Technosoft 2022
19
iPOS4803-SY Multi Axis System, EtherCAT Technical Reference
3.7 Motor connections
3.7.1 Brushless Motor connection
Figure 7
Brushless motor connection for iPOS4803-SY
3.7.2 DC Motor connection
Figure 8
DC Motor connection
for iPOS4803-SY
3.7.2.1
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.
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 iPOS4803-
SY Multi Axis System outputs and the cable. The inductors must be magnetically shielded (toroidal, for
example), and must be rated for the motor su
rge 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.
d) The shield must be connected to PE (protective earth) – J2#x pin 4 and it is recommended to be also
connected to the motor chassis.
