Residual Risks During The Operation Of Electric Motors - Siemens SIMOTICS M-1PH8 Commissioning Instructions

1.1.4

Residual risks during the operation of electric motors

The motors may be operated only when all protective equipment is used.
Motors may be handled only by qualified and instructed qualified personnel that knows and
observes all safety instructions for the motors that are explained 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 and/or software errors in the sensors, control system, actuators, and cables
– Response times of the control system and of the drive
– Operation and/or environmental conditions outside the specification
– Condensation/conductive contamination
– Errors during the assembly, installation, programming and parameterization
– Use of wireless devices/mobile phones in the immediate vicinity of the control system
– External influences/damage
2. In case of failure, unusually high temperatures inside and outside the motor, including
open fire as well as the emission of light, noise, particles, gases, etc. can result, for
example in
– Component failure
– Software errors in converter operation
– Operation and/or environmental conditions outside the specification
– External influences/damage
3. Hazardous shock voltages caused by, for example,
– Component failure
– Influence during electrostatic charging
– Induction of voltages in moving motors
– Operation and/or environmental conditions outside 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 noxious substances and emissions in the case of improper operation and/or
improper disposal of components
Commissioning instructions for SIMOTICS M-1PH8 Premium Performance
Commissioning Manual, 10/2014, 610.40106.40
Fundamental safety instructions for the SIMOTICS documentation
and connections
1.1 Fundamental safety instructions
17