Safety instructions 
 
SINAMICS V20 Inverter 
Getting Started, 07/2012, A5E03728127 
11 
Residual risks 
 
CAUTION 
 
The control and drive components of a power drive system (PDS) are approved for 
industrial and commercial use in industrial line supplies. Their use in public line supplies 
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 technical personnel who 
are knowledgeable and observe all of the safety information and instructions on the 
components and in the associated technical user documentation. 
When carrying out a risk assessment of a machine in accordance with the EU Machinery 
Directive, the machine manufacturer must consider the following residual risks associated 
with the control and drive components of a PDS. 
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 
connection technology 
–  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 / cellular phones in the immediate vicinity of the controller 
–  External influences / damage 
2.  Exceptional temperatures as well as emissions of noise, particles, or gas caused by, for 
example: 
–  Component malfunctions 
–  Software errors 
–  Operating and/or ambient conditions not within the scope of the specification 
–  External influences / damage 
3.  Hazardous shock voltages caused by, for example: 
–  Component malfunctions 
–  Influence of electrostatic charging 
–  Induction of voltages in moving motors 
–  Operating and/or ambient conditions not within the scope of the
 specification 
–  Condensation / conductive contamination 
–  External influences / damage 
4.  Electrical, magnetic and electromagnetic fields generated in operation that can pose a 
risk to people with a pacemaker, implants or metal replacement joints, etc. if they are 
too close. 
5.  Release of environmental pollutants or emissions as a result of improper operation of 
the system and/or failure to dispose of components safely and correctly.