Safety Information - Siemens SINAMICS S120 Equipment Manual

Line-side power components
4.7 Active Interface Modules Chassis-2
4.7.2

Safety information

Not observing fundamental safety instructions and residual risks
Not observing fundamental safety instructions and residual risks listed in Chapter 1 can
result in accidents with severe injuries or death.
• Comply with the fundamental safety instructions.
• When assessing the risk, take into account remaining risks.
Electric shock due to unconnected cable shields
Hazardous touch voltages can occur through capacitive cross-coupling due to unconnected
cable shields.
• Connect cable shields to a grounded housing potential on both sides.
High leakage currents when the protective conductor in the line feeder cable is interrupted
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
Fire due to inadequate ventilation clearances
Inadequate ventilation clearances can cause overheating of components with subsequent
fire and smoke. This can cause serious injury or even death. This can also result in
increased failures and shorter service lives for devices/systems.
• Observe the cooling clearances above and in front of the component, which are
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WARNING
WARNING
WARNING
conditions:
– It has been installed so that it is protected against mechanical damage.
– For an individual core, 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 from mechanical damage.
WARNING
specified in the dimension drawings.
WARNING
1)
Air-cooled chassis power units
Manual, 07/2019, 6SL3097-4AE00-0BP9