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Preparing for use
4.9 System-inherent frequencies
4.7
Noise emission
Prevention of hearing damage
If the permissible sound pressure level is exceeded, hearing damage can occur when operating
three-phase motors at their rated power.
The permissible sound pressure level is 70 dB (A).
4.8
Rotational speed limit values
Danger as a result of resonance within certain speed ranges
At over-critical speeds, machines encounter resonance within certain speed ranges. Such
vibrations can reach impermissibly high levels. This can result in death, serious injury or material
damage.
• The controller must ensure that those speed ranges are blocked when the converter is in
operation. Please note the data on the blocked speed ranges specified in the Electrical Data.
• The blocked speed ranges must be run through rapidly.
Machine damage due to excessively high speeds
Excessive rotational speed can lead to serious damage to the machine. This can result in death,
serious injury or material damage.
• Avoid operation above the permissible speed by using the appropriate control function.
• Observe the speeds stamped on the rating plate and in the Electrical Data.
4.9
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.
34
Frame size
132
160
x
mm
30
40
Operating Instructions, 07/2020, A5E46712792A
1FU9
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