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5 Entries
| 9/29/2007 4:15 AM | |
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Posts: 6 Rating:
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Hi All, This is the first time I have worked with the analogue outputs on the LOGO. I have an analogue input with 4-20mA sensor attached. An analogue amplifier gives me real world values of 0-440. I want to provide a 0-10V output between the amplified values 190-210. ie, 190=0v, 200=5v, 210=10v etc. I have achieved this so far but I think my solution is ugly. Also I have not been able to limit the output numbers between 0-1000, although I don't think this will matter when in operation. Any suggestions appreciated. Thanks, Ant Attachmentec fan control.zip (1174 Downloads) |
Last edited by: Ant_the_fridge at: 29.09.2007 04:16 |
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| 9/29/2007 5:39 PM | |
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Posts: 191 Rating:
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Hi!! please check the attachment, i made a program that i think is what you are looking for. please post any comments. ROSA Attachmentec fan control.zip (1645 Downloads) |
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| 9/30/2007 11:55 PM | |
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Posts: 6 Rating:
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Brilliant. Thanks very much. |
| 10/1/2007 8:24 PM | |
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Posts: 1690 Rating:
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Hello Ant_the_fridge,
AttachmentCalculation_of_GAIN_and_OFFSET_for_analoge_amplifier (LOGO).zip (1190 Downloads) |
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| 10/2/2007 11:35 PM | |
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Posts: 6 Rating:
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Hi All, Thanks for the input. After a couple of sleepless nights, I have realised my idea isn't the solution I was looking for. As it turns out, it was the PI controller that fits the bill. For those who are interested, here is the logic. It will maintain 200Psi by controlling the speed of a cooling fan. Regards, Ant Attachmentec fan control.zip (1254 Downloads) |
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