Pfaff 521 Instruction Manual page 22

Controls
End backtacks
Needle position
Foot position after stop
Foot position after trimming
Thread trimmer
Speed
Reverse sewing
Program interruption
7 - 6
By pressing this key, the backtacking function at the end of the seam (end backtacks) is
switched on or off. The number of reverse stitches (C) or forward stitches (D) can be
changed in each case by pressing the +/- key underneath. To convert from double
backtacks to single backtacks the relevant number of stitches for the seam segment is
set at zero.
When entering the code number, the key corresponds to the number 2.
By pressing this key the function "Needle raised after sewing stop" is switched on or off.
When the function is switched on, the needle positions at t.d.c. after sewing stops.
When entering the code number, the key corresponds to the number 3.
By pressing this key the function "Foot raised after sewing stop" is switched on or off.
When the function is switched on, the sewing foot is raised after sewing stops.
When entering the code number, the key corresponds to the number 4.
By pressing this key the function "Foot raised after thread trimming" is switched on or off.
When the function is switched on, the sewing foot is raised after sewing thread
trimming.
When entering the code number, the key corresponds to the number 5.
By pressing this key the thread trimming function is switched on or off.
When entering the code number, the key corresponds to the number 6.
With this key for each seam section a maximum speed can be set, which is only
activated in the relevant seam section.
When entering the code number, the key corresponds to the number 7.
By pressing this key the reverse sewing function is switched on or off.
When entering the code number, the key corresponds to the number 8.
By pressing this key the automatic processing of a sewing program is interrupted. The
stitch count function is switched off and some of the sequences are changed.
When entering the code number, the key corresponds to the number 9.