ECR Control Unit
The ecr warp let-off controller by CREALET is a compact intelligent drive for DC motors.
AN EXAMPLE OF THIS SOLUTION FAMILY:
WARP LET-OFF CONTROL SYSTEMS
DESIGNED FOR PRECISION AND DYNAMICS
OVERVIEW
The desired tension can be entered on the control unit. The target and actual values are shown on the control unit display. It processes the signals transmitted by the tension sensor and converts them for transmission to the cylinder.
The control behaviour can be adapted to the respective requirements using various parameters.
KEY ADVANTAGES
Specially developed for narrow weaving, this control meets highest demands for precision and dynamics, with its capability to adapt quickly to customer and product requirements.
Future-oriented advantages include reproducibility of production data, traceability of the production and process data, fabric data storage, and network capability. Together, these features bring the ability to drive the digital transformation in narrow weaving.
CONSTANT WARP THREAD TENSION
The key to the innovation is the realization that the warp beam does not need to be driven, as the warp tension is sufficient. So, the beam needs only to be braked to maintain correct tension. Until now, this was often accomplished with weight-loaded rope brakes. However, this meant the weights had to be changed as the beam diameter reduced. To avoid this unproductive task while also keeping warp tension constant from full to empty beam, the fully-automatic KAST ECR solution was developed.
With KAST ECR, warp tension is monitored with load cells or alternatively with indicative distance sensors. The control unit shows either the tension or the position of the pendulum. Many functions of the established Crealet BLDC control unit – highly appreciated by customers – were additionally adopted for this control method.
