5500PS supply current

Just wondering if there's a reason why 350ma was chosen for the 5500PS? It can make it a pain when you have a network needing close to 2A but by adding 5500PS always end up with too much juice, or not enough.

Would a multiple of 200ma (same as relay/dimmer output units with built in power supply) make more sense? Maybe 400ma? That way if you're at 1800ma and need extra you can just swap an output unit to non-powered and get 5500PS without even worrying about the 50ma curveball.

Cheers,
Matt

 

I agree. I got stuck with the same issue once when all power supplies were seperate power supplies needed 1800ma but could get 1750 or 2100 using individual power supplies.

 

The goal for the stand-alone power supply was 400mA, which divides nicely into 2A. 200mA for integrated supplies and 400mA for stand-alone power supplies. Unfortunately due to thermal limitations it was wound back to 350mA fairly early on in it's development.

It could be de-rated slightly to 333mA so that it divides nicely into 2A. It's not as trivial as just a product label change but it's still fairly straightforward. Would that be of interest?

If you're wanting to use as many stand-alone power supplies as possible then you can get to 1950mA by adding a unit with an integrated 200mA power supply to the network.

 

What about the possibility of a introducing second 200ma power supply as well as the 350ma if 400ma is just not possible? Seems a rather expensive way of getting more power on the network by adding a redundant powered output unit. (handy as that may be!)

My problem wasn't that 350 doesn't divide evenly into 2A, but that in some situations it can become difficult to get a multiple of 350ma up to the required current, whilst keeping under 2A, when there's already output units on the network.

Cheers,
Matt