Emc Instructions; Emc Conform Installation - KEB Combivert R6-S Instruction Manual

EMC instructions

2.4 EMC instructions
COMBIVERT R6-S represent electrical equipment designed for use in industrial and com-
mercial units.
According to the EMC Directive 2014/30/EU, these devices are components for further pro-
cessing within the meaning of the Directive that are operated by competent machine and
system manufacturers and are not independently operable.
The person installing / operating the machine / unit is obliged to prove the protective meas-
ures demanded by the EMC directive are complied with. The prescribed ratings can usually
be complied with when using the radio interference voltage filters specified by KEB, and
when observing the following measures and installation guidelines.
2.5

EMC conform installation

The COMBIVERT R6 is designed to be used in the second environment as defined in EN
61800-3 (unit with its own supply transformer). Take additional filter measures when using
it in the first environment (residential and commercial area connected to public low-voltage
mains)!
• Install the control cabinet or system in an appropriate and correctly way (see chapter "EMC
conform control cabinet installation")
• To avoid coupled-in noise, separate supply lines, DC lines, motor lines, control and data
lines (low-voltage level < 48 V) and leave a space of at least 15 cm between them when
installing.
• In order to maintain low-resistance high frequency connections, earthing and shielding,
as well as other metallic connections (e.g. mounting plate, installed units) must be in met-
al-to-metal contact with the mounting plate, over as large an area as possible. Make ground
connections with a surface as large as possible (earthing strips).
• Only use shielded cable with copper or tin-plated braid, since steel braid is not suitable for
high frequency ranges. The screen must always be installed on the compensating rail and
fastened with clips or guided through the wall of the housing. Do not elongate the screen
end (pigtails) with individual conductors!
• If external interference suppression filters are used, then these must be installed as close
as possible to (<30 cm from) the interference source and in metal-to-metal contact with the
mounting plate, over as large an area as possible.
• Always equip inductive control elements (contactors, relays etc.) with suppressors such as
varistors, RC-elements or damping diodes.
• All connections must be kept as short as possible and as close as possible to the earth, as
free floating lines work as active and passive aerials.
• Keep connection cables straight (do not bundle). Install a non-assigned wire at one sides to
the protective earth conductor.
• The flow and return circuit must be twisted when the lines are not shielded, in order to
dampen common-mode noise.
• The cable for phase synchronisation between the mains choke and the COMBIVERT R6-S
must not exceed a length of 1 m..
• Further information can be found in the internet, see "www.keb.de".
GB - 14