TSDZ2 750w problems

[gavdxb]

Hi All

This is my first build and it’s all going swimmingly apart from the fact I don’t get any pedal assist!

Stupidly I didn’t connect everything together before bolting to the bike but c’est la vie.

I’ve got power to the display and have configured it with max assist level, walk mode on etc.

Walk mode does work.

I can get readings from the torque sensors.

Just nothing when you are pedalling.

Anyone with the same kit have any ideas for me.?

Dodgy controller?

Thanks

 

[peter.c]

I have fitted a few which display do you have
0 is pedal assist switched off
did you use brake cut outs
have you fitted a throttle
Does the speed sensor line up ? with the mark not the bigger end

 

[gavdxb]

I have fitted a few which display do you have
0 is pedal assist switched off
did you use brake cut outs
have you fitted a throttle
Does the speed sensor line up ? with the mark not the bigger end

Hi Peter

I have the vdlc5 screen.

The assist level set to 32 (max).

No brake cut out fitted or throttle.

Speed sensor seems to be lined up and I get a steady (and realistic) speed reading when pedalling.

 

[peter.c]

The gap looks ok
power the display on do not touch the pedals for 30 sec ,the torque sensor has to self calibrate every power up
have you altered any settings other than the wheel size ?
turn off the eu speed setting in the menu otherwise no assist above 15.5
unplug and reconnect all the cables I had one with a dodgy connection /plug
the power assist is very different compared to a bafang mid drive
the more pedal effort the more assist the motor provides

 

[gavdxb]

The gap looks ok
power the display on do not touch the pedals for 30 sec ,the torque sensor has to self calibrate every power up
have you altered any settings other than the wheel size ?
turn off the eu speed setting in the menu otherwise no assist above 15.5
unplug and reconnect all the cables I had one with a dodgy connection /plug
the power assist is very different compared to a bafang mid drive
the more pedal effort the more assist the motor provides

I ha

have you altered any settings other than the wheel size ?
turn off the eu speed setting in the menu otherwise no assist above 15.5
unplug and reconnect all the cables I had one with a dodgy connection /plug
the power assist is very different compared to a bafang mid drive
the more pedal

The gap looks ok
power the display on do not touch the pedals for 30 sec ,the torque sensor has to self calibrate every power up
have you altered any settings other than the wheel size ?
turn off the eu speed setting in the menu otherwise no assist above 15.5
unplug and reconnect all the cables I had one with a dodgy connection /plug
the power assist is very different compared to a bafang mid drive
the more pedal effort the more assist the motor provides

The gap looks ok
power the display on do not touch the pedals for 30 sec ,the torque sensor has to self calibrate every power up
have you altered any settings other than the wheel size ?
turn off the eu speed setting in the menu otherwise no assist above 15.5
unplug and reconnect all the cables I had one with a dodgy connection /plug
the power assist is very different compared to a bafang mid drive
the more pedal effort the more assist the motor provides

I’lm pretty sure the EU speed setting is off and mind is set to 45.

The only other major thing I changed was the assist level to 33 - max assist.

I had a Pinarello Nytro which is purely pedal asssir based on torque and this is definitely providing no assistance at all.

 

[peter.c]

Put the settings back to standard and try it, the manual is not very clear but I adjusted several things it stopped working ,put them back to factory it was then ok
now I check it all works before I adjust any thing
if no joy its the torque sensor connection inside the motor
where did you buy it?

 

[gavdxb]

Just a thought - I have been reading around controllers - could the problem be I have a 52v battery and a 48v controller?

 

[peter.c]

Yes that is the problem unless you have the moded controller from the seller in the US tsdz2 will not overvolt[unlike a bafang] if it is 48v model it will not take over 52v [48v fully charged is its max volt ]

 

[gavdxb]

Doh! So would moving to the open source firmware help me?

 

[peter.c]

From what I have read it should, but it is beyond my basic computer skills at least at present it on the list of things to do over the winter
have seen somewhere pre programed controller for sale https://www.electrifybike.com/store/c38/TSDZ2_Open_Source_Firmware_(OSF)_Upgrade_Products.html#/ might help

 

[cycling weakly]

Would discharging the battery to below 52 volts do the trick as a short term fix? I use four 35 watt 12 volt bulbs in series to discharge.

 

[gavdxb]

That’s one of the options I’m considering out of sheer laziness!

I keep coming back to the fact that the walk assist is working though - if the controller was totally rejecting the 52v battery then I wouldn’t expect it to.

From what I have read it should, but it is beyond my basic computer skills at least at present it on the list of things to do over the winter
have seen somewhere pre programed controller for sale https://www.electrifybike.com/store/c38/TSDZ2_Open_Source_Firmware_(OSF)_Upgrade_Products.html#/ might help

 

[Nealh]

The issue with short charging is you run the chance of unbalancing the battery as you will only be able to charge to 3.9v per cell to get 54.6v, then you create other issues to overcome.

52v nominal = 58.8 v fully charged.
48v nominal = 54.6 fully charged so as long as you are at or below 54.6v it should work. Just watch the discharge and not below 46v.

 

[gavdxb]

ST-link has arrived (thanks - Amazon). I have a copy of stock firmware modified for 52v which I will try to flash to it tomorrow.

Just trying to get my head round the instructions - I swear bootloading Android phones was a damn site easier to understand than this!

Are there any clear, step-by-step instructions on how to do this?

 

[peter.c]

Now you see what I mean about the software upgrade process

 

[gavdxb]

I’ll let you know how it goes tomorrow and try to write something.

The more I read the less what I am doing at this stage is a change in firmware and more like you used to do on spectrums/c64’s for game cheats/codes - pushing values into the existing data tables.

Hopefully it’s going to be straightforward!

 

[Woosh]

Now you see what I mean about the software upgrade process

it's only complicated the first time you set up the programming kit.

 

[peter.c]

Woosh did you find that flashing / upgrade makes for improved power delivery and longer battery life ?

 

[gavdxb]

The most difficult thing was getting the laptop to connect to the cheap Amazon ST-Link.

Once that was done (4 hours fiddling this morning) it was a 1 minute job.

I flashed with stock firmware but for 52v and all working now.

I’ll have a go at OSF next.

it's only complicated the first time you set up the programming kit.

 

[peter.c]

Well done enjoy a ride as a reward back to tinkering later