64
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
!
Name
Function
Terminal connection
Tightening torque
PE,
Connection for protective earth
Screw M4 for crimp connector
1.3 Nm
11 lb inch
Figure 19:
Connection for protective earth
Incorrect installation of the Pe connection
Only the M4 screws may be used to connect the 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.
Summary of Contents for COMBIVERT 10F6 Series
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