Jymc220bi Schematic 2021 -

: Adjusts the acceleration time (soft start) from 0.5 to 4 seconds.

(2-3 terminals). For connecting an external speed control knob Control Signal . Likely for external logic or safety signals Key Technical Specifications jymc220bi schematic 2021

Pro tip: The 2021 revision requires a if you leave it floating – earlier versions had internal pull-ups, but the 2021 mask change removed it to save power. : Adjusts the acceleration time (soft start) from 0

(2 terminals). Used for the field winding if you are using a shunt-wound DC motor. Potentiometer jymc220bi schematic 2021

on the largest black chip on the board? (e.g., "NE555," "STM32," "LM358") Is there a manufacturer logo on the board?

: Sets the minimum motor speed (typically 0–30% of full speed).