Instruction Manual
7.12.2 Bobbin thread monitoring using stitch counting
Function with or without control panel
Bobbin thread monitor On/Off
Number of bobbin thread monitor stitches
For bobbin thread monitor operation a number of stitches depending on the length of the bobbin thread has
been preset using parameter 031. After the execution of these stitches the drive stops and a visual signal
appears on the display. If a control panel is connected, an acoustic signal is also issued if parameter 127is set
accordingly. This signals that the bobbin thread will run out. After pressing the pedal again, the seam can be
continued and the thread can be trimmed. After inserting a full bobbin and pressing the enter key, a new sewing
operation can be started.
Enable bobbin thread monitor:
Select parameter 030 = 1...3.
Input the desired maximum number of stitches in parameter 031 (input value x 100 = number of stitches,
e. g. 80 x 100 = 8000).
For starting the counter set the A or B key at ""19" using parameter 293 or .294.
When using a control panel, an acoustic signal can also be enabled using parameter 127.
Start the sewing operation.
Bobbin thread monitor in operation:
Bobbin thread monitor is off.
The drive stops after the stitch counter has run out. The message "A7" appears on the control,
and the bobbin thread monitor symbol blinks on the V810/V820/V850 control panel, respectively.
There will be an acoustic signal if a V820/V850 control panel is connected and parameter 127 is
set at "1".
The drive stops after the stitch counter has run out. The message "A7" appears on the control,
and the bobbin thread monitor symbol blinks without stopping automatically on the
V810/V820/V850 control panel, respectively. There will be an acoustic signal if a V820/V850
control panel is connected.
The drive stops after the stitch counter has run out. Thread trimming is possible with pedal in pos.
–2. Then the start is blocked. The message "A7" appears on the control, and the bobbin thread
monitor symbol blinks on the V810/V820/V850 control panel, respectively. There will be an
acoustic signal if a V820/V850 control panel is connected and parameter 127 is set at "1".
Function as with parameter 030 = 1, but remaining stitches will be displayed.
Function as with parameter 030 = 2, but remaining stitches will be displayed.
Function as with parameter 030 = 3, but remaining stitches will be displayed.
Getting the bobbin thread monitor ready for operation:
Insert the full bobbin.
Press the selected external key, or the appropriate key on the connected control panel (key 8 on the
V820/V850).
Set counting to the value determined by parameter031.
The symbol stops blinking, and the message "A7" on the control will be switched off after trimming.
7.13 Thread Trimming Operation
Function with or without control panel
Thread trimmer On/Off
Thread wiper On/Off
Function with control panel
Thread trimmer or thread wiper On/Off
When a V820/V850 control panel is connected, the functions can also be switched on and off using key 5.
To Next Page
Loading...