Siemens SINAMICS SM120 Operating Instructions Manual page 15

High auxiliary voltages
High auxiliary voltages are still present even after shutdown. If live parts are touched, this
can result in death or serious physical injury.
Observe the five safety rules when performing any work.
Hazardous arcing
Hazards caused by arcing can occur as result of the following factors, for example:
● The input currents are exceeded
● Incorrectly dimensioned circuit breaker or transformers
● Incorrectly connected cables or cables that have not been connected
● Excessive pollution
Arcing can result in death, serious injury or material damage.
● Make sure that the system is properly dimensioned and that the power cables are correctly
● Remove any excessive pollution.
Live, moving or rotating parts
Contact with the parts mentioned can result in death, serious physical injury or damage to
property.
● Observe the instructions regarding installation and operation.
● Always take protective measures before touching any components.
● Do not remove any necessary covers.
Hot component surfaces
Certain components (e.g. heat sinks and reactors) can become very hot during operation.
These components can remain hot for a long time after operation. Contact can result in serious
injury, such as skin burns.
Do not touch hot components even after you have switched off the drive.
SINAMICS SM120 6SL38715
Operating Instructions 07/2015
WARNING
WARNING
connected. The maximum permissible input currents are listed in the "Technical
specifications".
WARNING
WARNING
Safety instructions
2.3 Safe handling
15