Residual Risks Of Power Drive Systems - Siemens SINAMICS S120 Manual

1.5

Residual risks of power drive systems

The control and drive components of a drive system are approved for industrial and
commercial use in industrial line supplies. Their use in public electrical grids requires a
different configuration and/or additional measures.
These components may only be operated in closed housings or in higher-level control
cabinets with protective covers that are closed, and when all of the protective devices are
used.
These components may only be handled by qualified and trained personnel who are
knowledgeable and observe all of the safety information and instructions on the components
and in the associated technical user documentation.
When assessing the machine's risk in accordance with the respective local regulations (e.g.
EC Machinery Directive), the machine manufacturer must take into account the following
residual risks emanating from the control and drive components of a drive system:
1. Unintentional movements of driven machine components during commissioning,
operation, maintenance, and repairs caused by, for example:
– Hardware defects and/or software errors in the sensors, controllers, actuators and
– Response times of the controller and drive
– Operating and/or ambient conditions not within the scope of the specification
– Condensation / conductive contamination
– Parameterization, programming, cabling, and installation errors
– Use of radio devices / mobile phones in the immediate vicinity of the controller
– External influences / damage
2. In the event of a fault, exceptionally high temperatures, including open fire, as well as
emissions of light, noise, particles, gases, etc. can occur inside and outside the converter,
for example:
– Component malfunctions
– Software errors
– Operating and/or ambient conditions not within the scope of the specification
– External influences / damage
Converters of the Open Type/IP20 degree of protection must be installed in a metal
control cabinet (or protected by another equivalent measure) such that contact with fire
inside and outside the converter is not possible.
Cabinet Modules liquid cooled
Manual, 10/2015, A5E37067587A
connection system
Fundamental safety instructions
1.5 Residual risks of power drive systems
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