Instruction manual

EFKA AB221A/AB321A + AB222A/AB322A (BA)
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 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.
 Speed selection pedal controlled / n5 during the light barrier compensating stitches using parameter 192.
The light barrier compensating stitches can be programmed and varied using the above parameters directly on the control or
on a connected V810/V820 control panel.
For fast operator information (HIT) when using the V820 control panel, the value of the function switched on using key 3
can be displayed for approx. 3 seconds. During this time, the value can be varied directly by pressing key + or -.
When using the V820 control panel, direct access by means of the function key (key 9) is possible!
Function with control panel Parameter
Start of sewing blocked with light barrier uncovered On/Off (-F-) 008 = 3
9.35.3 Reflection Light Barrier LSM002
Sensitivity setting:
Set minimum sensitivity depending on the distance between light barrier and reflection area (turn potentiometer as far as
possible to the left).
 Potentiometer directly on the light barrier module
Mechanical orientation:
Orientation is facilitated by a visible light spot on the reflection area.
9.35.4 Light Barrier Monitoring
Function with or without control panel Parameter
Stitches for light barrier monitoring (LSc) 195
In order to check the optical and electrical function it is possible to select a number of stitches by means of parameter 195.
While these stitches are performed, the light barrier must be activated at least once. When the count is completed and the
light barrier has not been activated, the drive stops and the message A6 appears.
 Select a number of stitches that is larger than necessary for the seam.
 The function is off if the number of stitches is “0“.
9.35.5 Automatic Start Controlled by Light Barrier
This function is not possible in modes 8 and 9!
Function with or without control panel Parameter
Delay of automatic start (ASd) 128
Automatic start On/Off (ALS) 129
Light barrier sensing uncovered (LSd) 131
Start of sewing blocked with light barrier uncovered (LSS) 132
This function enables an automatic start of the sewing operation as soon as the light barrier senses the insertion of fabric.
Prerequisites for the operation:
 Parameter 009 = 1 Light barrier On
 Parameter 129 = 1 Automatic start On
 Parameter 131 = 1 Light barrier sensing uncovered
 Parameter 132 = 1 No start of sewing with light barrier uncovered
 The pedal must be kept pressed forward at the seam end.