Instruction manual

EFKA AB221A/AB321A + AB222A/AB322A (BA)

The following settings are possible with parameter 236:

236 = 0 Sewing foot lifting is possible from all positions.

236 = 1 Sewing foot lifting is possible only from position 2.

236 = 2 Sewing foot lifting is stored in pedal position –1 or –2. The storing can be undone by pressing the pedal

slightly forward.

See List of Parameters chapter "Timing Diagrams"!

9.4 Start Backtack/Start Stitch Condensing

Function without control panel Control

Single start backtack LED 1 On Key S2

Double start backtack LED 2 On

Start backtack Off both LEDs Off

Start stitch condensing On; number of stitches with stitch regulator LED 1 On Key S2

(parameter 001)

Start stitch condensing On; number of stitches without stitch LED 2 On

regulator

(parameter 000), after that number of stitches with stitch regulator

(parameter 001)

Start stitch condensing Off both LEDs Off

Function with control panel V810/V820

Single start backtack left-hand arrow above key On Key 1

Double start backtack right-hand arrow above key On

Start backtack Off both arrows Off

Start stitch condensing On; number of stitches with stitch regulator left-hand arrow above key On Key 1

(parameter 001)

Start stitch condensing On; number of stitches without stitch right-hand arrow above key On

regulator

(parameter 000), after that number of stitches with stitch regulator

(parameter 001)

Start stitch condensing Off both arrows Off

The start backtack/start stitch condensing starts by pressing the pedal forward at the beginning of the seam. From lifted

sewing foot the backtack is delayed by the time t3 (start delay after switching off the sewing foot lift signal). Start backtack

as well as start stitch condensing are executed automatically at speed n3. They cannot be interrupted. If softstart is running

parallel, the respective lower speed is prevailing. If backtack synchronization (parameter 298) is off, the stitch regulator

will be synchronized to position 1. The stitch regulator will be switched off after completion of the stitch count (parameter

001) and the speed n3 after a delay time t1. Then pedal control is returned. Counting is synchronized to position 1.

9.4.1 Speed n3 at the Start of the Seam

Function with or without control panel Parameter

Start backtack/start stitch condensing speed (n3) 112

Start backtack/start stitch condensing speed can be interrupted by pedal in pos. 0 (neutral) (n2A) 162

Start and end backtack or stitch condensing can be interrupted by pedal in pos. 0 (neutral) (StP) 164

On/Off

When programming 3-digit or 4-digit parameter values on the control, the 2-digit or 3-digit values displayed must be

multiplied by 10.