... 3. Modbus/profibus communication PMAC801 motor protectorPMAC801 motor controller relay is used to control the contactor in ... earth fault, underload, external fault. 8 optional protection: Leakage current, Temperature (PTC/NTC), Overvoltage, undervoltage, under power, phase sequence ... , EExe overload (tE), Analog input.Measurement:Current--Ia, Ib, Ic, In, I_unblVoltage--Vab, Vbc, Vca ...