Brother Z-8550A 사용자 매뉴얼

 

 

Z-8550A, 8560A 

104

SPECIFICATIONS 

Treadle unit -G 

Treadle unit -H 

Operation 

Automatic presser foot lifting 
does not occur 

Automatic presser foot lifting 
occurs 

Spring position setting 

No modulation at 1

st

 step forward 

or backward 

(Figure [a] on previous page) 

Modulation at 1

st

 step forward 

and backward 

(Figure [b] on previous page) 

Function 

No. 

 

Signal 

(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 foot lifting point 

- - 

2 

(*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 arrival 
point 

S5-1 - S5-1 - 

- S5 

Maximum forward 
depression point 

14.5 12 14.5 32 

81 S6 

Backward automatic 
presser foot lifting point 

- - 

2 

(*2) 

14 

80 S7 

Thread trimming 
operation point 

5 22 5 35 

- S8 

Maximum backward 
depression point 

8 28 8 43 

(*1)  Enabled when DIP switch No. 1 is set to “ON” and memory switch No. 13 is set to “1”. 
(*2)  Enabled when memory switch No. 12 is set to “0”. 
 
•  When the connecting rod installation position is on the inside, the setting value is the amount of movement when the 

treadle is depressed forward or backward. 

•  For treadle unit -H, the point (F) where the forward depression force changes is in between S1 and S2, and the point (R) 

where the backward depression force changes is between S6 and S7. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

1841M

Depressed backward

 

Neutral

Depressed forward

Sewing 

speed