There are currently up to three types of frequency converters for up-cut circular knitting circular knitting machines:
1. Host inverter: only one function Adjust the speed of the main motor control the speed of the speed.
2. Lifting the inverter: There is only one function to adjust raise the motor speed.
3. Let-off drive: There are 2 functions to adjust the speed of the let-off motor.
Inverters are used in conjunction with motors. Of course, the circular loom must have a PLC to control all the inverters so that they can be coordinated unified.