SiBE28-805 Protection ControlFunction 494.3 Discharge Pipe Protection ControlThis discharge pipe protection control is used to protect the compressor internal temperatureagainst a malfunction or transient increase of discharge pipe temperature.★ Each compressor performs the discharge pipe temperature protection control individuallyin the following sequence.[INV compressor]In discharge pipe temp.protection controlHTdi>115˚CTp>135˚CHTdi : Value of INV compressor discharge pipetemperature (Tdi) compensated withoutdoor air temperatureTp : Value of compressor port temperaturecalculated by Tc and Te, and suctionsuperheated degree.orNormal operationINV upper limit frequency:1-step down from currentcompressor rpsINV upper limit frequency: 1-step upfrom current compressor frequencyCMSQ200A7: 52 HzCMSQ250A7: 62 HzHTdi>115˚CTp>135˚CorHTdi>135˚CHTdi>120˚C for 10 min. or more.orHTdi<110˚CTp<125˚C&After 30 sec.After 20 sec.HTdi>130˚CHTdi>120˚Cfor 90 sec.or more.Tp>130˚CorHTdi<100˚CTp<110˚C&When occurring 3 times within 100 minutes,the malfunction code “F3” is output.Discharge pipetemperature standby (fora period of 10 minutes)
