jhay

To answer myself, I changed my setup so I could run SolarPower and and snoop the serial port. To query, the command is QEBGP. The reply looks like this: QEBGP (+000 00 To set it, the command is ABGP+000, where the value is in Watt and it and it accepts positive and negative numbers. On my inverter, it seems as if all settings below +100 have no effect, so it was not useful to me to try and reduce the inverter's normal +-100Watt usage from the grid. At the end I played with a small bit of grid tie, 100Watt (using GPMP00100) seems to do it and the new Tshwane post paid meter, a HEXING HXE12-DL still seems happy.

Hi, Does anybody know what the serial commands are for querying and setting the "feeding grid power calibration" on the infini 3KW+ inverter?

Hi, Does anybody know what the serial commands are for querying and setting the "feeding grid power calibration" on the infini 3KW+ inverter?

It looks like a rebadged InfiniSolar 3kW plus.

Does the Axpert have filters like the InfiniSolar? My InfiniSolar started to reach 80, but when I opened it, I found that the filters on the outlets were clogged. After clearing them we are back in the 30s and 40s. It does seem to reach its highest temps in the early morning and late afternoon when there is almost no sun and it seems to try make something out of it.

The way I implemented mine was that the processor on the battery would turn off the FET after a while. So if the master wanted to keep the FET on, it would need to keep on sending the command. That also handle the case where the master die. Actually instead of just a plain on or off, I have the master send a PWM value to the battery processor, so it does not need to be 100% on. It can be anything between 0-100%. My implementation does use a ring, but with only 1 opto between every battery. About the reliability, my thinking was that there is no use trying to balance the rest if there is a problem with one, so the master should rather just send a cry for help if there is a permanent comms failure.

It should be possible to measure all 4 from a single processor. There is no inherent reason that you can't. Also you can "refine" the coarseness a few ways. The easiest is probably to take a few measurements and average them. For example if you want to measure up to 60V with a 10 bit ADC, you get 60 / 1024 = 59 mV per bit. If you take 16 samples and average them, you are closer to 59 / 16 = 3.5 mV per bit or with 32 samples you are below 2 mV. The other option is to use a voltage reference to lower the voltage that you want to measure. You connect the positive of the reference to the point you want to measure and its negative through an appropriate sized resistor divider network to ground.

I noticed that this pdf on the Voltronicpower web site have NRS-097-2-1 together with some of the European standards at the bottom of page 2. http://www.voltronicpower.com/files/ds/InfiniSolar_DS.pdf Does that mean that they just think they conform to the specification or did they do the certification somewhere? Does anybody, Mike maybe? have firmware that will allow you to select that for the InfiniSolar 3kW Plus? I know about the firmware on the Czech site, but do not have the courage to try it.

Tell a little more about the Tshwane side? What do you have to do or who do you contact?

Does the charging rate differ between solar and AC?

From this manual http://www.voltronicpower.com/oCart2/files/manual/InfiniSolar-2KW3KW-manual.pdf on page 41 it looks like by adding an appropriate meter that can talk modbus and a modbus in the Infini, you can achieve that. It would be great if someone can figure out what meter will work...

If you get less than what you expect, just read again and append? Most of the strings have a fixed length, so you know how many characters to expect.

QVFW (VERFW:00003.10 QVFW2 (VERFW2:00000.31