Instruction manual

6.2.2 The influence of the stroke adjustment on the supplementary thread tensioner and the Speedomat,

for subclass 669-180312

Button 1 (see Chapter 6.14) on the machine’s r ow of buttons can be

used to activate or deactivate the supplementary thread tension at any

time. The parameter F-255 must be set to “7" for this to work.

Parameter Max. stroke Stroke adjustment

setting. adjustment via knee button

viadialwhentheHP

speed from parameter

F-117 is reached

(Speedomat)

F-197 = 0 1 1

F-197 = 1 0 1

F-197 = 2 1 (*) 0

F-197 = 3 0 0

(*) If the stroke adjustment (max.) is activated via the knee switch and

the HP speed (from parameter F-117) has been reached by the

“Speedomat”, then the supplementary thread tensioner is automatically

activated.

0 = Supplementary thread tension closed mechanically

1 = Supplementary thread tension opened mechanically

If the supplementary thread tensioner is closed, the state of the

stroke adjustment does not change.

If the machine is turned off, the supplementary thread tension

remains at its previously set state.

Initial control-box settings for the automatic stepped reduction of the

stitch count (Speedomat), using the dial for the height of the alternating

feed stroke:

Parameter 188

Step 01-21 Entire Speedomat range

Step 01-10 Maximum allowed stitch count, parameter

F-111 = 3000 min

Step 11-18 Linear step-wise reduction of the maximum

stitch count (Speedomat)

Step 19-21 Maximum allowed stitch count, parameter

F-117 = 1.800 min