24
3.16 Sewing with machines using the Efka DC1550/DA321G positioning drive
The DA321G control unit contains all of the required operating elements for
switching functions and setting parameters.
It is possible to operate without an operating panel, however the seam
pr
ogramming function can no longer be used.
The V810 and V820 operating panels can also be connected to the control
u
nit and are available as optional equipment.
Seam programming can be conducted with the V820 operating panel.
For a more detailed description of the control unit please refer to the "Efka
DC1
550 – DA321G" operating manual (also visit www.efka.net).
With pedal
The pedal position is detected using a sampling detector with 16 different
lev
els.
Their meanings are listed in the table below:
Note
The following functions can be pre-programmed to correspond with the rest
po
sition of the pedal:
– Nee
dle position (down/up) and sewing-foot position (down/up)
when stopping in the seam.
– Sewing-foot position (up/down) after end of seam. (Pedal fully
backwards, then in rest position).
Fig. 22 Fig. 23
Pedal position Pedal movement Meaning
-2 Completely backwards Command for cutting the thread (end of seam)
-1 Halfway back Command for lifting the sewing foot
0 Rest position, inoperative
position
Refer to the note below
1 Slightly forwards Command for lowering the sewing foot
2 Further forwards Sew with minimum speed (1st level)
3 Further forwards Sew - 2nd speed level
: : :
13 All the way forwards Sew with maximum speed (12th speed level)
