Download iPOS360x - User Manual

3.4.9.4
DC Motor connection
Figure 3.19. DC Motor connection
3.4.9.5
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 iPOS360x GND pin. Leave the other end disconnected.
b) The parasitic capacitance between the motor wires must not bypass 10nF. If very long
cables (tens of meters) are used, this condition may not be met. In this case, add series
inductors between the iPOS360x 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 2011
48
iPOS360x VX Technical Reference