Electronic inhibit terminals. Shorting these pins safely drops the armature output to zero without physically disconnecting the AC power. 🛠️ On-Board Calibration Trim Pots
The JYM-C220BI utilizes a topology, likely a Flyback or Forward Converter design, optimized for high efficiency and compact size. jymc220bi schematic full
This usually consists of two high-power MOSFETs or IGBTs mounted to a large heatsink. These are the most common points of failure if the lathe is overloaded. Electronic inhibit terminals