The Definitive Connecting Power Thread

Cwejman, Livewire, TipTop Audio, Doepfer etc... Get your euro on!

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Tifaret
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Post by Tifaret » Thu Mar 28, 2013 11:20 pm

wbkennedy1 wrote:Hey Tifaret,,

so i did solve this problem!
my power cable was connected backwards to the module. so I removed the header from the pcb and reversed it and then connected it to my flying bus boards of the uzeus.
the module was alright! hope this helps!
yup, exactly the problem with mine (we figured it out in another thread) thanks man!

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radiodread87
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Post by radiodread87 » Thu Mar 28, 2013 11:33 pm

I had not seen this diagram before so if it has already been posted then I apologise but Dave Jones posted this in another thread and I really thought it ought to be in this one

Image
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cartoonbomb
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Post by cartoonbomb » Fri Mar 29, 2013 3:50 pm

Hi guys, I just got a Borg2, and I wanted to check with you guys because the module's connector is not clearly marked.

It goes:

SV1
-
-
-
-
10

The ribbon was already hooked up with the red wire on the 10. I get that the wire doesn't matter, but I got this used so I want to assume that the 10 is the -12v. <- which it is, all is well

Also, I'm going to assume that the ribbon cable on my uZeus carry the -12v on the bottom pin...
Last edited by cartoonbomb on Mon Apr 01, 2013 2:19 pm, edited 1 time in total.

cartoonbomb
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Post by cartoonbomb » Mon Apr 01, 2013 2:05 pm

Hey guys, the pic below is my new Pittsburgh Outs module, shown from the bottom. As you can see, the bottom pin leading to the blue wire is labeled "10". Not shown is the top pin, which is labeled "SV1". Curiously, it is the same labels as the Borg2 , only reversed.

So does anyone know which pin is the -12V? I ask because if it is the bottom pin, then the connector is keyed incorrectly. The only way to get it in is to twist in around, which would connect the top pin (SV1) to the -12V on the uZeus busboard.

If the bottom pin (10) is the -12V, then I will have to reverse the ribbon on the module end, but I can't because the outputs don't give me any clearance for the cable! Any help would be greatly appreciated.

Image[/img]

Alrighty so I went ahead and flipped it around on the module end, because apparently the connector on the busboard end is backwards. There is enough clearance, but I don't like the look of it :\

Image

But now, I think I have another problem! The wires are oriented to the top!

Image

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Upright
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Post by Upright » Tue Apr 09, 2013 10:41 pm

cartoonbomb wrote:Hey guys, the pic below is my new Pittsburgh Outs module]

Did you ever get this sorted out?

daikaiju
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Post by daikaiju » Wed Apr 10, 2013 4:29 pm

I recently bought a Doepfer a-138m (the matrix mixer), but now I'm stumped as far as figuring out what the proper orientation of the power connection is. I can't make out any symbols, and since the circuit board is parallel with the faceplate instead of perpendicular, I can't follow the directions from the normal Doepfer example.

Help!
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cartoonbomb
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Post by cartoonbomb » Thu Apr 11, 2013 10:31 am

Upright wrote:
cartoonbomb wrote:Hey guys, the pic below is my new Pittsburgh Outs module]

Did you ever get this sorted out?
Yeah, the Pittsburgh folks sent me a new corrected ribbon. the only other solution would have been to file off the key notch.

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Upright
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Post by Upright » Thu Apr 11, 2013 12:21 pm

cartoonbomb wrote:
Yeah, the Pittsburgh folks sent me a new corrected ribbon. the only other solution would have been to file off the key notch.

Awesome, so on that module is the SV1 the -12V side?

Maratets
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Doepfer power issue

Post by Maratets » Sat Apr 20, 2013 6:57 am

Hey guys! Not exactly the "connecting the modules to the bus board" issue, but as it pertains to power supply this seems to be the right thread to post it in.

It looks that something's wrong with the -12 V supply in my case (Doepfer low cost 9U case). The -12V LED is off on all three buses (the +12 is on, as is the +5 where the adapter is plugged in) and most modules act funny (no sound and indicators are working, but clearly not the way they should). The other cases I have are fine, and the same modules work there. So I figure the -12V supply does not work properly.

I've been reshuffling my modules yesterday, and it is quite possible I've ended up with slightly more current draw in that case than it is supposed to house. However, if this is the reason for the malfunction, it seems strange to me that only the -12V supply has been affected.

Is it really possible to damage the power supply by drawing more current than it is meant for? I could have gone some 100-150 mA overboard in an 1,2 A board and only had it on like that for a few minutes. and no part of the unit seemed to be overheated or cooked, the fuse seems to be OK as well. And, if it is indeed possible, why would only the -12V line go dead?

Is there anything I could check by myself, before I have to send it out for repair? I wouldn't want to risk any procedures reserved for electronics specialists, but it could be that something stupidly easy that I am overlooking.

Thanks in advance for any help.

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GuyaGuy
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Post by GuyaGuy » Sat Apr 27, 2013 3:40 pm

n00b question here...I'll post it here since it might help other n00bs.

I'm new to the bipolar power supplies that Euro uses. I get the -12 issue that this thread is about and was careful about hooking up my first units correctly. What I'm wondering about is the -/+12 supply. Am I correct in believing that many modules can run off -12 or -12? And that, with the HEK, there are 2 busses--one for +12 (top) and one for -12 ) bottom? If so are there modules that only run on -12 or +12?

