What lighting current from the KT controller?

Electric Motors and Controllers
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miki   100 µW

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Joined: Apr 09 2020 6:06am

What lighting current from the KT controller?

Post by miki » Apr 11 2020 3:26am

My driver KT36/48V 12A (max. 25A) Sinus has an output for lighting. This feature can be enabled on the KT-LCD3 display. I wonder what current can be taken from the controller so as not to burn the elements. How strong the lamp can I connect directly to these wires? I use a 48V battery.

obcd   100 W

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Re: What lighting current from the KT controller?

Post by obcd » Apr 11 2020 3:00pm

The 2 kuteng controllers I opened so far had a small separate pcb for the lighting. I assume they output battery voltage if you turn on the light. The switching fet is not so big. There are 2 signals coming from the microcontroller and going to that lighting pcb.
It's a small pcb with not 2 many components, so you might be able to follow the battery path and figure out what components the current passes trough.

miki   100 µW

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Joined: Apr 09 2020 6:06am

Re: What lighting current from the KT controller?

Post by miki » Apr 11 2020 3:34pm

Ok thank you for this info. I prefer not to mix inside the new controller for now, I thought there was some catalog note, some manual, in which these data are officially given. But I see, nothing is officially given in China. Recently in the PAS wiring harness, the ground (Gnd) was led with a YELLOW wire!

Nixunen   100 mW

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Re: What lighting current from the KT controller?

Post by Nixunen » Apr 12 2020 3:12pm

It is 100mA max, so 48v battery, 4.8W max. I use it only to power relay. And when using relay then you can use proper powers to lights.

miki   100 µW

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Re: What lighting current from the KT controller?

Post by miki » Apr 13 2020 2:41am

Nixunen wrote:
Apr 12 2020 3:12pm
It is 100mA max, so 48v battery, 4.8W max. I use it only to power relay. And when using relay then you can use proper powers to lights.
Thank you very much, i.e. poor lighting on 20mA diodes or control of some MOSFET (I don't like relays). Such information should be available in the user's manual. But this controller dont have manual.

Nixunen   100 mW

100 mW
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Joined: Aug 27 2018 11:54am

Re: What lighting current from the KT controller?

Post by Nixunen » Apr 13 2020 9:17am

miki wrote:
Apr 13 2020 2:41am
Nixunen wrote:
Apr 12 2020 3:12pm
It is 100mA max, so 48v battery, 4.8W max. I use it only to power relay. And when using relay then you can use proper powers to lights.
Thank you very much, i.e. poor lighting on 20mA diodes or control of some MOSFET (I don't like relays). Such information should be available in the user's manual. But this controller dont have manual.
I bought my KT controllers there https://bmsbattery.com/home/1018-s12sh- ... utput.html and there was that mention. 7. Light Output current: <100ma, Light Output Voltage = battery pack voltage

but yeah there is no mention inside manual etc.

miki   100 µW

100 µW
Posts: 7
Joined: Apr 09 2020 6:06am

Re: What lighting current from the KT controller?

Post by miki » Apr 13 2020 1:25pm

Nixunen wrote:
Apr 13 2020 9:17am
miki wrote:
Apr 13 2020 2:41am
Nixunen wrote:
Apr 12 2020 3:12pm
It is 100mA max, so 48v battery, 4.8W max. I use it only to power relay. And when using relay then you can use proper powers to lights.
Thank you very much, i.e. poor lighting on 20mA diodes or control of some MOSFET (I don't like relays). Such information should be available in the user's manual. But this controller dont have manual.
I bought my KT controllers there https://bmsbattery.com/home/1018-s12sh- ... utput.html and there was that mention. 7. Light Output current: <100ma, Light Output Voltage = battery pack voltage

but yeah there is no mention inside manual etc.
Thank you so much for your reply. Indeed, here is concret information on this subject. It is a pity that there is no complete documentation. There are many unknowns in this controller, including problems with commonly encountered PAS sensors. It would be good to read the manufacturer's requirements in the user manual.

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