>>If line filters are used that SIEMENS has not certified for use with SIMODRIVE 6SN11xx/6SLxx, this can result in harmonics being fed back into the line supply. These harmonics can damage/disturb other equipment connected to this line supply.<<
What they are talking about here is that if you do not use Siemens certified filters/reactors, that you can feed harmonics/noise back into the power line and damage/disturb other equipment on the same line. Oftentimes, in the US we ignore this stuff and forget about the line filter/reactor at the input of the drive, but in the EU it is pretty much mandatory that reactors be put on the drive inputs to avoid interference with nearby equipment and other users. Andy or someone else, perhaps Dr. Mark, explained to me that in the UK they have a 380 volt bus system that powers an entire street with one transformer - so an unfiltered drive would thrown noise on everyone's power line on the street. In the US things are quite a bit different. Many of us, and most factories, have our own tranformers so that minimizes the ability for a drive to screw with the neighbors power supply. That is the problem with Siemens manuals, they cram so much stuff in them that is really not relevant to the situation, it can be hard to distinguish what is relevant and what is not. I have some Siemens drive system manuals that are over 1000 pages long - fortunately they are in PDF format otherwise they would look like phone books! If I were to guess, I think that your drive may be sensing phase inbalance and tripping out on a phase loss error. The Elk Grove guys might know a way to get around that situation. Dave On 5/26/2012 7:04 AM, John Thornton wrote: > Could this be part of the issue? chapter 7 harmonics bouncing back from > the caps in the rotary phase converter perhaps? so maybe a filter... > real early here so only partially awake > > John > > When the requirements regarding system fault level are observed and when > using the appropriate line supply filters, the harmonics fed back into > the line > supply lie below the compatibility level of Class 3 of the > electromagnetic environment > of industrial plants and systems according to EN61000–2–4:2002. > When the recommended SIEMENS line filter is used and the EMC mounting/ > installation regulations are complied with, the noise emission limits > according to > EN50081–2 Electromagnetic Compatibility (EMC) – Generic Standard, Noise > Immunity/emission – Part 2: Industrial environments (1993) are complied > with. > Notice > If line filters are used that SIEMENS has not certified for use with > SIMODRIVE > 6SN11xx/6SLxx, this can result in harmonics being fed back into the line > supply. These harmonics can damage/disturb other equipment connected to > this line supply. Certification, e.g. CE is invalid. > Certificates from Siemens are invalid, for example CE , UL. You are > responsible > for generating/obtaining the certificates for this new combination. > It is not permissible to connect additional loads after the line filter > > On 5/25/2012 2:59 PM, andy pugh wrote: > >> On 25 May 2012 20:17, John Thornton<bjt...@gmail.com> wrote: >> >> >>> The infeed unit is a 6SN1145-1BA00-0BA0 >>> >> This looks like the manual. >> http://support.automation.siemens.com/WW/llisapi.dll/csfetch/59401543/PJU_0212_en.pdf?func=cslib.csFetch&nodeid=60683460&forcedownload=true >> >> There is an interesting section about how to connect to various >> earthing styles. Which might be very relevant to your situation and >> the reactor. >> >> >> > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
