Decentral Solutions
Installation, FCD
300
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Electrical installation, control cables
Control cables must be shielded/armoured. The
screen must be connected to the variable frequency
converter chassis by means of a clamp. Normally,
the screen must also be connected to the chassis of
the controlling unit (use the instructions for the unit
in question). In connection with very long control
cables and analog signals, in rare cases depending
on the installation, 50/60 Hz ground loops may occur
because of noise transmitted from AC line supply
cables. In this connection, it may be necessary to
break the shield and possibly insert a 100 nF capacitor
between the shield and the chassis.
MG.90.F2.22 - VLT is a registered Danfoss trademark
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