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Normally Open DC relay

JeffG

New Member
Joined
Apr 21, 2021
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Hey all,

I am upgrading to all victron components in my fifth wheel. I have pulled the old Magnum Inverter, the Zamp CC, the FLA batteries, and the last piece is a device that I have never heard of.....A Xantrex Freedom Intelligent power manager.

I completely understand the AC side of it, but it has 4 DC relays that are confusing me. In my rig only two are being used and both are connected to the Normally Open contacts of the relays (see pic below). I tried chasing the wires but they disappear in the wall, any idea what these two relays may be controlling. I want to get rid of this but unsure what I need to do with these wires.

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Normally open means they default to off when not activated. This is the regular/standard relay terminal. I'd assume you have some load on the other end of the wires. Power one up and see what comes on?
 
Normally open means they default to off when not activated. This is the regular/standard relay terminal. I'd assume you have some load on the other end of the wires. Power one up and see what comes on?
I’m assuming in order to power it up I’d put 12vdc positive on the orange wire and negative on the brown wire?
 
Normally common is power in and the NO and NC terminals are power out. Relays are just switches, they connect the common to one of the other terminals.

They can also switch ground, but that's probably not how the RV is wired.

Can you hook up the equipment and test how the thing functions? With a volt meter, measure the voltage on the common, NO, and NC terminals.

Lacking that, take a swing at connect power to the NO terminal, that should go straight to the load.
Be advised, there's a chance you let the smoke out. This should have been figured out before things were torn out.
 
Normally common is power in and the NO and NC terminals are power out. Relays are just switches, they connect the common to one of the other terminals.

They can also switch ground, but that's probably not how the RV is wired.

Can you hook up the equipment and test how the thing functions? With a volt meter, measure the voltage on the common, NO, and NC terminals.

Lacking that, take a swing at connect power to the NO terminal, that should go straight to the load.
Be advised, there's a chance you let the smoke out. This should have been figured out before things were torn out.
Thanks for the insight, I will do some more troubleshooting and let you know how it pans out!
 
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