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S120 and reference speed

Created by: Goran_ at: 5/24/2011 4:06 PM (7 Replies)

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5/24/2011 4:06 PM	Rate (0)
Goran_ Posts: 141 Rating: (0)	I see many parameters in S120 that could reffer to maximum required speed (not the rated motor speed). What exactly is the parameter to get faster motor speed that declared? In Configuration for motor module, I see reference parameters, but tis is probably just for visualization purpose, it doesnt change anything. And do I need to execute some kind of tunning procedure after I change this parameter(s)?
Goran_ Posts: 141 Rating: (0)
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5/30/2011 8:17 AM	Rate (0)
Pranab Posts: 63 Rating: (1)	Goran_ I see many parameters in S120 that could reffer to maximum required speed (not the rated motor speed). What exactly is the parameter to get faster motor speed that declared? In Configuration for motor module, I see reference parameters, but tis is probably just for visualization purpose, it doesnt change anything. And do I need to execute some kind of tunning procedure after I change this parameter(s)? Hello, Parameter P0311 is for define motor rated speed. Parameter P1960 is used for speed optimization. Regards Pranab Attachment Rated speed.GIF (928 Downloads)
Pranab Posts: 63 Rating: (1)
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5/30/2011 12:19 PM	Rate (1)
Anchobi Posts: 139 Rating: (25)	Hi goran I am going to bed now but want to try to set you on the right path. p322 is the max motor speed. after setting this parameter you should then set p340=1 to do an auto calculation once more. P322 should also be known as the maximum rated motor speed (different from the rated motor speed p311.) p311 is the speed the motor will operate when you give it the rated frequency (50/60Hz) However for many motors this may also be the maximum rated speed. But some motors are rated to up to 200% (100Hz say) so you will need to checkwith the manufacuturer how fast you can spin your motor. As far as setting paramters start with p322. Please look it up in the manual, then look up p1082 and then look up the function diagram in the list manual -3050- anyway ill stay tuned somtime tomorrow for any questions. (although there are plenty of eager beavers around that will answer your questions)
Anchobi Posts: 139 Rating: (25)
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5/30/2011 9:13 PM	Rate (0)
Goran_ Posts: 141 Rating: (0)	Pranab Goran_ I see many parameters in S120 that could reffer to maximum required speed (not the rated motor speed). What exactly is the parameter to get faster motor speed that declared? In Configuration for motor module, I see reference parameters, but tis is probably just for visualization purpose, it doesnt change anything. And do I need to execute some kind of tunning procedure after I change this parameter(s)? Hello, Parameter P0311 is for define motor rated speed. Parameter P1960 is used for speed optimization. Regards Pranab Hello, Pranab, thanks for the resposne. I think you didnt understnand my intention. Sometimes we need motor to run faster than motor rated speed (P311), If motor can handle faster speeds. I used to work with masterdrives, and with them it was quite simple: you set one parameter and dont need to do any calculations after. Now, with sinamics, there are many parameters that could affect maximum motor speed (P322, P1082, P2000, etc). And I am not sure why they all exist
Goran_ Posts: 141 Rating: (0)
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5/30/2011 9:21 PM	Rate (0)
Goran_ Posts: 141 Rating: (0)	Anchobi Hi goran I am going to bed now but want to try to set you on the right path. p322 is the max motor speed. after setting this parameter you should then set p340=1 to do an auto calculation once more. P322 should also be known as the maximum rated motor speed (different from the rated motor speed p311.) p311 is the speed the motor will operate when you give it the rated frequency (50/60Hz) However for many motors this may also be the maximum rated speed. But some motors are rated to up to 200% (100Hz say) so you will need to checkwith the manufacuturer how fast you can spin your motor. As far as setting paramters start with p322. Please look it up in the manual, then look up p1082 and then look up the function diagram in the list manual -3050- anyway ill stay tuned somtime tomorrow for any questions. (although there are plenty of eager beavers around that will answer your questions) Hi, Anchobi, thanks for the response. This is what confuses me: why do we need both P322 and P1082? I have parameter list where P322=0 and P1082=xxx rpm. And in another list P322=P1082=xxx rpm. And when I set both of them to same value, and then try to run the motor at maximum speed, I get drive overspeed fault. And the only way I could get away with it is to scale with P2000, but then again, if I scale, this means I cannot get to full speed... Is there some quick parameterization manual,. than will show how to parameterize sinamics drive with induction motor. I am not interested in communication, only in motor data (rated data, required data, speed controller). In what procedure do we need to remove gearbox, where we need to run with load, etc... Or, if I am asking too much, then at least clarification with maximum motor speed is welcomed. Thanks, Goran
Goran_ Posts: 141 Rating: (0)
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5/30/2011 10:51 PM	Rate (0)
Anchobi Posts: 139 Rating: (25)	With the overspeed fault you may need to set the maximum speed p1082 higher than the motor rated maximum P322. Also check the hystersis value p2162 as this plus p1082 will be the trip point for the fault. also check r1084 as this will show you the effective maximum. here is the link to the commissioning manual http://support.automation.siemens.com/WW/view/en/49084703 here is the getting started manual http://support.automation.siemens.com/WW/view/en/42905308 Here is a link to where you can find all the latest S120 manuals. I suggest you look at the function manual and look up drive identification. http://support.automation.siemens.com/WW/view/en/21901735/133300
Anchobi Posts: 139 Rating: (25)
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6/1/2011 9:20 PM	Rate (0)
Goran_ Posts: 141 Rating: (0)	Anchobi With the overspeed fault you may need to set the maximum speed p1082 higher than the motor rated maximum P322. Also check the hystersis value p2162 as this plus p1082 will be the trip point for the fault. also check r1084 as this will show you the effective maximum. here is the link to the commissioning manual http://support.automation.siemens.com/WW/view/en/49084703 here is the getting started manual http://support.automation.siemens.com/WW/view/en/42905308 Here is a link to where you can find all the latest S120 manuals. I suggest you look at the function manual and look up drive identification. http://support.automation.siemens.com/WW/view/en/21901735/133300 Hi, Anchobi, I was on the trip, so I couldnt not responde. At the mommet I dont have access to drives, so I will speak from the memory. I have most of those manuals. The problem with increasing the P0182, is that it can be <=P322, so I need also to increase P322, and this leads to motor identification procedure. With masterdrives, when I do motor identification, I need to uncouple the motor. Is this the case with S120 also? If yes, then a lot of work for increasing the maximum speed of the motor, where with masterdrives I would only need to change P353 (I f I remember well), and nothing else. :( As for the P2162, I was also looking at this parameter (looking at the help for fault), and according to manual, its value can be For p0322 = 0, p2162 <= 0.1 * p0311 For p0322 > 0, p2162 <= 1.02 * p0322 - p1082 In my case, it cannot be more than 38rpm (max rpm=1900), r1084=1900 Thanks, Goran
Goran_ Posts: 141 Rating: (0)
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6/6/2011 9:41 AM	Rate (0)
viralpatel Silver Member Joined: 11/18/2010 Last visit: 8/5/2022 Posts: 523 Rating: (32)	hi, p1082 is a parameter which indicate your motor speed cannot exceed that limit. p2000 is a parameter which indicate reference speed means 10v = p2000(RPM) viral patel

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