Configuration
5.3 Output coupling
1FK2 synchronous motors for SINAMICS S120
58 Configuration Manual, 06/2019, A5E46927724B AB
Motor damage caused by rotating forces
Output couplings, especially stiff metal bellows-type couplings can exercise rotating forces
on the shaft. These forces can result in bearing motion and in turn damage the motor.
• Rotating forces are not permissible.
To achieve optimum output characteristics, we recommend ROTEX
Ⓡ
GS couplings from the
KTR company.
The advantages of ROTEX
Ⓡ
GS couplings are as follows:
● 2 to 4x torsional stiffness of a belt gearbox
● No teeth meshing (when compared to a belt gearbox)
● Low moment of inertia
● Good closed-loop control response
KTR can provide support when selecting the coupling, see http://www.ktr.com
Braking resistor (armature short-circuit braking)
5.4.1
Description of function braking resistor
The motor cannot be electrically braked if, for converters
● The permissible DC link voltage values are exceeded
● The electronics fails
Then, the motor that is coasting down can only be braked using an armature short circuit.
You can switch the armature short-circuit braking internally via the Motor Module or
externally using a contactor circuit with braking resistors.
Armature short-circuit braking must be initiated at the latest by the limit switch in the
traversing range of the feed axis.
Damage to the drive at the end of the traversing range
To avoid mechanical damage, mount mechanical stops at the end of the absolute
traversing range.
To Next Page
Loading...
Need help?
General
