Motor components and options
4.1 Motor components
1FW6 High Speed built-in torque motors
Configuration Manual, 01/2020, 6SN1197-0AE03-0BP3
83
4.1.5
Braking concepts
WARNING
Uncontrolled coast down of the drive as a result of malfunctions
Malfunctions on a rotating machine axes can lead to the drive coasting to a stop in an
uncontrolled manner.
•
Take the appropriate measures to brake the drive with its maximum possible kinetic
energy in the event of a fault.
The design of mechanical braking systems depends on the maximum kinetic energy, that is,
the maximum moment of inertia of the rotating mass and its maximum speed.
Possible malfunctions
Malfunctions can occur e.g. for:
●
Power failure
●
Encoder failure, encoder monitoring responds
●
Higher-level control failure (e.g., NCU); bus failure
●
Control Unit failure
●
Drive fault
●
Faults in the NC
Below are a number of options showing how rotating masses can be braked in the event of a
malfunction.
Braking and emergency stop concepts
In the case of rotating axes that are restricted to a rotation angle of < 360°, damping and
impact absorption elements at the limits of the rotation range offer reliable protection.
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