On a GRV-IMAI-8 (for instance), if the module scaling is configured for 4-20mA = 0-100% and the signal into the module is 21 mA, will PAC Control read 100% or 106.25%?
What would PAC Control read with a 23mA input?
On a GRV-IMAI-8 (for instance), if the module scaling is configured for 4-20mA = 0-100% and the signal into the module is 21 mA, will PAC Control read 100% or 106.25%?
What would PAC Control read with a 23mA input?
This is going to take me a hot minute to setup a test for… In the meantime I have reached out to the engineers that wrote the module firmware…
Here is the reply from one of the engineers;
"The GRV-IMAI-8 @ 4-20mA is a little different because of 4mA offset.
The maximum input is 22.2mA , higher than that and you get a Qnan.
The module will show > 100%. ~= %105 ( max of 110% before Qnan )"
PAC Control is not in the engineers wheelhouse so they could not comment on that.
Hope that is helpful Philip.
Okay, that is helpful. I have a project requirement where we need to alarm when the input is 5% above or below range and I wanted to verify that we can detect that and I don’t have the hardware yet.
All I saw was this in the PAC Control help under Add/Edit Analog Point Dialog Box:
It says we can specify a lower or upper value beyond the standard value - I have not been able to do that (I can’t type in 21mA for example).
What version of PAC Control are you running?
(I’d like to test it here vs a newer version)
This is in 10.2e
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Yup, can confirm.
I take it this is what you are seeing?
The docs suggest that we should be able to enter the over range values here… Hmmmm
Yes, exactly - but if the scaled value will still go over to reach 11000, then that is what matters.
