Basic Documentation

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Siemens VAV Compact Controller Modbus RTU A6V10631862_en--_e
Smart Infrastructure 2021-10-26
7.3 Notes on EMC optimization
Make sure to separate high-interference cables from equipment susceptible to
interference.
• Cable causing interference: Motor cables, especially motors used with VSDs,
energy cables.
• Cables susceptible to interference: Control cables, low-voltage cables,
interface cables, LAN cables, digital and analog signal cables.
• You can run both types of cable in the same duct, but in different
compartments.
• If ducting with 3 closed sides and a partition is not available, separate the
interference-emitting cables from other cables by a minimum of 150 mm, or
route in separate ducting.
• Cross high-interference cables with equipment susceptible to interference only
at right angles.
• If, in exceptional cases, signal and interference-emitting power cables are run
in parallel, the risk of interference is high. In that case, limit the cable length of
the DC 0...10 V positioning signal line for modulating actuators.
Running cable in a duct
Cable types
Cable segregation