[Figgeman]

I have a wall box that can deliver max 11kW. I never see more than 2.6kW on the wall box display.
Is this normal?
If not - what’s wrong?
What can be done about it?
Thanks.

 

[Thebriggie]

The draw of power is controlled by the control pilot link which happened to be the same link that was probably causing you to go above set % in your other problem. Is it too much of a coincidence I ask or do you have a duff wall charger? Just a thought but may be way off the mark. See below;

Control Pilot (Current limit): The charging station can use the wave signal to describe the maximum current that is available via the charging station with the help of pulse-width modulation: a 16% PWM is a 10 A maximum, a 25% PWM is a 16 A maximum, a 50% PWM is a 32 A maximum and a 90% PWM flags a fast charge option.[27]

The PWM duty cycle of the 1 kHz CP signal indicates the maximum allowed mains current. According to the SAE it includes socket outlet, cable and vehicle inlet. In the US, the definition of the ampacity (ampere capacity, or current capacity) is split for continuous and short term operation.[27] The SAE defines the ampacity value to be derived by a formula based on the 1 ms full cycle (of the 1 kHz signal) with the maximum continuous ampere rating being 0.6 A per 10 µs up to 850 µs (with the lowest 100 µs × 0.6 A = 6 A). Above 850 µs, the formula requires subtraction of 640 µs and multiplying the difference by 2.5. For example (960 µs − 640 µs) × 2.5 A = 80 A.[26]


PWM duty cycle indicating ampere capacity[27]

PWM	SAE continuous	SAE short term
50%	30 A	36 A peak
40%	24 A	30 A peak
30%	18 A	22 A peak
25%	15 A	20 A peak
16%	9.6 A
10%	6 A

 

[Thebriggie]

See this link for some understanding of the cable and signalling

SAE J1772 - Wikipedia

en.m.wikipedia.org

Alan

 

[Figgeman]

The draw of power is controlled by the control pilot link which happened to be the same link that was probably causing you to go above set % in your other problem. Is it too much of a coincidence I ask or do you have a duff wall charger? Just a thought but may be way off the mark. See below;

Control Pilot (Current limit): The charging station can use the wave signal to describe the maximum current that is available via the charging station with the help of pulse-width modulation: a 16% PWM is a 10 A maximum, a 25% PWM is a 16 A maximum, a 50% PWM is a 32 A maximum and a 90% PWM flags a fast charge option.[27]

The PWM duty cycle of the 1 kHz CP signal indicates the maximum allowed mains current. According to the SAE it includes socket outlet, cable and vehicle inlet. In the US, the definition of the ampacity (ampere capacity, or current capacity) is split for continuous and short term operation.[27] The SAE defines the ampacity value to be derived by a formula based on the 1 ms full cycle (of the 1 kHz signal) with the maximum continuous ampere rating being 0.6 A per 10 µs up to 850 µs (with the lowest 100 µs × 0.6 A = 6 A). Above 850 µs, the formula requires subtraction of 640 µs and multiplying the difference by 2.5. For example (960 µs − 640 µs) × 2.5 A = 80 A.[26]


PWM duty cycle indicating ampere capacity[27]

PWM	SAE continuous	SAE short term
50%	30 A	36 A peak
40%	24 A	30 A peak
30%	18 A	22 A peak
25%	15 A	20 A peak
16%	9.6 A
10%	6 A

Thank you, I appreciate your info. At the same time I think this is way more technical than what should be necessary for an average consumer to have knowledge about.
I have paid for it to work, so I will keep trying to get a hold of the company that sold the wall box.
Wish me luck…..

 

[Thebriggie]

Agree but you put it out there asking for info and I, perhaps mistakenly, supplied technical stuff back. I just put one issue raised with another and putting them together came to a possible conclusion. It's better to put it out there just in case you want more info...some do some don't...so that when you talk to the supplier it may help frame the discussion about the issue(s). Apologies if I went too technical

Hope you get satisfaction from them soon.

All the best, Alan

 

[josje]

Latest software (for wallbox) installed?
This box uses fully dynamic load balancing, is this causing the problem? (using a lot of power elsewhere in/around the house)

 

[Figgeman]

Agree but you put it out there asking for info and I, perhaps mistakenly, supplied technical stuff back. I just put one issue raised with another and putting them together came to a possible conclusion. It's better to put it out there just in case you want more info...some do some don't...so that when you talk to the supplier it may help frame the discussion about the issue(s). Apologies if I went too technical

Hope you get satisfaction from them soon.

