Brother International S-7200B Service Manual - Page 64

Standard setting values, Treadle unit H

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11. TREADLE UNIT ASSEMBLY 11-2. Standard setting values Function No. Symbol (diagram below) Specifications Operation Spring position setting Treadle unit G Does not control automatic presser lifter No forward/back 1st step modulation (Figure [a] on previous page) Treadle unit H Controls automatic presser lifter Forward/back 1st step modulation (Figure [b] on previous page) Function Length (mm) from S0 Force (N) Length from S0 (mm) Force (N) - S0 Neutral point 0 - 0 - 82 S1 Forward automatic presser - lifter operating point - 2 (NOTE 1) 10 83 S2 Low speed operation starting point 3 10 5 25 84 S3 Speed change starting point 6 - 7 - 85 S4 Maximum speed reaching S5-1 - S5-1 - point - S5 Maximum forward depression point 14.5 12 14.5 32 81 S6 Back automatic presser - lifter operating point 80 S7 Thread trimmer operating 5 point - S8 Maximum back depression point 8 - 2 (NOTE 2) 14 22 5 35 28 8 43 (NOTE 1) Setting is enabled when DIP switch 1 is set to ON and Function No. 13 is set to "1". (NOTE 2) Setting is enabled when Function No. 12 is set to "0". ・ When the connecting rod installation position is on the inside, the measurement value is the amount of movement of the treadle from the neutral position to the forward position and to the backward position. ・ For treadle unit -H, the point of change (F) in the forward depression force is between S1 and S2, and the point of change (R) in the backward depression force is between S6 and S7. Speed Backward depression Neutral Forward depression 57 S-7200B 1841M

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S-7200B
11. TREADLE UNIT ASSEMBLY
57
11-2. Standard setting values
Specifications
Treadle unit G
Treadle unit H
Operation
Does
not
control
automatic
presser lifter
Controls automatic presser lifter
Spring position setting
No
forward/back
1st
step
modulation
(Figure [a] on previous page)
Forward/back
1st
step
modulation
(Figure [b] on previous page)
Function
No.
Symbol
(diagram
below)
Function
Length
from
S0
(mm)
Force (N)
Length
from
S0
(mm)
Force (N)
-
S0
Neutral point
0
-
0
-
82
S1
Forward automatic presser
lifter operating point
-
-
2 (NOTE 1)
10
83
S2
Low speed operation
starting point
3
10
5
25
84
S3
Speed change starting point
6
-
7
-
85
S4
Maximum speed reaching
point
S5-1
-
S5-1
-
-
S5
Maximum forward
depression point
14.5
12
14.5
32
81
S6
Back automatic presser
lifter operating point
-
-
2 (NOTE 2)
14
80
S7
Thread trimmer operating
point
5
22
5
35
-
S8
Maximum back depression
point
8
28
8
43
(NOTE 1) Setting is enabled when DIP switch 1 is set to ON and Function No. 13 is set to “1”.
(NOTE 2) Setting is enabled when Function No. 12 is set to “0”.
・
When the connecting rod installation position is on the inside, the measurement value is the amount of movement of the
treadle from the neutral position to the forward position and to the backward position.
・
For treadle unit -H, the point of change (F) in the forward depression force is between S1 and S2, and the point of change
(R) in the backward depression force is between S6 and S7.
Speed
Backward depression
Neutral
Forward depression
1841M