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Old April 15th, 2015, 11:52 AM   #1
jay mason
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jay mason is offline
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Question on AB 1762–IF4 Analog input module saturated

Question on AB 1762–IF4 Analog input module
Trying to figure out why I see 40ma when reading the current inline with the analog card.
I have a load cell with a 4 to 20ma signal and the signal conditioner is set up to split the signal as the force is cycled between compression and tension the zero should be 12.0ma and I read 13 ma at zero and when I press the shunt cal on the signal conditioner I should see 19 ma I get 40ma on the meter and 32768 counts on the plc.
I replaced the 1762–IF4 and I still see the same thing.
Any ideas as to what I am missing?
Thank you
Jay Mason
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Old April 15th, 2015, 12:39 PM   #2
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kamenges is offline
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The IF4 is an input device. It won't generate a current. You have two independent devices that would appear to be indicating your actual current is in excess of 20mA. I would look at your signal conditioner.

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Old April 16th, 2015, 10:01 AM   #3

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probably you make wrong measurement
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