Output Coupling; Braking Resistor (Armature Short-Circuit Braking); Description Of Function Braking Resistor - Siemens SIMOTICS S-1FK2 Series Configuration Manual

Configuration

5.3 Output coupling

5.3 Output coupling
NOTICE
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
KTR company.
The advantages of ROTEX
● 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
5.4

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.
NOTICE
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.
58
GS couplings are as follows:
Ⓡ
GS couplings from the
Ⓡ
1FK2 synchronous motors for SINAMICS S120
Configuration Manual, 06/2019, A5E46927724B AB