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Anolg module problems

Created by: Krunoslav at: 2/22/2010 7:30 PM (5 Replies)

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2/22/2010 7:30 PM	Rate (0)
Krunoslav Posts: 3 Rating: (0)	High Forum! I have 1212 DC/DC/RLY CPU, with DQ module and after which is connected 4AI/2AQ module. I have already used the CPU and AI module for testing of functionality. One analog input was used on AI module. Signal attached was 0-10V andevrything worked fine. And now after CPU, DQ and AI/AQ moduleshave been wired to real sistem & configured. All LED's on Analog module are blinking! WTF? I have configured analog modules inputs to current. And this resulted in red blinking LED's. Also, after all inputs have been configured to current, afterwards i can't change Channel 1 and3 neither to voltage nor to current. First 3 inputs are used, last one is empty. Also tried short circuiting the last input but with out resulats. Modules order: CPU; DQ; AI/AQ Thank you!
Krunoslav Posts: 3 Rating: (0)
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2/23/2010 12:18 PM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 11/12/2024 Posts: 4352 Rating: (1452)	Hi, I couldn't understaand 100% your post. However I have some suggestions: 1 - Check the connections. In spetical, load and field devices should have the samepotential (if possible connect the ground to M of your power supply and use the same M to all devices). 2 - Go online and look for diagnostics on the divice. 3 - Divide your "problem" in small place. Unconnect loads until the syste starts to response. After that connect one by one until start the problem. So you will go to a very restrict scenarios: scenario A work, senario B don't work (A and B differ just by one factor).
	Denilson Pegaia Siemens Industry Sector Technical Support
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This contribution was helpful to 1 thankful Users 天下熙熙

3/27/2010 3:49 PM	Rate (0)
E.Santos Posts: 3 Rating: (0)	Hi, I'm having the same problem. When I wire the analoginput (SM 1231)the lights come to red and start blinking. I triyed to conect with either current andvoltage configuration, using both external and S7-1200 onboard power sourcebut with no positive results whatsoever. They keep on blinking as long as the wires are on. Thank you
E.Santos Posts: 3 Rating: (0)
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3/29/2010 12:14 PM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 11/12/2024 Posts: 4352 Rating: (1452)	Hi, my recomendations stays: 1 - Check the connections. In spetical, load and field devices should have the samepotential (if possible connect the ground to M of your power supply and use the same M to all devices). 2 - Go online and look for diagnostics on the divice. In special, pend the "Device Configuration" and go online, look the tab "Diagnostics" when you select the IO module. Look also the diagnostic buffer of the CPU. 3 - Divide your "problem" in small place. Unconnect loads until the syste starts to response. After that connect one by one until start the problem. So you will go to a very restrict scenarios: scenario A work, senario B don't work (A and B differ just by one factor). Tell us what you found.
	Last edited by: Pegaia at: 3/29/2010 12:15 PM Denilson Pegaia Siemens Industry Sector Technical Support
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3/29/2010 3:11 PM	Rate (0)
E.Santos Posts: 3 Rating: (0)	Hi, It does work, i had a missing wire at the connection. For the others that may have the same issue there goes3 advices, 1) Be aware towire the second GNDpin (the one right next to the source pins) 2)Thecatalog wire drawing doesn't show but you have topower the "4-20mA device" line. 3) The current must be controledat the "+" pin Thank you. Eduardo Santos
E.Santos Posts: 3 Rating: (0)	Last edited by: E.Santos at: 4/28/2010 4:13 PM Last edited by: E.Santos at: 3/29/2010 3:11 PM
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12/1/2017 9:19 AM	Rate (0)
Jen_Moderator Diamond Member Joined: 6/19/2017 Last visit: 9/6/2024 Posts: 8175 Rating: (172)	New question published by fiah is split to a separate thread with the subject Anolg module problems - Getting maximum value 32767 for AI1 and AI3. Best regards Jen_Moderator

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