SteveDillon
1 mW
- Joined
- Oct 14, 2020
- Messages
- 10
Hi,
I'm putting together an ebike system using a KT controller (22A sine wave), LCD08 and a Shengyi DGWX2 motor with 36v battery.
At the moment, it's all connnected up 'on the bench' to check it all works.
I've set up the controller using what I hope are sensible values for my (at the moment) throttle only system as follows
P1=72, P2=6, P3=1, P4=0, P5=15, C1=2, C2=0, C3=0, C4=0, C5=10, C6,7,8,9=0, C11=0,C12=4,C13=0,C14=2,L1,L2=0,L3=1,L4=5
What happens is:
As I apply throttle, the motor starts fine (I'm hoping the hall wiring is OK), but as I apply more throttle and the motor speeds up, at some point the motor suddenly decides to be very noisy and doesn't run at all smoothly. The point at which the motor enters this noisy mode can be changed by altering the value of C5. For example, if C5 is 3 the motor enters noisy mode at very low speed and throttle input. This makes me think there is some sort of current limiting going on.
Other odd things as follows:
The battery voltage is reading 38.5v, but only one bar on the battery graphic is 'lit' ??
The speed reading is very very low.
The power reading seems very low as well; with C5=10, the power only seems to get to just 18W before the motor enters noisy mode, and with C5=3, only 9W is achievable.
I've connected the motor to my wife's ebike which has a Cycle Analyst and Grinfineon controller. It all works fine, and the CA displays a much more sensible power usage (around 50W at high speed and no load).
It seems that the KT controller is getting itself a bit confused on voltage and current, but I can't find any settings to resolve this. Is it still possible that the hall sensors are wired wrongly ? My limited understanding of this sort of thing leads me to think not; why would it run smoothly up to a certain speed (power, current) then snap into noisy rough mode ?
Any suggestions gratefully received.
I'm putting together an ebike system using a KT controller (22A sine wave), LCD08 and a Shengyi DGWX2 motor with 36v battery.
At the moment, it's all connnected up 'on the bench' to check it all works.
I've set up the controller using what I hope are sensible values for my (at the moment) throttle only system as follows
P1=72, P2=6, P3=1, P4=0, P5=15, C1=2, C2=0, C3=0, C4=0, C5=10, C6,7,8,9=0, C11=0,C12=4,C13=0,C14=2,L1,L2=0,L3=1,L4=5
What happens is:
As I apply throttle, the motor starts fine (I'm hoping the hall wiring is OK), but as I apply more throttle and the motor speeds up, at some point the motor suddenly decides to be very noisy and doesn't run at all smoothly. The point at which the motor enters this noisy mode can be changed by altering the value of C5. For example, if C5 is 3 the motor enters noisy mode at very low speed and throttle input. This makes me think there is some sort of current limiting going on.
Other odd things as follows:
The battery voltage is reading 38.5v, but only one bar on the battery graphic is 'lit' ??
The speed reading is very very low.
The power reading seems very low as well; with C5=10, the power only seems to get to just 18W before the motor enters noisy mode, and with C5=3, only 9W is achievable.
I've connected the motor to my wife's ebike which has a Cycle Analyst and Grinfineon controller. It all works fine, and the CA displays a much more sensible power usage (around 50W at high speed and no load).
It seems that the KT controller is getting itself a bit confused on voltage and current, but I can't find any settings to resolve this. Is it still possible that the hall sensors are wired wrongly ? My limited understanding of this sort of thing leads me to think not; why would it run smoothly up to a certain speed (power, current) then snap into noisy rough mode ?
Any suggestions gratefully received.