Industrial Sewing Machine SADE
69
When checking the adjustment result, set "Function setting No. 90; Initial
sewing machine movement function" at "1: Initial operation - Sewing ma-
chine stops with its needle up". Then, check whether or not marker dot ❼
aligned with marker line ❽
. If they are not aligned, carry out the adjustment
again.
After checking the adjustment result, return the setting of No. 90 to the pre-
vious setting. (Initial value is "2
. Initial operation: Sewing machine turns in
the reverse direction and stop with its needle up".)
For the function setting procedure, refer to "6.10
. How to set the functions of
the SC-922" in the Instruction Manual for the SC-922.
6.12 Backstack setting
This type of setting is equal to normal SC922 driven sewing heads. Use the control
panel CP18 to make the adjustments while in “Free sew” mode.
NOTE!
During normal production cycle the PLC might block certain features
as back tack, presser foot lift and thread cutter.
6.13 Bobbin thread monitor adjustment
Alignment of the optical sensor and bobbin is critical for correct bobbin thread monitor-
ing. If however alignment is correct and the bobbin can’t be detected the sensitivity of
the monitor might have to be tuned.
When opening the bobbin monitor amplifier make sure that the screws don’t fall out. The
sensitivity potentiometer can be adjusted with a small screwdriver as shown on the pic-
ture.
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