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(4) Setting of the thread unraveling strength
< Thread unraveling
strength setting screen >
When you press
Ⓓ
on the AW setting item
list screen, the thread raveling strength setting screen is displayed.
The initial value of the thread raveling strength can be set with the
memory switch U357.
If you want to save the thread raveling strength set with this AW
setting function, the saving operation to be carried out will differ
according to the destination you want to save it.
1. Since a long time is required to carry out the thread raveling operation, the set value
should be minimized as long as the thread is allowed to wind on the bobbin. If this set
value is large, bobbin winding will require a long time to disable sewing until the bob
-
bin changing is completed.
2. Do not use the thread raveling operation in any case other than using bonded thread
(coating thread). If this operation is enabled when using any other thread, the thread
will fluff and be entangled on the bobbin. In such a case, the thread remaining on the
bobbin may not be totally removed.
< In the case of saving the setting on the main body >
In the case the pattern type is the individual sewing:
To be saved with respect to each pattern data
In the case the pattern type is the cycle sewing:
To be saved with respect to each cycle data
< In the case of saving the setting on a medium >
In the case the pattern type is the individual sewing:
Not to be saved
In the case the pattern type is the cycle sewing:
Not to be saved
Thread unraveling strength can be set in five different stages as 1 to 5 on the thread unraveling strength
setting screen. If "0" is entered for the thread unraveling strength, thread unraveling will not be carried
out.
Bonded thread (such as coating thread) that is hardened with resin cannot be smoothly tangled on a
bobbin. In such a case, enable the thread raveling function to ravel the thread end.
For the thread raveling operation, the reference set value of the raveling strength is "1". The thread rav-
eling operation is carried out in repetition according to the set value. The larger the set value becomes,
the more times the thread raveling operation is repeated.
