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Connection of Analog Inputs in Digital Input terminal I7 and I8 (LOGO)

7/9/2011 5:00 PM	Rate (0)
Srinath Posts: 8 Rating: (0)	How Can I Connect Analog Transmitters in Digital Input of LOGO (I7 and I8)?? Is it possible to connect only 3 wire Transmitters??? (Or) Can I Connect 2 wire Transmitters to that?? Please provide me a solution..
Srinath Posts: 8 Rating: (0)
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7/11/2011 2:33 PM	Rate (0)
Mc Muffin Posts: 495 Rating: (58)	Maybe you find help here... https://support.automation.siemens.com/WW/llisapi.dll/17967360?func=ll&objId=23384630&objAction=csView&nodeid0=14294939&onlyConfigurable=on&lang=en&siteid=csius&aktprim=0&extranet=standard&viewreg=WW&load=treecontent
Mc Muffin Posts: 495 Rating: (58)
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7/11/2011 3:10 PM	Rate (0)
Toeternietoe Platinum Member Joined: 12/27/2006 Last visit: 11/17/2025 Posts: 1200 Rating: (116)	You only can use sensors with a 0 (or 2) to 10 Volt! Most they are 3 wire. Ifv you have a 0( or4) to 20 mA sensor, then you can use them also. Most they are 2 wire. You have to connect a resistor of 500 Ohms between the analoginput of the LOGO! and the - of the powersupply. Connect one wire of the sensor to the (Analog) input of the LOGO!,the same as you have just connect the resistor. The other wire of the sensor must be connected to the + of the powersupply

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This contribution was helpful to 2 thankful Users Sunil Mapilate prozmanic

2/26/2018 10:24 AM	Rate (0)
Jen_Moderator Posts: 8171 Rating: (174)	New question published by Duule is split to a separate thread with the subject Logo oba7 - Need scheme of wiring transmitter and plc and resistor?. Best regards Jen_Moderator
Jen_Moderator Posts: 8171 Rating: (174)
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