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On & Off switch installation

On & Off switch installation

On & Off switch installation

Hi I am trying to install an on & off switch to my battery powered motor control circuit.

I want to use this switch.

By using this switch, I want to be able to cut off the power supplied to all the motors and the LED light but only 400W motor is cut off while other 24V motor and LED light is still turned on when their switch is turned on.
Could you advise me how to cut off the power to all the motors and LED light in my electric circuit?

RE: On & Off switch installation

Parallel the 24v led with the 24v motor and switch the common negative.


RE: On & Off switch installation

Hi Ted
I don't quit understand how to parallel the 24V led with 24V motor in my schematic.
Could you advise me in more detail?
I hope I could look at some picture if possible.

RE: On & Off switch installation

Does that switch have a part number and a supplier?

RE: On & Off switch installation

mingki; You have to re-figure this. What you have is not workable because it will destroy the batteries promptly. You can not draw from parts of a series string of batteries the way you propose. They will immediately go out of balance and some will under-charge and the others will badly over-charge.

You need to ONLY draw from the entire stack of batteries and then charge the entire stack of batteries.

You have three options.

1) Change the 24V motor and 24V LED to 48 Volt versions.

2) Make two separate systems with separate batteries and chargers, a 24V system and a 48V system.

3) Get a DC to DC converter that steps 48V down to 24V. That way it draws from the entire stack of batteries to run the 24V loads.

DC-DC converters like these.

The current demand of both the LED and the 24V motor are needed to make sure the DC-DC converter is properly sized.
With a DC-DC converter you may need to set it up so the converter is turned on only when a 24V load is used.

Keith Cress
kcress - http://www.flaminsystems.com

RE: On & Off switch installation

Keith, thank you so much for your help!
Now I clearly understand. I shouldn't be drawing power from a group of individual battery to operate other loads while the electric arrangement is hooked up for 48V output.
I must use 24V DC/DC converter for sure.
Could you tell me what happens if 24V load is operated with 48V load at the same time?
Because, my application requires simultaneous operations of every loads using only one battery system.

Dave, this is the link to my switch.

RE: On & Off switch installation

My Japanese is lacking.

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