9/26/2017 7:38 PM | |
Joined: 12/18/2014 Last visit: 9/20/2024 Posts: 33807 Rating: (4200)
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The analogue input of the LOGO! generally reads a current signal as 0-20 mA (or a voltage signal as 0-10V) and converts it into 1000 units. This results in:
AttachmentLogo overview analog voltage current units.pdf (405 Downloads) |
Last edited by: ixo65 at: 9/26/2017 7:43:21 PM |
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9/28/2017 9:26 AM | |
Joined: 12/18/2014 Last visit: 9/20/2024 Posts: 33807 Rating: (4200)
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If you want to parameterize a 4-20 mA sensor in the analog amplifier, you do not need to calculate anything, this makes the LOGO! Software automaticly. You only have to select the sensor type 4-20 mA for the amplifier, then enter the upper (maximum) and lower (minimum) limits of the measurement range and the number of decimal places. The software then automatically calculates the parameters gain and offset independently. Example: 4-20 mA sensor with a measurement range from -30 bar to 90 bar, displaying with one decimal place. Type of sensor: 4-20 mA The software calculates a gain of 1.5 and an offset of -600. AttachmentTest.zip (287 Downloads) |
Last edited by: ixo65 at: 9/28/2017 9:28:59 AMAttachment |
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9/28/2017 4:59 PM | |
Joined: 12/18/2014 Last visit: 9/20/2024 Posts: 33807 Rating: (4200)
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You could also calculate the gain and the offset itself. Example again the sensor with the data: This would require an extended measuring range for a sensor with 0-20 mA if a measured value of -30 bar is to be displayed at 4 mA.
AttachmentTest_0BA8.Standard.zip (242 Downloads) |
Last edited by: ixo65 at: 9/28/2017 5:24:42 PM |
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This contribution was helpful to1 thankful Users |
9/28/2017 6:48 PM | |
Joined: 2/24/2017 Last visit: 12/9/2022 Posts: 33 Rating: (1) |
very helpful thanks |
This contribution was helpful to1 thankful Users |
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