– 35 –
④
Needle up/down switch function changeover function (Function setting No. 22)
The needle up/down switch function can be changed over between the needle up/down compensation and
one stitch compensation.
n.
2
2
0 : Needle up / down compensating stitching
1 : One stitch compensating stitching
⑤
Setting of the suction time of the back-tack solenoid (Function setting No. 29)
This function can change the suction time of the back-tack solenoid. It is effective to decrease the value
when the heat is high.
(Caution) When the value is excessively decreased, failure of motion or defective pitch will follow.
Be careful when changing the value.
n.
9
2
Setting range : 50 to 500 ms <10 / ms>
⑥
Function of reverse feed stitching on the way (Function setting Nos. 30 to 33)
Functions of the limit of number of stitches and thread trimming command can be added to the touch back
switch on the sewing machine head.
Function setting No. 30 Function of reverse feed stitching on the way is selected.
n.
0
3
0 : OFF Normal back-tack function
1 : ON Function of reverse feed stitching on the way
Function setting No. 31 Number of stitches performing reverse feed stitching is set.
n.
1
3
Setting range : 0 to 19 stitches
Function setting No. 32 Effective condition of reverse feed stitching on the way
n.
2
3
0 : OFF Inoperative when the sewing machine stops. (Reverse feed stitching on the way
functions only when the sewing machine is running.)
1 : ON Operative when the sewing machine stops. (Reverse feed stitching on the way
functions both when the sewing machine is running and stops.)
(Caution) Either condition is operative when the sewing machine is running.
Function setting No. 33 Thread trimming is performed when reverse feed stitching on the way is com-
pleted.
n.
3
3
0 : OFF Without thread trimming
1 : ON Thread trimming is executed.
Application
Function setting
Output function
No.30 No.32 No.33
❶
0
0 or 1 0 or 1 It works as normal touch-back switch.
❷
1
0
0
When operating touch-back switch at the time of depressing front part of the pedal,
reverse feed stitching as many as the number of stitches specified by the function
setting No. 31 can be performed.
❸
1
1
0
When operating touch-back switch at the time of either stop of the sewing machine
or depressing front part of the pedal, reverse feed stitching as many as the number
of stitches specified by the function setting No. 31 can be performed.
❹
1
0
1
When operating touch-back switch at the time of depressing front part of the pedal,
automatic thread trimming is performed after reverse feed stitching as many as the
number of stitches specified by the function setting No. 31 has been performed.
❺
1
1
1
When operating touch-back switch at the time of either stop of the sewing machine
or depressing front part of the pedal, automatic thread trimming is performed after
reverse feed stitching as many as the number of stitches specified by the function
setting No. 31 has been performed.
