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Old 10th December 2011, 02:55 AM   #1
dtaylo3 is offline dtaylo3  United States
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Default Meanwell SMPS and UCD180 questions?

Can I run two UCD 180 modules off of one Meanwell S-350-48 SMPS?

As numbers imply, it is 350VA and 48 DC volts, a good input voltage for the UCD 180.

Second question would be, what do I run into the the ground input of the UCD 180? Do I connect the Meanwell ground to the input ground of the UCD 180, or do I ground the UCD 180 to a chassis ground?
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Old 10th December 2011, 07:10 PM   #2
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first of all. is it 48VDC, +/-48VDC or +/-24VDC?
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Old 10th December 2011, 10:20 PM   #3
dtaylo3 is offline dtaylo3  United States
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+/- 48VDC
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Old 10th December 2011, 10:22 PM   #4
dtaylo3 is offline dtaylo3  United States
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...and with three terminals each of -/+ 48VDC outputs, but just one ground terminal.
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Old 10th December 2011, 10:40 PM   #5
dtaylo3 is offline dtaylo3  United States
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I also have a robust 650VA transformer that is made for hypex modules and a Hypex power supply module, but I do not have a soft start. it will not be here for two weeks.
I wanted to see how the SMPS would sound. I could go with the linear supply, but without a softstart do i risk blowing the amp modules?
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Old 10th December 2011, 11:41 PM   #6
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most UcD build run GND direkt from amp module to PSU.
you will not blow your amp without softstart. but maybe you will blow your main fuse on startup.
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Old 11th December 2011, 06:52 AM   #7
Baldin is offline Baldin  Denmark
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dtaylo
On the specification it is called Single Output .... so I do not think it is a +- SMPS .... the ground is for the input, Ground and not common ..... ...
http://www.meanwell.com/search/s-350/s-350-spec.pdf
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Old 11th December 2011, 02:40 PM   #8
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yes. these seems to be singel 48VDC.
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Old 11th December 2011, 03:17 PM   #9
dtaylo3 is offline dtaylo3  United States
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I will stick with the linear supply. Thanks for the responses.
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Old 11th December 2011, 09:30 PM   #10
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remember the softstart or you will sit in the dark
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