Siemens Sinamics S120 Manual page 41

Risk of fire as a result of overheated motor cables if cross-sections are smaller than the
minimum permissible size
Excessively thin motor cables can result in overheating. This can result in severe injury or
death due to fire and smoke.
• Use cables that correspond to the Motor Module currents. Take into account the routing
• If smaller cross-sections are selected, you must ensure the appropriate level of
Fire hazard due to overheating when the maximum permissible length of power cables is
exceeded
Overheating can result when the total length of the power cables is exceeded. This can
result in severe injury or death due to fire and smoke.
• Ensure that the total length of all power cables (motor supply cable, DC link cable) does
NOTICE
Temperature signal disturbances and failure of components as a result of unshielded or
incorrectly routed cables
With unshielded or incorrectly laid cables, it can be expected that interference will be
coupled into the signal processing electronics from the power side. This can result in
significant disturbances (fault messages) or even failure of individual components
(destruction of the devices).
• Only use shielded cables as temperature sensor cables.
• For temperature sensor cables that are routed together with the motor cable, use only
• Connect the cable shield to the chassis potential at both ends over a large surface area.
Power Units in Booksize C/D-Type Format
Manual, 01/2017, 6SL3097-4AC20-0BP1
WARNING
type, ambient temperature and cable length.
conductor protection in another way, e.g. by suitably setting the control parameters.
WARNING
not exceed the specified permissible length.
cables that are twisted in pairs and shielded separately.
Motor Modules in booksize C/D-type format
3.1 Safety instructions for Motor Modules of C/D-type
41