The ABB YPR201A boasts four core functions: It accurately outputs SCR trigger signals, enabling smooth soft start and stop of the motor, suppressing starting inrush current, and protecting both the motor and the power grid. Its built-in PSR (Power Scaling Relay) complete control algorithm handles all logic related to current limiting, voltage ramping, current-limited start, sudden start, and parking braking. It also collects real-time data on main circuit current, temperature, and operating status, and performs real-time detection of overload, phase loss, overheating, and thyristor short circuits. A single board integrates power supply, control, and communication functions, simplifying the overall structure.

For users, a single board integrating power supply, computation, triggering, and communication modules replaces multiple separate small boards, reducing the failure rate during use. High-precision timing triggering keeps starting current fluctuations within ±5%, preventing tripping due to power grid voltage drop.