Basics for wiring according to EMC
Installation in the control cabinet
5.3
5.3.5
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5.3−4
EDSVF9383V EN 7.1−04/2012
5.3.5 Installation in the control cabinet
ƒ Only use mounting plates with conductive surfaces (zinc−coated or
V2A−steel).
Æ’ Painted mounting plates are not suitable even if the paint is removed
from the contact surfaces.
ƒ If several mounting plates are used, ensure a large−surface connection
between the mounting plates (e.g. by using earthing strips).
Æ’ Connect the controller and the chokes to the grounded mounting plate
with a surface as large as possible.
Æ’ The motor cable is optimally installed if
– it is separated from mains cables and control cables,
– it crosses mains cables and control cables at right angles.
Æ’ Always install cables close to the mounting plate (reference potential),
as freely suspended cables act like aerials.
Æ’ Lead the cables to the terminals in a straight line (avoid tangles of
cables).
Æ’ Use separated cable channels for motor cables and control cables. Do
not mix up different cable types in one cable channel.
Æ’ Minimise coupling capacities and coupling inductances by avoiding
unnecessary cable lengths and reserve loops.
ƒ Short−circuit unused cores to the reference potential.
Æ’ Install the positive and negative wires for DC 24 V close to each other
over the entire length to avoid loops.
Æ’ Connect all components (controller, chokes) to a central earthing point
(PE rail).
ƒ Set up a star−shape earthing system.
ƒ Comply with the corresponding minimum cable cross−sections.
Mounting plate requirements
Mounting of the components
Optimum cable routing
Earth connections
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