GoldenMotor.com Forum

The previous link should now be working properly, and that post explains what could happen without the throttle voltage range protection being enabled.

If you have a potentiometer type throttle, raising the protection voltage to allow its maximum signal voltage (~5V) would basically have the same effect as disabling the throttle voltage range protection.
So you could still end up with the motor stuck on full throttle if any of the connections or wires on the ground circuit of the throttle failed due to fatigue or suffered physical damage etc.! 

If temporarily disabling the throttle voltage range protection cures the cutting out at full throttle, you should add some resistors and re-enable the throttle voltage range protection for safety reasons.



Alan
 

Apologies for the delayed reply but I missed the notifications for your previous replies as I'm still experiencing major grief with all of my Hotmail email accounts on my Windows PC and on my Android phone.

I'll try to check the controller settings tomorrow... but isn't there an "automatic" setup for these controllers?

There is no automatic setup for these controllers, just the ability to load the factory default settings, which may not be correct for your setup.

Tried my hand with the program... tried to up the boost, the maximum drawn current etc. but the bike now will go into protection as long as the throttle is twisted fast.  :'(

Any advice about how to make it better from dead stop without making it "stall" into protection mode?

Could the fault be happening when the throttle is being twisted fully, rather than just being twisted fast?
I'm wondering whether you may be experiencing a problem caused by the throttle signal voltage exceeding the Throttle maximum allowed voltage (V) value at full throttle, but this would usually be accompanied by the 12 beep/flash error code from the controller if this were the case. 

If your throttle is a potentiometer type (not a Hall Sensor type) it could be triggering the Throttle voltage range protection if the throttle signal voltage output exceeds 4.0V at full throttle with the default throttle voltage protection values.

If you are not sure on the throttle type, try temporarily setting the Throttle voltage range protection enable value to 2:Disable and see if it cures the problem.

Check out this post for further information on the Throttle voltage range protection values and why it should be enabled.

Alan
 
EDIT: Faulty link repaired

My setup shouldn't be much different but I have veeeeery different results 

May I please be confirmed. I bought a used Zoom Ability scooter with 4 Golden Motors and would like to find out some information on the motors plus show my Zoom to many with the updates and mods I’m currently doing.

Thank you in advance.

Hi John andto the forum.

The controller basically uses the voltage signal being output from the potentiometer (rather than resistance values) to control the motor power/speed.
The potentiometer effectively operates as a simple variable voltage divider which varies the signal voltage relative to rotary movement.

If the overall resistance of the potentiometer is too low, it could overload the +5V supply.
Conversely, if the resistance is too high, the voltage drop could reduce the amount of usable travel of the potentiometer.

I have previously suggested using a 10k Ohm potentiometer as a throttle control for the VEC controllers, which has been proven to work fine:



The 2k Ohms and 1.5k Ohms resistors shown in the diagram above are required to ensure the throttle signal voltage stays within the controller's working range:



Without these resistors, the Throttle voltage range protection is likely to be activated at both ends of the potentiometer's travel (i.e. below 0.7V or above 4.0V) causing the motor to cut out (accompanied by a 12 beep/blink error code).

If the resistors are not used, the Throttle voltage range protection enable value would need to be set to 2:Disable to prevent the 12 beep/blink error from being triggered. However, this could prove to be extremely dangerous if the ground wire going to the potentiometer suddenly failed due to vibration etc. (and became completely disconnected) while the controller was powered up, as the motor could then start running at maximum speed, regardless of the potentiometer position! 

A 5k Ohms potentiometer should work fine, as it would only be placing ~1mA load on the +5V supply, but you would probably need to use lower value resistors 1 kOhm on the +5V supply and 750 Ohms on the ground wire (with a 5k Ohms potentiometer) to keep the signal voltage within the expected range.

Alan