Electrical CAD drawaing standards - in electrical CAD software
By Thor Vegge
Implementing ISO/IEC/EN standards in electrical documentation can be quite a task. We focus on making it easy to follow the electrical design drawing standards applied in the European Union (EU) and internationally.
Electrical drawing standards the easy way
To fulfil the IEC/EN standards as easily and accurately as possible, we have developed the electrical CAD software PCSCHEMATIC Automation, which has a workflow with integrated intelligent handling of standard requirements.
This workflow we consider the minimum requirements, for what you should demand of an electrical CAD software for following the electrical ISO/IEC/EN standards:
Project and Page templates
§1: Start by opening a project template containing project pages for schematics with already inserted drawing headers, as well as pages for parts lists and spare parts lists - according to the IEC/EN 61082 standard. Furthermore: This template project also contains a project front page, a table of contents for the project, chapter front pages, chapter tables of contents, and other relevant types of lists (e.g. components, cables, terminals, and PLC lists).
IEC/EN 60617 symbols - with attached article data
§2: Fetch the standard electrical IEC/EN 60617 symbols from the directly accessible symbol menu - with automatically attached article data from the component database.
Letter codes according to standards
§3: Place the intelligent electrical symbols in the schematics pages, and the program automatically assigns IEC/EN 61346-2 letter codes to the symbol names, and automatically connects the symbols with lines drawn according to IEC/EN 61082.
§4: According to various electrical ISO/IEC/EN standards, continuous numbering of symbols is recommended. The electrical CAD software PCSCHEMATIC Automation therefore automatically keeps track of which names/numbers have been used for the various types of symbols - and automatically suggests the next available name for the given symbol type.
Sub drawings / Sub diagrams - with attached article data
§5: Furthermore: You can place the necessary sub drawings - which contains already drawn diagram parts, with attached database information for the applied components.
Renames according to standards when copying
§6: When copying symbols, areas, diagram pages or full projects, the program lets you select which of the involved symbols - in all of the documentation - to rename automatically according to the applied naming standards and reference designations.
Changing reference designations acc. to standards
§7: When changing reference designations on chapter level, page level, or in an area, the program lets you select which of the influenced symbols, that should have changed their reference designations automatically according to the IEC/EN 61346 standard.
References between symbols acc. to IEC/EN 61346- inserted and updated automatically
§8: According to IEC/EN 61346, there must be references between symbols. In PCSCHEMATIC Automation, these references are both inserted and updated automatically, and you can jump to the other symbols for the same component by clicking on these references.
§9: According to IEC/EN 60204-1, the documentation must contain a spare parts list. In PCSCHEMATIC Automation, this list is filled out with project and component data automatically - just like all the other relevant types of lists, such as parts (BOM), components, cables, terminals, and PLC lists. These lists can be created on project, chapter, page or layer level, and can e.g. be filled out according to the applied reference designations. - See §15 also.
Graphical connection plans created automatically
§10: According to IEC/EN 60204-1, the documentation must also contain a graphical connection scheme/plan/list. In the electrical CAD software PCSCHEMATIC Automation this is created automatically - just like the graphical terminal and cable plans/schemes/lists. All you have to do, is to draw the diagrams, and let the program handle the remaining part of the required documentation.
Automatic documentation of non-standard symbols acc. to IEC/EN 61082
§11: According to IEC/EN 61082, applied non-standard symbols must be described separately in the documentation. In PCSCHEMATIC Automation, you just let the program document these symbols automatically.
Automatic project text translator
§12: According to IEC/EN 60204-1, electrical documentation of exported machines should be created in the language of the receiver. In PCSCHEMATIC Automation, the automatic project text translator supports you in this.
Wire uniquely identified acc. to IEC/EN 60204-1
§13: According to IEC/EN 60204-1, wires must be uniquely identified. In PCSCHEMATIC Automation, wire numbers are created automatically by the program. Furthermore, these wire numbers can be sent as wire number files to a wire numbering tool.
Any type of list generated automatically
§14: Furthermore, all types of list files can be generated automatically - such as label files, PLC I/O files or order files for component vendors.
§15: Even further, projects can be generated automatically via Microsoft Excel, from which you can also control project data, and merge several electrical documentation projects to one single project. When merging projects, the reference designation definitions, and other project data, can be controlled from Excel also. When merging projects, separate lists can still be generated for the different parts of the project, due to the use of reference designations - see §9.
See an electrical documentation project created acc. to the standards
§16: Finally, the program includes a complete electrical documentation project, created according to the standards - so that you can see a practical example for yourself. To do this, you must first download the free electrical CAD program PCSCHEMATIC Automation 40, and then open the included demo project. If you want, you can also see the electrical CAD manuals and the electrical CAD videos for the program.
Follow the standards the easy way
All of these automatic functions supports you in following the EN/IEC standards, while working as efficiently as possible, through all stages of the electrical documentation.
It is also worth mentioning, that drawing diagrams, and working with an electrical CAD software in general, should be as simple and straightforward as possible. This is also very much the case for PC|SCHEMATIC Automation, which as a general principle meets the user at the simplest level possible - without forgetting the advanced user.