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In V/F mode drive run more than Rated Speed of Motor

Created by: in212576 at: 1/14/2013 11:25 AM (7 Replies)

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1/14/2013 11:25 AM	Rate (0)
in212576 Posts: 56 Rating: (7)	Dear All, I have a Blower Application.I set the Control Mode P1300 = U/F Control with Parabolic Characterstics.It is working properly without any issue.upto 3000 rpm. Rated Speed of Motor is 2985 Rpm. I want run the motor above the rated speed like 3600 rpm. Is it possible to run the motor on 3600 rpm? Any opinion on same? Regrads Shank..
in212576 Posts: 56 Rating: (7)
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1/14/2013 12:53 PM	Rate (0)
APC Tech Team Posts: 391 Rating: (50)	Shank Dear All, Hello Please check Drive Parameter 2000 and Parameter 322 Motor max Speed settings. I have a Blower Application.I set the Control Mode P1300 = U/F Control with Parabolic Characterstics.It is working properly without any issue.upto 3000 rpm. Rated Speed of Motor is 2985 Rpm. I want run the motor above the rated speed like 3600 rpm. Is it possible to run the motor on 3600 rpm? Any opinion on same? Regrads Shank..
APC Tech Team Posts: 391 Rating: (50)
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1/14/2013 2:08 PM	Rate (0)
Deleted User Posts: 767 Rating: (69)	Hello Shank, Concerning the variable frequency drive, it is possible to operate the motor at higher speeds than rated speed, but need to verify motor and blower are designed by thier manufacturer to operate at the higher speeds. Deputy
Deleted User Posts: 767 Rating: (69)
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1/15/2013 4:41 AM	Rate (0)
in212576 Posts: 56 Rating: (7)	Hello Deputy, For variable frequencydrive,inV/F control mode, voltage and frequency ratio maintaining and incresesing the speed with V/F ratio.we are not changing the voltage as well as frequency in basic motor parameters. Motor rated speed 2980 rpm at 50 Hz.can run upto 3600 rpm. So, how wecan achive the higher speed Regards, Shank
in212576 Posts: 56 Rating: (7)
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1/18/2013 6:12 AM	Rate (0)
pradip_a Posts: 2 Rating: (0)	When u go to constant power mode above basic rated frequency the freq can be set to 60 / 63 hz to achieve 3600 RPM but torque falles inversely
pradip_a Posts: 2 Rating: (0)
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2/7/2013 8:08 AM	Rate (0)
H.J.R Posts: 129 Rating: (0)	how much percentage of speed can increase compare to motor rated speed????
H.J.R Posts: 129 Rating: (0)
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2/7/2013 8:10 AM	Rate (0)
H.J.R Posts: 129 Rating: (0)	what is the difference between V/F, SLVC, TORQUE CONTROL modes with give one example?????
H.J.R Posts: 129 Rating: (0)
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2/7/2013 9:29 AM	Rate (0)
zako_ Gold Member Joined: 5/22/2012 Last visit: 3/24/2022 Posts: 895 Rating: (67)	Hello, see capture 4: http://support.automation.siemens.com/WW/view/de/59737625/0/en general: V/f: for example for pumps and fans Vector control (with or without encoder (SLVC)): If you need a high speed accuracy (with encoder its better - especially for low speeds). Torque control (for example winders which work tension controlled). Zako

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