FC 300 Design Guide
Introduction to FC 300
If the shield is to be placed on a mounting plate for the adjustable frequency drive, the
mounting plate must be made of metal, because the shield currents must be conveyed b ack
to the unit. Moreover, ensure good ele ctrical contact from the mounting plate through the
mounting screws to the adjustable frequency drive chassis.
NOTE
When non-shielded cables are used, some emission requiremen ts are not complied
with, although the immunity requirements are observed.
In order to reduce the interference level from the entire system (unit + installation), make motor and brake
cables as short as possible. Avoid placing cab les with a sensitive signal level alongside motor and brake
cables. Radio interference higher than 50 MHz (airborne) is especially generated by the control electronics.
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MG.33.B6.22 - VLT is a registered Danfoss trademark
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