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Analog Input SM 331

Created by: mich23 at: 6/24/2010 5:25 AM (6 Replies)

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6/24/2010 5:25 AM	Rate (0)
mich23 Posts: 29 Rating: (0)	Hi experts........ I´m trying to use a SM 331 7KF02-0AB0.....but first my S7-300 (CPU 314) was configured with IM365. Everything works fine....my question is: Where can I put a SM331 ?? with CPU 314 (in the row with the CPU) or with IM 365 (in the row with IM365) ???? Please Help me, Experts.
mich23 Posts: 29 Rating: (0)
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6/24/2010 5:42 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 9/18/2024 Posts: 3021 Rating: (1054)	mich23 Where can I put a SM331 ?? with CPU 314 (in the row with the CPU) or with IM 365 (in the row with IM365) ???? Hello mich23 a SM331 can be put anywhere (e.g. you can put itin the Central rack (CPU rack) or Expansion rack (IM365 or IM360/361 based) or Profibus ET200M I/O station or Profinet ET200M I/O station). I hope this helps Edit: Just to complement Aret's useful advise below, the backplane current consumption of the 331- 7KF02 AI card is 50mA andcan be found in THIS manual. General useful advise about S7 300 Hardware and Installation can be foundin THIS manual (which does state 0.8 Amp as max backplane current consumption for an IM365 based ER and 1.2 Amp max for CR and ER backplane current consumption together if IM365 is used).
	Last edited by: fritz at: 6/24/2010 6:48 AM Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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6/24/2010 6:22 AM	Rate (0)
Aret Posts: 2348 Rating: (264)	Generally i agree - Sm331 can be put anywhere. But please mention (that's often overlooked), that IM365 can transit only currents till 1A - that means you should take care if your power consumption on IM365 rack is lower than 1A.
Aret Posts: 2348 Rating: (264)
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6/24/2010 6:47 AM	Rate (0)
Ayman Elotaify Platinum Expert Joined: 5/28/2008 Last visit: 9/9/2024 Posts: 4515 Rating: (839)	Hello all, Aret Generally i agree - Sm331 can be put anywhere. I agree too. Aret But please mention (that's often overlooked), that IM365 can transit only currents till 1A - that means you should take care if your power consumption on IM365 rack is lower than 1A. From the Module data manual, you will found that current consumption from backplane bus DC 5V, is 100mA max for IM365. You can see it also in CA01 mall. And there is another term. Current shinking is max. 1.2 Aand per module is 0.8A. So I think we should not exceed 800 mA per rack * Please correct me if I am wrong * And for the SM331 module "6ES7 331-7KF02-0AB0", the current consumption from backplane bus DC 5V, is 50mA. For sure you can see this value for all modules you have and sum all of them. Regards.
	Last edited by: Ayman Elotaify at: 6/24/2010 6:52 AM adding more specifications of IM365 Ayman Elotaify
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6/24/2010 6:52 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 9/18/2024 Posts: 3021 Rating: (1054)	Hello Ayman Elotaify I think you confused the current that the IM365 itself consumes with the current that it is capable of supplying to the ER backplane. The former is 100mA, the latter (which Aret quite rightly alerted too) is 800mA.
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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6/24/2010 7:54 AM	Rate (0)
Ayman Elotaify Platinum Expert Joined: 5/28/2008 Last visit: 9/9/2024 Posts: 4515 Rating: (839)	fritz Hello Ayman Elotaify I think you confused the current that the IM365 itself consumes with the current that it is capable of supplying to the ER backplane. The former is 100mA, the latter (which Aret quite rightly alerted too) is 800mA. Hello fritz, What I wanted to say in my previous post that the current consummed by the IM365 is 100mA and it can supply up to 800mA as recommended by Siemens while the max. is 1.2 A. I have edited my previous post few seconds before your answer.
	Ayman Elotaify
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6/25/2010 4:52 AM	Rate (0)
mich23 Posts: 29 Rating: (0)	Thank´s a lot experts......I will let you Know if I need some extra help....... Thank´s a lot...
mich23 Posts: 29 Rating: (0)
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