05.2003 Instructions for Design of Drives in Conformance with EMC Regulations
Siemens AG 6SE7087-6QX70 (Version AD)
SIMOVERT MASTERDRIVES Compendium Motion Control 3-25
Cable duct
Fig. 3-20 Installation with cable ducts
Installation with cable ducts, mounted on a painted mounting panel. All
of the cables are non-shielded.
Optically this layout looks good.
But from an EMC perspective, this installation is useless!
The motor and signal cables are routed in parallel in the lower cable
duct. The same is true for line supply cables and external power
supplies in the upper cable duct. All of the cables are then routed
together in the vertical cable duct.
Cabling such as this allows noise to be easily propagated and coupled-
in!
Example of
incorrect cable
routing
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