Danfoss VLT 6000 HVAC Manual de Serviço descarregar pdf (Página 54)

VLT

6000 HVAC

MG.60.B1.02 - VLT is a registered Danfoss trade mark

■■

■ 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 VLT frequency

converter.

- Use toothed discs and galvanically conductive

installation plates.

- Do not use unscreened/unarmoured motor cables

in the installation cabinets.

The illustration below shows EMC-correct electrical

installation; the VLT frequency converter has been

fitted in an installation cabinet and connected to a

PLC.

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Danfoss VLT 6000 HVAC Manual de Serviço Página 54