Chapter 2 Operation Instruction
low speed) and pull the bar to left to return (including idling in high or low speed)
Running status: pull the bar to the right end to embroider slowly and release to
normal speed and pull the bar to left to stop embroidery.
2.
Turn Shaft Button (on the operation bar case, under the table at right side)
Press the button to make the main shaft rotate one cycle and stop at 100±2.5
°
.
2-11
Thread-breakage detection and mending switch
Based on different working principles, thread-breakage detection devices
are divided into three types: thread take-up spring type, thread winding wheel
(chopper wheel) type and mixed type.
For thread take-up spring type, it warns thread-breakage by detecting
connection of take-up spring and contact point. When thread breaks, the spring
will close to the contact point. In normal condition, this detection device reacts
sensitively to face thread breakage, but can hardly detect bobbin thread run-out. In
case you change the embroidery thread, or thread tension changes, you need to
adjust spring pressure between the take-up spring and contact point. When the
spring pressure is too large, there will be False Positive; when the spring pressure
is too small, there will be False Negative.
For thread winding wheel type, it judges thread-breakage by checking the
winding wheel angle. It reacts very sensitively in case of face thread breakage; in
most cases of bobbin thread run-out, the consumption of face thread will reduce,
as a result, system will judge by statistic method and send out warning. Though it
can almost avoid False Positive, it is not as sensitive as the spring-type.
For the mixed type method, these two detection methods can complement
each other with their advantages, which results in sensitive and stabilized
detecting effect.
BECS-D16 computerized embroidery machine owner’s manual
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Summary of Contents for BECS-D16
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