- AB620A5035
- 44 -
7.24 Free Seam and Seam with Light Barrier
Function
Parameters
Positioning speed
Upper limit of maximum speed
Limited speed according to setting of parameter
142
Lower limit of maximum speed
Speed mode free seam
(n1)
(n2)
(n12)
(n2_)
(SFn)
110
111
118
121
142
Speed control for the free seam and the seam with stitch counting can be selected using the speed mode.
142 =0
Execution at pedal controlled speed
142 =1
Execution at fixed speed n12, when pressing the pedal forward (position >1)
142 =2
Execution at limited speed n12, when pressing the pedal forward (position >1)
142 =3
Only for the seam with light barrier:
-
Automatic execution at fixed speed after having pressed the pedal once.
-
The seam end is initiated by light barrier.
-
The procedure can be interrupted by heelback (-2).
-
If the light barrier is not on, speed as with parameter setting
142 = 0
.
When using a control panel, the maximum speed is displayed after power on and thread trimming and can be
varied directly using the
+/-
keys on the control panel. The setting range lies between the values of parameters
111
and
121
.
7.25 Light barrier
Function
with
or
without
control panel
Parameters
Light barrier On/Off
009
Function
with
control panel
V820
Light barrier covered/uncovered On
Light barrier uncovered/covered On
Light barrier Off
Right-hand arrow above key On
Left-hand arrow above key On
Both arrows Off
Key 3
The light barrier function at the input of socket B18/8 is active only if parameter value
239 = 0
.
7.25.1 Speed after Light Barrier Sensing
Function with or without control panel
Parameters
Speed after Light Barrier Sensing
(n5)
114
At the end of the light barrier stitch count at speed n5, the end count for the tape cutter (c4) is continued under
pedal control. If the stitch count for the tape cutter is set to 0 and the light barrier balancing stitch count set until
the tap cutter is introduced, then the count is done independently of the pedal at a speed of n5.
7.25.2 General Light Barrier Functions
Function
Parameters
Light barrier compensating stitches
Number of light barrier seams
Light barrier sensing uncovered/covered
Start of sewing blocked/unblocked with light barrier uncovered
Light barrier seam end with thread trimming On/Off
Speed of the light barrier compensating stitches
LS
(LSn)
(LSd)
LSS
(LSE)
PLS
004
006
131
132
133
192
After sensing the seam end, the compensating stitches are counted at light barrier speed.
Suspension of the procedure with pedal in pos. 0 (neutral). Interruption of the procedure with pedal in
pos. -2.
The thread trimming operation can be disabled using parameter
133
, regardless of the setting of key
5
on
the V820 control panel. Stop in the basic position.
Programming of max. 15 light barrier seams depending on the setting of parameter
006
with stop in the
basic position. Thread trimming after the last light barrier seam.
Light barrier sensing uncovered or covered at the seam end can be selected using parameter
131
.
Start blockage with light barrier uncovered programmable using parameter
132
.
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