Skip to Content

Register Login

Industry Online Support

Technical Forum

Navigation

Soft Starter Profibus

Created by: mdedem at: 12/12/2007 9:01 AM (4 Replies)

Rating (0)

Thanks 0

5 Entries

12/12/2007 9:01 AM	Rate (0)
mdedem Advanced Member Joined: 1/24/2007 Last visit: 7/16/2024 Posts: 5 Rating: (0)	Hi, Ican control Soft Starter using PCS7via Profibus (Start,Stop,Reset etc.). I want to read measuredcurrent information from Soft Starter. How can I do in PCS7 ?

Suggestion To thank Quote Answer

12/12/2007 11:18 AM	Rate (0)
dchartier Grandmaster Joined: 9/27/2006 Last visit: 1/25/2025 Posts: 12330 Rating: (2702)	Hello mdedem; Which softstarter model? From which manufacturer? In our projects, we control and monitor MV softstarters from Allen-Bradley, Benshaw and Aucom over Profibus-DP. We use indifferently any Profibus-DP master (we have different brands of controllers in our different projects). What you need basically is a Profibus-DP slave interface card on the softstarter, a gsd file (object description file for Profibus-DP slave) from the manufacturer that you need to integrate to the Profibus configuration software you use (HWConfig in the case of PCS7) and a manualillustrating the exchage data table between the slave and the master; it should explain what number of words are transfered in and out of the slave, and the content of each word. Once you have all these, open your HWConfig, locate the softstarter in the Profibus slave objects, drag it to the Profibus Master bus, insert the correct number of modules required to match your communication needs, memorize the I/O addresses provided by the configurator as you will access the data through these. Then program some rungs in any SFC or FB to read/write to these I/O addresses. In short, just treat your softstarter as any normal Profibus slave. Hope this helps, Daniel Chartier
	Last edited by: dchartier at: 12.12.2007 11:19
Suggestion To thank Quote Answer

12/12/2007 11:30 AM	Rate (0)
mdedem Advanced Member Joined: 1/24/2007 Last visit: 7/16/2024 Posts: 5 Rating: (0)	Hi dchartier, 3RW44356BC44 soft starter75 kw 3RW4900 0KC00 communication module I located gsd file inHW and its have 2 byte input and 2 bytes output control bytes. I can use these bytes for control Soft starter. I want to read current information. I think it's not possible with 2 bytes. How can I do ?

Suggestion To thank Quote Answer

12/12/2007 12:28 PM	Rate (0)
dchartier Grandmaster Joined: 9/27/2006 Last visit: 1/25/2025 Posts: 12330 Rating: (2702)	Hello mdedem; I have looked at the Simoreg System manual, and it indicates that the first six bits of the second byte of the Input area are used to indicate the % value of the parametrized maximum current on the drive. I have copied some of their tables in the following attachment (simplified them a bit) so you can see where they are located in the data table and how they are used to calculate the % value. Here is a link to the mentionned manual: http://support.automation.siemens.com/WW/view/en/21772518 Now this is not something I have tried myself before, so try it out and see if it is effective. The same chapter indicates that you can also use SFCs for data-record reading (DPV1 functions) to get the current readings from the drive,. so that could be another alternative. Hope this helps, Daniel Chartier Attachment Simoreg_PB.jpg (474 Downloads)
	Last edited by: O_Moderator at: 9/16/2010 3:09 PM link edited Last edited by: dchartier at: 12.12.2007 12:32
Suggestion To thank Quote Answer

12/12/2007 12:40 PM	Rate (0)
mdedem Advanced Member Joined: 1/24/2007 Last visit: 7/16/2024 Posts: 5 Rating: (0)	Hello dchartier, Thanks a lot for your help. Best regards

Suggestion To thank Quote Answer

|

Share this page:

Share this page on...

Follow us on