How To Read Electrical Control Panel Drawings

This article is different any of the articles nosotros've done earlier.Nosotros're going to delve into the world of panel drawings! This is an exceptionally useful weapon to have in your armory, every bit it not only helps you to build panels and sympathize the inner workings of them, but they help to troubleshoot bug if they occur subsequently. If yous tin follow a panel wiring diagram, you will be able to find the root crusade of any problem in a panel! Learn how to follow an electrical panel wiring diagram below.

Let's get back and take a wait at the control panel, and effort and figure out some of the connections by following a wiring diagram.

Every bit I've mentioned in the previous manufactures, this is a control console that is used for a organization that turns wastewater into clean water.

It is a 2-door control panel on the forepart of which we have some switches that are connected to the PLC inputs and outputs.

We are going to look at these switches and try and figure out the wiring backside them, every bit you lot may exist curious as to how these switches are wired to the PLC!

Let us showtime place our push buttons; we have the Mute Buzzer push button button, the ESD Reset push button and the Emergency Terminate button push.

Try to remember these from the previous RealPars article about Reviewing the basics of an electrical control console ,and run into if nosotros can find any of these items in the electric drawings.

Electric Panel Wiring Diagram Software

All the wiring that you see in the panel is washed based on the wiring diagram.

This is what we draw using AutoCAD Electric.

Each page of this wiring diagram shows the exact wiring for dissimilar sections of this control panel.

For instance, for our Emergency Terminate push button, information technology shows the wiring for this switch. You encounter that there are four wires that are connected to this switch.

These are wires on the back of the Emergency Stop push button, on the rear of the door.

Each of these wires has a tag number. The tags for these two wires are ane and on the other cease is ii.

Console Wiring Diagram Pages and Sections

For the upper wire, it shows that there is a wire that comes from folio 200 section 1.

Nosotros have the page numbers at the bottom of each folio.For example, it shows that we are on page 311.

The wire comes from folio 200 section ane.

So I'll become to page 200 and so department 1 and this is where this wire comes from.

As you tin encounter it says this wire goes to folio 311 section 1, which is the page and the section that we were looking at. So if I go to page 311 and department ane, I can run across this wire.

At present if I go back to page 200, you encounter that this wire comes from folio 150 section 9.

So if I go to folio 150 and section 9, I can come across where this wire comes from.

Yous tin see that it says the wire goes to folio 200 section 0 which is where we just came from.

So this wire goes to page 200 section 0.

Then it goes to page 311 department 1.

This is page 311 section 1 and this is the wire that is connected to the Emergency Stop push button.

The aforementioned goes for the other wires as well. For case, this wire comes from page 310 section 9.

This 1 comes from folio 200 section 1 again.

And this ane connects to our PLC digital input. Andthe tag for the PLC input is 300U2.one.

In the back of the Emergency Stop push button, you see that we have four wires, simply as what nosotros accept on the wiring diagram.

Ii wires are tagged as "1" and two wires are tagged as "2".

Based on the diagram, i of these wires with the tag 2 goes to the PLC digital input.

Permit'due south meet if we can find this wire.

In the wiring diagram, it says the tag for the PLC input that the push is connected to is 300U2.1.

These are the tags for the PLC inputs and outputs.

At present based on the diagram I need to look for a wire that is tagged as 2. And then in the epitome below, yous'll encounter the wire that I am looking for.

Ane end of this diagram is connected to the push and the other end is connected to the PLC input. So this is how like shooting fish in a barrel it is to read the wiring diagram for a command console.

It goes exactly the same for the other switches that we have here likewise.

And so to sum information technology all upwards, here is what nosotros learned in this article:

– All the wiring that you see in the panel is washed based on the wiring diagram. This is what nosotros draw using AutoCAD Electrical.

– Each page of the wiring diagram shows the exact wiring for different sections of the control console.

– Each of the wires in the wiring diagram has a tag number. These tags tin can be plant in the panel as well.

– Using the folio numbers and the sections, in the wiring diagram, you can hands follow the wires and see where each wire is coming from.

That's it for this article!

There was a lot of back and forth in that article, hopefully, y'all didn't get lost!

If you didn't, you're well on your manner to condign an AutoCAD designer, or panel wireman, or perhaps you want to work out in the field?! Well, you're on runway for that likewise.

This commodity was brought to you by RealPars in partnership with Pro-control in the Netherlands.

They are experts at control arrangement blueprint and industrial automation. They have a squad of world-class automation engineers and have been designing and implementing industrial control systems in different industries for many years.

If y'all want to get in contact with them, you can check out their website at pro-control.nl.

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The RealPars Team