Lenze E70AC Series, Руководство по оборудованию

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Electrical installation
Installation according to EMC (installation of a CE−typical drive system)
Shielding
6
l
93
EDS700ACBA EN 5.1
6.3 Installation according to EMC (installation of a CE−typical drive system)
Design of the cables
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The cross−section of the PE conductor must be dimensioned according to the
relevant national regulations.
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The cables used must comply with the approvals required for the location (e.g. UL).
6.3.1 Shielding
Requirements
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The effectiveness of a shielded cable is reached by:
– Providing a good shield connection through large−surface shield contact.
– Using only braided shields with low shield resistance made of tin−plated or
nickel−plated copper braid.
– Using braided shields with an overlap rate > 70 % and an overlap angle of 90 °.
– Keeping unshielded cable ends as short as possible.
Use system cables or shielded cables for these connections:
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Motor
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Feedback systems
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Motor holding brake (shielding is required when being integrated into the motor
cable; connection to optional motor brake control)
The following connections need not be shielded:
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24 V supply
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Digital signals (inputs and outputs)
Connection system
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Connect the shield with a large surface and fix it with metal cable binders or a
conductive clamp. (
¶
11.9)
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Connect the shield directly to the corresponding device shield sheet.
– If required, additionally connect the shield to the conductive and earthed
mounting plate in the control cabinet.
– If required, additionally connect the shield to the cable clamp rail.