5/25/2012 11:07 PM | |
Joined: 6/4/2008 Last visit: 9/15/2024 Posts: 1497 Rating: (324)
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Hi, with ref to the attached, change the following: P701=99 Change DIN0 to BICO P702=99 Change DIN1 to BICO P719[0]=66 OK P719[1]=3 Select Manual Mode, BICO & Fixed Freq P810=722.1 Source of Mode Changeover = DIN1 P840=722.0 Source of Start Command = DIN0 P1080=??Hz, whatever minimum you set here, drive runs at. I think this should work ok, can't test at the moment . . . Regards, Graeme
AttachmentManual_Auto_Operation.pdf (825 Downloads) |
5/28/2012 3:32 PM | |
Posts: 24 Rating: (2) |
Thanks for the response but it still does not work in local mode |
5/28/2012 5:40 PM | |
Joined: 7/8/2009 Last visit: 8/5/2024 Posts: 1976 Rating: (477)
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Sorry Ayman but I guess you missed something MM420 doesnt have Bico change over for P700 and P1000 as both this parameters have only one index Now regarding parameters,
I think you should have not changed anything in P840 and there is no need to use bico for P701 here is what I suggest P701=1 P702=99 P719[0]=66 P719[1]=3 P810=722.1 P1080= Frequency at which you wantdrive to run
I assume your Local/Remote DI will be enable (high)in Local Mode and if it is reverse, you just need to swap both indice data of P719 Regards, Devesh |
Last edited by: Vithani at: 5/28/2012 5:45 PMLast edited by: Vithani at: 5/28/2012 5:43 PMLast edited by: Vithani at: 5/28/2012 5:43 PMI dont Like people driving Fast, thats the reason I overtake them ;) |
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This contribution was helpful to1 thankful Users |
5/29/2012 10:02 AM | |
Posts: 24 Rating: (2) |
Thanks for response devish but this does not work. It works fine in remote but not in auto. Note, dig ip1 goes high when local is selected. |
5/29/2012 6:28 PM | |
Joined: 7/8/2009 Last visit: 8/5/2024 Posts: 1976 Rating: (477)
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I dont know what is Problem now |
I dont Like people driving Fast, thats the reason I overtake them ;) |
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5/29/2012 10:57 PM | |
Posts: 24 Rating: (2) |
I have checked input status with r722 and all is correct. Note p701=1 p702=99 p703=0 p704=0 |
5/29/2012 11:45 PM | |
Joined: 6/4/2008 Last visit: 9/15/2024 Posts: 1497 Rating: (324)
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Hi Rich, I have tried my configuration and it works perfectly, when my DIGIN1=0, then the PLC has control and I can stop and start from a Step7 VAT table. When I make DIGIN1=1, then the PLC cannot control the drive, and then when I apply 24VDC to DIGIN 0, the drive runs at my target freq (In my case, I set P1080=23Hz). Unfortunately, I need to correct Vithani, when using Local/Remote, then the digital input for the control MUST be BICO See parameter P719=3 (CMD = BICO Parameter) I suspect that you maybe have the wrong setting in P700 (I used P700=2) When you change P700, make sure you confirm the settings of your other inputs. I have attached my test program, so you can at least perform a comparison on Starter of the MM420 parameter sets. Hope this helps . . . Regards, Graeme
AttachmentPLC_MM420.zip (389 Downloads) |
5/30/2012 9:55 AM | |
Posts: 24 Rating: (2) |
Hi Graeme Thanks again for the response. Your configuration almost works. With P700=2 I can control the drive in local with the digital inputs. However when I select remote (digital I/P 1=0), I can not control the drive from Profibus. If I change P700=6 then I can control from Profibus but not locally from the digital inputs (even with I/P 1=1). I have checked the status of the digital inputs with r722 and they are correct i.e Input0=Start Pusbutton (0=Stop, 1=Start) Input1=Local/Remote (0=Remote, 1=Local) |
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