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-   -   48volts on all motor terminals (https://www.buggiesgonewild.com/showthread.php?t=157337)

pbearros 09-20-2019 09:11 PM

48volts on all motor terminals
 
I have been going over this 2004 precident all week. It had no batteries at all, I purchased a new set today and installed them. I discovered a couple of connections to the motor that were not according to the diagram and corrected them. I was able to get the wheels to turn briefly but only in reverse. That was regardless of the switch position, forward or reverse. One position gave a faster rotation but still in reverse.
I have double checked the wiring and disconnected the motor to check it per the manual. It checks good. The last time I tried it I heard a hum but had no rotation. In checking the motor terminals I found 48 volts on all 4 terminals.
Having the key on or off made no difference so I disconnected the batteries for the night as I had other things to do. Sorry, I have done no searches and don’t know where to start on this tomorrow. Any advice is appreciated.

NoleFan4Ever 09-20-2019 10:59 PM

Re: 48volts on all motor terminals
 
If you are getting 48v on all four (4) terminals (A1/2 & F1/2) then there is an internal short in your motor..... Did you do a continuity test?

pbearros 09-21-2019 07:45 AM

Re: 48volts on all motor terminals
 
I did and it checked out good

NoleFan4Ever 09-21-2019 08:55 AM

Re: 48volts on all motor terminals
 
Were all cables completely removed from the motor when you performed the test?

pbearros 09-21-2019 09:16 AM

Re: 48volts on all motor terminals
 
all were off.
I just checked it again. motor was fine.
I checked the leads to the motor.
48 volts on green and orange
20 volts on white
5 volts on blue
these are the same with switch on or off and for/rev in any position.
I am thinking controller but I don't want to jump to quick on that.

greg-g 09-21-2019 10:35 AM

Re: 48volts on all motor terminals
 
The controller sinks (negative) it does not source (positive) motor hooks direct to positive

NoleFan4Ever 09-21-2019 11:50 AM

Re: 48volts on all motor terminals
 
If you probe just the A1/A2 wires and get the solenoid closure you should have ~5vdc. As you increase the pedal travel it should go to 48vdc.

pbearros 09-22-2019 07:16 AM

Re: 48volts on all motor terminals
 
Quote:

Originally Posted by NoleFan4Ever (Post 1654929)
If you probe just the A1/A2 wires and get the solenoid closure you should have ~5vdc. As you increase the pedal travel it should go to 48vdc.

Do you check this with the wires connected to the motor or not

NoleFan4Ever 09-22-2019 08:08 AM

Re: 48volts on all motor terminals
 
You can leave them connected as long as you are certain there are no motor shorts.


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