Longer cable for my epever mt50

[missoo]

Hello everyone,

I need a longer cable for the remote meter mt50 of my mppt epever. On the manual they say to get a CC-RS485-RS485-200U-MT.
But I can't find any with this model number on internet, at least in Europe.

Do you have any idea which cable could work for this use ?

Thank you for your help

 

[snoobler]

That specific cable is only 1m long.

Amazon says this works:

Amazon.com

Gut says a standard ethernet cable will work.

 

[rickst29]

If a standard Ethernet cable DOESN'T work, then it might also be a "standard" crossover cable. If not, then they wired the RJ45 pins in some weird way (and they have many alternative designs, if they did that.) Can you see the WIRES within the RJ45 connectors on the short cable?

If you can see the wires, you could custom-build one new end from a standard cable. But I've great a GREAT alternative for you: Whatever "crossover" wiring they used is entirely done by the two connectors which already exist. I'm willing to guarantee that you can merely add a standard RJ45 union connector (a cable "coupler") to either end of the proprietary cable, connect a NORMAL shielded Ethernet cable as your "extension", and the end of your extension will work perfectly (Between the SCC and the MT-50).

 

[missoo]

I will send a picture of the RJ45 connector later because I don't have it with me now. But I found these informations in the manual. Does it give you any idea of which cable it could be ?

 

[snoobler]

The diagram indicates it's a straight through cable. Standard ethernet cable is straight through.

 

[missoo]

ok cool ! No risk testing a regular ethernet cable then ? Too scared to damage my devices!

 

[rickst29]

Yeah, that's a weird pinout, containing duplicated pins of a USB-1 interface. Let them do their thing, just use one of these everyday couplers" plus a "normal" Ethernet cable in order to get your extra length: https://www.amazon.com/Internet-Connectors-Ethernet-Extender-Connector/dp/B08HMNB7DW/

 

[snoobler]

I think the danger is in connecting the MT-50 to an actual ethernet port on a computer/switch/router, not between approved devices.

 

[missoo]

Cool ! Thanks rickst29, it's a clever idea
I guess the signal would be the same even if it's not the same kind of cable ?

Thanks for your help both of you

 

[rickst29]

Cool ! Thanks rickst29, it's a clever idea
I guess the signal would be the same even if it's not the same kind of cable ?

Thanks for your help both of you

Yes. Their picture implies that regular straight-through Internet is correct (as snoobler says). But my scheme assures that any undocumented "wire-flipping" they did inside will be preserved through your extension.

 

[JoeHam]

I’ve used multiple different generic ethernet cables on a MT-50 with two different epevers.

No problems.

 

[missoo]

Just a quick update. Before asking on the forum I wrote to epever. They confirmed today that indeed we can use a regular ethernet cable. Thanks all

 

[BenCos18]

Hello everyone,

I need a longer cable for the remote meter mt50 of my mppt epever. On the manual they say to get a CC-RS485-RS485-200U-MT.
But I can't find any with this model number on internet, at least in Europe.

Do you have any idea which cable could work for this use ?

Thank you for your help

It's a regular rg45 to rg45 network cable....Any should work just make sure it's a straight through and not a crossover though