Instruction manual

- DA321G5321
- 35 -
The following exceptions should be noted:
 If the bobbin thread monitor ends in a start backtack, then the start backtack will run to the end and then the
drive will stop.
 If the bobbin thread monitor ends in an end backtack, the end backtack and trimming process will run to
completion.
After thread trimming, the sewing foot automatically lifts. The displays are removed (the flashing frequency of 4
Hz is turned off) if, after the thread trimming and the following start of sewing, no input signal has come in after
14 stitches. The bobbin has therefore been replaced and the bobbin thread counter is reset to zero.
6.15.5 Bobbin thread monitor with stop / sewing foot down after seam end (parameter
195 = 3)
Upon detection of an input signal after the bobbin runs empty, the bobbin thread counter is activated and the
bobbin thread monitor symbol appears on the display of the V810 or V820/V850 control panel. After the counter
runs out, the V810 control panels shows a C for the left bobbin and/or D for the right bobbin. On the V820/V850/
control panel, instead of the model name, another symbol for right, left, or both is displayed. The corresponding
LEDs on the machine (right, left, or both) will continue to flash about 4 times per second, and the drive stops.
After thread trimming, the sewing foot is not lifted. The sewing foot is only lifted after the pedal has been in the 0
position and then returned to its position.
The displays are removed (the flashing frequency of 4 Hz is turned off) if, after the thread trimming and the
following start of sewing, no input signal has come in after 14 stitches. The bobbin has therefore been replaced
and the bobbin thread counter is reset to zero.
6.15.6 Bobbin thread monitor with stitch counting (Parameter 195 = 4)
To work with different bobbins and be able to use the bobbin thread monitor function, three stitch counts can be
programmed (A, B, C; parameters 086, 087, and 088).
Before initial commissioning of a controller, and after every update of the Flash program memory, these
counters must be programmed.
Programming during first commissioning (after Flash update)
 Call parameter 195; set to 4
(Display example for V820/V850)

F 195 rFw 4
P
P
Press the P key twice!

3400 da321G
8
Press the 8 key (>1 Sec.). Bobbin symbol in display
flashes.

3400 cA 00100
+
Press the + key. Display flashes.

3400 b - -| |- -
8
Press the 8 key (<1 Sec.). Bobbin symbol in display
flashes.

3400 cb 00200
+
Press the + key. Display flashes.

3400 c - -| |- -
8
Press the 8 key (<1 Sec.). Bobbin symbol in display
flashes.

3400 cc 00300
Turn thread monitor function on/off
Long actuation (>1 second) of a key connected to socket A/12 activates the thread monitor stitch counting
(maximum 65,000 stitches) and the thread monitor display appears continually in the display.
When the V820/V850 control panel is connected, key 8 can be used to initiate the same function.
Pressing the key again turns the function back off.
The function "Direct input of maximum speed" (DED) is only possible with the thread monitor function turned off,
or in the seam.
Selecting the stitch counter (A, B, or C)
At the start of the seam, the stitch count can be selected by pressing the +/- keys on the control panel. The
stitch counter last used and the counter values are retained even after the power is turned off.