Danfoss VLT 2800 Manuel de service télécharger pdf (Page 66)

VLT

2800 Series

■ Electrical installation, control cables Control cables must be screened/armoured. The

screen must be connected to the 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 analogue signals, in rare cases depending on

the installation, 50/60 Hz earth loops may occur

because of noise transmitted from mains supply

cables. In this connection, it may be necessary

to break the screen and possibly insert a 100 nF

capacitor between the screen and the chassis.

MG.28.A9.02 - VLT is a registered Danfoss trademark

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Danfoss VLT 2800 Manuel de service Page 66