• AutoCAD Electrical

Automated ladders in AutoCAD Electrical

Electrical drawing success starts with using the Insert Ladder tool to automatically create smart ladder diagrams.


00:04

AutoCAD Electrical makes it easy to insert a ladder diagram,

00:08

a common type of electrical schematic that was clearly named after its appearance.

00:13

With multiple wires running perpendicular to two outside wires,

00:18

the layout literally looks like a ladder.

00:21

The Insert Ladder tool automates the creation process.

00:25

To create a new ladder, on the ribbon, click the Schematic tab,

00:29

choose the Insert Wires/Wire Number panel,

00:33

and then click the Insert Ladder tool.

00:36

The Insert Ladder dialog opens with options to define the appearance of the ladder.

00:42

For example, you can set the Width, the Spacing between each rung, and the Length.

00:48

For Length, you can enter either the total length or the number of rungs.

00:53

For this example, enter a value of 6 Rungs, and then press ENTER.

00:59

The Length is automatically calculated, based on the Spacing value.

01:03

The 1st Reference value is based on the highest number of ladders in the drawing.

01:08

In the Phase group box, try switching between the 1 Phase and 3 Phase electrical diagrams

01:14

to see how the dialog changes in response.

01:18

Ideally, whenever you open this dialog,

01:21

select the phase first to enable the relevant options,

01:24

and then move on to the other settings.

01:26

In this case, choose 1 Phase.

01:29

Under Draw Rungs, select any of the options to see a preview of the ladder to be created.

01:36

For example, if you select No Rungs, only the two outside wires are drawn, with no rungs or bus.

01:43

The default value, Yes, draws all rungs and bus pieces.

01:48

In the Skip field, you can enter the number of rungs to skip.

01:52

For example, entering 2 and pressing ENTER skips every 2 rungs and draws every third rung.

01:60

For this example, set the value back to 0, and then press ENTER.

02:04

Click OK to confirm the selected options.

02:08

Back in your drawing, AutoCAD Electrical prompts you to specify the start position of the first rung, or type in a value.

02:16

For this exercise, click in the upper-left corner to place the first rung and draw the ladder.

02:22

In theory, you could also use the Insert Wires tool to draw the same collection of wires,

02:27

but as you can see, the Insert Ladder tool is much faster than drawing the wires individually.

02:33

The ladder you just created is typical of IEC style drawings

02:37

and has no reference numbers associated with it.

02:40

Reference numbers come from the XY coordinates set up in your title block drawing.

02:45

For any drawing, the reference number scheme is configured in the Drawing Properties dialog.

02:50

On the ribbon, Schematic tab, click the Other Tools panel, and then select Drawing Properties.

02:57

In the Drawing Properties dialog, select the Drawing Format tab.

03:02

Under Format Referencing, notice that the default for this drawing, the X Zones option, is selected.

03:08

X-Zones is similar to X-Y Grid, but with no Y-axis.

03:14

Reference Numbers assigns a column of reference numbers to each ladder column.

03:19

Select each of the three options to see how the preview changes.

03:22

For this example, select Reference Numbers, and then click OK.

03:28

Next, delete the ladder you just made and create a new one with reference numbers.

03:34

In the drawing, press and hold the mouse button as you drag to select the previously created ladder,

03:40

and then, on your keyboard, press DEL.

03:43

Click the Insert Ladder command to open the Insert Ladder dialog.

03:48

Set the First Reference value to 1100, and then press ENTER.

03:53

For the Length, set the number of Rungs to 9, and then press ENTER.

03:58

Leave the remaining options set to their defaults and click OK.

04:03

In your drawing, click to select the insertion point.

04:07

AutoCAD Electrical creates a ladder with reference numbers assigned to each rung.

04:12

Reference numbers, or really, the first wire reference number, is what makes a ladder intelligent.

04:20

It contains all of the information about the ladder and is inserted as a block with attributes.

04:25

The remaining numbers are simply text entities, for your reference only.

04:31

To compare the two, with no command running, select the first reference number,

04:36

and you can see that it is a block reference.

04:39

On your keyboard, press ESC to deselect the first number.

04:43

Select any other reference number, and you can see that it is text only.

04:49

In reality, you could delete all text entries without changing the functionality of the ladder.

