SiUS28-902_a Protection ControlFunction 324.4 Inverter Protection ControlInverter current protection control and inverter fin temperature control are performed to preventtripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase.[Inverter overcurrent protection control][Inverter fin temperature control]Not limitedInverter current >XAInverter currentInverter current ≥ 24.9A>XA•Inverter current ≤ XA•INV. upper limit frequency&•10 sec.•15 sec.•Matching of frequency&• When occurring 3 times within 60 min.,the malfunction code "L8" is output.• When occurring 4 times within 60 min.,the malfunction code "L9" is output.ORLimited INV. upper limit frequency:1-step down from currentcompressor frequencyINV. upper limit frequency:1-step up from currentcompressor frequencyInverter currentstandbyInverter current ≤ XAcontinues for 3 min.Status quoWithout conditionsX13.7Tb≥77˚F12.7Tb<77˚FNot limitedTfin≥179.6˚FTfin≥179.6˚FTfin≥180˚FFin temp. standby•Tfin<174.2˚F•INV. upper limit frequency&• When occurring 3 times within 60 min.,the malfunction code "L4" is output.Limited INV. upper limit frequency:1-step down from currentcompressor frequency•10 sec.•Matching of frequency&Tfin≤174.2˚Fcontinues for 3 min.INV. upper limit frequency:1-step up from currentcompressor frequencyStatus quoWithout conditions•15 sec.OR
