Operation
30 Operating Instructions 669 - 00.0 - 08/2019
4.6.3 Function of the additional thread tension
depending on the stroke adjustment and the
Speedomat (optional)
This option applies to the subclass 669-180312.
Button on the machine’s row 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.
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.
Parameter
setting
Max. strike adjustment
Stroke adjustment via
knee button
via adjusting wheel
when the HP 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 mechanicall
1 = Supplementary thread tension opened mechanically
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