Dc motor control rated 48V but shut off 28v applied

Thread Starter

Golftrolley

Joined Oct 2, 2023
1
Just got a Pwm dc motor control from Amazon, which rated 48v. When 14v applied, the board lit up
And was able adjust a motor speed some. Obviously, it runs very slowly for motor rated 30v. When 28v battery is connected, the controller did not lit and did not do anything. It seems shut off.....due to high voltage? But....?
Pls comment if you have relative knowledge or experience. Thanks much in advance! Im trying to make do
With this board for a battery powered golf cart/trolley control that's broken. Harry
 

SamR

Joined Mar 19, 2019
4,913
Welcome to AAC! Your message has 4 different voltages for the same motor? Please supply motor specifications and voltages available.
 

MisterBill2

Joined Jan 23, 2018
16,569
The controller might be rated for 40 volts, but in this case the current rating also matters. Did the amazon listing even mention a current rating? What is the current requirement of the motor?? Did the controller even have any data sheet with instructions describing how to use it?? Probably not, I am guessing.
Do you even have a volt meter that you know how to use?
 

MaxHeadRoom

Joined Jul 18, 2013
28,045
If this controller is for a DC brushed motor, test the controller with a lamp of suitable voltage.
Test the motor on an automotive battery and see if it runs OK.
 

MisterBill2

Joined Jan 23, 2018
16,569
Actual information about the controller will be much more useful than a link. That is assuming that the controller from amazon included any information at all.
Probably with only 14 volts the current was within the rating of the controller but with 28 volts applied the current was above the rating.
 

MisterBill2

Joined Jan 23, 2018
16,569
Just got a Pwm dc motor control from Amazon, which rated 48v. When 14v applied, the board lit up
And was able adjust a motor speed some. Obviously, it runs very slowly for motor rated 30v. When 28v battery is connected, the controller did not lit and did not do anything. It seems shut off.....due to high voltage? But....?
Pls comment if you have relative knowledge or experience. Thanks much in advance! Im trying to make do
With this board for a battery powered golf cart/trolley control that's broken. Harry
Did the controller shut off when you tried to run the motor? Or prior to trying to run the motor? Does the controller even have an OFF/ON control, or is it simply a speed controller? Did you get any information on using the controller??
 
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