Siemens SINAMICS G180, Инструкция по установке и эксплуатации

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Preparations for use
4.3 EMC
Installation and Operating Instructions SINAMICS G180
76
Operating Instructions, 02/2019, 4BS0751-007
● Twist unshielded wires. This particularly includes analog signals of the same power circuit
i.e. supply and return wires.
Keep the area between supply and return wires as small as possible in order to avoid
unnecessary loop antennas.
● Separate the power cables connected to the inverter input and connected to the inverter
output by spacing them or by using grounded separating plates.
● You may interrupt the shielding of power cables by installing components such as output
contactors, reactors, sine filters, etc. Mount the components on a galvanized sheet. The
sheet simultaneously provides shielding for the incoming and outgoing motor wires.
4.3.2 Examples for correct EMC connection
You can see below some examples of expert connection of shielded cables at compact
units.
If you would also like to apply cable shields with metal cable ties or metal clamps, install
shielding buses for cabinet devices.
Cable entry on a compact device with shield
connection using metallic cable ties
Cable entry of small control lines with shield
on the case and signal lines with shield on the
Sub-D connector
Correct connection for EMC - Variant 1
Correct connection for EMC - Variant 2
①
Line or control connection from approx. 10 mm outside diameter
②
Control cable up to approx. 10 mm outside diameter
③
Signal cable
You can also use EMC threaded connections instead of the metal cable ties. In this case,
remove the sheet metal with the cable tie lugs.