TAM 00624
10
DS 100 – 200
03 / 2005
Three-phase synchronous motor, air-cooled
English
2.7 Balancing, drive elements and vibration
The shaft and bearing must not be exposed to knocks.
No axial forces are permitted when mounting or dismounting the output elements.
The generally required measures to prevent contact with the output elements must be
observed.
If the motor is commissioned without the output element, the featherkey must be
secured to ensure that it is not thrown out.
Balancing
In the standard version, the rotors are balanced dynamically with half the featherkey inserted.
(In accordance with DIN EN 60034-14 / ISO 1940)
NOTE:
The balancing method is marked on the shaft end face:
H = Balancing with half featherkey
- standard version
F = Balancing with full featherkey - special version
Output elements:
When assembling the output element, make sure that the correct balancing method is used. The
output elements must be balanced in accordance with ISO 1940.
Suitable devices should always be used to push on or pull off the output elements (e.g. coupler
disk, gear wheel or belt pulley).
•
Use tapped hole at end of shaft.
•
When pulling off, use spacer washer for mechanical protection of shaft.
•
If necessary, heat the output element.
Caution:
•
If the shaft does not have a featherkey, the output elements are fixed to the drive shaft using
appropriate clamping bushes.
•
In the case of shafts with a featherkey, make sure that the output elements lie against
the
shoulder of the shaft
. Note: The chamfer or radius at the output element and the shaft radius
at the shoulder (in accordance with DIN748-E) must be harmonised.
Vibration:
The site vibration response of the system, which is determined by the output elements, the
mounting conditions, the alignment, the installation and the effects of external vibrations,
may cause the vibration values at the motor to increase.
In the interest of reliable motor operation and a long bearing service life, the permitted
vibration values in accordance with EN 60034-14 should not be exceeded. Under certain
circumstances, the rotor may need to be fully balanced with the output element (in
accordance with ISO 140).
The vibration value after assembly must not exceed the permitted rates of acceleration
(comp.
Chap. 2.4
)
In the event of deviations from normal operation – e.g. rise in temperature, noises, vibration
– disable the motor. Identify the cause and, if necessary, contact the manufacturer.