Image

pnyboer
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Malekko pin header

Post by pnyboer » Sat Apr 27, 2013 5:36 pm

Which is -12V on the malekko pin header? They are labeled 1 and 10. I see a post above wrt to the Borg2, but I don't see an answer!
Thanks
Peter

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bezier
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Post by bezier » Tue May 21, 2013 9:45 am

Today i finally received my Tiptop HEK, felt like christmas. However i now encounter a problem connecting it.

I did not yet connect any module. When i connect the uZeus and turn it on, only the +12V and -12V lights are illuminated. In the manual it explicitly says
If for any reason, one or all of them are not illuminated then immediately turn
the switch to the ‘OFF’ position.
I dont see what is going on? Is something not right? I am a bit frightened something blows up :despair:


edit:
Ridiculously fast service at Schneidersladen helped me out, i did not put a 15V jumper in it. Now everything runs and blinks smoothly.

Mock3000
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Filtare with a cell 90

Post by Mock3000 » Tue May 21, 2013 9:46 pm

Hi all, just built a brand new modular system built into Pittsburgh's cell 90 cases and am having a bit of a mismatch with a couple of division 6 pieces. The cell 90s cable is keyed with the negative opposite of what the division 6 filtare requires. Any idea of a solution?

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HIMA
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Post by HIMA » Tue May 28, 2013 11:15 pm

if not for this thread, things could have gone horribly wrong. :hail:

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johnnylonz
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Post by johnnylonz » Fri May 31, 2013 12:24 pm

I was wondering if anyone has experience connecting an Analogue Systems module to a doepfer style bus board (I'm using a FoH bus board with keyed headers).

I have an RS60 with an Asys cable connected with the red line up at the 0v marking, like so:

Image

this cable runs into an adapter like this:

Image
Image

which then lines up with my busboard properly with the red line down at -12v:

Image

The problem is that the key on the header going into the busboard is on the left side of the cable, whereas the key on the busboard is on the right side. Any idea what I might need to do? Maybe "flip" the entire cable/adapter combo so it's the opposite on both ends? I.e., leave the cable & adapter attached but switch it so the red line on the Asys end is at -12v and on the doepfer end is at +12v?

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mackster
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Sem20 power strip

Post by mackster » Sat Jun 01, 2013 10:48 am

hello world - this is my first post so sorry for duplicating a question that may have been answered before, but as a noob I can't search the forums yet...

I've got a bunch of modules on their way to me, and the 2nd to arrive (after the lovely e350) is a sem20.

Anyway, out of the box, the red strip on the power lead that connects to the sem20, where the pcb is marked "red band" is presumably correct, but the keyed end of the ribbon that connects into the power strip of the uzeus has the red strip on the opposite side to the power strips red strip.

Is this ok, or is it crossing the streams bad?

I can see from this sticky that other people have discussed this, but I don't want to fry my new eurorack by thinking I've understood a solution and potentially not.

So would someone mind (please) explaining how I can hook this
Module up and get wiggling!

Thanks

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NU
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Post by NU » Tue Jun 11, 2013 5:29 pm

Can anyone confirm that -12V is at the bottom for MFB modules? There's nothing marked on the module, manual just refers to the stripe on the ribbon cable.

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ben_hex
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Post by ben_hex » Sat Jun 29, 2013 11:05 am

Can anyone help regarding a Borg 2 filter. Plug was installed on the module already im presuming red stripe down on the bus board. Can't see any negative -12V markings on the board or the triangle on the connector itself.

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ben_hex
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Post by ben_hex » Sat Jun 29, 2013 11:30 am


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ben_hex
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Post by ben_hex » Sat Jun 29, 2013 1:09 pm

I've realised that it must be red stripe down. As you can see in the pictures there's no connection to the top 3 pins. Which makes sense as it doesn't take cv gate or 5v from the board. :doh:

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windspirit
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Post by windspirit » Wed Jul 10, 2013 3:06 pm

IT...IS...ALIVE!!!!!

Lol thought I'd share some research I just had to do:

shrouded power connector (dist. board side):

http://www.digikey.com/product-detail/e ... 3391504211

The spacing for power connector pins is 2.54 mm or .1"

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gliiitches
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Post by gliiitches » Mon Jul 22, 2013 2:29 pm

Kind of related to the power topic... I'm a bit confused about power consumption.

I'm about to order a 9u Doepfer case about half filled with Doepfer modules. I'll probably order a couple of Make Noise ones too. This will be my first ever modular system.

How do I ensure the modules I'm putting in the case don't exceed the power it can supply?

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Dcramer
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Post by Dcramer » Mon Jul 22, 2013 11:37 pm

I use modular grid to keep track of the power, and compare it to the power supply specs, keeping some overhead in mind.

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zebulun
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Post by zebulun » Tue Jul 23, 2013 2:14 pm

hey guys, I am having troubles connecting my new a132-3 to my uzeus, the pic shows what the ribbon cable looks like, my only question is, where is the -12v on the end going to the uzeus? is it the top where the triangle is? I've looked over this topic a bunch of times and I'm still confused lol, sorry for the dumb question and thanks for the help.

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zebulun
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Post by zebulun » Tue Jul 23, 2013 2:16 pm

hey guys, I am having troubles connecting my new a132-3 to my uzeus, the pic shows what the ribbon cable looks like, my only question is, where is the -12v on the end going to the uzeus? is it the top where the triangle is? I've looked over this topic a bunch of times and I'm still confused lol, sorry for the dumb question and thanks for the help.
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