Efka AB620A5035 - 7.4 Start Backtack;Start Stitch Condensing

- AB620A5035
- 27 -
ATTENTION
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.
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 lifting
Upon pressing the pedal forward from lifted sewing foot, the start delay (t3) that can be set using parameter 202
becomes effective.
7.4 Start Backtack/Start Stitch Condensing
Function without control panel
Control
Single start backtack
Double start backtack
Start backtack Off
Segment 1 on
Segment 2 on
Both segments off
Key E (S2)
Start stitch condensing On; number of stitches with stitch regulator
(Parameter 001)
Start stitch condensing On; number of stitches without stitch regulator
(Parameter 000) after that number of stitches with stitch regulator
(Parameter 001)
Start stitch condensing Off
Segment 1 on
Segment 2 on
Both segments off
Key E (S2)
Function with control panel
V810/V820
Single start backtack
Double start backtack
Start backtack Off
Left-hand arrow above
key On
Right-hand arrow above
key On
Both arrows Off
Key 1
Start stitch condensing On; number of stitches with stitch regulator
(Parameter 001)
Start stitch condensing On; number of stitches without stitch regulator
(Parameter 000) after that number of stitches with stitch regulator
(Parameter 001)
Start stitch condensing Off
Left-hand arrow above
key On, right-hand arrow
above key On
Both arrows Off
Key 1
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
lifting 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. 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. The stitch regulator and counter are synchronized to position 1.
7.4.1 Speed n3 at the Start of the Seam
Function with or without control panel
Parameters
Start backtack/start stitch condensing speed
Start backtack/start stitch condensing speed can be interrupted by pedal in pos. 0
(neutral)
Start and end backtack or stitch condensing can be interrupted by pedal in pos. 0
(neutral) On/Off
(n3)
(n2A)
(StP)
112
162
164