MRA 2 - Motor belt drive
Application
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 | |
|---|---|
| Line voltage | 3 x 400 V AC, other voltages possible with upstream step-down transformer |
| Line frequency | 45 – 66 Hz |
| Power | 250 VA per servo motor |
| Max. number of driven feeders | 60 MPF units per belt / servo motor |
| 24 MER units per belt / servo motor | |
| Max. belt speed | 360 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 motor | 1,8 m or 3,0 m |
Servo motors
Used to drive belts according to specified yarn feed rate.
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.
Capacitors
Ensure with a mains power failure that the system continues running until the machine comes to a complete standstill, so preventing yarn breakage.
Encoder
Detects cylinder movements and transmits them to the control unit in the form of pulses.
Submit your data and you will be contacted by one of our experts
