Operation Manual

6.15.2 By the key panel 9880 867101

The function of the keys on the keypad depends on the type of the

drive used and on the sewing machine equipment. Generally, the

functions of the keys and the related symbols (pictograms) under the

keys may be changed, but the particular drive must support the

required function. Detailed information about the function setting is

included in the Operating manual and Parameter sheets of the

DAC/Efka drives.

The below table shows an example of typical factory-arranged key

pads:

Key Function

1 Manual sewing backward

The machine sews backward stitches as long as the key is being pushed.

2 Needle positioning to the upper or lower position

By parameter F-242 (DA321) the following key functions can be defined:

1 = needle up/down

2 = needle up

3 = one stitch

(factory setting is 1)

The key function for a DAC drive is defined by parameter t5122.

3 Calling out/cancellation of the start or end bartack

If the start and end bartack are switched on, the following bartack is switched off by

pressing the pushbutton.

If the start and end bartack are switched off, the following bartack is switched on by

pressing the pushbutton.

4 Switching the stitch length

The function of the key can be defined via parameter F-250 (DA321).

1 = by pressing the key, the stitch length can be switched between two values

set in advance

4 = by pressing the key, the stitch length can be changed in a smaller value, a stitch will be

sewn and the machine will be switched over to its original (greater) stitch length.

The key function for a DAC drive is defined by parameter t5123.

5 Switching on/off the supplementary thread tension

- only CLASSIC machines with pneumatic control

If the key is lit up:

Supplementary thread tension is switched on (tension discs closed).

If the key is not lit up:

Supplementary thread tension is switched off (tension discs closed).

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