XPD: open-source keywin e-bike lab replacement

[NeilP]

Regarding Version 0.20.0 and the Speed Switch Mode Drop down box and Help/tip box that appears
The help states there is the option of Switch Mode or Toggle Mode.

The Drop down only offers the option to select Toggle Mode. There is no Switch mode.

[parabellum]

anpaza wrote:I would like to beg anybody who uses XPD for the first time to keep an eye on the real current (with Cycle Analyst, or with a wattmeter), after setting the desired current limits with XPD.
I did limited testing of settings only for EB212/Lyen and EB206/Lyen controllers, the rest are untested, thus the real curent limits may happen to be larger than set.

I was wondering why my Lyens 18Fet runs 89Amp peak and 76Amp continuous after programming 65Amp battery limit. BTW it works great, after little recalculation and adjusting! Thanks again.

[NeilP]

That makes me think that XPD. is somehow programming the current more accurately than the original software

When I first had my Lyen 18 FET 65amp conttoller, I had seen peaks of 120 amp on the CA even though 65 was set via the software

These 120 amp peaks may have just been the cause of my controller failure, when two of the FETs shorted out

Have not seen peaks like that since controller repair and using XPD

[Floont]

That makes me think that XPD. is somehow programming the current more accurately than the original software
When I first had my Lyen 18 FET 65amp conttoller...

I suspect you're correct about this. I have seen peaks well over 100 amps, when I supposedly have my max programmed at 65amps. However, I suspect that the block-time may have allowed for the over-current condition.

[Hyena]

Anpaza or others, has anyone tried this on the new EB3xx boards ? I have one here that I can't get to recognise through the keywin software or derivitives of using the EB2xx settings.

[NeilP]

That makes me think that XPD. is somehow programming the current more accurately than the original software
When I first had my Lyen 18 FET 65amp conttoller...

I suspect you're correct about this. I have seen peaks well over 100 amps, when I supposedly have my max programmed at 65amps. However, I suspect that the block-time may have allowed for the over-current condition.

you are 100% correct it is actually more likely to be block time than XPD or Keywin...I admit my mistake..I forgot about that..I reckon that is what cooked my controller in the first place..I was playing with block times before I killed it...I had tried something like 4 seconds..It was oK for a few days like that so I tried 5 seconds....then .no power ..shorted mosfets...not straight away ..but about 2 days later pulling slowly away from local Parish hall civic offices

[Floont]

...I reckon that is what cooked my controller in the first place..I was playing with block times before I killed it...I had tried something like 4 seconds..It was oK for a few days like that so I tried 5 seconds....then .no power ..shorted mosfets...not straight away ..but about 2 days later pulling slowly away from local Parish hall civic offices

That's why my next config I load into my controller will have a block time of ZERO.

Does XPD have a block time of 0 now? I thought I saw it in this thread somewhere...

[gensem]

It does... Im using it with a MAC and 0 block time does work.
Btw I fail to see why people its use block time. It only makes sense for big DDs with 20-30 amp controllers. In that case Block time ll help you acelerate from a dead stop.
Im a geared hub BT ll mostly help strip your gears. In a big DD with lets say 80 amps, the added amps from block time ll generate alot more heat on the hub and stress the controller for a marginal performance gain (if any).

...I reckon that is what cooked my controller in the first place..I was playing with block times before I killed it...I had tried something like 4 seconds..It was oK for a few days like that so I tried 5 seconds....then .no power ..shorted mosfets...not straight away ..but about 2 days later pulling slowly away from local Parish hall civic offices

That's why my next config I load into my controller will have a block time of ZERO.

Does XPD have a block time of 0 now? I thought I saw it in this thread somewhere...

