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6.2.6
Information on cable routing
Cable selection
● Select the connecting cables appropriate for the rated dynamic currents and the plant-
specific conditions, e.g. ambient temperature, routing type.
Note
As a result of the converter operation, high-frequency current and voltage oscillations in
the motor feeder cables can cause electromagnetic interference.
Only use shielded power and signal cables.
● Use shielded cables whose shields have a large-area conductive connection with the
terminal box of the motor via EMC cable glands.
● Use prefabricated cables from Siemens. These cables reduce the installation time and
costs and increase operational reliability.
● Use EMC cable glands for permanently installed entry fittings.
Information on cable routing
● Lay loose connection cables so that the insulation is not damaged.
● Make sure that the minimum bending radii are not exceeded. Minimum radius for fixed
installation: R = 4 x D
(D = outer cable diameter).
● Only remove insulation from the cable ends so that the insulation reaches up to the cable
lug, terminal, or wire end ferrule.
● Use cable lugs or wire end ferrules appropriate for the dimensions of the terminal board
connections and the cable cross-section. If necessary, install parallel connection cables.
● Ensure that the inside of the terminal box or connector is clean and free of cable cuttings
and moisture.
● Tighten all of the screws for the electrical connections (terminal board connections, with
the exception of the terminal strips) to the torque specified by the spindle manufacturer.
● Observe the minimum air clearances for the connection and for the laying of internal
connection cables.
● Avoid protruding cable ends.
● Close the terminal boxes and cable entries in accordance with the configured degree of
protection.
● Ensure that connecting cables cannot rotate, are not subject to strain and pushing force,
and also provide anti-kink protection.
● Plug in or remove the connector only when the system is de-energized.
1FE1 synchronous built-in motors
Hardware Installation Manual, 12/2016, 610.43000.40b
Supply voltage [V]
< 500
500 - 600
6.2 Electrical connection
Minimum air clearance [mm]
4.5
6
Connecting
107
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