04:55

The insertion point of the first block includes all the information used by AutoCAD Electrical

05:00

to determine the locations of inserted components and their tag values.

Video transcript

00:04

AutoCAD Electrical makes it easy to insert a ladder diagram,

00:08

a common type of electrical schematic that was clearly named after its appearance.

00:13

With multiple wires running perpendicular to two outside wires,

00:18

the layout literally looks like a ladder.

00:21

The Insert Ladder tool automates the creation process.

00:25

To create a new ladder, on the ribbon, click the Schematic tab,

00:29

choose the Insert Wires/Wire Number panel,

00:33

and then click the Insert Ladder tool.

00:36

The Insert Ladder dialog opens with options to define the appearance of the ladder.

00:42

For example, you can set the Width, the Spacing between each rung, and the Length.

00:48

For Length, you can enter either the total length or the number of rungs.

00:53

For this example, enter a value of 6 Rungs, and then press ENTER.

00:59

The Length is automatically calculated, based on the Spacing value.

01:03

The 1st Reference value is based on the highest number of ladders in the drawing.

01:08

In the Phase group box, try switching between the 1 Phase and 3 Phase electrical diagrams

01:14

to see how the dialog changes in response.

01:18

Ideally, whenever you open this dialog,

01:21

select the phase first to enable the relevant options,

01:24

and then move on to the other settings.

01:26

In this case, choose 1 Phase.

01:29

Under Draw Rungs, select any of the options to see a preview of the ladder to be created.

01:36

For example, if you select No Rungs, only the two outside wires are drawn, with no rungs or bus.

01:43

The default value, Yes, draws all rungs and bus pieces.

01:48

In the Skip field, you can enter the number of rungs to skip.

01:52

For example, entering 2 and pressing ENTER skips every 2 rungs and draws every third rung.

01:60

For this example, set the value back to 0, and then press ENTER.

02:04

Click OK to confirm the selected options.

02:08

Back in your drawing, AutoCAD Electrical prompts you to specify the start position of the first rung, or type in a value.

02:16

For this exercise, click in the upper-left corner to place the first rung and draw the ladder.

02:22

In theory, you could also use the Insert Wires tool to draw the same collection of wires,

02:27

but as you can see, the Insert Ladder tool is much faster than drawing the wires individually.

02:33

The ladder you just created is typical of IEC style drawings

02:37

and has no reference numbers associated with it.

02:40

Reference numbers come from the XY coordinates set up in your title block drawing.

02:45

For any drawing, the reference number scheme is configured in the Drawing Properties dialog.

02:50

On the ribbon, Schematic tab, click the Other Tools panel, and then select Drawing Properties.

02:57

In the Drawing Properties dialog, select the Drawing Format tab.

03:02

Under Format Referencing, notice that the default for this drawing, the X Zones option, is selected.

03:08

X-Zones is similar to X-Y Grid, but with no Y-axis.

03:14

Reference Numbers assigns a column of reference numbers to each ladder column.

03:19

Select each of the three options to see how the preview changes.

03:22

For this example, select Reference Numbers, and then click OK.

03:28

Next, delete the ladder you just made and create a new one with reference numbers.

03:34

In the drawing, press and hold the mouse button as you drag to select the previously created ladder,

03:40

and then, on your keyboard, press DEL.

03:43

Click the Insert Ladder command to open the Insert Ladder dialog.

03:48

Set the First Reference value to 1100, and then press ENTER.

03:53

For the Length, set the number of Rungs to 9, and then press ENTER.

03:58

Leave the remaining options set to their defaults and click OK.

04:03

In your drawing, click to select the insertion point.

04:07

AutoCAD Electrical creates a ladder with reference numbers assigned to each rung.

04:12

Reference numbers, or really, the first wire reference number, is what makes a ladder intelligent.

04:20

It contains all of the information about the ladder and is inserted as a block with attributes.

04:25

The remaining numbers are simply text entities, for your reference only.

04:31

To compare the two, with no command running, select the first reference number,

04:36

and you can see that it is a block reference.

04:39

On your keyboard, press ESC to deselect the first number.

04:43

Select any other reference number, and you can see that it is text only.

04:49

In reality, you could delete all text entries without changing the functionality of the ladder.

04:55

The insertion point of the first block includes all the information used by AutoCAD Electrical

05:00

to determine the locations of inserted components and their tag values.

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