15Frequency inputs6 InstallationInstruction book, IQAN- XT2Frequency inputsConnecting sensors to the frequency inputsFor the frequency ranges and trigger levels, see Appendix A, on page 23.Simple frequency sensorThe positive terminal of the frequency sensor is connected to the +VREF and thenegative terminal to the -VREF respectively. The sensor signal is connected to the FINposition.If the current consumption for the sensor exeeds the maximum load for the VREF, thesensor could be connected to the BAT positions.NOTICEThe negative terminal of the sensor must not be connected to the chassis.Maximum load for each VREF position, see Appendix A, on page 23.EXAMPLEConnect the positive and negative terminals of the frequency sensor to +VREF,position 12, and -VREF, position 13, respectively. Then connect the sensor signal toFIN-A, position 37.Connecting of frequency sensor.ORFrequency sensor-VREF, pos. 13FIN-A, pos. 37+VREF, pos. 12