Siemens Sinamics S120M, Equipment Manual

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2.4 Residual risks of power drive systems
Residual risks of power drive systems
When assessing the machine-related risk in accordance with the respective local regulations
(e.g. EC Machinery Directive), the machine manufacturer or system integrator 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 faults and/or software errors in the sensors, control system, actuators, and
cables and connections
– Response times of the controller and drive
– Operation and/or environmental conditions outside the specifications
– 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
– X-rays, ionizing radiation and cosmic radiation
2. Unusually high temperatures, including open flames, as well as emissions of light, noise,
particles, gases, etc., can occur inside and outside the components under fault conditions
caused by, for example:
– Component malfunctions
– Software errors
– Operation and/or environmental conditions outside the specifications
– External influences/damage
3. Hazardous shock voltages caused by, for example:
– Component malfunctions
– Influence of electrostatic charging
– Induction of voltages in moving motors
– Operation and/or environmental conditions outside the specifications
– 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 and/or
failure to dispose of components safely and correctly
6. Influence of network-connected communication systems, e.g. ripple-control transmitters or
data communication via the network.
Fundamental safety instructions
2.4 Residual risks of power drive systems
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Manual, 06/2019, 6SL3097-5AW00-0BP1