Lenze 9300 System Manual page 440

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Information on drive dimensioning
A frequent overvoltage message indicates an incorrect drive dimensioning. This means that the
braking energy is too high.
Remedy:
•
Use supply module 934X or
•
use (additional) brake choppers type 935X
When several controllers are operated simultaneously, an operation as DC bus connection may be
useful.
Here, the generated brake energy of one drive can serve as drive energy for another drive.
The mains connections only supply the energy difference.
EDSVS9332P-D21 EN 3.0
Configuration
7-311