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5
Wiring the device
5.3.2
Design of the cables
Wiring
Design of the cables
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The cables used must comply with the approvals required for the location (e.g. UL).
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It is imperative to comply with the regulations concerning minimum cross-sections
of PE conductors. The cross-section of the PE conductor must be at least as large as
the cross-section of the power connections.
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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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External brake resistor ( Mounting Instructions of the brake resistor)
The following connections need not be shielded:
50
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Mains
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24 V supply
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Digital signals (inputs and outputs)
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EDK94PNE245 DE/EN/FR/ES/IT 1.0