april
Member
The above stepper motor comes from a generator and controls the diesel pump which fuels the injector
It appears not to be working and ,as replacement parts for these chinese machines are difficult and time consuming to source, I wonder if someone could guide me so I might at least check that it does not work first, before I attempt to renew it. If it works I can move on to look for other causes.
I have Arduino boards available and C programming ability, but I want to approach this carefully knowing something about this part and feeding it 8 volts means a separate power source anyway. Is there a quick easy test to see if it is responsive ?
The diesel motor itself starts and revs to full revs then cuts itself off. It seems to be checking that the servo turns the fuel pump down so the controller has control of the speed and shuts itself off when it finds it does not . I did not see the servo move at all in this time frame. When running properly I can see the servo moving.
Oh and I should add its a four wire job . Red and black for power white and blue for pulse and position sense I assume.
It appears not to be working and ,as replacement parts for these chinese machines are difficult and time consuming to source, I wonder if someone could guide me so I might at least check that it does not work first, before I attempt to renew it. If it works I can move on to look for other causes.
I have Arduino boards available and C programming ability, but I want to approach this carefully knowing something about this part and feeding it 8 volts means a separate power source anyway. Is there a quick easy test to see if it is responsive ?
The diesel motor itself starts and revs to full revs then cuts itself off. It seems to be checking that the servo turns the fuel pump down so the controller has control of the speed and shuts itself off when it finds it does not . I did not see the servo move at all in this time frame. When running properly I can see the servo moving.
Oh and I should add its a four wire job . Red and black for power white and blue for pulse and position sense I assume.
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