Operating Instructions – Electronic Motor DRC.-..-SNI
53
5
Cable routing and shielding
Electrical Installation
5.6.3 Notes on cable routing and shielding
Note the following when routing and shielding the cables:
• Cable selection
– Only use cable types prescribed by SEW-EURODRIVE.
– It is essential that you observe chapter "Technical data and dimension sheets /
Specification of recommended connection cables for single line installation" in the
operating instructions.
– Always use metal cable glands due to their attenuation properties.
– Use shielded cables for the optional external braking resistor.
– The shield must have good EMC properties (high shield attenuation) and must not
be used for mechanical protection of the cable.
• Cable shielding – Control cables
– Connect the shields of the control cables to the metal housing of the unit using
the shield clamps of the installation material kit. To do so, strip off the cable
sheath around the shield connection surface.
– As an alternative, you can use optionally available EMC cable glands to connect
the shield of control cables, see chapter "EMC cable glands".
• Cable shield – external braking resistor
– Connect the cable shield of the cable for an external braking resistor to the metal
housing of the unit using the shield clamps of the installation material kit. To do
so, strip off the cable sheath around the shield connection surface.
• Cable shielding – Supply system cable (single line)
– Wind the conductive film included in the installation material kit around the braid
shield three times, if required.
– Connect the cable shields of the supply system cable (single line) to the metal
housing of the unit using the shield clamps of the installation material kit.
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