On circular knitting machines for driving MPF L and MPF K positive feeders, MPF LF friction feeders, MJS striper feeders and MER elastane rollers. The MRA 2 motor belt drive replaces the quality adjustment pulleys for driving feeders on circular knitting machines.
With the MRA2, the toothed belts are driven by servo motors. For each feeder drive belt, one servo motor is required.
An encoder detects the machine rotation/speed, translates the detected values into signals and transfers these signals via the control unit to the servo motor for control. The desired yarn feed rate of each individual drive belt can be accurately set at the operation terminal.