Argos E-plus Problem

[Sparksandbangs]

Well, could it get any worse? The answer is yes.

Preparing for the new stuff, I discover that it's a sensorless motor with 6-pin connector. That's after Waspy sent his stuff for sensored motors. I've had to cut the motor lead off the old controller and I'll solder it to the new one. Options are severely limited now. I've chosen a dual-mode controller from Aliexpress. actually, it's three modes. What do you reckon the third mode is? We have sensored, sensorless and what - virtual sensors? I couldn't find any decent cheap ones on Amazon or Ebay, which surprised me, as I've always been able to find them for other people. Let's hope it works! £31.59 inc LCD, free throttle and shipping. 17A with S866 LCD SM connectors:

Three-Mode Ebike Controller 17A 26A 30A 40A 36V/48V with Learning Function S866 LCD Display 350W-1000W Motor - AliExpress 18

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

The three modes are probably sine wave mode, square wave mode and no hall mode.

On the bright side in my hours of reading through forums I've found a firmware that works on the Yose Power Lishui controllers turning them into torque control. Once flashed it's set up through the C500 display and one of the options is power levels at 13, 20, 33, 50 and 100% the same as the KT.

Could be an option to upgrade for around £5 and keep all the same gear. I don't think many people have used it though so there is always the chance it could destroy the controller.
If so the Lishui will also have three modes. On, off and broken.

I think an interesting project though.

 

[saneagle]

The three modes are probably sine wave mode, square wave mode and no hall mode.

On the bright side in my hours of reading through forums I've found a firmware that works on the Yose Power Lishui controllers turning them into torque control. Once flashed it's set up through the C500 display and one of the options is power levels at 13, 20, 33, 50 and 100% the same as the KT.

Could be an option to upgrade for around £5 and keep all the same gear. I don't think many people have used it though so there is always the chance it could destroy the controller.
If so the Lishui will also have three modes. On, off and broken.

I think an interesting project though.

It's a shame it doesn't have a workaround for blown MOSFETs. So much for Lishui being more reliable than KT, Mr Woosh.

 

[saneagle]

Now we reach the end of the story. I got the three-mode controller mentioned above. Now it's installed and working. Obviously every connector that could be wrong was wrong, so quite a bit of soldering. The connector for the motor is a 6-pin one - 3 phase wires and 3 speed sensor wires. I can't say that I've ever seen one for sale, so I cut the cable of the old controller and soldered it to the new one. The motor would only run backwards, even though I did the self-recognition procedure many times. In the end I solved it by mismatching the phase wire colours (from motor to controller green to yellow, blue to green and yellow to blue).

One other problem was that the LCD gives an 08 error if you don't connect a throttle, so I installed one and set P09 = 1 to make it pedal dependent. There are 6 magnets in the speed sensor, so I set whatever parameter it was for that too.

A qyuick test ride showed that the motor is a bit rough at startup, but smooths down as the speed increases. Mikel doesn't weigh much and he's very fit, so I doubt that it's a problem for him, but it could give problems when going slowly up a steep climb for a heavyweight rider.

There seems to be some interessting settings in the S866 LCD for how the speed is calculated and displayed. I think it would be possible to misrepresent the speed slightly so that the speed would show as 15 mph and the motor would cut off at that speed, when you're actually going a bit faster. before I did any settings, the speed was showing as 80 mph on level 1. The police and Guardian could have had a field day if they stopped me with it like that.

This is what it's like now. Thanks to Waspy for the controller box.

 

[Waspy]

Looks very tidy.

Gotta say I'm not a big fan of ferric oxide though