Power supply modules
Control terminals
6
257
EDS94SPP101 EN 7.1
Design of the cables
ƒ The cables used must comply with the approvals required for the location (e.g. UL).
ƒ 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.
The following connections need not be shielded:
ƒ 24 V supply
ƒ Digital signals (inputs and outputs)
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