When it has got in a slight forward feed
motion,
The horizontal feed link is as shown in the
Figure 2 and is slightly upward from the
position of 90 degrees. Correct the position
by a minus one pulse and confirm the feed
by 0 degrees.
When it has got in a slight forward feed
motion,
The horizontal feed link is as shown in the
Figure 3 and is slightly upward from the
position of 90 degrees. Correct the position
by a minus one pulse and confirm the feed
by 0 degrees.
A direction
Horizontal feed pulse motor
Horizontal feed pulse motor link
Fragmentary view taken in the A direction of an arrow (conceptual drawing)
Figure 1
Conceptual drawing of
the origin of a horizontal
feed pulse motor
+
−
−
To finally 90 °
(Caution) When the horizontal feed motor link is
positioned at 90 degrees, the horizontal feed
amount is zeroed.
(7) Various origin adjustments
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
Standard adjustment
3) Pitch motor adjustment
+ Pitch
− Pitch
0 Origin
90°
H o r i z o n t a l
feed pulse
motor
Figure 2
Conceptual drawing
of input to a horizontal
feed pulse motor
Figure 3
Conceptual drawing
of input to a horizontal
feed pulse motor
0 Origin
H o r i z o n t a l
feed pulse
motor
0 Origin
+
H o r i z o n t a l
feed pulse
motor
To finally 90 °
– 28 –
