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AI with PT100

Created by: jnvr at: 10/12/2019 7:25 PM (4 Replies)

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10/12/2019 7:25 PM	Rate (0)
jnvr Regular Member Joined: 5/7/2018 Last visit: 4/9/2025 Posts: 25 Rating: (0)	Hey. So, i have: 230RCE, 6ED1052-1FB08-0BA0 with two AM2 RTD, 6ED1055-1MD00-OBA2 I have 4pcs PT100 connected to AM2 RTD's inputs. On LOGO! soft comfort, I assume they should be AI's 1-4 ? I'm getting same reading on every AI 1-4 and its 1000. Is this some hardware issue or what could be wrong? Thanks in advance :)

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10/12/2019 7:37 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 1/23/2026 Posts: 36511 Rating: (4553)	The value displayed to you in the AI is just the value of the A/D converter. Every signal of an analog input converts the LOGO! in 0-1000 units. For the AM2 RTD, 0 units mean -50 ° C and 1000 units mean 200 ° C. If 1000 units are displayed for each AI, it indicates that all PT's are not properly connected. 1000 units say that there is either a wire break or a short circuit. Describe: Which PT100 sensors do you use? 2-wire, 3-wire or 4-wire? How did you connect they? Did you supply that AM2 RTD with 24VDC? What color does the RUN / STOP LED show? Red or green?
	Last edited by: ixo65 at: 10/12/2019 19:48:30
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10/12/2019 7:54 PM	Rate (0)
jnvr Regular Member Joined: 5/7/2018 Last visit: 4/9/2025 Posts: 25 Rating: (0)	Just figured out the same thing. Bad wiring... I had and old manual and the loop wire for 2-wire sensor was in the wrong place Thanks for the reply anyway :)

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10/12/2019 7:59 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 1/23/2026 Posts: 36511 Rating: (4553)	Is your problem solved?

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10/12/2019 8:00 PM	Rate (0)
jnvr Regular Member Joined: 5/7/2018 Last visit: 4/9/2025 Posts: 25 Rating: (0)	Yes. Thanks

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This contribution was helpful to 1 thankful Users ixo65

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AI with PT100

Created by: jnvr at: 10/12/2019 7:25 PM (4 Replies)

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AI with PT100

Created by: jnvr at: 10/12/2019 7:25 PM (4 Replies)

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5 Entries

jnvr

ixo65

Last edited by: ixo65 at: 10/12/2019 19:48:30

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jnvr

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jnvr

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