control unit. See Connection of motor temperature sensor to the drive via an optionmodule (page 81).4. You can connect a sensor to a digital input of the drive via an external thermistor relay.The insulation of the relay of must be rated for the main circuit voltage of the motor.￭ Connection of motor temperature sensor to the drive via an optionmoduleThis table shows:• the option module types that you can use for the motor temperature sensor connection• the insulation or isolation level that each extension module forms between its temperaturesensor connector and other connectors• the temperature sensor types that you can connect to each extension module• the temperature sensor insulation requirement in order to form, together with theinsulation of the extension module, a reinforced insulation between the motor live partsand the drive control unit.Temperature sensor insulationrequirementTemperature sensortypeExtension modulePt100,Pt1000KTYPTCInsulation/IsolationTypeReinforced insulationxx-Galvanic isolation between sensorconnector and other connectors (in-cluding drive control unit connector)FIO-11Reinforced insulation-xxGalvanic isolation between sensorconnector and other connectors (in-cluding drive control unit connector)FEN-xxBasic insulation. Connectors of ex-tension module other than sensorconnector must be left unconnected.xxxBasic insulation between sensorconnector and drive control unitconnector. No insulation betweensensor connector and other I/Oconnectors.FAIO-01No special requirement--xReinforced insulation betweensensor connector and other connect-ors (including drive control unit con-nector).FPTC-xx 1)1) Suitable for use in safety functions (SIL2 / PL c rated).Guidelines for planning the electrical installation 81
