Electrical connection
8.3 System integration
1FW6 High Speed built-in torque motors
Configuration Manual, 01/2020, 6SN1197-0AE03-0BP3
257
Note
Single-core power cables without protective earth
With 1FW6 built-in torque motors featuring single-core power cables without a PE cable, a
connection point is provided for the PE.
Connect a separate protective conductor cable to this connection point. Pay attention to the
specified cross section for direct connection to the power unit. For data on cross-sections,
refer to the Chapter "Data of the power cable at the stator".
8.3.10
Requirements for the motor supply cables
The cables must be appropriately selected corresponding to the mechanical forces caused
by high rates of acceleration and speeds. Further, they must be suitable for the bending
stresses that occur.
Note
Cables routed further
The cross-sections of the power cables mounted on the motor are dimensioned according to
IEC 60364-5-52, Table B52.12, installation type F/5 for a maximum ambient temperature of
40 °C and a maximum operating temperature of 90 °C.
For cables routed further, consider the ampacity of the cables used and the ambient
conditions.
Permissible motor feeder cable lengths
The permissible length of the power cable between the motor and the infeed unit depends on
the rated power or the rated output current of the infeed unit.
Example, Motor Module, shielded cable:
up to 50 m power cable length at the rated output current
I
n
≤
9 A,
up to 70 m power cable length at the rated output current 9 A <
I
n
≤
18 A,
up to 100 m power cable length from a rated output current
I
n
≥
30 A
The permissible signal cable length from the motor to the Control Unit depends on the type
of signal cable being used.
As a result of EMC effects for drive systems, we always recommend that shielded cables are
used.
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