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bjarnek avatar image
bjarnek asked

Orion-Tr DC-DC converter remote control details

I just found out about the "modifications" space and the question below probably belongs here. I didn't get a reply since yesterday in the general Q&A space.


I have a couple of Orion-Tr 12/12-9 isolated DC-DC converters on my boat that I would like to control remotely using electronics. To do this, it would be nice to know a bit more about how the remote control works. There are basically two wires that need to be connected on the device. This could of course be done with relays, but I prefer using transistors since they use less power and are more reliable. From the manual, it is clear that I need to manipulate the right hand wire.

The question is: To turn the device on, do I need to pull the voltage up or down on the wire? (probably up) If I need to pull it up, is 5 V enough or does it need to be pulled up to 12 V?

Unfortunately, I am not near my boat right now, so cannot do any experiments on this.

Orion DC-DC Converters not smart
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Mark avatar image Mark commented ·

Orion non smart

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bathnm answered ·

The answers are in the manual and datasheet.

4.4 Connection remote on-off
The recommended use of the remote on-off is:
a) A switch wired between the L-H pins (On-level impedance between L-H pins: <500kΩ)
b) A switch wired between (input/starter) battery plus and H-pin (on level: >3V)
c) A switch between the L-pin and (input/starter) ground (on level: <5V)
d) Isolated remote on-off cable e.g. controlled by a (mini)BMS

Note: Voltage tolerance L & H pin: +/- 70VDC

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bjarnek avatar image bjarnek commented ·

Thank you so much for your reply. My devices are not the smart model, so these details were not present in the corresponding manual. I would think that the non-smart models work in the same way, so I will go with this in my design.

It is quite clever that both pull up and pull down options are available.

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