HD Controller

Archie · 07-25-2011, 08:42 AM

Thanks for the info, The Curtis Controller is a MOSFET type, so you're right there. I'll use the Baking soda formula for sure. One thing that confused me at first was I didn't realize that the motor and field coil are in series. It changes the circuit completely. I believe the controller is bad because when I short M- to B- the wheels turn. All the micro switches and the Solenoid all work. The Throttle varies from 0 to 5K ohm and the throttle voltage varies at the connector when pedal is moved. Looks like the MOSFET’s are blown.
Can anyone tell me the purpose for the A2 connector on the Controller? It doesn’t seem to be necessary.

scottyb · 07-25-2011, 08:57 AM

I can try, A2 was used to absorb energy created by shifting the direction selector before stopping. It is supposed to absorb and dissipate that energy. Aftermarket controls did not have it. Hope this helps more than confuses.

Archie · 07-25-2011, 09:57 AM

That makes perfect sense, there would be a lot of induced EMF when you reverse direction.
Thanks

07-25-2011, 08:42 AM	#11
Archie Not Yet Wild Join Date: Jul 2011 Location: Ben Wheeler, (East) Texas Posts: 9	Re: HD Controller Thanks for the info, The Curtis Controller is a MOSFET type, so you're right there. I'll use the Baking soda formula for sure. One thing that confused me at first was I didn't realize that the motor and field coil are in series. It changes the circuit completely. I believe the controller is bad because when I short M- to B- the wheels turn. All the micro switches and the Solenoid all work. The Throttle varies from 0 to 5K ohm and the throttle voltage varies at the connector when pedal is moved. Looks like the MOSFET’s are blown. Can anyone tell me the purpose for the A2 connector on the Controller? It doesn’t seem to be necessary.

07-25-2011, 08:57 AM	#12
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,401	Re: HD Controller I can try, A2 was used to absorb energy created by shifting the direction selector before stopping. It is supposed to absorb and dissipate that energy. Aftermarket controls did not have it. Hope this helps more than confuses.

07-25-2011, 09:57 AM	#13
Archie Not Yet Wild Join Date: Jul 2011 Location: Ben Wheeler, (East) Texas Posts: 9	Re: HD Controller That makes perfect sense, there would be a lot of induced EMF when you reverse direction. Thanks

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Forum
a DC motor controller ( electronic speed controller)	Golf Carts and Parts
Trade 400 amp 36v Curtis controller for 500 amp or higher 48v controller	Golf Carts and Parts
Did lift kit cause controller to die? What are controller options? 95 EZGO 25864G05	Electric EZGO
Which Controller?	Electric EZGO
controller help	Electric EZGO

Today
BGW	Sponsored Links __________________ This advertising will not be shown in this way to registered members. Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum