Requirements For The Motor Feeder Cables - Siemens Simotics T-1FW6 Configuration Manual

8.3.12

Requirements for the motor feeder cables

The selected cables must be able to withstand the mechanical forces caused by high
accelerations and speeds. Further, the cables must be suitable for the bending stresses that
occur.
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.
Because of EMC influence occurring on drive systems, we always recommend that shielded
cables are used. See also Chapter "Shielding, grounding, and equipotential bonding
(Page 158)".
You can find information on the motor feeder cables in Chapter "Data of the cable on the
stator (Page 151)" and in the catalog.
You will find MOTION-CONNECT cables from the terminal box provided by the customer or
extensions for the power and signal connection in the catalog.
Permissible power cable lengths
The permissible length of the power cable between the motor and the Motor Module
depends on the rated output current of the Motor Module.
You can find information on the permissible lengths of the motor feeder cables, for example,
in the following Equipment Manuals:
• "SINAMICS S120 Booksize Power Units" in the chapter "Maximum cable lengths"
• "SINAMICS S120 Booksize power units C/D type" in Chapter "Configuring the cable
length"
• "SINAMICS S120 AC Drive" in Chapter "Configuring the cable length"
Permissible signal cable lengths
The permissible signal cable length from the motor to the sensor module depends on the
type of signal cable being used.
Specification of the motor feeder cables
The built-in torque motors are supplied with MOTION-CONNECT cables according to the
catalog from which you can take the technical data:
Power cable: MOTION-CONNECT 800PLUS, Type 6FX8 *)
Signal cable: MOTION-CONNECT 800PLUS, type 6FX8
*) Unlike what is stated in the catalog, the permissible operating temperature on the surface is -20 to +90 °C.
1FW6 external rotor built-in torque motors
Configuration Manual, 12/2020, A5E50516483B AA
Electrical connection
8.3 System integration
159