Automatic Wire Sequencing in AutoCAD Electrical




Feb. 24, 2016

By: Elvis R. Sverko



IMAGINiT Tricks Tutorial: Manual creation of a report to designate the exact sequence of wire and pin connection takes extra time, which is always insufficient. Fortunately, AutoCAD Electrical software can perform these tasks automatically.

Editor’s Note: This tutorial is courtesy of IMAGINiT Technologies.

Wire tees are a very common component of ladder logic diagrams created using AutoCAD Electrical software. However, since these are not actual wiring diagrams, these ladder logic diagrams leave it up to the builder to decide exactly where the physical wires are placed – or in other words, the sequence of the wiring. Electrically, it is a single node, so to some extent it does not matter how it is wired.

In the following example, the four components and their respective pins are all connected via wire number 213B: PB213A (pin B), CR213 (pin K1), CR207 (pin A2Y) and M215 (pin A1).

However, when the assembler tries to build the physical unit by attaching the wires to the pins, what would be the best sequential approach? If the individual needs to install a single wire from PB213A (pin B) to CR213 (pin K1) first, then another wire from CR213 (pin K1) to CR207 (pin A2Y), and a third and last wire from CR207 (pin A2Y) to M215 (pin A1)? Or does the first wire have to go from PB213A (pin B) straight to M215 (pin A1) first, then to the pins of the other two components?

To put it another way:

  • PB213A (Pin B) – CR213 (Pin K1)
  • CR213 (Pin K1) – CR207 (Pin A2Y)
  • CR207 (Pin A2Y) – M215 (Pin A1)

Or:

  • PB213A (Pin B) – M215 (Pin A1)
  • M215 (Pin A1) – CR213 (Pin K1)
  • CR213 (Pin K1) – CR207 (Pin A2Y)

Electrically, either sequence (or any combination) could work. But for a variety of reasons including ease of assembly and minimum wire length, the circuit engineer may want a specific sequence.

Therefore, the engineer could try to draw the circuit exactly as he wants it to be physically wired. But this approach results in less sharp than desired designs, as shown below.

Or

Therefore, most engineers choose to have more orderly drawings in ladder logic form, and then they also create a Wiring List From / To Report to point out to the builder the exact sequence to physically wire it. However, completing this process manually can take additional time and effort. Autodesk AutoCAD Electrical software can perform these tasks automatically with its wire sequence capability.

1 2 3 

Leave a Reply

Your email address will not be published.