2kw 60v chines motor controller

[sharonarn]

hello

i am trying to fix a brussless motor controller
intialy the controller was shorted
one phase fets where fried and i replaced them
now the controller turns on but when i try
to give it some gas nathing heppen
the motor feels a little bit stock , i think its maybe
a calibration issue . i have seen some controllers have a
Self-learning encoder ability, but in my controller
there is no such wire. add aphoto of the pcb pads
can you tell if there is such an option in jy controller ?
do you have some anoter idea i shuld check ?

thenks in advance

 

[amberwolf]

Are the phase and hall wires in the same order as they were before the repair?

What was the original cause of the FET failure?

If the motor wires shorted (axle damage, overheating, winding short to stator, etc) then the original fault may have re-damaged the controller.

If the FETs just blew from overheating or overcurrent, the gate drivers could have failed at the same time, so the failed phase may not be being driven correctly anymore, or at all.

 

[sharonarn]

i cant tell for sure if this is the original order
i received only the controller and i am trying it with another engine
the tested engine is ok on anoter controller
the wires seem ok and wont show sign of over heat

 

[amberwolf]

i cant tell for sure if this is the original order
i received only the controller and i am trying it with another engine
the tested engine is ok on anoter controller
the wires seem ok and wont show sign of over heat

Ah. Does the controller have a "self learn" or other "motor learn" mode? Sometimes that's a programming / setup thing, and sometimes it's a wire-jumper-pair. You said yours doesn't have a wire for it, but I see two pads marked as L and LJ that don't have wires on them. Those may have nothing to do with learning, but it is worth a peek.

What happens if you add a wire to each one of those, setup the controller with the motor and battery, power on the controller, and then connect the L and LJ? (some of them you have to connect the learn wires first, then power up). If it starts the motor turning in the correct direction, then power off the controller, disconnect the L and LJ from each other, then power it back on and try it with throttle, gently.

Also, it might in it's setup software, if you have access to that.

I didn't see any of the pics that show teh controller model or brand info. If you have that, or markings on the PCB that have this info, you may be able to find the manufacturer and thus more info about it. Or at least a page where someone else has found some info.


If none of the above is helpful, then there are ways you can manually determine the hall and phase wire order, assuming the controller is actually working (which is hard to tell at this point).

 

[E-HP]

i cant tell for sure if this is the original order
i received only the controller and i am trying it with another engine
the tested engine is ok on anoter controller
the wires seem ok and wont show sign of over heat

Try swapping two of the big phase wires (e.g. swap green with yellow), and see if the motor moves at all, Don't do full throttle, just see if it moves with a little throttle, then report back.

 

[sharonarn]

thenks for youres answer
the controller dont have external learning wires
i tried to jump l and lj and then turn it on doesn't seem to do anything
on the case and the pcb it doesn't have any branding on it
i tried swaping two phase and give throttle didn't do anything
on the pcb there are pads that i suspect maybe for programmer connection
add a picture of it
can you guys confirm it and know what suhld be connected there