Requirements For The Motor Supply Cables - Siemens SIMOTICS T-1FW6 Configuration Manual

Electrical connection
8.3 System integration
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".
8.3.11

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.
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
up to 70 m power cable length at the rated output current 9 A <
up to 100 m power cable length from a rated output current
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.
NOTICE
Damage to cables
Cables subject to high acceleration rates can wear more quickly. The cables permanently
connected to the motor cannot be replaced if they are damaged.
• Observe the permissible acceleration rates for the cables.
• Do not use a drag chain for the cables permanently attached to the motor.
Also refer to the Chapter "System integration". Data on the motor feeder cables, see Chapter
"Data of the power cable at the stator" and catalog.
MOTION-CONNECT cables from the terminal box provided by the customer or extensions
for the power and signal connection, see catalog.
516
I
≤ 9 A,
n
I
≤ 18 A,
n
I
≥ 30 A
n
1FW6 Built-in torque motors
Configuration Manual, 07/2017, 6SN1197-0AE00-0BP9