Ok, got a strange issue here.
I've gained a few months experience with Sabvoton controllers whilst building my current ebike (8kw enduro style) and taking it out down the road on test rides. Long story short, my first SVMC72150 died because of my stupidity with the phase wiring but I now have a new SVMC72150 which I would expect to work exactly the same way. On my first controller, I set the DC current to 85A and the phase to 160 which gave just under 5kw with my 52v battery. I confirmed this with the reading from my bluetooth BMS. There was one occasion where I tried a different throttle and the power seemed limited, with exactly the same settings I was only getting just over 3kw of power draw - weird! I checked the voltage output of the throttle and the settings on the sabvoton and there were no issues. As soon as I switched back to my normal throttle, bam - full power again.
I'm having a similar issue with reduced power with my new controller now. I have attached screenshots of my settings incase there is some glaring error which I can't find btw. I set the DC current to 85A, but the BMS only measures 60 and it feels nowhere near as quick as it did before. The thing is that if I increase or decrease the DC current, the bike gets quicker and slower and BMS reads more and less, but it' still drawing way under what it should be. I have tried shorting the throttle wire to 5v which should simulate full throttle but still same issue.
The best way I can describe it is it starts off normally for the first second (increasing phase current also makes a difference, but only for first second of accelerating) then just seems to gradually get up to speed whereas before, it felt like it had some poke to it. As I said, changing the setting does have an effect, but not proportional. Any ideas or experiences like this?
Cheers
I've gained a few months experience with Sabvoton controllers whilst building my current ebike (8kw enduro style) and taking it out down the road on test rides. Long story short, my first SVMC72150 died because of my stupidity with the phase wiring but I now have a new SVMC72150 which I would expect to work exactly the same way. On my first controller, I set the DC current to 85A and the phase to 160 which gave just under 5kw with my 52v battery. I confirmed this with the reading from my bluetooth BMS. There was one occasion where I tried a different throttle and the power seemed limited, with exactly the same settings I was only getting just over 3kw of power draw - weird! I checked the voltage output of the throttle and the settings on the sabvoton and there were no issues. As soon as I switched back to my normal throttle, bam - full power again.
I'm having a similar issue with reduced power with my new controller now. I have attached screenshots of my settings incase there is some glaring error which I can't find btw. I set the DC current to 85A, but the BMS only measures 60 and it feels nowhere near as quick as it did before. The thing is that if I increase or decrease the DC current, the bike gets quicker and slower and BMS reads more and less, but it' still drawing way under what it should be. I have tried shorting the throttle wire to 5v which should simulate full throttle but still same issue.
The best way I can describe it is it starts off normally for the first second (increasing phase current also makes a difference, but only for first second of accelerating) then just seems to gradually get up to speed whereas before, it felt like it had some poke to it. As I said, changing the setting does have an effect, but not proportional. Any ideas or experiences like this?
Cheers
Attachments
-
Screenshot_20210601_205730_com.mqcon.app.android.settingtool.jpg62.2 KB · Views: 930
-
Screenshot_20210601_205735_com.mqcon.app.android.settingtool.jpg44.6 KB · Views: 928
-
Screenshot_20210601_205745_com.mqcon.app.android.settingtool.jpg58.6 KB · Views: 927
-
Screenshot_20210601_205752_com.mqcon.app.android.settingtool.jpg59.9 KB · Views: 928
-
Screenshot_20210601_205757_com.mqcon.app.android.settingtool.jpg53.1 KB · Views: 928
-
Screenshot_20210601_205801_com.mqcon.app.android.settingtool.jpg51.1 KB · Views: 928
-
Screenshot_20210601_205808_com.mqcon.app.android.settingtool.jpg35.9 KB · Views: 928
-
Screenshot_20210601_205815_com.mqcon.app.android.settingtool.jpg52.1 KB · Views: 929