Technosoft IPS110 Technical Reference page 33

3.2.6.1 Recommendations for Motor Wiring
a) Avoid running the motor wires in parallel with other wires for a distance longer than 2 meters. If
this situation cannot be avoided, use a shielded cable for the motor wires. Connect the cable
shield to the IPS110 GND pin. Leave the other end disconnected.
b) The parasitic capacitance between the motor wires must not bypass 100nF. If very long cables
(hundreds of meters) are used, this condition may not be met. In this case, add series
inductors between the IPS110 outputs and the cable. The inductors must be magnetically
shielded (toroidal, for example), and must be rated for the motor surge current. Typically the
necessary values are around 100 μH.
c) A good shielding can be obtained if the motor wires are running inside a metallic cable guide.
© Technosoft 2007
DC motor connection
J1
GND
Figure 3.8. J2 – DC brushed motor connection
MotionChip
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IPS110
TM
IPS110 Technical Reference