Siemens 1NB1402-2AA84-4CA0-Z, Operating And Installation Instructions

Page: 24 / 156

See also
Switching on with the anti-condensation heating active (Page 77)
4.5 Noise emission
Excessive sound pressure levels can lead to hearing impairment or hearing loss.
● When assessing the noise level of the system, make due allowance for the noise emissions
from the machine.
● If necessary, take suitable noise protection measures for personnel.
4.6 Voltage and frequency fluctuations during line operation
Unless stated otherwise on the rating plate, the permissible voltage fluctuation is ±10 % and
the permissible frequency fluctuation is ±2 % in accordance with range B in IEC / EN 60034-1.
Permissible fluctuations that go beyond this are stamped on the rating plate.
Under operating conditions a machine may sometimes have to be operated outside the limits
of range A.
● Exceeding the permissible tolerances for voltage and frequency can lead to an
impermissibly high temperature rise of the winding. This can result in long-term damage to
the machine.
● Limit exceptions of this sort with regard to the values that arise, how often, and for how long
they occur.
● Where possible and within a reasonable time take corrective actions such as reducing the
power. In this way you can avoid that the service life of the machine is reduced as a result
of thermal aging.
4.7 Phase synchronization during supply system switching
Damage to the machine may be caused when switching to another supply system with different
phasing.
● The phasing must be synchronized during switching. Use appropriate means to
synchronize the phasing.
4.8 System-inherent frequencies
Excessively high vibration levels and system resonances can damage the machine set.
● Configure and match the system consisting of the foundation and machine set in such a
way that no system resonances can arise and result in the permissible vibration levels being
exceeded.
● The vibration values according to DIN ISO 10816-3 must not be exceeded.
Preparations for use
4.5 Noise emission
SIMOTICS HV C 1NB1402-2AA84-4CA0-Z
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Operating Instructions 06/2018