Technosoft 2018
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iPOS4808 VX Technical Reference
3.4.10.5 Sine-Cosine Analog Encoder Connection
Figure 3.24. Sine-Cosine analogue encoder connection
3.4.10.6 Recommendations for wiring
a) Always connect both positive and negative signals when the position sensor is differential
and provides them. Use one twisted pair for each differential group of signals as follows:
A+/Sin+ with A-/Sin-/LH1, B+/Cos+ with B-/Cos-/LH2, Z+ with Z-/LH3. Use another twisted
pair for the 5V supply and GND.
b) Always use shielded cables to avoid capacitive-coupled noise when using single-ended
encoders or Hall sensors with cable lengths over 1 meter. Connect the cable shield to the
GND, at only one end. This point could be either the iPOS4808 (using the GND pin) or the
encoder / motor. Do not connect the shield at both ends.
c) If the iPOS4808 5V supply output is used by another device (like for example an encoder)
and the connection cable is longer than 5 meters, add a decoupling capacitor near the
supplied device, between the +5V and GND lines. The capacitor value can be 1...10 μF,
rated at 6.3V.