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CONNECTION OF THE POWER UNIT
4.2.2 Protective earth and function earth
Protective and functional earth must not be connected to the same terminal.
4.2.2.1 Protective earth
The protective earth (PE) serves for electrical safety particularly personal protection in
error case.
CAUTION
Electric shock due to incorrect dimensioning!
► Cross-section wire to ground should be selected according to DIN
IEC 60364-5-54!
Name Function Terminal connection Tightening torque
PE,
Connection for protective earth Screw M4 for crimp connector
1.3 Nm
11 lb inch
Figure 12: Connection for protective earth
4.2.2.2 Functional earthing
A functional earthing may also be necessary, if for EMC requirements additional poten-
tial equalization between devices or parts of the system must be available.
The use of the functional earth (FE) is not required if the frequency inverter is
EMC-technically wired as described in the manual => Before starting.
The functional earth may not be wired green / yellow!
Notes on EMC-compatible installation can be found here.
www.keb.de/leadmin/media/Manuals/emv/0000neb0000.pdf
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