All the best, Alan

Yes, you’re correct. I asked and you replied, and I appreciate it. You have very interesting and valuable information. Sorry if I sounded grumpy, that was not my intention. It was just a general expression of frustration because of all the problems with the wall box. My frustration was aimed for the wall box company. Not you. 😊🙏

 

[Milkfloat]

Forgive me, as I know nothing about Scandanavian power systems. However, reading other threads on this forum, it would appear that many of you you have 3 phase supply at home. If a wallbox is supplied with 3 phase power, then only a 3 phase compatible EV can accept the full 11kW. However, the MX can only accept single phase power so it would only charge at the maximum rate of 11/3 kW; about 3.6kW. Here in UK, domestic supply is, almost without exception, single phase but we can draw up to 100 amps. We are permitted 30 amps to our wall chargers so, at 240 volts, that is 7.2kW. The limit then becomes the MX-30 AC charge controller that is capped at 6.6kW and not the charger. So, everyone in UK with a wallbox charges at the MX maximum of 6.6kW. You could charge most PHEV's at full rate as it is very common for their AC charge controllers to be capped at 3.6kW. That charge cable looks very thin by the way; are you sure that it is adequately rated?

 

[Figgeman]

Forgive me, as I know nothing about Scandanavian power systems. However, reading other threads on this forum, it would appear that many of you you have 3 phase supply at home. If a wallbox is supplied with 3 phase power, then only a 3 phase compatible EV can accept the full 11kW. However, the MX can only accept single phase power so it would only charge at the maximum rate of 11/3 kW; about 3.6kW. Here in UK, domestic supply is, almost without exception, single phase but we can draw up to 100 amps. We are permitted 30 amps to our wall chargers so, at 240 volts, that is 7.2kW. The limit then becomes the MX-30 AC charge controller that is capped at 6.6kW and not the charger. So, everyone in UK with a wallbox charges at the MX maximum of 6.6kW. You could charge most PHEV's at full rate as it is very common for their AC charge controllers to be capped at 3.6kW. That charge cable looks very thin by the way; are you sure that it is adequately rated?

Thanks for your input.
Honestly, I’m not sure about anything regarding this wall box. So far it’s been behaving like cheap garbage in my opinion. Maybe I expected too much, I don’t know.
The UK solution sounds better for Mazda owners. Didn’t think about that detail when I ordered the box (which was through cooperation between Mazda and the wall box company…).
You are correct; I have 3 phase.
The cable is the one that comes with the wall box. I have not seen any other cable on these boxes.

 

[Milkfloat]

In that case, little wrong with the wallbox. It doesn't matter which one you get, 3.6kW is max. Sometimes the wallboxes come with a software current cap; I know that mine did. It is a supposed safety feature. It is up to the installer to certify that the system is fully satisfactory and then lift the power to its full design level. Check with supplier to see if that is the case. It may well explain your 4 amp shortfall. Either way, I am pretty sure that there is nothing wrong with that box.

 

[Thebriggie]

Apart from the fact it won't stop charging at the set %......

See other thread battery "keeps charging" also from Figgerman.

If you can cast any light on that, that would be appreciated.

Alan

 

[Milkfloat]

I have read that thread now. Problem is that I don't have any knowledge of the wallbox. However, based on my box, I wonder about the software settings. From the phone App that most of us use, only a fraction of the settings are visible. However, logging on with a PC via the website, a whole raft of additional settings are available. I just had a quick look at the ABL website and noted that charge current can be set in 1 amp increments. So I think we have the solution to the "lost" 4 amps and that certainly won't be available on the phone App. I will take a deeper look when I have more time but I think that the settings in the box will cure both issues. I suspect that the installer fitted it straight out of the box without looking at any of the settings. My brother had a similar issue with a UK made box but a quick phone call to them and they fixed it via the "net". I still venture that there is nothing wrong with that box.

 

[Milkfloat]

And a new major software update 1.8 available soon. See below.

