37 - PVD 3674_GB_K Series_CE-November 2016.Docx
3.4. Motor mounting recommendations
Warning : The recommendations in this chapter are general. It is the
integrator responsibility to check if it complies with his application and
to chose and define the correct way to integrate the kit according to
his application, all the regulations and standards applicable.
3.4.1. Frame recommendations
Warning : The integrator has the entire responsibility to design and
prepare the housing, the shaft, connection box, the support, the
coupling device, shaft line alignment, and shaft line balancing.
Machine design must be even, sufficiently rigid, precise and shall be dimensioned as
to avoid vibrations due to resonances. Integrator bears the entire responsibility for
choice of the key components, such as bearing, encoder, electric connection and
mechanical parts design.
Warning : A grade A motor (according to IEC 60034-14) well-
balanced, may exhibit large vibrations when installed in-situ arising
from various causes, such as unsuitable foundations, reaction of the
driven motor, current ripple from the power supply, etc.
Vibration may also be caused by driving elements with a natural
oscillation frequency very close to the excitation due to the small
residual unbalance of the rotating masses of the motor.
In such cases, checks should be carried out not only on the machine,
but also on each element of the installation. (See ISO 10816-3).
Warning : A bad setting of the electronic control of the close loop
(gain too high, incorrect filtring …) can occur an instability of the shaft
line, vibration or/and breakdown - . Please consult us
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