Mounting
5.6 Vibration response
SIMOTICS S-1FT2 synchronous motors for SINAMICS S120
Operating Instructions, 07/2021, A5E50610821B AB
55
Tension measurement
The belt tension must be smaller than the allowable radial forces of the motor.
Figure 5-4
Tension measurement
•
Measure the belt tension at multiple points using a tension meter while turning the motor
shaft by 45°.
•
Try your best to reduce the axial misalignment of the belt-pulleys to keep the axial forces
to the motor shaft to a minimum.
5.6
Vibration response
Vibration severity grade
Motors with a keyway are balanced with a half feather key by the manufacturer.
The vibration response of the system at the location of use is influenced by output elements,
any built-on parts, the alignment, the installation, and external vibrations. This can change
the vibration values of the motor.
The motors conform to vibration severity grade A according to EN 60034-14 (IEC 60034-14).
The specified values refer only to the motor. The conditions at the installation location can
influence the system vibration response and increase the vibration values on the motor.
The vibration severity grade is maintained up to the rated speed (
n
N
).
Figure 5-5
Vibration severity grades
