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The needle thread tension can be corrected according to the bobbin thread remaining amount.
The needle thread tension can also be set on the operation panel. The needle thread tension data is stored in mem-
ory.
1) Set "U201 Bobbin thread remaining amount for
starting correction" with numeric keypad
❶
.
Using the aforementioned set value, determine
the remaining amount of bobbin thread indicat-
ed on the bobbin counter for starting the nee-
dle thread correction.
For the setting method of the bobbin thread
counter, refer to
"6-3. Counter function p.75"
of the main body manual.
The set value can be reset to the initial value
of 0 by pressing
❷
.
2) Set "U202 Final correction amount" with the
numeric keypad
❸
.
Using the aforementioned set value, determine
the correction ratio of the needle thread ten-
sion.
The set value can be reset to the initial value
of 100 by pressing
❹
.
3) When
❺
is pressed, the entered val-
ue is confirmed and the screen is returned to
the "S113 Needle thread tension correction
screen".
The needle thread tension correction
function is available only when the bob
-
bin counter counts down the remaining
amount of the bobbin thread.
This correction function is disabled
when the bobbin counter counts up the
remaining amount of the bobbin thread.
※
Refer to the figure on the left for the relation
between "U201 Bobbin thread remaining
amount for starting correction" and "U202 Final
correction amount".
15-2.
Tension correction and remaining amount of bobbin thread
❶
❺
❷
❹
Tension correction
amount [%]
Bobbin
thread
remaining
amount [%]
U202
100
100
0
U201
0
❸
When you start to correct the needle tension in ac-
cordance with the remaining amount of the bobbin
thread, a line appears below the set value of the
thread tension setting button.
