Siemens SINUMERIK 840D sl Manual page 14

Fundamental safety instructions
1.4 Residual risks of power drive systems
1. Unintentional movements of driven machine components during commissioning, operation,
2. In the event of a fault, exceptionally high temperatures, including an open fire, as well as
3. Hazardous shock voltages caused by, for example,
4. Electrical, magnetic and electromagnetic fields generated in operation that can pose a risk
5. Release of environmental pollutants or emissions as a result of improper operation of the
Note
The components must be protected against conductive contamination (e.g. by installing them
in a control cabinet with degree of protection IP54 according to IEC 60529 or NEMA 12).
Assuming that conductive contamination at the installation site can definitely be excluded, a
lower degree of cabinet protection may be permitted.
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maintenance, and repairs caused by, for example,
– Hardware and/or software errors in the sensors, control system, actuators, and cables
and connections
– Response times of the control system and of the drive
– Operation and/or environmental conditions outside the specification
– Condensation/conductive contamination
– Parameterization, programming, cabling, and installation errors
– Use of wireless devices/mobile phones in the immediate vicinity of the control system
– External influences/damage
emissions of light, noise, particles, gases, etc. can occur inside and outside the inverter,
e.g.:
– Component failure
– Software errors
– Operation and/or environmental conditions outside the specification
– External influences/damage
Inverters 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 inverter is not possible.
– 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
to people with a pacemaker, implants or metal replacement joints, etc., if they are too close
system and/or failure to dispose of components safely and correctly
NCU 7x0.3 PN, NCU 7x0.3B PN
Manual, 06/2014, 6FC5397-1EP40-5BA1