ZXD2400 modification guild 3Kw 0-60V 0-50A

[fishinjunky]

Its the best option for charging one battery. 2 in series. 2 in parallel. the battery in the chair set to 12A max, and any other scenario you could think of.

For gel for e.g it can be set to 14.1v with a termination of 0.3A and a float of 13.6 in cyclic use, 13.45v in storage use, etc. but its main use is as a power supply for your various needs like powering a hobby charger. Its a 3000 watt capable, 2 or 3 stage charger or powr supply. 0 to 60V and 0 to 50A if powered from a 230v supply. But its loud and over the top power wise as a maintainer only.

To keep the alive outside the chair you need only charge them monthly. Or hold them at 3.4 to 13.5v indefinitely. That only needs much less than an amp.

Ok I see. I'm still checking prices on a 220 outlet or two Shirley psu to max out the iCharger ( not for my lifepo4 pack only 40amp for it) but just for the option. It's like having a fast car that you're only allowed to drive at half speed. I would only ever charge at the full 70amps for very short periods of time as I remember you saying with the icharger should only be used at 50% on big packs because they are made for charging shorter time periods.

[Burgerman]

It was made with small 1 to 6ah hobby lipos in mind mostly. It may be fine. Just being cautious.

[Scooterman]

I had to do a Factory Reset on one of mine. It seemed to reset fine, and didn't require a password.

I also set the EPROM max volts and amps to 30v and 40A respectively for the PL8. Then saved the settings before exiting.

Is that all I need to do?

The last time I went into the EPROM menu was when I first received the ZXD's courtesy of Shirley Post

And that was in the dime and distance past...

PS: I had the User Manual site bookmarked but it doesn't work anymore? https://translate.googleusercontent.com ... B4EA0dvfFA

[Burgerman]

Is that all I need to do?

I just turned it on and used it. 50A is useful. Sometimes needed.
60V is not used much but nice to be able to do. As long as you dont set 60V then plug in the PL8. But why would you?

[Scooterman]

Cheers BM.

Sorry about the late reply, even though I've added burgerman@ntlworld.com to my contacts WD forum mail still ends up in my junk mailbox

[Burgerman]

Thats a problem with google. Google isnt email. Its webmail. And its not "free" because you are the product. And it belongs to the biggest advertising company on the planet. Why do people use it.

[Scooterman]

The ZXD had been working fine month after month, then for some reason the parameters went wrong???

So I stuck a faulty sticker on it and used the other ZXD instead.

So last week I did a factory reset and changed the EPROM Max Volt and Current settings, and saved before exit.

Then set current and volts to 40A and 30V as seen in photo. (the photo is a bit blurry but the LED display is fine in real life)

But it only outputs at 15V when connected to the PL8 ??????????????????

I went to charge my scooter this afternoon but didn't like to press START with the supply just showing 15V. So I disconnected and am now charging with other ZXD and PL8.

Any ideas what might have gone wrong with the ZXD?

[LROBBINS]

One of my ZXD supplies did the same thing a few weeks ago - outputting only ca. 1/2 the set voltage. Moreover, that was directly charging Pb batteries without the PL8. The cure for this was to go through ALL of the settings in the factory menu, including a reset to factor of the EEPROM, and then re-doing my intended settings in ALL relevant eeprom addresses. Once re-programmed it was back to behaving 100% normally.

That proved a bit of a pita because Firefox had stopped linking properly - it might go the appendix 3 when clicked on appendix 2 and, more often than not, it showed the roman alphabet encoding of the Chinese page rather than the translated pages. I got around this by using good old Internet Explorer (which I normally assiduously avoid). Once I got to the right pages I also downloaded the most important of them to the SSD in my computer so that I have local copies.

If you PM me your email address, I can, one way or another, send you the downloaded copies (they are complete web page folders) and also a spreadsheet summary of my settings - with one caveat; the temperature profile I have in EEPROM is for ZXD supplies modified with low noise fans having their own temperature sensors and may not cool enough with the stock setup.

[Burgerman]

Maybe I sould have a copy just in case! Could you send them to burgerman@wheelchardriver.com please? I will host them on this server too.

[greybeard]

Maybe I sould have a copy just in case! Could you send them to burgerman@wheelchardriver.com please? I will host them on this server too.

Check spelling of link!

[Burgerman]

Oh. Sorry. My keyboard is waterproof. As is the laptop. It a "rugged" del. The membrane in the keyboard means that sometimes if I dont press firmly I miss a letter! It doesent feel bad, and feels perfectly normal. But not sensitive to a very light press.

burgerman@wheelchairdriver.com

[Burgerman]

One of my ZXD supplies did the same thing a few weeks ago - outputting only ca. 1/2 the set voltage.

You guys break everything!

[LROBBINS]

At least this time there was no magic smoke, just corrupted software. Here's a drive link for the ZXD web pages:
https://drive.google.com/drive/folders/1duvFUrAZdcNYYjT3a18cV_JsiuJ2elZA?usp=sharing

[Burgerman]

Got them.

