayson.
The compressor regulation configuration parameters are:
Par. Description MU Range
C0 Compressor ON delay from power-on. min 0...240
C2 MinimumcompressorOFFtime. min 0...240
C3 Minimum compressor ON time. s 0...240
C4 CompressorOFFtimeincabinetprobealarm. min 0...240
C5 Compressor ON time in cabinet probe alarm. min 0...240
C6 Condensation temperature above which the condenser overheat alarm sounds. °C/°F 0...199
C7
Condensertemperatureabovewhichthecompressorlockedalarmsounds,onceC8 time has elapsed. °C/°F 0...199
C8
DelayinactivationofcompressorlockedalarmduetothresholdC7 being exceeded. min 0...15
C10 Compressor days for maintenance. days 0...990
C11 Second compressor switch-on delay from first compressor switch-on. s 0...240