Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here


CE Wiring Diagrams

CE Wiring Diagrams

CE Wiring Diagrams

Hello Gentlemen,
I work for an American Industrial Service firm that builds custom control panels.
I have heard that to CE certify I need to convert our wiring diagrams to a European style. Does anyone know the standard that covers this? Any other standards that you would recommend for an industrial control panel would be helpful also.
Ben Murphy

RE: CE Wiring Diagrams

Ben the electrical standard you want to review is EN 60204-1 or IEC 60204-1 depending on if you intend to license the panel. Do not limit yourself to just the electrical standard it is not that simple. It is necessary to find out the intended use of the machinery and if any other standards will apply such as lasers/UV lights, explosive atmospher and so on. You have to review Annex I of the Machinery Directive for requirements not covered in EN 60204-1. You must also consider EN 60529 for IP ratings and EN 954 for category of safety circuit and components to be used.

Christopher Caserta

RE: CE Wiring Diagrams

Thanks Christopher!

RE: CE Wiring Diagrams

Colors should be considered as well. Most notably red in my case. Also, start and stop symbols: stop is 'o', run is '|'. We make single motor protection relays so I am not familiar with any other requirements.
ccaserta, Would the machinery directive apply to a panel?

RE: CE Wiring Diagrams

You have to consider the final application and your customers needs. If you know that the electrical panel will be used on a machine, then definately consider Annex I of the Machinery Directive. If you build a panel without considering all the final requirements of the end application you could miss somehting that could cause you to redesign or buy a bigger panel and do another layout. That would cost you time and loss of money in several ways. Annex I of the Directive combines Electrical, Mechanical, Test, Labeling, user manual requirements, lighting, stoping (E-stops and normal stops), lifting, guarding, controls and much more. In addition components that fall into Annex IVB of the Machinery Directive are require to go through Type Approval certification if they are used as a safety component to protect a person.

Keep in mind that there are at least 12 main standards (not including component standards) that are required to perform a final machinery certification and they all work in conjunction with the Machinery Directive.

Your correct about your colors buzzp, red is called out in EN 60204-1 as AC controls, the rest of the required colors are listed as well. Although your probably using IEC 60947-5 for your European standard to conform to the Low Voltage Directive.

Christopher Caserta

RE: CE Wiring Diagrams

I just wouldn't think his responsibility would be with the whole system, just supplying a CE marked panel to a customer. The customer is likely another company that should be concerned with the 'system'. Am I wrong?

RE: CE Wiring Diagrams

Your correct the customer is concerned with his system. As an OEM his concern is, I do not want to buy a panel that I will have to change or redesign because my vender did not consider all applicable Directives for Final application.
Example: There are computers for both Office and Industrial applications, Both CE Marked. A machine manufacture wants a PC that will control his system. The office computer will provide the function as well as the Indutrial PC. If I use the office PC, I will never pass my certification because the machinery directive was not considered. There are no symbologies, E-stops, levels of access codes, it hasn't been tested to the EMC directive correctly so I could fail my final system testing. I don't meet my IP requirements for Enclosures protection. There  aren't any hard on/off switches and so on.
I agree the component manufacture is not responsible for the OEM final system. But he should be designing, as I'm sure you do to meet everyones requirements for final appications.

Christopher Caserta

RE: CE Wiring Diagrams

Thanks for the clarification.

RE: CE Wiring Diagrams

If it is electrical, also consider the Low Voltage Directive (mainly considered with electrical safety, i.e., electrocution and fire) and the EMC Directive (RF interference, etc.), not just the Machinery Directive.  If it is purely mechanical or pneumatic, disregard this.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close