Danfoss VLT 2800 Manual de Serviço descarregar pdf (Página 55)

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 control-

ling unit (use the instructions for the unit in question).

In connection with very long control cables and ana-

logue signals, in rare cases depending on the instal-

lation, 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.

VLT

2800 Series

MG.27.E3.02 - VLT

is a registered Danfoss trademark 55

Installation

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Danfoss VLT 2800 Manual de Serviço Página 55