SunStar SC 7900-Series User Manual page 46

(2) Operation process of "Auto thread trimming mode 1"
feature: During pressing the pedals, the initial cutting and the final cutting is performed counting as much as the setting values
after sensor detecting.
thread trimming process
(3) Operation process of "Auto thread trimming mode 2"
feature: The sewing material is feeding as much as the stitches after detecting the sensor. When the movement stops, the initial
cutting and the final cutting start operating.
thread trimming process
(4) Operation process of "Auto thread trimming mode 3"
feature: During pressing the pedals, the value is sent to the setting value by counting the stitches after detecting the sensor.
Then the initial cutting starts working when taking your foot off the pedal. After that, the sewing material is automatically
feeding as fast as the counted values. When the feed is over, the final cutting starts operating.
thread trimming process
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