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Figure 5-4 Max. permissible vibration velocity, taking into account the vibration displacement and
vibration acceleration
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 domain in a frequency
band of 10 to 2000 Hz.
If excitation in excess of 2000 Hz (e.g. gear tooth meshing frequencies) is to be expected, then
you must adapt the measuring range accordingly. This does not alter the maximum permissible
values.
5.3.4 Aligning to the driven 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 motor with respect to the driven machine:
● The contact surfaces of the motor feet must lie on one plane. Place shims under the motor
feet to position it vertically and to prevent any stress/distortion. The number of shims should
be kept as low as possible, so use as few thicker shims as possible, instead of several
thinner shims.
● Shift the motor to the side on the foundation for horizontal positioning. Pay attention to
maintaining the axial position.
● When positioning the motor, ensure that a uniform axial gap is maintained around the
coupling.
Mounting
5.3 Installing the machine
SIMOTICS M-1PH8 1PH818., 1PH822.
Operating Instructions 07/2016 63
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