Adjusts the voltage drop compensation to maintain constant speed under varying mechanical loads.
Turn the main speed knob to 100%. Adjust the MAX trimpot until the motor reaches its rated top speed (use a tachometer if safety permits), ensuring you do not exceed the motor's voltage rating.
Threshold adjusters that set the upper and lower bounds of the motor's RPM. IR (IR Comp):
Protects the power bridge against transient voltage spikes. Fuse: Protects the entire board from overcurrent.
Connects directly to the DC brush motor. jymc220bi schematic full
Since a is rare, the next best thing is the connector voltage map. Most JYMC220BI boards have a flat ribbon connector or a pin header going to the main logic board. Typically, you will find:
Sometimes used for Field winding (if using a Shunt motor), otherwise often unused in PM motor setups. 4. Troubleshooting and Repair
The board uses technology to regulate motor speed by varying the phase of the trigger pulse. It features five main trimpots for fine-tuning performance: MIN : Sets the minimum motor speed. MAX : Sets the maximum motor speed.
The JY-MC220BI typically breaks out the necessary pins for SPI communication and control. The standard pin header usually consists of 8 or 9 pins. Adjusts the voltage drop compensation to maintain constant
While component numbers vary between board revisions, the JYMC series follows a strict structural blueprint:
Let me know which approach fits your situation.
The JYMC-220B-I Go to product viewer dialog for this item.
(e.g., no output, overcurrent error, blown fuse), describe the symptoms and I can guide you through testing the common failure points without a full schematic. Threshold adjusters that set the upper and lower
: Measures voltage changes across a low-resistance shunt resistor in the armature line.
Disclaimer: Repairing AC-to-DC converters involves high voltages and poses a risk of electric shock or fire. Only qualified personnel should attempt repairs.
The JYMC-220B-I is a 230VAC, 12A DC brush motor speed controller commonly used in mini lathes like the CJ0618 and WM210V, featuring a design that regulates motors between 400W and 750W. The circuit includes onboard trimpots for adjusting acceleration (ACCEL), minimum/maximum speed, and IR compensation for load stability. Find detailed manuals at Manuals.plus Amazon.com