Preface
1PM6/1PM4 Hollow-Shaft Motors for Main Spindle Drives
10 Configuration Manual, PPMS, 04/2008, 6SN1197-0AD23-0BP0
Residual risks of power drive systems
When carrying out a risk assessment of the 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 power drive system (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
– 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 light, 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.
For more information about residual risks of the power drive system components, see the
relevant chapters in the technical user documentation.
