JUKI SC-921 Instruction Manual page 28

Discrete control box
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53 Compensation
Compensation of releasing the solenoid for reverse feed stitching
of solenoid-
when reverse feed stitching at the end of sewing is performed.
off timing of
reverse feed
stitching at the
end of sewing
55 Foot lift after
Function of lifting presser foot at the time of (after) thread trimming
thread trimming
0 : Not provided with the function of automatic lifting of work-
clamp after thread trimming
1 : Provided with the function of lifting presser foot automatically
after thread trimming
56 Reverse
Function of reverse revolution to lift the needle at the time of (after)
revolution to lift
thread trimming
the needle after
0 : Not provided with the function of reverse revolution to lift the
thread trimming
needle after thread trimming
1 : Provided with the function of reverse revolution to lift the nee-
dle after thread trimming
58 Function
Function of holding predetermined upper/lower position of the
of holding
needle bar
predetermined
0 : Not provided with the function of holding predetermined up-
upper/lower
per/lower position of the needle bar
position of the
1 : Provided with the function of holding predetermined upper/
needle bar
lower position of the needle bar (holding force is weak.)
2 : Provided with the function of holding predetermined upper/
lower position of the needle bar (holding force is medium.)
3 : Provided with the function of holding predetermined upper/
lower position of the needle bar (holding force is strong.)
59 Function of
This function can specify the sewing speed of reverse feed stitch-
Auto/Manual
ing at the start of sewing.
change-over
0 : The speed will depend on the manual operation by pedal, etc.
of reverse feed
1 : The speed will depend on the specified reverse feed stitching
stitching at the
speed (No. 8).
start of sewing
60 Function of stop
Function at the time of completion of reverse feed stitching at the
immediately
start of sewing
after reverse
0 : Not provided with the function of temporary stop of the sewing
feed stitching
machine at the time of completion of reverse feed stitching at
at the start of
the start of sewing
sewing
1 : Provided with the function of temporary stop of the sewing
machine at the time of completion of reverse feed stitching at
the start of sewing.
64 Change-
Initial speed when starting condensation stitch or EBT
over speed of
condensation
stitch or EBT
(end back tack)
70 Function of soft-
Presser foot is slowly lowered.
down of presser
0 : Presser foot is rapidly lowered.
foot
1 : Presser foot is slowly lowered.
71 Double reverse
Effective/ineffective of double reverse feed stitching is changed
feed stitching
over. (to be used only with CP-18)
function
0 : Ineffective
1 : Effective
72 Sewing
Current limit at the startup of sewing machine is specified.
machine startup
0 : Normal (Current limit is applied during startup)
selecting
1 : Rapid (Current limit is not applied during startup)
function
73 Retry function
This function is used when needle cannot pierce materials .
0 : Retry function is not provided.
1 - 10 : Retry function is provided.
1 : Needle-bar returning force before operating the retry function:
1 (small) - 10 (large)
74 With/without
With/without thread trimmer for MF is selected.
*
thread trimmer
0 : Not provided with the tread trimmer
for MF
1 : Provided with the thread trimmer
76 One-shot
One-shot operation up to the material end is specified. (to be used
function
only with CP-18)
0 : One-shot operation is not performed.
1 : One-shot operation is performed.
84 Initial motion
Suction motion time of presser foot lifting solenoid
suction time
*
of presser foot
lifting solenoid
87 Function of
Pedal curve is selected. (Improving pedal inching operation)
pedal curve
selection
Number of rotations
90 Initial motion up
Automatic UP stop function is set immediately after turning ON the
stop function
power.
0 : off
1 : on
* Do not change the set values with asterisk (*) mark as they are functions for maintenance. If the standard set value set at the time of
delivery is changed, it is in danger of causing the machine to be broken or the performance to be deteriorated. If it is necessary to
change the set value, please purchase the Engineer's Manual and follow the instructions.
Description
2
0
1
Pedal stroke
– 26 –
Setting
Indication of function setting
range
–36 to 36
5 3
(10°)
0/1
5 5
0/1
5 6
0 to 3
5 8
0/1
5 9
0/1
6 0
0 to 250
6 4
(sti/min)
0/1
7 0
0/1
7 1
0/1
7 2
0 to 10
7 3
0/1
7 4
0/1
7 6
50 to 500
8 4
(ms)
0/1/2
8 7
9 0
0/1
Ref.
page
1 8
34
1
35
0
35
0
35
1
35
0
35
1 8 0
0
36
1
0
1
36
1
0
28
2 5 0
36
0
36
1
37

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