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Tripping with Vdc over voltage. ( F 30002)

7/25/2011 10:23 AM	Rate (0)
Melwyn Posts: 17 Rating: (0)	Hi, we use Sinamics G150, Micromaster MM440, Master drives VC & MC, for our process, the thing is we have noticed ( unrecorded) that when ever there is a power fluctuations ( flickering) for few milli seconds in the line voltage the Sinamics G 150 trips with Vdc over voltage but rest all the drive are running fine. also its noticed that out of 12 Sinamics 9 are tripping & 3 are not tripping, Steps taken: 1) we compared the parameters of the good ones & the tripped ones, result= all are identical. 2)p1290: Vdc controller proportional gain (V/f) / Vdc_ctrl Kp changed from 5.7 to 3 3)p1294 Vdc_max controller automatic detection ON changed fro 0 to 1. 4)p1250 Vdc controller proportional gain / Vdc_ctrl Kp changed from 1 to 2 but still not solved, i would like to know is there any solution for this? can we have a braking resistor to solve this problem?
Melwyn Posts: 17 Rating: (0)
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This contribution was helpful to 1 thankful Users Bnatha

7/26/2011 1:53 PM	Rate (0)
sus Experienced Member Joined: 6/12/2009 Last visit: 10/27/2025 Posts: 75 Rating: (0)	Dear Melwyn, I think you should set P2172. with this paremeter you will increase the overvoltage limit of drive. Susmit

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7/27/2011 6:02 AM	Rate (0)
Melwyn Posts: 17 Rating: (0)	Its not the line over voltage but its Vdc.
Melwyn Posts: 17 Rating: (0)
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3/21/2012 12:03 PM	Rate (0)
Ziemens Gold Member Joined: 3/2/2007 Last visit: 1/9/2026 Posts: 999 Rating: (5)	hy sir, how did you solve this issue? thank you
	... thank you ...
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4/25/2012 6:35 AM	Rate (0)
sparten Posts: 205 Rating: (11)	hi... for which application are you using all these drives???? i just want to know that whetehr your motor is continuose in regneration mode.... if it is so thenvyou can use breaking resistores.....
sparten Posts: 205 Rating: (11)
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4/27/2012 10:57 AM	Rate (0)
Ziemens Gold Member Joined: 3/2/2007 Last visit: 1/9/2026 Posts: 999 Rating: (5)	we are using sinamics s120 with basic line module and braking resistor. the main power supply is 3x400 vac. thanks
	... thank you ...
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