I have a few I/p transducers(which work on 4-20mA loop current) and I have made a single cable for all of them, they each have posititive, negative and Ground wires. The controller I have for these I/P transducers have only positive and negative wires. I have a few questions and would really appreciate some advise
1) What should I do with the ground wires?
2) The controller sits in a huge metal cabinet, should I connect the ground wires to the cabinet?
3) What kind of grounding should be done, is it signal grounding, chasis grounding or earthing? I'm confused about this. The symbol I saw on the I/P transducer is the earthing symbol but since this is a current loop I though it would be a signal ground.
Details about the parts:
V/I converter that is connected to the transducer: https://www.amazon.com/KNACRO-Voltage-Current-Conversion-current/dp/B0793MLDXZ/ref=pd_cp_421_1?pd_rd_w=61AJ1&pf_rd_p=ef4dc990-a9ca-4945-ae0b-f8d549198ed6&pf_rd_r=PAN3QRZF0ENADYC2DJ7N&pd_rd_r=4b180e82-a70a-11e9-8b3f-05565185fef1&pd_rd_wg=740lv&pd_rd_i=B0793LQZWC&refRID=PAN3QRZF0ENADYC2DJ7N&th=1