Glossary
Operating Instructions 581 - 01.0 - 05/2016182
Thread tension Determines the appearance of the sewing material.
Depends on the thread and sewing material used.
There is:
• Needle thread tension
• Looper thread tension
Function button Refers to the F bu
tton.
Activates service mode (tec
hnician level).
Looper thread Identifies the thread coming from the bobbin under
t
he sewing material support.
Light barrier Helps to optically detect the seam end using a
se
nsor.
Machine function Identifies an equipment feature of a machine.
Pressure gage Measures and displays the operating pressure.
Needle thread Refers to the thread that is coming from the thread
r
eel and is guided by the needle.
Needle thread
mo
nitor
Interrupts the sewing process if the needle thread
breaks.
Thread General term for looper thread and needle thread.
Sewing speed Mathematical product of the stitch length and
nu
mber of stitches.
Sewing material Identifies the material to be sewn.
Parameter Numerical value that activates or sets a machine
f
unction.
Reduced speed Machine runs at a lower speed than set by default in
t
he factory.
Remaining thread
mo
nitor
Reports that the looper thread bobbin is empty.
Cutting mode Determines when and whether a buttonhole is to be
cu
t during the sewing process:
• CB (before the sewing process)
• CA (after the sewing process)
• 0 (Cutting mode off)
Changes the cutting diameter
.
Term Explanation
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