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TC charger - keeps saying "wrong communication"

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K

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Discussion Starter · #1 ·
I have wired up my 3.3 KW TC charger - I did not want CAN but that is what I( was sent - the manual says CAN communication optional -

Anyway I get the red-green-red which means "wrong communication"

I see the bit that says hook the enable pin to the 12 volt positive pin but that has made no difference - I even added the resistors like it shows in the picture - NO joy ???

I have a meter on the dashboard that can switch the charger off at a set voltage point but its not going to do much good if it wont turn on ?

Do I have to buy a new charger ? The guy who sold it to me (EV Lithium) is a criminal and a fraudster so I wont expect him to help

this is the link to the manual - https://1drv.ms/b/s!AmbWDB9AS-tJhO4TjUSuuaA9-5bfNQ
 
Coulomb

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#2 ·
kevinjclancy said:
I have wired up my 3.3 KW TC charger - I did not want CAN but that is what I( was sent... I get the red-green-red which means "wrong communication"
Click to expand...
So are you sending it CAN packets once per second or so? CAN models can't do anything except whinge about comms if they don't see regular CAN packets.

At least, that's how the older models worked.
 
P

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#3 ·
Yes, I agree! The CAN enabled chargers are waiting for CAN packets to give them a voltage and a current. You can build a CAN module with hobby electronics pretty easily. The instruction may even be on this forum. If not we can walk you through it.
 
P

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#4 ·
pdove said:
Yes, I agree! The CAN enabled chargers are waiting for CAN packets to give them a voltage and a current. You can build a CAN module with hobby electronics pretty easily. The instruction may even be on this forum. If not we can walk you through it.
Click to expand...
Here is the thread I was talking about scroll down to post #28 by Coulomb.

https://www.diyelectriccar.com/forums/showthread.php?p=667802#post667802

Also, I forgot. The charger doesn’t have a CAN chip in it. It uses this option-coupler configuration and a CAN dongle to convert it. so you can build the circuit on this thread and won’t need CAN at all. Coulomb even posted the code.

This is assuming you have the old design and not the new grey chargers they make now. The old ones are black.
 
K

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Discussion Starter · #5 ·
My charger and the DC to DC converter will not work without CAN - I do not have any CAN ability - I was planing to use my fancy Mypin Coulmeter that can be set to shut off the charger at a preset point. I have no idea why anyone would need a CAN controlled DC to DC but I ended up with one and both the charger and the DC will be totally useless to me. I am happy to pay someone to set up a simple device to send the on off signal to these 2 devices - if you or anyone could help me, I and my money bleeding car, would be so greatful
 
J

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#6 ·
kevinjclancy said:
I have wired up my 3.3 KW TC charger - I did not want CAN but that is what I( was sent - the manual says CAN communication optional -

Anyway I get the red-green-red which means "wrong communication"

I see the bit that says hook the enable pin to the 12 volt positive pin but that has made no difference - I even added the resistors like it shows in the picture - NO joy ???

I have a meter on the dashboard that can switch the charger off at a set voltage point but its not going to do much good if it wont turn on ?

Do I have to buy a new charger ? The guy who sold it to me (EV Lithium) is a criminal and a fraudster so I wont expect him to help

this is the link to the manual - https://1drv.ms/b/s!AmbWDB9AS-tJhO4TjUSuuaA9-5bfNQ
Click to expand...
What BMS are you using? Several have the ability to control the Tc chargers over CAN bus. That being said, I ran into the same thing with the 3.3kW Tc charger. When they say CAN is optional, they mean you have the option of ordering with CAN and using it alone or of ordering with the enable relay and using that option alone. Very frustrating, to say the least. I went through the same rigmarole directly with Tc.
 
K

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Discussion Starter · #7 · (Edited)
My "BMS is a bit unorthodox but effective - it is in 2 parts - The balancing is done by an "active balancer" it works great but only can be accessed by android phone - it does not control the charger - I have Mypin Coulometer - http://store.evtv.me/proddetail.php?prod=coulometer -

It is accurate and is able to shut off the charger when it gets to a set voltage - it is wired to a relay that runs on 12 volts
 
J

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#8 ·
kevinjclancy said:
My "BMS is a bit unorthodox but effective - it is in 2 parts - The balancing is done by an "active balancer" it works great but only can be accessed by android phone - it does not control the charger - I have Mypin Coulometer - http://store.evtv.me/proddetail.php?prod=coulometer -

It is accurate and is able to shut off the charger when it gets to a set voltage - it is wired to a relay that runs on 12 volts but can switch off AC power
Click to expand...
You might be best served selling your current charger or insisting on a return, as much as it sucks, and then buying a standard enable charger. You can get the 3.3kW Tc charger direct from them through Greenstore on Aliexpress. It's considerably cheaper, too.
 
K

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Discussion Starter · #9 ·
Tony Wang from Evlithium sold me the DC to DC and the Charger he also sold me a BMS which never ever arrived - I paid $600 usd for the BMS - he is still advertising to them and I told Alibaba and they said it was a "dispute" because he sent some of the goods - if he had sent nothing then he would be kicked off the site - WHAT??? you heard right -
 
P

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#10 ·
No one can help you until you tell us what you have. Model number of charger and Dc To DC and a picture would help.

The old TC Chargers didn't use can they use some special interface the new grey ones have CAN built in.

The old black one came with a CAN module that plugged into the round connector on front.

So.... what do you have?
 
P

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#14 ·
kevinjclancy said:
I purchased both the TC - Charger and TC - dc to dc converter less than 6 months ago - this link is to my charger but it is not the supplier I purchased from - https://www.aliexpress.com/item/32706263937.html

The DC to DC - https://1drv.ms/b/s!AmbWDB9AS-tJhaVEedd4OLDWSISqXQ
Click to expand...

Ok, that helps but the model number is what we need.


Looks like the charger is an HK-J series 3.3Kw Charger but hard to tell.
They make several models but they all work the same way.

Charger Model
48V40A 18-68VDC 40A HK-J-48-40 HK-J-H66-40
72V40A 25-99VDC 40A HK-J-72-40 HK-J-H99-40
96V32A 34-132VDC 32A HK-J-96-32 HK-J-H132-32
144V23A 50-198VDC 23A HK-J-144-23 HK-J-H198-23
312V10A 110-440VDC 10A HK-J-312-10 HK-J-H440-10
540V06A 170-650VDC 6A HK-J-540-06 HK-J-H650-06


Looks like connector 3 has:
Pin A - CANL
PIN B - CANH
PIN C - CANGND


All you need is an Arduino with a CAN Shield and then download the code from Here: scroll down to post #28 by Coulomb.

https://www.diyelectriccar.com/forum...802#post667802


If this is too complicated for you then go to EVTV their Tesla Battery Module control kit will operate this charger. Probably the DC to DC controller as well.
 
P

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#16 · (Edited)
ivan_ki

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#20 ·
pdove said:
No one can help you until you tell us what you have. Model number of charger and Dc To DC and a picture would help.

The old TC Chargers didn't use can they use some special interface the new grey ones have CAN built in.

The old black one came with a CAN module that plugged into the round connector on front.

So.... what do you have?
Click to expand...
I have the same issue. 3.3KW On Board LiFePO4 Battery Charger - my charger from EVE. As for BMS, I have not BMS with CAN BUS. What is the simpliest way to resolve the problem?
 
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