Rockwell Automation 22-COMM-P PowerFlex Profibus Adapter - Manual (Page 26)

2-10 Installing the Adapter
6. Depending on the switching frequency of the drive, it is optional to
use the ferrite cable clamp around the communication cables next to
the D-Sub connector, to reduce high frequency emission. See
Figure 2.10 .
Figure 2.10 Optional Clamp-On Ferrite Cable Clamp
To meet the requirements of EN55011 Class A or B, the conditions listed
below must be satisfied.
Notes: 1) For the conditions to satisfy the essential requirements for
CE compliance on PowerFlex drives, see the drive User
Manual.
2) In applications where first environment, unrestricted
distribution is requested (EN55011 group 1, class B), the
installation requires a shielded enclosure. See the PowerFlex
drive User Manual.
Switching Frequency
of PowerFlex Drive EN55011
Class A EN55011 Class B
4 kHz
No ferrite
required
Use one ferrite (Ferrishield part no. HI28B2039 or
Fair-Rite part no. 0443164151)
6 kHz
8 kHz
16 kHz Use three clip ferrites TDK, type ZCAT 3035-1330
Install ferrite core within 10 cm
(4 in.) of Profibus connector.