[NeilP]

Have to say that with 20s LiPo and Lyen 65 amp 18 FET controller and a 5304, increasing block time does give better off the line performance
I have I think 1 or 2 seconds now, and would like to push it up a bit, but do not want to risk zapping the MOSFETS again

[Floont]

Have to say that with 20s LiPo and Lyen 65 amp 18 FET controller and a 5304, increasing block time does give better off the line performance
I have I think 1 or 2 seconds now, and would like to push it up a bit, but do not want to risk zapping the MOSFETS again

Perhaps I misled you with the ZERO block time post. I'd like to configure it so the controller NEVER EVER exceeds the limit, not to give it unlimited block time.

BTW, if you've sent your controller back to Ed already, why not have him beef up your traces to 100amps?

[gensem]

Do you happen to have a CA? What are the peak amps?
Thats probably because your 18fet cannot handle more amps continuosly and you get a boost for 2 seconds.
Im planning to use a big DD with 24fet lyen controller set to 80-100 amps with 0 BT to see how it goes. 74-88v battery its not defined yet and Hal is taking awhile with the frocks.

Have to say that with 20s LiPo and Lyen 65 amp 18 FET controller and a 5304, increasing block time does give better off the line performance
I have I think 1 or 2 seconds now, and would like to push it up a bit, but do not want to risk zapping the MOSFETS again

[NeilP]

BTW, if you've sent your controller back to Ed already, why not have him beef up your traces to 100amps?
[/size][/color]

Not the traces that are the problem, it was the FETS that failed. The tracks have already been beefed up by Lyen to start with and it is the 4110 MOSFETS..maybe one of them was just bad..but no need to risk blowing it again. It is good enough as it is.

I already have it back now anyhow

[parabellum]

Just put you fingers on the controller, if you are comfortable with, it is kind of OK.

[Floont]

...and Hal is taking awhile with the frocks.

Um, who is "Hal"?

[gensem]

He is the designer of the greyb frame and has some big frocks in his garage.

viewtopic.php?f=30&t=25310

[full-throttle]

Um, who is "Hal"?

Heuristically programmed ALgorithmic computer
Don't you people read books anymore

Just kidding
couldn't resist

[NeilP]

big frocks in his garage.

What?

That obviously has some other meaning in the USA? or does he really have a collection of old fashioned ladies dresses? Something we should know?

[gensem]

big frocks in his garage.

What?

That obviously has some other meaning in the USA? or does he really have a collection of old fashioned ladies dresses? Something we should know?

Haha
If im not mistaken its an aussie slang for hub motors.

[NeilP]

I do hope so..either that or we are in for a revelation some time soon...

[hillzofvalp]

I wish the regen on my 12fet from lyen would be stronger... Cause after the conversion of my 29er I am finding it a huge hassle to create a mount for a caliper (it rubs on the 9c). Do you guys even use your rear brake that much? Any chance of making regen much stronger?

[NeilP]

As long as you stay within the voltage limits of your controller hou can always up the regen voltage
I asked about this a while back and as long as you are nog using massive amounts of regen braking immediately after starting with a fully charged battery, you wont have a problem with over volting the cells

I have a 20s LiPo pack, hot at about 83.2 volts
I have my regen volts at around 88 volts

[hillzofvalp]

my pack is 46.2V nominal... I've heard of A123 cells being charged to 3.65V anyways (I charge them to 3.6)... so it couldn't hurt. What do you think the max regen voltage is for my 12FET (extreme) lyen controller, considering my pack voltage as well?

Keep in mind that I'm talking about making the rear motor act as more of an actual brake that could slow me down sufficiently if my front brake failed..

[NeilP]

Now not sure, but expect if Lyen has modded it, it must have 4110 's at least and 100 v caps,so you should be good up to that. but I would probably check with Ed first. . but unless you have had the R12 regen mod done,then you wontget above 75v regen anyway

I would be tempted to up the regen voltage in xpd slowly till you get braking without too high voltages. Do you have a CA ? or maybe rig up a volt meter to the pack and cable tie it to the bars and do a few test runs to see what volts peak at

[hillzofvalp]

volts between phase and ground?

[NeilP]

Sorry ? explain what you mean?