Commander SE User Guide
Issue Number 5 27
4.5.4 RFI filter recommendations and data.
Use one RFI filter for each Drive. Filters of appropriate current rating may be shared
between Drives, but small deviations from the stated standards may then occur.
The filter performance depends upon the motor cable length and switching frequency.
The filter performance for the maximum motor cable length is shown in tables 4.3 to
4.10. For further details on filter performance with shorter cable lengths, see the EMC
Data sheets which are available from Control Techniques’ Drive Centres or
Distributors.
High ground leakage current
Most RFI filters have ground leakage current exceeding 3.5mA. All equipment
using these filters must be provided with a permanent fixed ground
connection.
Special low-leakage filters are provided for applications where a permanent ground
connection is not practical.
Table 4.3 Commander SE Size 1
Commander SE Size 2
Table 4.4 Drive Range: SE2D200075 to SE2D200220, single phase
Table 4.5 Drive Range: SE2D200075 to SE2D200220, three phase
Table 4.6 Drive Range: SE23400075 to SE23400400, three phase
WARNING
Motor cable
length
m
Filter and Switching Frequency
Standard
(4200-6102)
Low Cost
(4200-6101)
Low Leakage
(4200-6103)
3kHz 6kHz 12kHz 3kHz 6kHz 12kHz 3kHz 6kHz 12kHz
15
I##
20
RR I
75 I # #
Motor cable
length
m
Filter and Switching Frequency
Standard
(4200-6201)
Low Cost
(4200-6204)
Low Leakage
(4200-6205)
3kHz 6kHz 12kHz 3kHz 6kHz 12kHz 3kHz 6kHz 12kHz
15
II#
50
I##
100 I I I
Motor cable
length
m
Filter and Switching Frequency
Standard
(4200-6202)
Low Cost
(4200-6304)
Low Leakage
(4200-6207)
3kHz 6kHz 12kHz 3kHz 6kHz 12kHz 3kHz 6kHz 12kHz
15
R##
45
I##
100 R R I
Motor cable
length
m
Filter and Switching Frequency
Standard
(4200-6202)
Low Cost
(4200-6304)
Low Leakage
(4200-6207)
3kHz 6kHz 12kHz 3kHz 6kHz 12kHz 3kHz 6kHz 12kHz
15
R##
20
I##
100 I # #
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