24
(2) Trimming type (KM-790-7, 790BL-7)
A. Button usage
For semi-automatic corner sewing, the data program necessary for corner sewing need to be entered to the relevant code
number of the box in advance. Given this, when corner sewing is necessary during ordinary sewing, press the left needle or right
needle button, as desired, and step onto the pedal. The needle of the pressed button will stop in up-stop position while the other
needle will stop after sewing the preset number of stitches. Then, turn the angle of the sewing material and step onto the pedal
for the second time. The machine will stop after sewing the preset number of stitches. If the pedal is stepped once again, the up-
stopped needle automatically revokes getting back to the normal double-line sewing.
B. Using Program (semi-automatic cornering work)
※
Only
‘
E
’
type controller provides this function
※
Programming order
Operation of semi-automatic corner sewing
After reading thoroughly the program entering method in the manual for electronic part, program using the initial configuration of
“
A
”
group code numbers 30 to 36.
Reference Explanation
※
The number of stitches of the left and right needles can range from 0 to 64.
※
Once the programming is done in the above method, operating the machine in the before-mentioned semi-automatic
corner sewing method whenever necessary will repeatedly render semi-automatic corner sewing.
Reference explanation
a) When stopping the left needle bar (when sewing left turn
corner)
Turn on the lamp by pressing the trimming direction button
switch (left)
①
.
b) When stopping the right needle bar
Turn on the lamp by pressing the trimming direction button
switch (right)
②
.
c) When switching to two needle sewing
Turn off the light of the trimming direction button switches
①②
by pressing once again.
ⓐ
Call out the code number 30 and enter 1 as the initial configuration value. Entering 1 gives the semi-automatic
cornering function while entering 0 doesn
’
t.
ⓑ
Call out the code number 31 and designate the desired sewing speed. Adjustments can be made freely within the
range of 24 spm to 2040 spm.
ⓒ
According to the direction of corner sewing,
※
For left corner sewing,
Enter the number of stitches of the right needle for the first round , with the left needle in the up-stop position, into
code number 32, and second round into code number 33.
※
For right corner sewing,
Enter the number of stitches of the left needle for the first round , with the right needle in the up-stop position, into
code number 34, and second round into code number 35.
ⓓ
The data entered to code number 36 is 450 (45 seconds), which is the time that the machine waits before turning off
the power automatically in order to protect solenoid when the machine is not operated after selecting the left/right
solenoid. If adjustment needs to be made to this time interval, it may be done with in the range of 5 (0.5 seconds) to
1275 (127.5 seconds)
stop
stop
