defcon.klaxon
Lifetime Supporting Member
Hi all,
I need to send a 4-20mA signal from a PLC (ICLinks Everest) to a paperless chart recorder (Endress and Hauser RSG30) and I'm having a hard time understanding how to properly wire it up. Each output on the PLC has a positive output and all outputs share a common ground. Each channel on the E&H RSG30 has a positive input and a negative output, thus creating the loop. But where would I land the shield? Would it go to the common ground or is that a bad idea?
Related, I'm noticing that the other signals going to the E&H RSG30 (from analyzers, not the PLC) do not have their shields grounded either. Isn't he point of shielded twisted pair that the shield is grounded on one side?
I need to send a 4-20mA signal from a PLC (ICLinks Everest) to a paperless chart recorder (Endress and Hauser RSG30) and I'm having a hard time understanding how to properly wire it up. Each output on the PLC has a positive output and all outputs share a common ground. Each channel on the E&H RSG30 has a positive input and a negative output, thus creating the loop. But where would I land the shield? Would it go to the common ground or is that a bad idea?
Related, I'm noticing that the other signals going to the E&H RSG30 (from analyzers, not the PLC) do not have their shields grounded either. Isn't he point of shielded twisted pair that the shield is grounded on one side?