Duerkopp Adler 550-12-12 Service Instructions Manual page 44

13.1 Sewing Drive ( 1 ) Efka DC 1600 , DA 82GV, Eprom Stand 3209
Only for
parameter
changes
Why are special adaptions necessary here?
Example: This drive is actually designed for the saddle stitch machine N291. With cl. 550-12-12 the thread
cutting for the chain stitch machine cl. 935-940-6 is generated with the thread wiper signal. For this the
signal must be extended and the switching of the foot lift delayed.
Adaptions are necessary at the following points:
44
Adaptions:
Sewing machine, sewing drive, interface, monitor controls, tape feed
and tape pull-off unit are all universal components which must be
adapted for use with cl. 550-12-12.
1 Sewing drive: Adaption of parameters necessary.
2 Interface: Adaption of control functions via switches on the
integrated circuit board.
3 Monitor controls, no service settings possible, but programming
for the special requirements of cl. 550-12-12 necessary.
4 No electrical adaptions at the tape feed unit.
5 The transport speed of the tape pull-off unites must be adapted to
the sewing speed.
Timing of the chain stitch trimmer
Tape insertion unit, assuring function timing of the foot lift and
speed reduction during insertion and cutting.
Adapting the maximum rpm to the speed of the tape advancer.
Efka
vario dc