The following section describes the creation of a simple single-line schematic page. First, a single-line schematic page is added to the project. Two symbols (a motor overload switch and a three-phase motor) are then placed on this page and connected to each other using autoconnecting. A connection definition point is used to designate the resulting connection.

Preconditions:

• You have opened a project.
• You have access to a single-line symbol library.

Create a page for single-line representation

1. Select the following commands: Tab Home > Command group Page > New.
2. In the New page dialog, select the entry "Schematic single-line (I)" from the Page type drop-down list and click [OK].
   
   EPLAN creates a page of page type Schematic single-line and opens it in the graphical editor.

Insert symbols

1. Select the following commands: Insert center > Breadcrumb trail Home.
2. Enter the "ql3" string in the Find field of the Insert center and start the search by pressing [Entry].
3. In the search result use the arrow button to open the Symbols folder for which two search hits are shown.
   
   The multi-line and the single-line symbol of a motor overload switch are shown in the preview.
4. Select the single-line symbol in the preview tile. This is a single-line motor overload switch with 6 connection points, with the symbol name QL3 and the symbol number 124.
5. Move the cursor into the single-line schematic page and click the left mouse button briefly at the position where you want to place the motor overload switch.
   
   The properties dialog is opened.
6. Leave the specified device tag Q1 as well as the connection point designation.
7. Click [OK].
8. Use the search in the Insert center to insert another symbol into the schematic, this time the symbol M3 with the symbol number 62.
9. Place variant A of the three-phase motor with PE / PEN connection in the schematic, directly below the motor overload switch Q1 so that an autoconnect line connects both components.
10. Leave the suggested device tag M1 and the connection point designation of the motor as they are.
    
    The following schematic is displayed:
    
    

Place the connection definition point

To represent the connection with three conductors, a connection definition point is placed on the autoconnect line.

1. Select the following commands: Tab Insert > Command group Cables / connections > Connection.
2. Place the connection definition point on the autoconnect line between the two symbols in the schematic.
3. In the Properties <...> dialog open the Symbol / function data tab, select the "Single-line" entry from the Representation type field, and click Apply.
4. Change back to the Connection definition point tab.
   
   The Properties list displays the Number of functions property. If this is not the case, add this property to the list via the (New) button.
5. Also bind this property to the Display list so that the entered value is displayed at the connection definition point in the schematic.
6. Change back to the Connection definition point tab and enter the value "3+PE" into the Number of functions field.
7. Accept the entries in the Properties <...> dialog by clicking [OK].
   
   The following schematic is displayed:
   
   

See also

Single-line Representation: Principle