On & Off switching mechanism required

[mingki]

Hi guys.
I am using the following driver to control a BLDC motor.

I use 10k ohm variable resistor to control the speed of my motor and I should be able to hold the motor at a certain position with heavy loads. To do that, the manufacturer of the driver told me to connect pin 6(Motor Stop) to pin 8(GND) when the variable resistor is at its lowest(Motor stop and hold the loads) and disconnect pin 6(Motor Stop) from pin 8(GND) as soon as the variable resistor is rotated.
What is the best and simplest way to connect and disconnect pin 6 with pin 8 according to the variable resistor rotation?

 

[TugboatEng]

There are cam lobes you can set screw on to the shaft of your potentiometer and used to actuate a lever type limit switch with a roller tipped lever.

https://www.amci.com/industrial-aut...ion-tutorials/what-programmable-limit-switch/

You could also a programmable switch that transfers when the signal from the pot or a second pot on the same shaft exceeds a certain level. Stacked pots get very expensive, though.

 

[mingki]

Thank you.
I want to replace my variable resistor with this thumb throttle.

So basically, I want to make pin 6(Motor Stop) and pin 8(GND) to be connected when I let go of the thumb throttle and then I want pin 6 and pin 8 to be disconnected when I push the thumb throttle.
Could you tell me the most suitable way of creating this mechanism?