Appendix A
Appendix F
EU Directives
F–8
European Union Directives
Due to slightly higher emissions radiated by the DC powered versions of the DL05, and
the differing emissions performance for different DC supply voltages, the following
stipulations must be met.
S The PLC must be housed within a metallic enclosure with a minimum
amount of orifices.
S The communication cable and all I/O cables must pass through suitable
ferrite beads which must be mounted within the enclosure. The I/O
cables can be bundled together and passed through the same ferrite.
Recommended ferrite beads and split cores are detailed below. These were used in
extensive EMC tests and found to successfully attenuate radiated emissions to a
high degree.
For I/O Bundle
Manufacturer Mfg. Part No. OD
mm
ID
mm
L
mm
1 Turn
L/25 MHz
W
1 Turn
L/100 MHz
W
2 Turn
L/25 MHz
W
2 Turn
L/100 MHz
W
RS Online 260–6795 17.5 9.5 28.5 153 210 649 632
Fair–Rite 2643665702 17.5 9.5 28.5 153 210 649 632
Wurth Elektronik 742 700 9 17.5 9.5 28.5 153 210 649 632
For Communication Cable
RS Online 222–4416 26.6 16.6 72 132 301 547
Fair–Rite 0444167281 26.6 10.7 16.6 72 132 301 547
Richco MTFC 231114–T 26.6 10.7 16.6 72 132 301 547
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