My work has a welder that the control board that controls the wire feed is no longer functioning.
I have tested motor with drill battery and works fine.
As per tech support I replaced a transistor Q8 on board which they said usually is the one that goes bad, but still not getting power out to the wire feed motor when trigger is pressed.
The wire feed motor is 4vdc to 24vdc.
The gas control valve is 24vac, which is activated when trigger is pulled and also used to send dc voltage to motor from the control board.
I now have a separate dc power supply for the motor.
I want to use the 24vac from gas control valve when trigger is pulled to turn a switch or relay that will allow dc power to flow to motor.
Can anyone help me, I am hoping that this is a simple circuit to build.
I have attached the control board schematic for the welder in pdf format.
thank you
Douglas
I have tested motor with drill battery and works fine.
As per tech support I replaced a transistor Q8 on board which they said usually is the one that goes bad, but still not getting power out to the wire feed motor when trigger is pressed.
The wire feed motor is 4vdc to 24vdc.
The gas control valve is 24vac, which is activated when trigger is pulled and also used to send dc voltage to motor from the control board.
I now have a separate dc power supply for the motor.
I want to use the 24vac from gas control valve when trigger is pulled to turn a switch or relay that will allow dc power to flow to motor.
Can anyone help me, I am hoping that this is a simple circuit to build.
I have attached the control board schematic for the welder in pdf format.
thank you
Douglas
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