[amvall]

Forgot to say it's now outputting 89v instead.
I believe it's not related to the oem firmware as the behaviour changed accordingly to elteks specs exept for voltage control, but I guess I should read our all parameters from the config and make sure all seems alright.
A friend told me about how to switch firmware, Have you got any specific questions about the blown charger?

 

[z_power]

I "bricked" my charger (the same kind as bigmotherwhale's) by sending random CAN messages, it stopped communicating (does not acknowledge any msg at any bus speed). I must have hit some sensitive identifier - should start playing lotto maybe? Now I'm looking for ways to restore original behaviour.
Part no. 241121.000, TBCM 360/3000HE, Rev. 2.1, sw: 1.00/1.00

 

[Ryp]

I "bricked" my charger (the same kind as bigmotherwhale's) by sending random CAN messages, it stopped communicating (does not acknowledge any msg at any bus speed). I must have hit some sensitive identifier - should start playing lotto maybe? Now I'm looking for ways to restore original behaviour.
Part no. 241121.000, TBCM 360/3000HE, Rev. 2.1, sw: 1.00/1.00

z_power: Did you get the "bricked" charger working?

 

[z_power]

z_power: Did you get the "bricked" charger working?

Unfortunately not...

 

[arber333]

I have comunication! send the charger serial number to frame 351 and it will communicate for a second, it will send back data.
I believe this is the charger login that Athlon originally suggested this on the brammo forum.

getting close now.....

Edit

Charger is working! its not little endian its big endian took me a while to figure that one from the data. send this:

351 10 10 71 12 58 09 (enter your serial number after 351 once and you should recive a load of values all starting in D9 which i think is the individual charger adress 217 )

then this immediately after repeated every 900ms

352 D9 01 03 E8 09 C4 00 0A

and you will find the charger will turn on at 250 volts

Happy Days

Hi i have Volvo charger P/N 30659929

Can you tell me which number is S/N?
I can see two numbers on a Volvo label
2809750
T14084100323

tnx

Arber

 

[bigmotherwhale]

I dont think the CAN protocol is the same as the version you have.
The ones i have are not from a Volvo and are not IP67 rated.

T14084100323 is probably the serial, have you tried connecting the CAN bus to a PC and sending some commands?

you could try here for the protocol: http://www.rec-bms.com/datasheet/EVPowerchargerCANprotocol.pdf

 

[arber333]

I dont think the CAN protocol is the same as the version you have.
The ones i have are not from a Volvo and are not IP67 rated.

T14084100323 is probably the serial, have you tried connecting the CAN bus to a PC and sending some commands?

you could try here for the protocol: http://www.rec-bms.com/datasheet/EVPowerchargerCANprotocol.pdf

Yes i have the protocol thank you and i sent data like it is required. Without response. There is not even a packet going my way. Does someone know how to at least get CAN going?

Would it be possible Volvo operates on different baud than Eltek?



tnx

 

[bigmotherwhale]

Just change the baud rate to some common values and give it another go,

Standard baud rates are 125 kbit/s, 250 kbit/s, 500 kbit/s and 1 Mbit/s

I would have thought you would have an announcement from the charger.

Check polarity for the CAN lines too.

 

[arber333]

Hurah! I got a response.
It is a bit strange, but i had to configure my canalyst II to bridging CAN1 and CAN2 channels. I dont know why but when i confirmed i instantly got a message train from adress x308 with data 02FF 23 03 10 84 40 01
So i gave it your message with adress x2FF data field 01 03 E8 09 C4 00 0A

I can measure 320Vdc on one end and another 320Vdc on the other red wires. I thought those thinner wires were line to charge 12V battery. Does someone know what those are for? I see only Volvo charger uses them.

It is late. Next time i will try 360Vdc and connect full Ampera battery to charger.

A

 

[bigmotherwhale]

Great, glad you got it working, can you post a picture of the other thin wires? Mine only have mains input DC out and CAN.

 

[arber333]

Great, glad you got it working, can you post a picture of the other thin wires? Mine only have mains input DC out and CAN.

Pic of the charger... Notice thin red wire pair. I thought it was 12V.

 

[bigmotherwhale]

I think its an auxiliary power output that is used inside the vehicle for the fluid heater or resistive mats for cold weather charging.

