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9-4
Control Mains Contactor
Without DC Bus Dynamic Brake
Application
Features
Function
• If an uncontrolled running out of the drives cannot damage the
installation.
• If only asynchronous drives are connected to the supply unit.
• If the end positions of the feed axes are sufficiently attenuated.
The DC bus voltage is not short-circuited.
In an emergency stop situation, or if the monitors of the supply unit are
actuated (e.g., power failure), then the drives are shutdown by the drive
electronics as per the set error reaction.
The mains contactor in the supply unit immediately falls off when the
emergency stop sequence is initiated. The drive enable is removed by the
emergency stop relay or by an auxiliary contact of the mains contactor.
The drives are shutdown depending on the set error reaction.
Machine damages due to brakeless slowing
down of the drives in the event of faulty drive
electronics!
⇒ Use motors with mechanical brakes (a holding brake
CAUTION
must not be used as operating brake).
⇒ End positions of feed axes must be sufficiently
attenuated.
Rexroth IndraDrive
DOK-INDRV*-HMV-*******-PR01-EN-P
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