Aligning The Machine - Siemens SIMOTICS M-1PH8 Operating Instructions & Installation Instructions

Assembling

5.5 Aligning the machine

Figure 5-1
To evaluate 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.
If excitation in excess of 2000 Hz (e.g. meshing frequencies) is to be expected, the
measurement range must be adapted accordingly. This does not alter the maximum
permissible values.
5.5 Aligning the machine
Vertical and horizontal alignment
The following measures are required in order to compensate any radial offset at the coupling
and to horizontally adjust the electric motor with respect to the driven load:
● Place shims under the motor feet to position it vertically and to prevent stress/distortion.
● For horizontal positioning, push the motor sideways on the foundation Pay attention to
● When positioning the motor, ensure that a uniform axial gap is maintained around the
50
Max. permissible vibration velocity, taking into account the vibration displacement and
vibration acceleration
The number of shims should be kept as low as possible, so use as few thicker shims as
possible, instead of several thinner shims.
maintaining the axial position.
coupling.
Note
Alignment accuracy
Remember to take account of data concerning the alignment accuracy of the driven load
and the coupling.
Operating Instructions 05/2012 A5E03986435A AA
SIMOTICS M-1PH8