Lenze i550 - 3-Phase Mains Connection 480 V (0.37-7.5 kW)

Cables
Requirements
•
The c
ables used must correspond to the requirements at the locaon (e. g. EN 60204−1,
UL).
•
The cable cross-secon must be dimensioned for the assigned fusing. Observe naonal and
regional regulaons.
•
Y
ou must observe the regulaons for minimum cross-secons of PE conductors. The cross-
secon of the PE conductor must be at least as large as the cross-secon of the power con-
necons.
Installaon inside the control cabinet
•
Alw
ays install cables close to the mounng plate (reference potenal), as freely suspended
cables act like aerials.
•
Use separated cable channels for motor cables and control cables. Do not mix up dierent
cable types in one cable channel.
•
Lead the cables to the terminals in a straight line (avoid tangles of cables).
•
Minimise coupling capacies and coupling inductances by avoiding unnecessary cable
lengths and reserve loops.
•
Short-circuit unused cores to the reference potenal.
•
Ins
tall the cables of a 24 V DC supply (posive and negave cable) close to each other or
twis
ted over the enre length to avoid loops.
Installaon outside the control cabinet
•
In the case of greater cable lengths, a greater cable distance between the cables is required.
•
In the case of parallel roung (cable trays) of cables with dierent types of signals, the
degree of interference can be minimised by using a metallic cable separator or isolated
cable ducts.
Earthing concept
•
Se
t up the earthing system with a star topology.
•
Connect all components (inverters, lters, chokes) to a central earthing point (PE rail).
•
Comply with the c
orresponding minimum cross-secons of the cables.
•
When using several mounng plates, make a conducve connecon over a large surface
(e. g. using grounding strips).
Project planning
Con
trol cabinet structure
Cables
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