Seite
4
von
10
4.2
Indirect coupling
4.2.1
Flat belt or V-belt
Mount the motor on slide rails in order to adjust belt tension. The belt pulley has to
be fitted hard up the shoulder of the shaft. The pulley center line should be within
the shaft center line.
Use correctly sized belts with a correct profile and in sufficient numbers to drive
without slip and undue tension. Align both pulleys accurately in such a way that the
center of both pulleys are in line.
A belt pulley, which is either too small or too wide, or too high, a tension on the belt
may damage the bearing or cause a shaft break.
In case of doubt, consult the supplier.
4.2.2
Spur gear drives
The motor and the driven machine have to be positioned in such a way that the two
gears align correctly. The motor should then be fixed with dowels.
4.3
Shaft couplings
Remove the corrosion protection from the shaft extension and the coupling
elements. The coupling parts, belt pulleys and gear wheels need to be dynamically
balanced and fit easily on the shaft and to be provided with good fitting keyway.
In the factory the rotor has already been dynamically half-key balanced.
The dimension and the tolerances of the shaft extension and the key are indicated on
the motor dimension sheet. Assembling the coupling elements has to be done with
great care. Careless handling may damage the bearings, shaft or end shields.
Do not file or emery on the shaft to achieve a fit!
When fitting pulleys couplings or bearings, we recommend using heat elements;
therefore the part to be mounted has to be heated till ± 100°C. A large washer and
setscrew can be useful for pushing on pulleys using the tapped hole in the shaft. Only
use proper tools for removing the above mentioned parts e.g. pulley drawers.
5
Electrical connections
5.1
General information
On delivery the motor will rotate clockwise looking at the drive when the phases L1,
L2 and L3 are connected respectively to the connection terminals U1,V1 and W1.
Exchanging of any two-phase lines changes the direction of rotation. When a motor is
