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3.1.5 Changing the EMC protection class from C2 to C4
The EMC protection class of MI1-3 frequency converters can be changed from class
C2 to class C4 (except 115V and 600V drives) by
removing the EMC-capacitor discon-
necting screw
, see figure below.
Note!
Do not attempt to change the EMC level back to class C2. Even if the procedure
above is reversed, the frequency converter will no longer fulfil the EMC require-
ments of class C2!
Figure 3.6: EMC protection class, MI1 - MI3