Do I need a braking unit for my ATV930 if I'm connecting a dynamic braking resistor?

Issue:
Is an external braking module required to use a dynamic braking resistor with an ATV930 drive?

Product Line:
Altivar 930

Environment:
Where a DB resistor is needed

Cause:
Does the drive need an additional braking unit?

Resolution:
If your ATV930's part number has a "C" at the end, it does not have an internal braking transistor. It will need an external braking unit installed in order to connect a braking resistor.

For 230V size 6 drives (ATV930D55M3C, ATV930D75M3C) see part number: VW3A7106
https://www.se.com/us/en/product/VW3A7106/braking-unit---60-kw---200-240-v---for-variable-speed-drive/
For 400-460V size 6 drives (ATV930C11N4C, ATV930C13N4C, ATV930C16N4C) see part number: VW3A7105
https://www.se.com/us/en/product/VW3A7105/braking-unit---100-kw---400-480-v---for-variable-speed-drive/
For 400-460V size 7 drives (ATV930C25N4C, ATV930C31N4C) see part number: VW3A7101
https://www.se.com/us/en/product/VW3A7101/resistance-braking-unit---200-kw---400-v---for-variable-speed-drive/

3rd party braking modules may not work with the ATV930 size 7 drives.
Consult your ADM (Area Drives Manager) for assistance if you are considering this.

Note: This information only applies to the ATV900 drive series. Braking units and resistors cannot be installed on the ATV600 drive series drives.

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