Vibration Strength - Siemens 1PH813 Operating Instructions Manual

5.4

Vibration strength

The on-site system vibration characteristics depend on factors such as the output elements,
assembly conditions, alignment, installation, and external vibrations and can increase the
level of vibration on the motor.
Under certain circumstances, the rotor may have to be balanced completely with the output
element.
To ensure problem-free operation and a long service life, the vibration values specified to
ISO 10816 must not be exceeded at the defined measuring points on the motor.
Table 5- 2
Vibration frequency
< 6.3 Hz
6.3 - 250 Hz
> 250 Hz
Table 5- 3
Vibration velocity
v
eff
1)
Figure 5-3
To measure the vibration velocity, the measuring equipment must fulfill the requirements of
ISO 2954. The vibration acceleration must be measured as a peak value in the time range in
a frequency band of 10 to 2000 Hz.
Synchronous/induction motors 1PH813
Operating Instructions, 04/2009, 610.48000.22
Max. permissible radial vibration values
Vibration values
Vibration displacement s ≤ 0.16 mm
Vibration velocity v
Vibration acceleration a ≤ 10 m/s2
Max. permissible axial vibration values
= 4.5 mm/s
Both values must be observed simultaneously.
Max. permissible vibration velocity, taking into account the vibration displacement and
vibration acceleration
1)
≤ 4.5 mm/s
eff
1)
Vibration acceleration
a = 2.25 m/s
2
peak
Installation
5.4 Vibration strength
35