Jump to content

D+ signal - CBE DS520AN


Recommended Posts

My CBE power unit appears to have lost the D+ signal so I can't get my Votronic B2B to run.

I have managed to pick up an ignition on signal which I'm using with a 30 second delay timer so I can charge when driving, but I'd really like to use D+.

Does anyone know where on the CBE unit - photo attached - I can pick up D+ other than point 17?

CBE DS 520 AN 1.jpg

Link to comment
Share on other sites


I read that you have found a blown fuse in your DS520.

For information the CBE DS300, and DS520 do not use D+ from the alternator field circuit. These units make their own simulated D+. An ignition switched supply from the base vehicle is connected to the DSxxx, and monitored internally. When the voltage exceeds about 13.3V (alternator charging), the supply is used to control the split charge and fridge relays, as well as being extended at point 17 on your CBE diagram for use on satellite dishes and B2B etc. It is my belief that it is the actual vehicle supply which is extended. This means that the supplying vehicle fuse also carries the current taken by items connected to terminal FA4 (point 17).


  • Like 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...