Danfoss VLT 2800 Manual de Serviço descarregar pdf (Página 59)

VLT

2800 Series

Installation

■ EMC-correct electrical installation

General points to be observed to ensure

EMC-correct electrical installation.

- Use only screened/armoured motor cables and

screened/armoured control cables.

- Connect the screen to earth at both ends.

- Avoid installation with twisted screen ends (pigtails),

since this ruins the screening effect at high

frequencies. Use cable clamps instead.

- It is important to ensure good electrical contact from

the installation plate through the installation screws

to the metal cabinet of the frequency converter.

- Use starwashers and galvanically conductive

installation plates.

- Do not use unscreened/unarmoured motor

cables in the installation cabinets.

The illustration below shows EMC-correct electrical

installation, in which the frequency converter has been

fitted in an installation cabinet and connected to a PLC.

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

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Danfoss VLT 2800 Manual de Serviço Página 59