Danfoss VLT 2800 Operations Instructions download pdf (Page 14)

Connect all earthing systems to ensure the lowest possible conductor impedance. The lowest

possible conductor impedance is achieved by keeping the conductor as short as possible and by

grounding with the greatest possible surface area. If multiple drives are installed in a cabinet, the

cabinet backplate, which must be made of metal, should be used as a joint earth reference plate.

The drives must be fitted to the backplate at the lowest possible impedance.

To achieve low impedance, connect the drive to the backplate with the drive fastening bolts. The

backplate must be completely free from paint.

1.4.10 EMC emission

The following system results are achieved on a system consisting of a VLT Series 2800 with

screened/armoured control cable, control box with potentiometer, screened/armoured motor ca-

ble and screened/armoured brake cable as well as an LCP2 with cable.

VLT 2803-2875 Emission

Industrial environment Residential, commercial and light indus-

try

EN 55011 class 1A EN 55011 class 1B

Setup Cable-borne

150 kHz- 30 MHz

Radiated

30 MHz - 1 GHz

Cable-borne

150 kHz - 30 MHz

Radiated

30 MHz - 1 GHz

3 x 480 V version with

1A RFI filter

Yes

25 m screened/

armoured

Yes

25 m screened/

armoured

No No

3 x 480 V version with

1A RFI filter (R5: For

IT mains)

Yes

5 m screened/

armoured

Yes

5 m screened/arm-

oured

No No

1 x 200 V version with

1A RFI filter

Yes

40 m screened/

armoured

Yes

40 m screened/

armoured

Yes

15 m screened/

armoured

3 x 200 V version with

1A RFI filter (R4: For

use with RCD)

Yes

20 m screened/

armoured

Yes

20 m screened/

armoured

Yes

7 m screened/arm-

oured

3 x 480 V version with

1A+1B RFI filter

Yes

50 m screened/

armoured

Yes

50 m screened/

armoured

Yes

25 m screened/

armoured

1 x 200 V version with

1A+1B RFI filter

Yes

100 m screened/

armoured

Yes

100 m screened/

armoured

Yes

40 m screened/

armoured

VLT 2880-2882 Emission

Industrial environment Residential, commerce and light industry

EN 55011 class 1A EN 55011 class 1B

Setup Cable-borne

150 kHz- 30 MHz

Radiated

30 MHz - 1 GHz

Cable-borne

150 kHz - 30 MHz

Radiated

30 MHz - 1 GHz

3 x 480 V version with

1B RFI filter

Yes

50 m

Yes

50 m

Yes

50 m

1. For VLT 2822-2840 3 x 200-240 V the same values apply as for the 480 V version with

1A RFI filter.

• EN 55011: Emission

Limits and methods of measurement of radio disturbance characteristics of industrial,

scientific and medical (ISM) high-frequency equipment.

Class 1A:

Equipment used in an industrial environment.

Class 1B:

Equipment used in areas with a public supply network (residential, commerce and light industry).

VLT 2800 Quick Guide 1 Quick Guide

MG.28.M1.02 - VLT

is a registered Danfoss trademark

Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.ctiautomation.net - Email: [email protected]

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