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I try to connect a energy meter with the mp 2 gx, i used an original victron usb to rs485 cable, but it did blow the usb part. Now i read that i probably need an isolated converter, but why does victron sell those cables for it if they just destroy themselves?
And what converter do i need exactly? I did buy the original victron cable and another one, but both don’t work.
Hi
RS485 Converters break from time to time, claim via victron eorder https://eorder.victronenergy.com/customer/login/?next=/customer/home/ or via vendor.
third Party RS485 Converter must include FTI chip for Victron/Carlo Gavazzi Meters to work.
Tested: https://www.amazon.de/gp/product/B07Z1V5WQS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
The normal end user has to contact his seller for a replacement.
What energy meter did you connect, and how?
Rj45 or wires?
Et112 with wires. That is how my converter now looks like.
ET112 directly wired to a victron RS485/USB converter is the normal way of installing, i have multiple wired like that
This is how it is wired.
So you say it should just work with those victron rs-usb?
I have another one from victron, but i do not want to blow that one too, want to be sure it will work.
I never had a problem like that but I see you forgot to install the cover for the AC terminals, did you maybe touch the live or neutral wire with one of the RS485 wires by accident?
I connected the other usb-rs and the meter doesn’t show up.
That happened with the last lead too, the converter doesn’t show communication lights.
Last time i thought i give it some time, and then it will work. But that made it burn the converter.
If i touch the converter, it doesn’t get hot, but that was with the last one also, after a while it did get hot i guess, and found the mess shown above.
Any thoughts on how to get my et112 to show up on mp gx?
I found another post about it, that told me to connect the converter to a pc and change something in the name.
But when i plug it in a pc, it starts to get hot fast, and the cable isn’t recognized.
Are both of my cables faulty?
Or am i doing something wrong?
You might have killed the second adapter as well by connectig it without checking the conditions.
Maybe the Energymeter is faulty and the RS485 port has a too high voltage output. Or something else is not correct.
You could check the voltage level at the RS485 Pins of the energy meter. It should not exceed ~15V (as far as I remember).
Before checking the possible root causes, you should not connect another RS485-USB adapter. The outcome will, most probably, be the same.
Connecting it to the USB port itself, should not cause any damage, so I would guess the problem is on the RS485 side.
I contacted the seller, and they did send it through to victron. If i know more, i write it here. If there is someone else who has any ideas, please share them here.
Interesting, let us know what is the outcome.
