Noise Emission; Voltage And Frequency Fluctuations During Line Operation; Phase Synchronization During Supply System Switching; System-Inherent Frequencies - Siemens SIMOTICS HV C Operating And Installation Instructions

Preparations for use

4.5 Noise emission

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
● 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
● Limit exceptions of this sort with regard to the values that arise, how often, and for how long
● Where possible and within a reasonable time take corrective actions such as reducing the
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
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
● The vibration values according to DIN ISO 10816-3 must not be exceeded.
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from the machine.
impermissibly high temperature rise of the winding. This can result in long-term damage to
the machine.
they occur.
power. In this way you can avoid that the service life of the machine is reduced as a result
of thermal aging.
synchronize the phasing.
way that no system resonances can arise and result in the permissible vibration levels being
exceeded.
SIMOTICS HV C 1NB1402-2AA84-4CA0-Z
Operating Instructions 06/2018