Instruction manual

- DA321G5321
- 47 -
6.20 Thread trimming operation
Function with or without control panel
Parameter
Thread trimmer On/Off
Thread wiper On/Off
(FA)
(FW)
013
014
Function with control panel
V820/V850
Thread trimmer On
Thread wiper On
Thread trimmer and thread wiper on.
Thread trimmer and thread wiper Off.
Left arrow on
Right arrow on
Both arrows on
both arrows Off
Key 5
When a V820/V850 control panel is connected, the functions can also be switched on and off using key 5.
Function with or without control panel
Parameter
Mode for thread trimming
Thread trimmer activation angle
Switch-off delay of thread tension release
Switch-on delay angle of thread tension release
Stopping time for thread trimming
Activation delay angle of the thread trimmer
Thread wiper time
Delay after thread wiping until sewing foot lifting
(FAr)
(iFA)
(FSA)
(FSE)
(tFA)
(FAE)
(t6)
(t7)
136
190
191
192
193
194
205
206
The thread trimming operation is started when the pedal is fully back or automatically at the end of a counted
seam section or automatically by light barrier detection after the compensation stitches count down. If the
function "Trimming stitch backwards" is turned on (parameter 136 = 1), for a single end backtack or triple end
backtack, the backtack solenoid stays turned on in position 2 until the stop. With the thread trimmer turned off,
the drive stops in the reverse direction when the seam end has been reached.
For thread trimming, different modes can be selected with parameter 136, e.g. trimming stitch forwards,
backwards, with thread wiper, etc.
136 = 0
Trimming stitch forwards and thread wiper function on.
136 = 1
Trimming stitch backwards and thread wiper function on.
136 = 2
Trimming stitch forwards with signal short thread trimmer on. Thread wiper function Off.
136 = 3
Trimming stitch forwards with output of signal for stitch shortening during the soft start and signal for short
trimmer function on. Thread wiper function Off.
136 = 4
Trimming stitch forwards with output of signal for stitch shortening during soft start. Thread wiper function
Off.
6.20.1 Thread trimmer
Function with or without control panel
Parameter
Trimming speed
(n7)
116
The thread trimming signal is turned on when the trimming speed is reached with incoming position 1 and after
the set angle value is reached (parameter 190), but turned off no later than the stop in position 2. Parameter
193 can be used to set a stopping time for thread trimming, which disengages the drive for this time after
position 1 has been reached. If position 2 is not reached due to mechanical error, the thread trimming signal is
turned off after 10 sec. This protects a solenoid with a low permitted activation time from destruction.
6.21 Thread tension release
Function with or without control panel
Parameter
full power time for thread tension release
Holding force for thread tension release
Thread tension release switch-off delay
Switch-on delay angle of thread tension release
(t14)
(t15)
(FSA)
(FSE)
164
165
191
192