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Sinamics S120 common DC link

7/14/2010 10:19 PM	Rate (0)
Damir Sumina Posts: 13 Rating: (0)	Is it allowed to connect common DC link of two Sinamics S120 power units PM340 6SL3210-1SE13? Control unit is CU310DP.Thanks for your help.
Damir Sumina Posts: 13 Rating: (0)
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7/15/2010 2:11 PM	Rate (0)
Drives_Coach Posts: 133 Rating: (13)	Since S120 is available in both formats stand-alone AC drive and common DC bus you will find no support for connecting the DC bus together of Stand-alone S120 AC drives (PM340). I also do not suggest connecting the DC bus together of any set of stand-alone AC drives especially if they are of different current ratings. Load sharing through the different rectifiers and protection from a short circuit in the motor or inverter are typical issues that are overlooked.
Drives_Coach Posts: 133 Rating: (13)
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7/16/2010 3:00 PM	Rate (0)
Damir Sumina Posts: 13 Rating: (0)	Thanks for your help. Best regards!
Damir Sumina Posts: 13 Rating: (0)
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