New Software Update 1.7 p5
Recently, a security vulnerability (CVE-2021-44228) related to the open-source Java library log4j became known.
The critical vulnerability in log4j has been elevated to warning level red by the German Federal Office for Information Security (BSI).

ABL recommends an update to SW version 1.7p5 to fix the security issue.

In early 2022, we will release a major update with Software Update 1.8.

DOWNLOAD

 

[Figgeman]

In that case, little wrong with the wallbox. It doesn't matter which one you get, 3.6kW is max. Sometimes the wallboxes come with a software current cap; I know that mine did. It is a supposed safety feature. It is up to the installer to certify that the system is fully satisfactory and then lift the power to its full design level. Check with supplier to see if that is the case. It may well explain your 4 amp shortfall. Either way, I am pretty sure that there is nothing wrong with that box.

Thanks again. I am convinced there’s probably nothing wrong with that part. There are other issues though.
But it sure feels good to remove this issue from the list. 🙏

 

[Figgeman]

And a new major software update 1.8 available soon. See below.

New Software Update 1.7 p5
Recently, a security vulnerability (CVE-2021-44228) related to the open-source Java library log4j became known.
The critical vulnerability in log4j has been elevated to warning level red by the German Federal Office for Information Security (BSI).

ABL recommends an update to SW version 1.7p5 to fix the security issue.

In early 2022, we will release a major update with Software Update 1.8.

DOWNLOAD

Yes, I found this too when I searched for answers on the ABL site. 😊

 

[Granis]

I have a wall box that can deliver max 11kW. I never see more than 2.6kW on the wall box display.
Is this normal?
If not - what’s wrong?
What can be done about it?
Thanks.

View attachment 442


View attachment 440

I got the same wallbox and I charge with 3,4 kW. How many amps is your main servicefuse to the house?
I got 25A servicefuse but only 16A to the charger so that is the limit for me. You can get 6,6 kW, but then you have to connect the charger to 1phase 32A. That’s extremely expensive to have that kind of servicefuse in sweden.

 

[Figgeman]

I got the same wallbox and I charge with 3,4 kW. How many amps is your main servicefuse to the house?
I got 25A servicefuse but only 16A to the charger so that is the limit for me. You can get 6,6 kW, but then you have to connect the charger to 1phase 32A. That’s extremely expensive to have that kind of servicefuse in sweden.

Yes, you are perfectly right. I didn’t do the math…

 

[Milkfloat]

Don't beat yourself up. Why wouldn't an 11kW charger charge at 11kW? After all, if you bought a new iPace then it would! (Except you would need to raise the current setting on your particular unit) Whether you have a technical knowledge or not, manufacturers and the media are very imprecise in their information. Tell me which manufacturer publishes charge curves in their publicity material that shows DC charge rate collapsing after 75% SOC. Some are better than others, of course. Mazda seems particularly vague; we don't even know the official usable battery capacity. You could look for a long time to find out that the mx-30 has an AC charge limit of 6.6kW and that Swedish homes could only charge such a car with 3.6kW because of domestic 3 phase supply. By the way, I am assuming that your charger is smart and it is on the "net". That may be a false assumption on my part. For me to investigate further, what is the charger model number please?

 

[seasidebaz]

Just my 2 pennies - 2.5 to 2.6kw is exactly what you get from the 3 pin cable when charging at 10A

 

[Figgeman]

Thanks

Don't beat yourself up. Why wouldn't an 11kW charger charge at 11kW? After all, if you bought a new iPace then it would! (Except you would need to raise the current setting on your particular unit) Whether you have a technical knowledge or not, manufacturers and the media are very imprecise in their information. Tell me which manufacturer publishes charge curves in their publicity material that shows DC charge rate collapsing after 75% SOC. Some are better than others, of course. Mazda seems particularly vague; we don't even know the official usable battery capacity. You could look for a long time to find out that the mx-30 has an AC charge limit of 6.6kW and that Swedish homes could only charge such a car with 3.6kW because of domestic 3 phase supply. By the way, I am assuming that your charger is smart and it is on the "net". That may be a false assumption on my part. For me to investigate further, what is the charger model number please?

Thanks, but with all things added together with the Swedish electrical system and all, it seems to make sense. I agree that the information about these limitations is not something that’s highlighted from anyone.