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Quadrature and directional frequency inputs
Instruction book, IQAN
Quadrature and directional frequency inputs
Connecting sensors to the inputs
Quadrature sensors are phase dependent. These sensors have two 90 degree out of
phase "square wave" type signals for direction indication, and frequency.
Directional sensors are level dependent. These sensors have one "square wave" type
signal 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 frequency
with direction and
position
which is a pulse count with direction. For the frequency
ranges and trigger levels, see Appendix A.
Quadrature sensor
The positive terminal of the quadrature sensor is connected to the +VREF and the
negative terminal to the -VREF respectively. The sensor’s channel A is connected to
DFIN-A+ and channel B to DFIN-A- positions.
Directional frequency sensor
The positive terminal of the directional sensor is connected to the +VREF and the
negative terminal to the -VREF respectively. The sensor output is connected to
DFIN-A+ and the sensor direction signal to DFIN-A- position.
If the current consumption for the sensor exeeds the maximum load for the VREF, the
sensor could be connected to the +BAT/-BAT positions.
N
OTICE
The negative terminal of the sensor must not be connected to the chassis.
Maximum load for VREF position, see Appendix A.
EXAMPLE
Connect the positive and negative terminals of the sensor to +VREF and -VREF
respectively. Then connect the sensor signals to DFIN-A+ and DFIN-A-.
Connecting of quadrature or directional frequency sensor.
-VREF
DFIN-A-
DFIN-A+
+VREF
IQAN module
Quadrature sensor
Directional sensor
-VREF
DFIN-A-
DFIN-A+
+VREF
IQAN module
