Notes)
o Ifanydip
switches
other than
those
inthe
tables
(SW2-1,2,3,SW34,
5,8,
SW4-3,
SW5-3)
are turned ON,there is a danger that the sewingmachinehead willbe damaged. Absolutely do not
touch
them.
o Selectfunctions with the power OFF.
(While
the poweris ONthe function selectionswillnot change.)
3) Detailed explanations
of
functions
(1) Starting automatic reverse stitching speed selection
Select whether the starting reversestitching speed is to vary with the amount the pedal is depressed or to
depend
solelyon the speedsetting. Thisselection is
made
with
SW4-1
(SBT
M/A).
ON: The set numberof stitchesareallsewnat the speedset by BTVRand LSLVR
regardless
of how
far the pedalis depressed (consequently,
sewing
cannot be stopped in the middleeven when the
pedal is in neutral).
OFF: The speed depends on how far the pedalis depressed (except that the speed cannot exceed the
upper limit set by BT VR). In pedal priority operation, sewingcan be stopped in the middle by
putting the pedal in neutral (during reverse stitching step, turn the solenoid OFF while sewing
is stopped).
(2) Wipercontrol selection
Selectwhether or not wiper control is to be applied(whenwipercontrol is to be not applied temporarily,
this can be accomplished with the switch on the head).
Make this selection with
SW4-2
(WIP ON).
ON: After thread trimming the wiper solenoid comes ON for about 45ms and the wiper operates.
Also, when
the
Auto-lifter has been selected, there is a delay
of
about 30ms before the shift to
presser foot lifter control (to allow time for the wiper to return).
OFF:
Wiper
is not actuated (For this reason,when there isan Auto-lifterit takes 45 ms for suction and
30 ms for return for a fast total time of 75 ms, then the presserfoot risesautomatically.
(Caution) if
SW3-2
(FLUD)issimuhaneousiy set to its ON position, the time requiredto start controlling
the
presser
lifter
is changed
to
approximately
60
ms. (This
function
is useful in
the
case
where
the
the
presser
foot
comes
in
contact
with
the
wiper.)
(3) Selection of
back-up
needle
raising
after thread
trimming
When the presser foot is raised after thread trimming, when the needle tip gets in the way below the
presserfoot the sewingmachine can be backed up to the vicinity of the needle upper dead point. Make
this selectionwith SW3-3.(REV ON)
ON: Needle can be raised by backing sewing machine up
(but
in this position the balance is lowered
quite far, so the needlethread should be drawn out farther than normal from the needle tip).
OFF:
Back-up
control is not applied after thread trimming.
(4) Selection
of
routine needle-up stop function
When this function is selected, whenever the needle is stopped by putting the pedal in neutral it stops in
the upper position. Make this selection with SW5-4(UPTRM).
ON: Needleroutinely stops in upper position (in this case, run the sewingmachine one cycle by pedal
return, trim the thread and then stop it again in the upper position).
OFF: Needle stops in lower position.
(5) Selection of soft start function
When
the
sewing
pitch
is
fine
or the
needle
isthick,
when
the
needle
thread
andbobbinthread
fail
to
interlaceat the start of
sewing
the
sewing
stability can be improved by limitingthe
sewing
machinespeed
during the first or second stitch at the start
of
sewing.
Make
this selection with combination of
SW5-7
(SOFT ON) and SW5-8 (SOFT 1/2).
(refer to Table 4-3).
Table
4-3
Name
of
switch
Output
function
SW5
- 7
SOFT
ON
SW5
- 8
SOFT
1/2
OFF
OFF
Soft
start
function does
not
operate.
OFF
ON
ON
OFF
Soft start function operates during first stitch.
ON
ON
Soft start function operates during second stitch.
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32
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