openinverter forum

bmwx5projet

I don't quite understand your issue yet, so will just give you general info
- Pin 3 becomes active as soon as you power up the drive unit - if less than udcsw/2 V are measured after 5s it will drop
- Pin 6 becomes active as soon as you give the start signal (12V, pin 23) AND udc>udcsw

In short ...

bmwx5projet

In short, pin 3 and pin 6 are being activated since I started without activating the 12V of pin 23

bmwx5projet

ok, this is what happens, I made the connection according to the diagram, when I connect start, the card is activated, negative relay and precharge, which is what should happen right. but the pin 6 signal is also being activated and the precharge stays activated

bmwx5projet

hello, forget the two messages, leave the inverter disconnected for a moment and the signals are already working. but there is a problem when activating the card the signals go out through pin 3 and 6 at the same time and the precharge relay is not deactivated. However, when I disconnect the high ...

bmwx5projet

Another question, apart from the lights on the card, shouldn't the inverter turn on some indicator lights to know that it is activated?

bmwx5projet

Hi today i tried to crank the motor and i was not successful i tried using the web button as the throttle negative signal is not getting to me after all are ok and the contactors signals are also getting through and the voltages Also if this doesn't work for me. One question: must the encoder be ...

bmwx5projet

Hola, hoy trate de hacer girar el motor y no tuve éxito, lo intente usando el botón de la web, ya que la señal negativa del acelerador no me está llegando después todas están bien y las señales de los contactores también están llegando y los voltajes también silo esta no me llega.una pregunta: el ...

bmwx5projet

I dared to reconnect the connectors one by one and measure the voltage and the drop that occurs when isense is connected. If left unconnected the voltages remain constant.

bmwx5projet

I'm sorry, I hadn't understood the instructions, but yes, I already removed the connectors, just leave the ampseal connector and 5.35V comes out through L1 and 5.35V arrives at LD1 and comes out of LD1 3.3 is correct

bmwx5projet

Hello, I started doing some follow-up tests and this is what I saw, 12v arrives at lC1 but 4.1 comes out for L1 and 3.4V comes out of L1. what I can deduce is that IC1 is the one that must take out the 5 V to L1 which is an inductor. what do you think?

bmwx5projet

ok, i'll do it and let you know. How can I get the schematic of this V5 card, the one on the page is the V4B. and I'm using it as a parameter to review. but it's not exactly here.

bmwx5projet

Yes, but before that is a 5V regulator that supplies some parts of the circuit and also the throttle pedal. So 5V goes into LD1, 3.3V comes out. I had you measure across the INPUT and that was 3.4V, too low.

ok, I understood, then what can it be, I also have the problem that the signal does not ...

bmwx5projet

A bit of drop is normal, but should be more like 0.5V. Something is loading down the 5V rail.
I will also check if something is wrong with the 5V reg
EDIT: checked on a board here, it produces 5.3V

- Can you check again with all BUT the ampseal connector disconnected?
- Does anything heat up ...

bmwx5projet

ok i will do a review and let you know

bmwx5projet

johu wrote: ↑Tue Nov 08, 2022 10:17 pm Ok, so the 5V regulator does not produce 5V.
Now what is the voltage on C6? What is the feedback voltage, i.e. across R33? What is the total current draw of the board? Can you post a high res picture of your board? Where did you obtain the board?

I was wrong this is a V5

bmwx5projet

johu wrote: ↑Tue Nov 08, 2022 10:17 pm Ok, so the 5V regulator does not produce 5V.
Now what is the voltage on C6? What is the feedback voltage, i.e. across R33? What is the total current draw of the board? Can you post a high res picture of your board? Where did you obtain the board?

bmwx5projet

the voltage on C6 measures 11.76 the strange thing is that the battery has 12.7V and why does it drop. buy the card directly at open inverter Shop. I will send you the photo of it, it is a V4B, and I have also noticed that all the points of the ampseal connector output 5V, I only have 3.4

bmwx5projet

johu wrote: ↑Sun Nov 06, 2022 6:37 pm Looks like the PCB picture hasn't made it into the wiki yet:
image.png

Are you getting 5V between pin 1 and 3 of LD1?

Greetings, I measured the voltage is 3.4V

bmwx5projet

johu wrote: ↑Mon Nov 07, 2022 8:01 am Can you please answer the question I asked you instead of just repeating what you said before...

Greetings Johu, now I'll be at work, when I get back I'll see if the 5V is there and I'll tell you, if it's not, what's next?

bmwx5projet

the resistance you're talking about doesn't matter in this situation.
Johu asked you the right question. Don't you want to answer it?
Or do you really not need help in solving the problem and you just decided to troll everyone with the same description?
Also, you still haven't attached your ...

bmwx5projet

there is a link in the inverter settings browser via Wi-Fi: download the settings file. the browser will save the parameters file to the params.json
here, attach it here

Greetings I am trying to start my Tesla LDU with the loading and precarious Nissan Leaf relay system this has a resistance ...

bmwx5projet

Greetings this trying to start my Tesla LDU with the load and precarious Nissan Leaf relay system this has a resistance of 30ohm and 40 watt, but the unit does not start me I do not know if it is by the Nissan system, but pin 6 is not activated to activate the main relay, also pin 12 of accelerator ...

bmwx5projet

when I get back home I'll do it, I'm away for the weekend, I'll let you know or I'll write to you to help me with this, it's a very nice project but when it comes to this type of technology I'm not that skilled.

bmwx5projet

But it is that the card is confirmed, just change the parameters that they tell me to do the test. what is that file?

bmwx5projet

johu wrote: ↑Sat Oct 22, 2022 6:04 am Do you have access to the wifi module? 3V on throttle output sounds like a 12V supply issue

yes, I have access to WiFi and the battery has its 12v but 3 come out of the inverter

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