Reply with QuoteWhat is your 12vdc power source for the pump and where does it originate?
Al.
Re: Driving coolant pump with VFD
correct. i have a separate 12v power brick, and have actually switched bricks thinking it was the brick. i was doing some reading and i venture to guess that the "cheap chinese vfd" is throwing emi all over.
Re: Driving coolant pump with VFD
What is your 12vdc power source for the pump and where does it originate?
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Re: Driving coolant pump with VFD
its a samsung sha0801 12v, 3.34 amp power supply.
Re: Driving coolant pump with VFD
What pump?
Ken
Re: Driving coolant pump with VFD
pump is Laing DDC-pump 12V DDC-1T Plus
I am leaning towards putting a capacitor across the POS and neg leads at the pump to smooth out any induced current that might be entering the wires for the pump. Will be purchasing a shielded wire for the cable as well.
I came to this conclusion based off the pumps behavior when I clipped my voltmeter across the leads to check the voltage and it started behaving normally.