[shirley_hkg]

By running the self calibration process (press /hold encoder knob 15 sec till a white zero), will resume everything to factory preset.

[Scooterman]

If you PM me your email address, I can, one way or another, send you the downloaded copies (they are complete web page folders) and also a spreadsheet summary of my settings - with one caveat; the temperature profile I have in EEPROM is for ZXD supplies modified with low noise fans having their own temperature sensors and may not cool enough with the stock setup.

Thank you for trying to help. I remember when it went wrong, I tried to recalibrate it by following the manual and using the good ZXD as a reference. But I got stuck on calibrating the amps as either my multimeter wasn't high enough rated current or it needed a shunt or something, but I can't quite remember as it was a long time ago. But I think your method is different and no doubt much better, I was probably leading myself up dark tunnel with no light! But I will give Shirley's method a go first as it's much less of a brain buster for me.

By running the self calibration process (press /hold encoder knob 15 sec till a white zero), will resume everything to factory preset.

Thanks Shirley I shall give that a go. I will be brilliant if the fix is as a simple as that. I can spend the rest of the day sitting in the sun getting

I think the problem may have been caused by.....

I was merrily charging the scooter one day with the ZXD and PL8 sat on the scooter seat. But I noticed that one of the scooter armrest was pressing against the ZXD's silver knob, and the display started showing odd voltage value. But whether the armrest did activate the ZXD knob (or not) and mess up the parameters I'm not really sure. Or whether it was just a coincidence and the ZXD when wrong all by itself, and I was totally blameless (innocent face!)

But I'm eager beaver to give your solution a try. And if not I will explore LROBBINS fix, but I'm concerned it may be a bit above my abilities.

[Scooterman]

When I press and hold the knob it initially shows the FACTORY SETTINGS then a WHITE ZERO with some RED and GREEN numbers that values keep on changing, then it changes to a WHITE NUMBER ONE and the message PLEASE SHORT CIRCUIT.

I also got at one time an ERR 014 message

[Scooterman]

.

[LROBBINS]

Yes, doing the auto calibrate will also reset most EEPROM addresses to factory settings. The autocalibration also does a very good job, probably better than a manual calibration unless you have certified accurate test equipment. Take a look at the autocalibration procedure on the web pages - it goes step by step including telling you when you have to short the output and when you have to remove the short. After that, you still have to go through the various settings because the factory settings are probably not what you want.

[martin007]

Today the power supply has arrived.
It looks good.

Can I place it near another power supply?


Many thanks shirley_hkg

[Burgerman]

Yes. Unless you think they might get up to no good.

[martin007]

Unless you think they might get up to no good.

What do you say?

[biscuit]

It is a joke, that if you leave two of them too to close together they might make baby ZXDs.
If that happens, I think anybody here would be happy to home one of the babies when it is old enough.

[Scooterman]

Yes, doing the auto calibrate will also reset most EEPROM addresses to factory settings. The autocalibration also does a very good job, probably better than a manual calibration unless you have certified accurate test equipment. Take a look at the autocalibration procedure on the web pages - it goes step by step including telling you when you have to short the output and when you have to remove the short. After that, you still have to go through the various settings because the factory settings are probably not what you want.

Brilliant Leonard, thank you. I didn't realise the zipped files included manuals. I will have a careful read through today. I much appreciate you trying help

[woodygb]

It is a joke, that if you leave two of them too to close together they might make baby ZXDs.
If that happens, I think anybody here would be happy to home one of the babies when it is old enough.

You must of course remember to arrange the polarities correctly .....

[Burgerman]

I think martin will be eve more confused when he returns.

[Scooterman]

Leonard - Update

I've just gone through the auto calibration and it seemed to go okay, no error codes. And the ZXD is now outputting correct voltage (same as knob selected value).

ZXD seems to be working normally again which I'm really pleased about. I'll use it next time I need to charge the scooter or WC with PL8

PS: Thanks also to Shirley

[martin007]

I understand.
I will respect the polarity, I don't want to end up singed.

[Burgerman]

The polarity was a joke about sex.

[steves1977uk]

The ZXD had been working fine month after month, then for some reason the parameters went wrong???

So I stuck a faulty sticker on it and used the other ZXD instead.

So last week I did a factory reset and changed the EPROM Max Volt and Current settings, and saved before exit.

Then set current and volts to 40A and 30V as seen in photo. (the photo is a bit blurry but the LED display is fine in real life)

But it only outputs at 15V when connected to the PL8 ??????????????????

I went to charge my scooter this afternoon but didn't like to press START with the supply just showing 15V. So I disconnected and am now charging with other ZXD and PL8.

Any ideas what might have gone wrong with the ZXD?

I have 3 ZXD PSUs and never encountered this issue. Any chance this PSU was left in cold conditions SM? Although I wouldn't of thought a bit of cold would cause this.

Steve