Digital means of varying frequency or voltage to a blower motor
I am working on updating an existing product which uses a resistor network (with one potentiometer) and a phase controller (PHS230A6) to vary the speed of a blower. My goal in this redesign is to make it a more digital operation which would allow me to use one potentiometer (digital incremental encoder) to allow adjustment to the blower speed as well as other things (adjust settings on a display). I have done a lot of research and have looked into PWM options which the lead engineer has ruled out due to the complexity of the snubber design and the fact that the existing PHS230A6 and resistor network have many years of trouble free experience. Does anyone have any other ideas or suggestions on digital blower speed control? I have contacted the MFG of the PHS230A6 and they have no suggesions.
I am working on updating an existing product which uses a resistor network (with one potentiometer) and a phase controller (PHS230A6) to vary the speed of a blower. My goal in this redesign is to make it a more digital operation which would allow me to use one potentiometer (digital incremental encoder) to allow adjustment to the blower speed as well as other things (adjust settings on a display). I have done a lot of research and have looked into PWM options which the lead engineer has ruled out due to the complexity of the snubber design and the fact that the existing PHS230A6 and resistor network have many years of trouble free experience. Does anyone have any other ideas or suggestions on digital blower speed control? I have contacted the MFG of the PHS230A6 and they have no suggesions.
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