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Created by: Do Van Tu at: 3/20/2012 2:44 AM (7 Replies)

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3/20/2012 2:44 AM	Rate (0)
Do Van Tu Posts: 6 Rating: (0)	help me. I have a program that need 8DI, 2AI, 4DO. so what type of logo can I use? LOGO! 12/24RC has 8DI(2AI)/4DO. when i use 2AI as 2 analog inputs, i don't know i have 6DI or 8DI?
Do Van Tu Posts: 6 Rating: (0)
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3/20/2012 7:14 AM	Rate (0)
Marcjan Platinum Member Joined: 4/22/2010 Last visit: 11/18/2024 Posts: 5697 Rating: (715)	Hello, you can use the inputs only once, so if you use 2 inputs as analog you have 6 Di left. You have to extend your Logo with either a analog module or a digital module. What option you choose is depending on your needs. The analog inputs on the base module are 0-10v only if you have other signals you need a anlog extension module. It's good to have some spare i/o for later changes too. Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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3/20/2012 7:34 AM	Rate (0)
Do Van Tu Posts: 6 Rating: (0)	thank Marcjan. maybe i'll extend Logo by a extension module digital.
Do Van Tu Posts: 6 Rating: (0)
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3/20/2012 4:23 PM	Rate (0)
Toeternietoe Platinum Member Joined: 12/27/2006 Last visit: 11/29/2024 Posts: 1197 Rating: (113)	The best you can do is take a LOGO! 12/24RC and use the 8DI and 4DO. Use a extrta extensionunit AM2 for the 2 Ai Note The extensionunnit can be selected fos 0-10 Volt as well for 0 or 4 - 20 mA input. The extensionunit must be powerd seperated by DC power.

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3/21/2012 8:11 AM	Rate (0)
Do Van Tu Posts: 6 Rating: (0)	Help me, can i use an output relay for a DC motor 100V? Attachment output relay.JPG (218 Downloads)
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3/21/2012 9:08 AM	Rate (0)
Marcjan Platinum Member Joined: 4/22/2010 Last visit: 11/18/2024 Posts: 5697 Rating: (715)	Hello, My advice in this case: use external relais to switch the motor, that tiny little relais in the Logo will not have a long lifetime and an external relais is mutch easyer to replace. Regards, Marcjan.
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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3/21/2012 4:14 PM	Rate (0)
Helmut_13 Posts: 2930 Rating: (432)	Hi, in such cases LOGO! contact can be used. Standard contactor in LOGO! design. Available as 24V or 230V units. Ask for 6ED1057-4CA00-0AA0 (24V) or 6ED1057-4EA00-0AA0 (230V). Picture here Hope this helps
Helmut_13 Posts: 2930 Rating: (432)
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3/21/2012 8:06 PM	Rate (0)
Toeternietoe Platinum Member Joined: 12/27/2006 Last visit: 11/29/2024 Posts: 1197 Rating: (113)	Siemens has made an great book with all the details of the LOGO! This huge book is totaly free! https://www.automation.siemens.com/mcms/industrial-automation-systems-simatic/en/manual-overview/tech-doc-controllers/Pages/Default.aspx?HTTPS=REDIR#LOGO!

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