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bonie-wanda avatar image
bonie-wanda asked

No grid meter: Warning and Passthru

My installation went into Passthru mode: There is a warning:

No grid meter: Warning

I have rebooted the Venus GX bus no luck.

Set:

  1. 2x Multiplus II-48v-230v-300VA;
  2. 1x BlueSolar MPPT 150/35
  3. 1x BlueSolar MPPT 150/45
  4. Venus GX
  5. 4x PylonTech US3000
  6. ET112 single phase Grid Meter

I looked for solutions on the Community Portal but have failed.

Can you please assist me.


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Venus GX - VGX
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4 Answers
duivert avatar image
duivert answered ·

hi, how is your grid meter connected to venus?

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bonie-wanda avatar image bonie-wanda commented ·
it is connected via a UTP cable, with RJ45 on the grid meter side and converted to a USB on the GX side. I just have an installer come to recheck the connections of the cable and all seems good. It did not help.
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duivert avatar image duivert bonie-wanda commented ·
exactly what @Jason - UK already answered, looks like a bad connection, beter use a good quality rs485 to usb converter, (the victron version is also sold from other brands using the same FTDI chip) and best is to connect the rs485 connection on the screw connection of ET112 instead of rj45
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Jason - UK avatar image
Jason - UK answered ·

@Bonie Wanda That sounds to me like a bad connection, either on the RS485 wiring or on the USB side. I had the same issue for a while. It turns out I had too many USB devices on the USB hub. When I plug the RS485toUSB directly into the GX device, issue fixed. I also had an issue where the connection to the ET112 wasn't great causing breaks in the data flow.

As a short term solution, I removed the grid meter form the list of devices but obviously I lost the ability to supply the loads before the Multiplus unit but it did get the Multiplus inverting again until i fixed my wiring.

Its worth noting, sub-standard RS485 to USB devices will give you no end of trouble like the issue you are experiencing. I only use Victron RS485 to USB now for that reason.


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bonie-wanda avatar image bonie-wanda commented ·
I hear you @Jason - UK . I have asked the electrician to source me a solid RS485 to USB cable so that I can eliminate any connection issues. The wires are delicate and easy to break, so we were joining using a chock block. I even did the joint directly but it is not helping. I will put the choch block back.
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bonie-wanda avatar image bonie-wanda bonie-wanda commented ·
I need about 20m of RS485 to USB which is why I had to join. They did not have a long one back in the days.
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duivert avatar image duivert bonie-wanda commented ·
20 meters is possible with good shielded wiring (best is digital signal cable 110ohm) i used to have about 35m in between
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bonie-wanda avatar image
bonie-wanda answered ·
  • Venus GX still on 3.3
  • Upgraded the ESS assistant with the MK3;
  • Upgraded the MPPTs from 1.61 to 1.63

Changes later in the afternoon after upgrades and re-enabling External Grid Meter (in ESS menu)


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I will monitor into tomorrow and feedback.





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bonie-wanda avatar image
bonie-wanda answered ·

Since upgrading the firmware on the MPPTs yeterday, it seems to be working normal now.


Thank you for your inputs.


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