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Installation according to EMC (installation of a CE−typical drive system)
7.4.2
Motor cable
Only use shielded motor cables with braids made of tinned or nickel−plated copper.
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Shields made of steel braids are not suitable.
– The overlap rate of the braid must be at least 70 % with an overlap angle of 90 °.
The cables used must correspond to the requirements at the location (e.g.
ƒ
EN 60204−1).
Use Lenze system cables.
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Extensively apply the shielding in the plug and attach it in a way which ensures
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electrical conductivity.
The motor cable is optimally installed if
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– it is separated from mains cables and control cables,
– it only crosses mains cables and control cables at right angles,
– it is not interrupted.
If the motor cable must be opened all the same (e.g. due to chokes, contactors, or
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terminals):
– The unshielded cable ends may not be longer than 100 mm (depending on the
cable cross−section).
– Install chokes, contactors, terminals etc. spatially separated from other
components (with a min. distance of 100 mm).
– Install the shield of the motor cable directly before and behind the point of
separation to the mounting plate with a large surface.
Connect the shield with a large surface to PE in the terminal box of the motor at the
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motor housing.
– Metal EMC cable glands at the motor terminal box ensure a large surface
connection of the shield with the motor housing.
EDS84DPS424 EN 5.0
Electrical installation − EMS version
l
7
Motor cable
113
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