Siemens SINAMICS S120 Combi Manual page 131

Electric shock due to high leakage currents caused by an interrupted external protective
conductor
The drive components conduct a high leakage current via the protective conductor.
Touching conductive parts when the protective conductor is interrupted can result in death
or serious injury.
• Ensure that the external protective conductor satisfies at least one of the following
Electric shock due to unconnected cable shields
Hazardous touch voltages can occur through capacitive cross-coupling due to unconnected
cable shields.
• As a minimum, connect cable shields and the cores of power cables that are not used
Fire through overheating due to insufficient ventilation clearances
Inadequate ventilation clearances can cause overheating with a risk for personnel through
smoke development and fire. This can also result in more downtimes and Line Modules
may have a reduced service life.
• It is absolutely essential that you maintain ventilation clearances according to the table
Electric shock in the event of voltage flashovers at the temperature sensor
Voltage flashovers to the signal electronics can occur in motors without safe electrical
separation of the temperature sensors.
• Only use temperature sensors that fully comply with the specifications of the safety
• If safe electrical separation cannot be guaranteed (e.g. for linear motors or third-party
SINAMICS S120 Combi
Manual, 11/2017, 6SL3097-4AV00-0BP7
WARNING
conditions:
– It has been laid so that it is protected against mechanical damage.
– If it is a single cable, it has a cross-section of at least 10 mm² Cu.
– If it is a conductor of a multi-conductor cable, it has a cross-section of at least 2.5
mm² Cu.
– It has a second protective conductor in parallel with the same cross-section.
– It complies with the local regulations for equipment with increased leakage current.
Cables laid within control cabinets or closed machine housings are considered to be
1)
adequately protected against mechanical damage.
WARNING
(e.g. brake cores) at one end at the grounded housing potential.
WARNING
Ventilation clearances above and below the component (Page 294).
WARNING
isolation.
motors), use a Sensor Module External (SME120 or SME125) or the TM120 Terminal
Module.
Motor Modules Booksize Compact as expansion axes
6.2 Safety instructions for Motor Modules Booksize Compact
1)
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