I think that with no HV you will only receive a "not ready" response
The Webasto doc notes that the HV MUST employ a pre-charge
According to post 16 on page 1 no interlock is required, but it is easy enough to try, just jumper the interlock pins on the HV connector

Part of what I like about EV-Olution's design is that there are status LEDs (and a start - stop button!) simply using MPU I/O pins I am confused by the nomenclature on the schematic, I see LIN_TXD and LIN_RXD on the MPC2004, which I think would be connected to TX1 and RX1 of the MPU, but those pins ...

I am in my own boat, sailing on the same sea... Part of the problem is the code on github is snippets of lots of other stuff for stm32. I think it needs instructions and library files to work, but how this relates ? Try asking someone who knows and you are likely to get an answer that you must alrea...

Chuluota, Florida

I am using the 2p8s modules, the 16s are probably similar. Orange is the cell taps and yellow is the temp sensors. Just start at one end with a probe on you VOM and find the other end, where you will read the total pack voltage. It is then simple to go down the line as each cell (probably a top row ...

I know, you are right... just a bit swamped with "one more thing" ism.
I will view some Arduino programming videos tonight

I want to control a PTC heater over LIN (see https://openinverter.org/wiki/Webasto_HVH50 and https://openinverter.org/forum/viewtopic.php?t=1565 ) I have found a simple to build controller based on an Arduino (see https://ev-olution.yolasite.com/nissan-leaf-ptc-heater-aftermarket-lin-controller.php ...

Not being a software engineer, I am hoping to locate a dedicated LIN controller that I can use to control the HVH50. All I need is something to send the code to turn this on as if it was controlled by the Analog Switch operation outlined in the manufactures datasheet (basically 80% temperature and p...

Yes, and i would gladly add this essential information to the Webasto wiki if I could figure out how.
I just think the topic of connectors is so important it deserves a wiki of it's own!

I received a reply from TE, the information and instructions are here: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Specification+Or+Standard%7F114-13259%7FF%7Fpdf%7FEnglish%7FENG_SS_114-13259_F.pdf%7F2103177-1 There are several HV and LV connectors required in...

Could someone explain how to obtain the complete HV connector for this unit? I can find the Tyco HVA280 connector part # 2103177-1 easily, but this does not include contacts, interlock or seals. The Tyco website is difficult to use as there are no references as to which contacts or accessories work ...

Thanks for the informative reply!
Does the frequency of the PWM signal act as a "temperature" control, and by changing the frequency on can set the compressor on-off cycle thereby controlling the AC temp?

Any luck getting the Tesla AC compressor working? I am hoping to find a turnkey solution for implementing a high voltage compressor with an existing AC system, seems possible. All it has to do is take a cabin temperature input and cycle the compressor to achieve a desired temperature setting. Under ...

Has anyone got this working?
I am still at the test bed stage, got the car (finally!) and working out the frame adaptions.
I get no response from engaging the Cruise Control or the Brake Pedal switch, I have tried them both with on /off & momentary switches.

Thanks!

Should there be a ground strap from chassis to the SDU? Does anyone know how this is configured on a factory car? It seems odd to not have a safety ground... of course it would probably need to be lifted to connect to the inverter board via wifi! I measure no continuity between the 12 volt ground on...

Rear SDU test bed so far: I have plotted the pot 1 values (822 to 4395) from my Subaru e-pedal and entered the values, rebooted & refreshed and it reads the same. I have four 12 volt 100 ah batteries in series for 48 volts feeding the contactors, and a 650 watt 120 volt light-bulb in series with...

Got it, works a charm

Thanks!

I am looking for instruction on how to get the spot value page to work, as I can not find anything on this by searching. I have the test bed all set up, and wifi is working. I can read values, change them and save (flash? save & flash seem to be used interchangeably in posts, adding to confusion...

Aloha!
Does anyone know this torque value (bolts under the orange cover that connect the inverter cables to the motor cables?
Getting ready to try this thing...

Thanks!

Sorry if this has been covered, my searching does not find it!
I can find it for Model 3, model S, FRONT SDU...
Thanks

I purchased this in England as an ideal conversion candidate and had a contract for RORO transport to the USA, when it arrived to be loaded on the ship the tow truck driver told the ship loading crew that the brakes stick (they do not, he couldn't figure out how to operate the hand brake!). They rej...

That makes sense, I will use a light-bulb (120 volt 100 watt)
Any recommendations on the pre-charge resistor value? I see posts of people using anything from 25 to 100 ohms
I just happen to have a 35 ohm 100 watt lying around...

I now have the O/I board installed in the SDU and I am setting up the test bed. I have searched for the value of resistor to use for current limiting on the motor battery B+ (for test purposes only) and can only find "use a resistor or some heater wire". I understand that it is critical NO...

Am I correct that the BRAKE SIGNAL (pin 10) is the Regen control input? Does it operate opposite of the THROTTLE signal (as in +5V = no regen & +5v = full throttle)? What does the BRAKE LIGHT SWITCH (pin 15) do? Is it just informing the O/I board that the brake pedal has been pressed? Does this ...