Dear All,
in my project, some signals have been added that generated by analyzers. these signals are 4 wires (it means DCS cards should be Passive), but i have only some AI cards 16 CH with 2 wires Terminal Block ( Active AI Card).
is it possible to use the existing AI modules (Active AI Cards) for these kind of signals? if Yes, how can i use the 16 CH AI cards for 3 wires signals?
Thanks and Regards
Pouya
In reply to AdrianOffield:
Thank you
In reply to Pouya:
HI,
YES, you can use them you connect the Analog measure + signal to the Even numbers (- ) and connect the measure - wire to the shielding bar.
You feed the suplly from some other place to the field device..
Niklas Flykt
Klinkmann Oy
Key Account Manager safety products
nikfly@gmail.com
YES, you can use them you connect the Analog measure + signal to the ODD numbers (- ) and connect the measure - wire to the shielding bar.
Hi,
when I have connected them like there has been no problems.
If you want it totally passive you have to change the base plate to the passive version..hmm 16..8 channels?
EDIT: You might have to have the supply from the same power source as the cards...
In reply to Niklas Flykt:
Dear Niklas
Thanks a lot
Hence for example, for channel 1, i will connect the Signal (+) to Terminal Number 2 (NOT 1) and then connect the Signal(-) to shield bar, NOT to terminal number 2. am i right?
Dear Pouya,
That is right, it should work if you field equipment isn´t using some odd voltage in analog loop. (e.g. Siemens s7-1200 AO is 15 volts max... ).
Connect one loop and see if it works.
Very Good, Many, Many Thanks Niklas.
i will inform you about my test.
Best Regards
In case this question was raised for an M-series 16 Channel AI Card, we have a new Terminal block available which will be able to deal with a 4-wire Transmitter,
in the same straight forward way, like for a 2-wre Transmitter !
Checkout the following PDS and Page 25:
www2.emersonprocess.com/.../PDS_M-series_Traditional_IO.pdf
VE4003S2B6 vs. VE4003S2B7