H15 connectors

pre65 · Post by **pre65** » Tue May 20, 2014 5:01 pm

I'm looking at a 24V PSU with an H15 connector.

The pin function is stated, but I'm not sure of some.

+Vout - makes sense
-Vout - makes sense
+sense
-sense both as close to load as possible.
extI/0+ = ?
PFQ = ?
PFQ/ = ?
extI/0- = ?
N -Neutral
L - Live
PE = ? (protective earth ?)

pre65 · Post by **pre65** » Thu May 22, 2014 10:40 pm

Any ideas ?

Two PSUs are now on there way to me so I'd like to be able to wire them up properly.

Post by **Nick** » Thu May 22, 2014 11:07 pm

pre65 wrote:Any ideas ?

Two PSUs are now on there way to me so I'd like to be able to wire them up properly.

Doesn't the spec sheet for them say what its for?

Dave the bass · Post by **Dave the bass** » Fri May 23, 2014 8:03 am

PE, yep, I think you're right there Phil.

The sense pair I'd imagine sit in parallel with + - output from the PSU but connect the sense pair (as its says) as close to the point in the cct that you want the actual 24V to be across. Its a way of getting round any voltage drop that might occur on the 24V feed to whatever it is the PSU is supplying. The PSU might produce (say) 24.8V DC at it's o/p connector but the remote sense locks the monitored point to exactly 24V via its remote sense pair.

The others, lordy knows.

DTB

Post by **Nick** » Fri May 23, 2014 8:32 am

Either way, the sense connections need to be connected to the output, either at the power supply, or better at the load. Without them, the supply can't regulate because it won't see its output.

Dave the bass · Post by **Dave the bass** » Fri May 23, 2014 9:05 am

Yeah, the type I use on my SB Touch's wont supply an o/p unless the sense can track the o/p from start up, the OVP kicks in straight-away to protect the load.

DTB

pre65 · Post by **pre65** » Fri May 23, 2014 9:18 am

Thanks guys.

The input, standard output and sense connections I understand, but the others I don't.

Is there not a standard nomenclature in the electrical industry for one to refer to.

I need to find someone who has experience with industrial or telecommunication electrics.

pre65 · Post by **pre65** » Fri May 23, 2014 10:50 am

Here is the diagram from the spec sheet.

Dave the bass · Post by **Dave the bass** » Fri May 23, 2014 11:29 am

You might not need to actually connect anything to the other mystery pins Phil, the data sheet says the sense pins must be connected (and the load and mains supply I'd imagine too!) but not the other pins maybe?

PK120... that nots 120V AC i/p is it? Eeek!

DTB

pre65 · Post by **pre65** » Fri May 23, 2014 11:51 am

Dave the bass wrote:
PK120... that nots 120V AC i/p is it? Eeek!

DTB

Yeh mate, put twice the volts in and get double amps out. Ohns law innit.

No, it's 24v @ 5A =120va (or W)

Input is 115v or 230v switchable.

Me thinks you are right about the "other" connections.

pre65 · Post by **pre65** » Fri May 23, 2014 12:23 pm

I asked the seller, and got this reply.

"Its easier than you think!

Just connect sense + and - to either back of unit or if you want really good regulation connect to delivery point of supply

.Ignore IO connections(unless you need them) they are just open collector type pos and neg going indications of supply output for remote monitoring

if you use the units in parallel connect the sense wires to your terminal block where the parallel connection is made.

Only thing to avoid is firing up without sense wires connected (or reversed) as may cause damage."

Simples eh.

Paul Barker · Post by **Paul Barker** » Fri May 23, 2014 1:18 pm

What he means is it would go over voltage if you don't give it feedback. So connect the sense wires as he says to the output's at the very least or conncet them to your valve bass for better regulation. But don't levae them unconnected.

the rest you don't need to worry about.

audio-talk

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