
A-72937EN/11
To meet the requirement of the EMC Directive
TMN06007E_A-72937EN_11.DOC
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(12) Position coder cable
Use OVERALL SHIELD PAIR WIRE CABLE and connect the
shield to the earthed cabinet close to the inlet.
[With analog spindle input of i series CNC]
A ferrite core is needed at one end of the cable near the NC.
To prevent malfunctions by electrostatic discharge, when the
position coder is installed where operator can touch it in normal
operation, its connector must be grounded. There are two ways to
ground.
1) Take a ground from the screw that fixes the connector.
(Use the screw as the earth terminal.)
2) Use shield of the cable as earth cable.
・ Ground the shield of the cable at NC side.
・ Connect the shield of the cable to Position corder side
with “shield clamp” through the cannon connector housing.
(Refer to 4.3.2(3)2)a) feed back cable.)
Position coder
Position coder
Position coder
NC cabinet (Metallic)
OVERALL SHIELD
PAIR WIRE CABLE
NC
SPDL
HDI/ASP
Inverter
Ferrite core
see sec. 4.2.
Position coder
NC cabinet (Metallic)
OVERALL SHIELD
PAIR WIRE CABLE
NC
SPDL
SPDL AMP
Position-
code
NC