Here are some pictures of the controller circuit board.
The controller came with a little wire connecting the 60V option. I see that one side of each option is connected to ground and the other side goes through a resistor, with each option having a different value resistor, beyond this the trace is hard to follow. I am wondering what function this serves in the controller, I'm guessing it has something to do with current control or something. I have been looking online for any mention of this but since this is a generic controller with no documentation as far as I can tell it is super hard to find anything about this specific circuit. I am currently using the controller with a 60V battery pack and I'm planning to upgrade it to 72V. Does anyone know what would happen if I leave it on the 60V option or what if I select the 80V option. I think the obvious thing to do would be to cut the 60V connection and connect the 72V option but what does this actually change. Second question, why do the 3 speed options in this controller change nothing? Connecting K1 or K2 to ground does not change the max speed of the motor even when letting the wheel spin freely. It is not even hitting half of its theoretical max speed based on motor KV and battery voltage. Third question, what do the F1-F7 pins do in these generic controllers. Thanks for any help or clarification you can provide.
The controller came with a little wire connecting the 60V option. I see that one side of each option is connected to ground and the other side goes through a resistor, with each option having a different value resistor, beyond this the trace is hard to follow. I am wondering what function this serves in the controller, I'm guessing it has something to do with current control or something. I have been looking online for any mention of this but since this is a generic controller with no documentation as far as I can tell it is super hard to find anything about this specific circuit. I am currently using the controller with a 60V battery pack and I'm planning to upgrade it to 72V. Does anyone know what would happen if I leave it on the 60V option or what if I select the 80V option. I think the obvious thing to do would be to cut the 60V connection and connect the 72V option but what does this actually change. Second question, why do the 3 speed options in this controller change nothing? Connecting K1 or K2 to ground does not change the max speed of the motor even when letting the wheel spin freely. It is not even hitting half of its theoretical max speed based on motor KV and battery voltage. Third question, what do the F1-F7 pins do in these generic controllers. Thanks for any help or clarification you can provide.