Protects both the motor and the control board from overloads by capping maximum output current. Adjustable Acceleration (ACCEL):
0–180 VDC (continuous variable rectified output) Rated Current Capacity: 12 ADC
controller poses a severe risk of electric shock. Always ensure the board is completely disconnected from the mains power supply and that the large DC bus capacitors have been safely discharged before touching any components. Conclusion jymc220bi schematic 2021
Depending on the specific production run of the 2021 assembly, the board leverages dual high-current MOSFETs or insulated-gate bipolar transistors (IGBTs) configured alongside freewheeling fast-recovery diodes.
External controls interface with the board via low-voltage header pins: Protects both the motor and the control board
Connect to the DC motor's armature terminals. Potentiometer (W, L, H): L (Low): Usually the zero-speed side of the pot. W (Wiper): The middle pin of the speed control dial. H (High): The full-speed side of the pot.
Most JYMC220BI designs use a or 14-pin SOP package. Based on traced 2021 PCBs, here’s the functional pinout: Conclusion Depending on the specific production run of
Through trial and error, repair forums found that the 2021 output voltage follows:
Provide a for the control terminals.