Automatic Thread Tension - Brother PC8200 SUPER GALAXIE 2000 Service Manual

7.

AUTOMATIC THREAD TENSION

On former models, the operator adjusted the thread tension of the needle and bobbin threads by changing the
pressure between the tension disks.
On this model, however, the thread tension is calculated based on the horizontal and vertical movements of the
embroidery frame, and the appropriate needle thread amount is fed by the thread tension pulse motor.
This always gives you correct the thread tension regardless of thread, kinds of fabric or sewing speed.
Automatic thread tension block diagram
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