Quality little units these elteks, i couldnt resist buying a couple for my project, but lack of funds and time means its on hold for now, what are you using it for? Have you got a vehicle in mind to convert?

EDit: Actually i think its more likely to be a high voltage supply for driving the compressor unit for cooling the pack as a resistive element would work fine on AC current.

 

[arber333]

I think its an auxiliary power output that is used inside the vehicle for the fluid heater or resistive mats for cold weather charging.

Quality little units these elteks, i couldnt resist buying a couple for my project, but lack of funds and time means its on hold for now, what are you using it for? Have you got a vehicle in mind to convert?

EDit: Actually i think its more likely to be a high voltage supply for driving the compressor unit for cooling the pack as a resistive element would work fine on AC current.

Hm... it seems logical. Compressor consules little if there is no other consumers and really what is the worst enemy of Li-ion cells? Their own residual heat dissipation. Next experiment will go towards changing charger operating baud rate. Do you think if i request communication at 125kbps it will use that next time it weaks up?
Si i will send:

CANid 03 03 data 00 00 01

And reboot charger

 

[rossasaurus]

Re: eltek charger canbus communication

I am using PCAN-View and I believe you can transmit one set of instructions, then send another and they will run concurrently. Discovered by accident of course. Still don't have my charger functioning though.

Hello Athlon
Glad to have you here.

I actually called eltek and they were helpfull but the guy who i spoke to didn't know what i was on about and has sent an email to someone in germany, we will see if this gets anywhere.
I also requested a copy of "eltek powercharger tools" which can control or reconfigure the charger from windows. fingers crossed.

I believe this charger is communicative with 29bit not 11. it will only work on extended frame.
in the eltek document it says that "TBCM" version is 29 bit and that seems to be true as that is what i have.

would the frame address be any different with a 29 bit identifier?

What i would like to do is automatically send the same charger message on different frame ID automatically and record a response to see what address the charger is on. does anyone know if this is possible to do? the sodftware i have with my usb can dongle doesnt seem to have that option, is there any software that does? i dont want to enter hundreds of numbers manually...

 

[rossasaurus]

Re: eltek charger canbus communication

Could someone please give a brief summary of steps for accessing the .000 Eltek PowerChargers?

I read:

500kbs
8 bits

Send:
ID=351 followed by 12 Digit Serial Number (not converted to Hex)
for instance 351 10 42 71 10 09 27 (for serial#104271100927)
Extended Format
Repeat <100ms
Should spit back my ID, correct?

thanks
Ross

PCAN-View set at 500kbs, 8 bits

 

[bigmotherwhale]

Yes that looks ok however im not sure whether 8 bit is correct.
It should announce itself every second whether you have sent anything to it or not, if you are not receiving messages from it check your settings.

 

[rossasaurus]

I appreciate your reply BMW,

Oh, I hadn't realized Charger should send without receiving a request first.

So, is 351 the apparent ID for these chargers? or is that an ID that any chargers on bus should respond to, a request for reports?

I'm assuming the mfg would have used the same ID for all the chargers going to Think or BMW etc.

thanks for your time and attention, will keep plugging away at it.

Ross

 

[SeanAdrian]

As I mentioned before the charger is a 50v-122v version, and i am quite sure it most have been programmed for brammo. Got some more documentation yesterday and was actually able to switch back from oem-firmware to eltek-firmware.
By first unlock configuration with; id 303 data 01 16 F1 E2 D3 C4 B5 A6
following by; id 303 data 010101 within a second follwed by a reboot.

This should be working for models; 241121.010/020/030 and proved from mine (211121.111) as well.
For the charger 241121.000 you can switch between firmware's using dip inside.

So now my charger responds on id's 2ff and 300 and i can turn it on and off using control byte 0 state and 1/2 power and it responds by sending serial number every sec and status/error 5 times/sec.
Only problem left is that it doesn't respond to voltage control. Guess i shouldn't need a load to test voltage.

Hi amvall, I opened up my unit and noticed there were two dip switches. Would you be able to say what position they should be in to reset to Eltek ?
My unit is a 0.030 but has 2 dip switches inside

 

[SeanAdrian]

Any more details on this info? I noticed a switch inside my "toasted" charger, could give it a try.

Hi z_power, I know this thread is dated, but would you have photos of your switches ?

 

[urgi]

HEUREKA WORKING - I can enable on bench without battery Bit 7 RTR off D0=01 time 1000ms




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