9/17/2020 10:50 AM | |
Posts: 531 Rating: (34) |
Might be the when gear ratio is not 1:1. Speed Motor is different from shaft speed?!? |
9/17/2020 7:37 PM | |
Joined: 8/31/2005 Last visit: 8/20/2024 Posts: 2198 Rating: (328) |
The CUD manual (https://support.industry.siemens.com/cs/ww/en/view/109763564) says in the description of r22: "r0022 is identical to r0021, however, it always has units of rpm and contrary to r0021 cannot be changed over." |
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This contribution was helpful to1 thankful Users |
10/7/2020 8:13 AM | |
Joined: 9/30/2016 Last visit: 8/15/2024 Posts: 914 Rating: (6) |
Hi again PISCEAN 2010, Thank you for answering. Please also see the enclosed pics. It is a running machine and it is working OK (we want to see the actual rotation speed in connection with vibration measurements on the shaft while running). I looked at r0021 and r0022 (and r0061) in an online view in the Starter program - and r0021 and r 0022 was always showing the same value and this value seemed to follow the value of r0061 with a small delay. The encoders we use normally are incremental and 1000 pulses per revolution is a probable value. The drive is one of 16 drives (DC and AC) on the machine and they are all controlled by a PLC. Both the encoder and the manual measurements were done on the motor shaft - before any gearbox so the gearbox parameters should have no influence. I did not set any values for this drive - this was done by our automation supplier when the whole machine was commissioned almost 3 years ago - or by them during various modifications since then. I can naturally check the parameters to see if the parameters are correct but - as the machine is functioning as it is - I will need to be very convinced to change any of them. The drive is a Siemens 6RA8091-6DV62-0AA0 but I haven't found the motor details in the documentation so far. My coworker who was here during the renovation of the machine has also told me that they could not find the nameplate of the machine so our automation supplier might have adapted something here to make things work. Again - I would like to understand WHICH parameters that have the effect of changing r0061 from the 1350 - 1370 rpm the shaft is really rotating to the 460 - 470 rpm STARTER is showing me
AttachmentFD 1 RPM.zip (791 Downloads) |
10/7/2020 10:17 AM | |
Joined: 9/30/2016 Last visit: 8/15/2024 Posts: 914 Rating: (6) |
Thank you for answering again PISCEAN 2010, Please look at the attached screenshots too. I would be happy to attach the starter program if I knew how to export the program for that particular drive. In our Simatic Manager the all the drives progamming and the WinCC 7.4 programming is included apart from the PLC logic. How do I export the Starter program for drive one so that I can attach it?
AttachmentFD 1 RPM A.zip (648 Downloads) |
10/7/2020 11:28 AM | |
Joined: 9/30/2016 Last visit: 8/15/2024 Posts: 914 Rating: (6) |
Thank you again for answering. Please also see the attached screenshots. Yes - only one motor is connected to the drive. (Is MDS drive datasets for each motor?) Here are the values for drive1: p50100 1595.0 A p50101 400 V p50102 11.20 A p40103 0.00 A p50104 5000 rpm p50105 0.1 A p50106 5000 rpm p50107 0.1 A p50108 5000 rpm p60109 Could not be found in the expert list? p2000 1500.00 rpm p2001 1000 Vrms p2002 1600.00 Arms p2003 1000.00 Nm
AttachmentFD 1 RPM B.zip (560 Downloads) |
10/9/2020 10:25 AM | |
Joined: 4/23/2010 Last visit: 12/31/2023 Posts: 8092 Rating: (877) |
Hello, Please provide below information. p50083, p50609, p0433, p0432. |
10/9/2020 12:40 PM | |
Joined: 9/30/2016 Last visit: 8/15/2024 Posts: 914 Rating: (6) |
Hi PISCEAN 2010, Thank you for answering. Please also see the attached screenshots
p50083 [2] Incr encoder p50609 0 p0433 "No hits have been found" p0432 "No hits have been found"
AttachmentFD 1 RPM C.zip (592 Downloads) |
10/13/2020 10:48 AM | |
Joined: 4/23/2010 Last visit: 12/31/2023 Posts: 8092 Rating: (877) |
What is value in p922? i.e. telegram type selection in CU & drive? |
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