Instruction manual

EFKA AB221A/AB321A + AB222A/AB322A (BA)
50
Function with control panel V810 V820
Automatic in the seam left-hand arrow above key On Key 3 Key 6
Automatic after thread trimming right-hand arrow above key On Key 3 Key 6
If parameter 290 = 16, with slide-in strip “7“ left-hand arrow above key On Key 9
Function with or without control panel Parameter
Automatic sewing foot with pedal forward at the seam end if light barrier or (AFL) 023
stitch counting is On
Coupled thread tension release and sewing foot lift. The function can be activated (FSP) 024
only with a thread trimmer that depends on the angle. (Modes 3, 13, 20, 22, 23, 25)
Switch-on delay with pedal in position –1 (half heelback) (t2) 201
Start delay after switching off the sewing foot lift signal (t3) 202
Time of full power (t4) 203
Duty ratio (ED) with pulsing (t5) 204
Delay after thread wiping until sewing foot lifting (t7) 206
Delay after thread trimming without thread wiper until sewing foot lifting (tFL) 211
Selection of the sewing foot lift function (FLP) 236
Upper limit ON period of sewing foot lifting 1...100 (EF-) 254
Sewing foot is lifted:
 in the seam by half heelback (position -1)
or automatically (using the S4 key on the control, left-hand LED lights up)
or automatically (using key 3 on the V810 control panel)
or automatically (using key 6 on the V820 control panel)
by pressing a key depending on the pre-selection of parameters 240...249
 after thread trimming by heelback (position -1 or -2)
or automatically (using the S4 key on the control, right-hand LED lights up)
or automatically (using key 3 on the V810 control panel)
or automatically (using key 6 on the V820 control panel)
by pressing a key depending on the preselection of parameters 240...249
automatically using light barrier with pedal forward according to the setting of
parameter 023
automatically using stitch counting with pedal forward according to the setting
of parameter 023
switch-on delay after thread wiper (t7)
switch-on delay without thread wiper (tFL)
It is possible to prevent unintentional foot lifting before thread trimming when changing from pedal position 0 (neutral) to
position -2 by setting a switch-on delay (t2) using parameter 201.
Holding power of the lifted foot:
The sewing foot is lifted by full power. Then the system switches automatically to partial power in order to reduce the load
for the control and the connected solenoid.
Set the duration of full power using parameter 203 and the partial holding power using parameter 204.
Value Duty ratio (ED) Effect
1 1 % low holding power
100 100 % high holding power (full power)
Sewing foot lowers:
 Press pedal to position 0 (neutral)
 Press pedal to position ½ (slightly forward)
 Release key for manual sewing foot lift
Upon pressing the pedal forward from lifted sewing foot, the start delay (t3) that can be set using parameter 202 becomes
effective.
CAUTION!
If the holding power is set too high, the solenoid and the control may be permanently
damaged. Please observe the permissible duty ratio (ED) of the solenoid, and set the
appropriate value according to the table below.