After testing the process of low-speed pay-off, acceleration pay-off, high-speed pay-off and deceleration pay-off of the power pay-off frame, all of them can well meet the requirements of the customer, thus gaining the customer's approval. Moreover, the power pay-off frame with KE309 frequency converter has a wide speed regulation range, high steady-state accuracy, fast acceleration and deceleration, convenient operation and high reliability. It performs very well in fast speed tracking and loose line reverse winding, which greatly improves the efficiency of the power pay-off frame and completely meets the needs of customers. At the same time, the output and quality of products are increased.