MRA 2 - Motor belt drive


The MRA 2 replaces the complete QAP assembly. Servo motors set new standards. Every drive belt is controlled, adjusted and monitored separately via the central terminal.
The MRA 2 can be used for all circular knitting machines. Set-up takes just a tenth of the previous time.

Main features

  • Closer adherence to stitch size, not otherwise possible with conventional processes
  • Improved fabric quality due to uniform yarn inlet rate for all machine series
  • Greater productivity with lower costs thanks to shorter set-up times

Technical data
Downloads (10)
Accessories (4)
Technical data
Line voltage3 x 400 V AC, other voltages possible with upstream step-down transformer
Line frequency45 – 66 Hz
Power250 VA per servo motor
Max. number of driven feeders60 MPF units per belt / servo motor
24 MER units per belt / servo motor
Max. belt speed360 m/min (with 30-tooth drive pulley)
500 m/min (with 40-tooth drive pulley)
576 m/min (with 48-tooth drive pulley)
Length of connecting cable between control unit and servo motor1,8 m or 3,0 m
MRA 2 Motor 01 big

Servo motors

Used to drive belts according to specified yarn feed rate.

MRA 2 Controll big

Control unit

Used to supply power to the max. 6 servo motors. Data from operation terminal and encoder are saved and transmitted to servo motors.

MRA 2 Kondensator big


Ensure with a mains power failure that the system continues running until the machine comes to a complete standstill, so preventing yarn breakage.

MRA 2 Encoder big


Detects cylinder movements and transmits them to the control unit in the form of pulses.


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