
A-72937EN/11
To meet the requirement of the EMC Directive
TMN06007E_A-72937EN_11.DOC
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(6) Spindle motor feedback cable
(between motor and amplifier)
For the spindle motor feedback cable, FANUC recommends a double layered
shield cable. (see (11)servo motor feedback cable.) The amplifier side of the
outer shield should be connected with an earth plate by cable clamp. FANUC
recommends that the motor side of the outer shield is connected to the ground
terminal of the terminal box. The amplifier side of the inner shield should be
connected to 0V of PCB through a pin connector. (As for the pin number for
0V, please refer to the Description of the spindle amplifiers.) The motor side
of the inner shield should be left open. When a metal conduit with braided
shield is used for the connection, it is OK to use conventional overall shield
pair wire cable.
In this case, shield treatment of the braided shield of the conduit should be
done similarly to that of spindle power connection. Grounding of the cable
shield is done not by the cable clamp but by connecting to 0V of the PCB. For
the details, see the Description of spindle amplifier.
(7) AC 200V input power cable for PSM control
Use conventional cabtyre cable. But put ferrite core in PSM side like below.
Power source
Ferrite core
Connector for PSM