Electronic Control Of The Machine; Control Of Sewing By Means Of Control Elements; Via Treadle; Via Pushbutton - Duerkopp Adler 527 Instruction Manual

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8. Electronic control of the machine

(it is valid for sub-classes equipped with stop motor)

8.1 Control of sewing by means of control elements

8.1.1 Via treadle (treadle positions and function
possibilities) (Fig. 14)
The position of the treadle is read by the reader, which can
recognise 16 levels. Its meaning is shown on the table and
see Fig. 14.
Treadle
position
-2
-1
0
1
2
3
Fig. 14
:
1 3
Note: It is possible to pre-adjust the needle position (up/down)
and foot position (up/down) by stopping in seam (introduc-
ing the treadle in neutral position). Foot position (up/down)
after seam finishing (pressing the treadle by foot fully back-
wards).
8.1.2 Via pushbutton (Fig. 15)
1
The pushbutton has got a firmly set function of bar operation
(when depressing the push button during the sewing opera-
tion, the sewn material is being reverse fed).
Fig. 15

8.1.3 Via control panel Efka V 810/V 820

(Fig. 16, 17)
These functions are standardly assigned to the pushbuttons
A, B:
A - cancelling (recalling) the bar
B - needle up/down
Note: Function of the A,B pushbuttons can be changed by
different adjustment of parameters 293,294 (see original
operating instruction Efka DA82GA).
7
Treadle
Foot full backwards Command for thread
trimming (seam finishing)
Foot slightly
Neutral position
Slightly forwards Command releasing
Continually Sewing at minimum
forwards
Continually Sewing at second
forwards
:
Fully forwards Sewing at maximum
Meaning
Commandlifting
the foot up
Note
foot
speed (1. gear)
speed level
:
speed (12. gear)