Programming
98 Service Instructions 869-M PREMIUM - 00.0 - 07/2018
19.6.1 Setting the Thread cutter (Thread Trim) parameter
Various settings can be made for the thread cutter. The possibilities are
explained in more detail in the table.
Menu item Setting option
On/Off The thread cutter can generally be activated or deactivated; if it is
deactivated here, it can no longer be selected on the operator
level.
Speed Speed of the machine during thread cutting.
(Value range 050 – 250 [rpm])
Start Trim Position when the magnet of the thread cutter is activated.
(Value range 000 – 359)
Stop Trim Position when the magnet of the thread cutter is deactivated.
(Value range 000 – 359)
StopBottom° Needle position at bottom dead center during the seam, specified
in degrees.
(Value range 000 – 359)
After Trim Needle position after thread cutting before reversal.
(Value range 000 – 359)
Turn Back Reversal after cutting the thread is active or inactive.
(Value range: On/Off)
StopIdle° Position of the needle after thread cutting (reversal position); the
needle is set upward to reach the full lifting height, and the thread
lever is then no longer at top dead center.
(Value range 000 – 359)
Tens.Open Needle position at which the needle thread tension switches to the
value for thread cutting (Thr.Tens).
(Value range 000 – 359)
Tens.Close Position at which the standard needle thread tension is used again
after thread cutting.
(Value range 000 – 359)
Thr.Tens. Needle thread tension during thread cutting.
(Value range 00 – 50 [%])
t TensClose Delay, showing how long it takes until the standard needle thread
tension is used again.
(Value range 000 – 200 [ms])
Short Stitch Start St.
Number of short stitches at the seam start; advisable for neat
starts to sewing.
(Value range 00 – 99)
End St.
Number of short stitches at the seam end, to ensure that the
length difference between the needle thread and the hook thread
is (visually) as small as possible.
(Value range 00 – 99)
St.Length
Stitch length of the short stitches, generally between
01.0–01.5[mm].
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