Configuration
5.4 Braking resistor (armature short-circuit braking)
1FK2 synchronous motors for SINAMICS S120
Configuration Manual, 06/2019, A5E46927724B AB
59
Destruction of the converter as the armature short-circuit contactor incorrectly switches
Incorrect switching of the armature short-circuiting contactor can erode the contactor
contacts and destroy the converter.
• Program the converter so that pulses are first canceled and this is actually implemented
before an armature short-circuit contactor is closed or opened.
In servo motors with an integrated holding brake, you can produce additional braking torque
with the holding brake.
Note
The holding brake is not a working brake to brake a spinning motor. A limited number of
EMERGENCY STOP operations is permissible.
Additional information is provided in Chapter "
Holding brake (Page 44)".
Note
Braking under normal operating conditions must always be perfor
med via the setpoint input.
For further information, see the configuration manual of the converter.
Figure 5-6 Circuit (schematic) with braking resistors
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