Parker IQAN-XA2 Instruction Book

20Quadrature and directional frequency inputsInstruction book, IQANQuadrature and directional frequency inputsConnecting sensors to the inputsQuadrature sensors are phase dependent. These sensors have two 90 degree out ofphase "square wave" type signals for direction indication, and frequency.Directional sensors are level dependent. These sensors have one "square wave" typesignal for speed or position and one signal that is high or low to indicate the direction.Quadrature and directional inputs can operate in 2 modes. Speed which is frequencywith direction and position which is a pulse count with direction. For the frequencyranges and trigger levels, see Appendix A.Quadrature sensorThe positive terminal of the quadrature sensor is connected to the +VREF and thenegative terminal to the -VREF respectively. The sensor’s channel A is connected toDFIN-A+ and channel B to DFIN-A- positions.Directional frequency sensorThe positive terminal of the directional sensor is connected to the +VREF and thenegative terminal to the -VREF respectively. The sensor output is connected toDFIN-A+ and the sensor direction signal to DFIN-A- position.If the current consumption for the sensor exeeds the maximum load for the VREF, thesensor could be connected to the +BAT/-BAT positions.N OTICEThe negative terminal of the sensor must not be connected to the chassis.Maximum load for VREF position, see Appendix A.EXAMPLEConnect the positive and negative terminals of the sensor to +VREF and -VREFrespectively. Then connect the sensor signals to DFIN-A+ and DFIN-A-.Connecting of quadrature or directional frequency sensor.-VREFDFIN-A-DFIN-A++VREFIQAN moduleQuadrature sensorDirectional sensor-VREFDFIN-A-DFIN-A++VREFIQAN module