irondesk40
Member
Have a question about what others on this site think is the best pratice when wiring analog inputs and outputs. Have a project where I will be using a allen bradley micrologix 1100 with a 1762-of4 analog module. At the bottom of the control panel we always have a terminal strip where all field wiring coming into the panel is terminated at. I plan to desinate each analog output as AO 0, AO 1, etc.. I plan on running a two conductor shielded cable from each analog output to the terminal strip. For example, AO 1 will have a two conductor shielded cable, one of the wires will go to AO 1, the other to COM on the analog module. The two wire cable will go down to the terminal strip, which will have a terminal labeled AO 1, A0 1 Common. At the terminal strip I plan on terminating the shield to a terminal labeled PE, which is Ground. Question is , what would be the best pratice for the termination of the shield at the end of the cable that connects to the analog card. And also, when the field wiring is connected to the terminal strip at the bottom of the panel, the shield in field device cable will also be connected to the terminal labeled PE, which is frame ground.
Is this the best approach?
Thanks for any input.
Is this the best approach?
Thanks for any input.