Communication / PROFIBUS 09.2008
6SE7087-6QX70 (Version AK) Siemens AG
8.2-56 Compendium Motion Control SIMOVERT MASTERDRIVES
♦ Please avoid differences in potential (e.g. as a result of different
power supply levels) between the converters and the PROFIBUS-DP
master.
♦ Use equipotential bonding cables:
• 16 mm
2
Cu equipotential bonding cables up to 200 m
• 25 mm
2
Cu equipotential bonding cables over 200 m
♦ Route the equipotential bonding cables so that there is the smallest
possible surface between the equipotential bonding cables and signal
cables.
♦ Connect equipotential bonding cables to the ground/protective
conductor through the largest possible surface area.
Instructions for laying cables:
♦ Bus cables (signal cables ) must not be laid close to and parallel to
power cables.
♦ Signal cables and the associated equipotential-bonding cables must
be laid as closely together as possible and kept as short as possible.
♦ Power cables and signal cables must be laid in separate cable ducts.
♦ Shields must be connected through the largest possible surface area.
For more information on electromagnetically compatible installation of
systems, see for example Chapter 3 of the Compendium or the
description "Instructions for Design of Drives in Conformance with EMC
Regulations" (Order No. 6SE7087-6CX87-8CE0).
Potential
equalization
Laying cables
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