13-2.Standard Setting Values - Brother S-710A Service Manual

13. TREADLE UNIT ASSEMBLY

13-2.Standard setting values

Parameter Symbol
No. (diagram
below)
- S0
P2 S1
P3 S2
P4 S3
P5 S4
- S5
P1 S6
P0 S7
- S8
*1 : Enabled when DIP switch 1 is ON and memory switch 13 is ON.
*2 : Enabled when memory switch 13 is OFF.
• 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
91
Specification
Operation
Spring position setting
Function
Neutral point
Forward automatic
presser lifter operating
point
Low speed operation
starting point
Speed change starting
point
Maximum speed
reaching point
Maximum forward
depression point
Back automatic presser
lifter operating point
Thread trimmer
operating point
Maximum back
depression point
Backward
depression
Treadle unit G
Does not control automatic
presser lifter
No forward/back 1st
modulation (Figure [a]
previous page)
Length from S0
Force (N)
(mm)
0
-
3
6
S5-1
14.5
-
5
8
Forward
Neutral
depression
SL-710A
Treadle unit H
Controls automatic presser lifter
step
Forward/back 1st step modulation
on
(Figure [b] on previous page)
Length from S0
(mm)
- 0
- 2 (*1)
10 5
- 7
- S5-1
12 14.5
- 2 (*2)
22 5
28 8
Force (N)
-
10
25
-
-
32
14
35
43
1841M