Operating instructions

3.9 Switching On the Light Barrier
By pressing this key the light barrier is switched on.
The light barrier recognizes the seam beginning and seam end on
flaps.
The light barrier cannot be activated in the operating modes for piping
reversing and zippers.
–
Press the key.
The lit LED above the key signals, that the light barrier is switched
on.
745-22;-23:
Instead of the sewing lengths
L1, L2, L3,
the display
shows "
LX
".
745-24:
Through repeated pressing of the key, the display
shows the light barrier seams
LX1, LX2
and
LX3
in
sequence.
–
To switch off the light barrier press one of the keys
L1
,
L2
or
L3
.
CAUTION !
When sewing with the light barrier, the flap must be placed
between
the two positioning points.
If the flap is positioned in front of the forward or extends beyond the
rear positioning point, the error message
"LS"
appears in the display.
3.10 Correcting the Seam Beginning and Seam End
This key calls up the correction function for seam beginning and seam
end.
The correction of seam beginning (NA) and seam end (NE) occurs for
the sewing lengths
L1, L2, L3
and for the light barrier seams
LX
(745-22;-23) and
LX1, LX2, LX3
(745-24).
By changing the values for NA and NE the corner knife action is
appropriately adjusted for sewing with the light barrier.
–
Press the function key.
The set values for NA and NE are shown in the display.
–
Increase or decrease the value for NA in steps by pressing the
"
+
/
-
" keys.
Minimum: 0
Maximum: 99
Median value: 50 (no correction)
Step distance: 1 cycle = 0.085 mm
–
Press the function key again.
This switches from NA to NE.
–
Increase or decrease the value for NE in steps by pressing the
"
+
/
-
" keys.
–
Complete the correction procedure by calling up the selected
sewing length.
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