Chapter 2 Operation Guide
BECS-D19 User’s Manual
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bar for returning, the main shaft keeps inactive, but the frame returns along the stitch trace.
After user sets high-speed idling
, the main shaft and frame remain inactive, the stitch
number increases. After user pulls the bar for halting, the frame moves directly to the actual
position of the current stitch number. When user pulls bar for returning, the main shaft and
frame keep inactive, but the stitch number decreases. After user pulls the bar for halting, the
frame returns directly to the actual position of the current stitch number.
The positioning idling can move the frame directly forward (or backward) to a designated
position, or to the latest color-change position, or even to the latest stop-code position. In the
main screen press
and the user can select forward/backward positioning idling by
stitche number, color change code or stop code. After the system returns to the main screen,
user can pull the bar forward /backward to complete the positioning idling.
2.10 Embroidery Operation Bar and Turn Shaft Button
A. Embroidery operation bar (embroidery bar or operation bar, under the table)
Stop Status:
Pull the bar to right to start embroidery (including low-speed idling and
high-speed idling)
Pull the bar to left to return (including low-speed idling and high-speed idling)
Running Status:
Pulling the bar to the right end is to embroider slowly and releasing the bar will
resume the normal speed.
Pulling the bar to left is to stop embroidery.
B. Turn shaft button (on the operation bar case, at right side under the table)
Press the button to make the main shaft rotate one circle and stop at 100±2.5
°
.
2.11 Thread Breakage Detection and Patch Embroidery 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 upper 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 upper thread breakage; in most cases of bobbin
thread run-out, the consumption of upper thread will reduce, as a result, system will judge by
