JUKI IP-110 Type F - 6. BOBBIN COUNTER

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The number of stitches sewn by the sewing machine is detected. The detected number of stitches is decremented from the
preset counter value (in units of the number of stitches preset using function setting No. 7 "Unit of bobbin thread counting
down." When the counter value changes from the positive value to the negative value (...
→
1
→
0
→
-1), the buzzer sounds (3
sets of two consecutive blips) and the notication is shown on the popup window to alert the operator to change the bobbin.
6. BOBBIN COUNTER
1. Uneven performance may occur in accordance with the winding way of thread or the thickness of
materials and it is necessary to set the thread trimming amount with some surplus.
2. If the bobbin thread counter is used in combination with the bobbin thread remaining amount de-
tecting device, the bobbin thread counter indicates the number of detections of the bobbin thread
remaining amount detecting device. So, be sure to use the device after carefully reading the In-
struction Manual for the bobbin thread remaining amount detecting device.
1) Press switch
1
to select the bobbin thread counter.
Then press counter reset switch
2
to return the
value indicated on the bobbin thread counter to the
initial value (it has been factory-set to “0” at the time
of delivery).
2) Set an initial value using counter value setting
switches
3
and
4
.
The bobbin thread counter cannot be reset
during sewing. In this case, make the thread
trimmer actuate once.
1
2
3
4
Initial value on the bobbin thread counter
for reference
3) Once the initial value is specied, start the sewing machine.
4) When a minus value is shown on the counter, the buzzer peeps three times and the pop-up display ap-
pears, replace the bobbin thread.
5) After the bobbin thread has been properly replaced, press counter reset switch
2
to return the value on
the bobbin thread counter to the initial value. Now, re-start the sewing machine.
6) If the remaining amount of bobbin thread is excessive or the bobbin thread runs out before the bobbin
thread counter indicates a minus value, adjust the initial value appropriately using counter value setting
switches
3
and
4
.
If the remaining amount of bobbin thread is excessive ..... Increase the initial value using the “+” switch.
If the remaining amount of bobbin thread is insufcient .... Decrease the initial value using “–” switch.
* Actually, the bobbin thread counter is affected by the material thickness and the sewing speed. So, adjust
the initial value of the bobbin thread counter in accordance with the operating conditions.
The table below gives the initial setting values for
reference when the bobbin is wound with thread to the
extent that the pinhole in the outside of the bobbin case
is reached as shown in the gure on the left side.
Thread tension rate 100 %
Bobbin thread replacement warning pop-up
Thread
used
Length of thread
wound round the
bobbin
Value on bobbin
thread counter
Polyester spun
thread #50
36 m 1200
(stitch length : 3 mm)
Cotton thread #50 31 m 1000
(stitch length : 3 mm)