Emc Emission - Danfoss VLT 2811 Quick Manual

VLT 2800 Quick Guide
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
Setup
3 x 480 V version with
1A RFI filter
3 x 480 V version with
1A RFI filter (R5: For
IT mains)
1 x 200 V version with
1A RFI filter
3 x 200 V version with
1A RFI filter (R4: For
use with RCD)
3 x 480 V version with
1A+1B RFI filter
1 x 200 V version with
1A+1B RFI filter
VLT 2880-2882
Setup
3 x 480 V version with
1B RFI filter
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).
Industrial environment
EN 55011 class 1A
Cable-borne
150 kHz- 30 MHz 30 MHz - 1 GHz
Yes
25 m screened/ 25 m screened/
armoured
Yes
5 m screened/ 5 m screened/arm-
armoured
Yes
40 m screened/ 40 m screened/
1.
armoured
Yes
20 m screened/ 20 m screened/
armoured
Yes
50 m screened/ 50 m screened/
armoured
Yes
1. 100 m screened/ 100 m screened/
armoured
Industrial environment
EN 55011 class 1A
Cable-borne
150 kHz- 30 MHz 30 MHz - 1 GHz
Yes
50 m
MG.28.M1.02 - VLT ® is a registered Danfoss trademark
Emission
Residential, commercial and light indus-
EN 55011 class 1B
Radiated Cable-borne
150 kHz - 30 MHz
Yes No
armoured
Yes No
oured
Yes Yes
15 m screened/
armoured armoured
Yes Yes
7 m screened/arm-
armoured oured
Yes Yes
25 m screened/
armoured armoured
Yes Yes
40 m screened/
armoured armoured
Emission
Residential, commerce and light industry
EN 55011 class 1B
Radiated Cable-borne
150 kHz - 30 MHz
Yes Yes
50 m 50 m
1 Quick Guide
try
Radiated
30 MHz - 1 GHz
No
No
No
No
No
No
Radiated
30 MHz - 1 GHz
No
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