3. Installation
3.4 Preparing the device for operation
3.4.1 Functional earthing XV300
CAUTION
SAFELYDIVERTINGELECTRICALINTERFERENCE
CURRENTS
HMIpanelXV300mustbeconnectedtoacentralearthpointwithacon-
ductorthatisasshortandhasaslowaresistanceaspossible.
l Ground connection characteristics:
Wire cross-sectional area ≧ 1.5 mm², length ≦ 350 mm
TheXV300needstobeconnectedtotheconductivestructurein,e.g.,the
controlpanelusingthecentralearthpoint(earthingscrew).Fortrouble-free
operation,thistypeofgroundingismandatory.
Assemble and terminate the functional earth conductor in advance.
Unscrew the earthing screw on the enclosure.
Put the earthing connection cable's eyelet in position.
Use a torque of 1.3 Nm (11.5 lb-in) to tighten the earthing screw on the enclosure.
Functional earthing specifications
Cross section
≧ 1.5 mm
2
≦ AWG16
Earthing bolt
PZ2, M4 x 8
Ring-cable ferrule for M4
Internal diameter = 4.3 mm
External diameter ≦ 8 mm
Cable length
≦ 350 mm
Tightening moment
1.3 Nm (11.5 lb-in)
Table9:Functionalearthingspecifications
Functional earthing
Figure 21: Screwing the functional earth conductor onto the enclosure
XV30012/15 MN048017 ENwww.eaton.eu
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