ZD series AC asynchronous spindle servo driver is one of matching products for CNC systems developed by KND company. This product has stable capability, abundant functions, and perfect overload capacity. Matching with ZJY series spindle motors of KND company can realize excellent performance. It can also match motors of other companies. Perfect self-learning function can make users free from complicated parameter setting. Connecting KND CNC system by KND serial servo bus (KSSB) interface can realize checking parameters of spindle driver and diagnosing status of spindle driver on CNC system, as well as performing self-learning, reset and reboot operations.