EFKA FP220A5911
64
11.19 Thread Trimming Operation
Function
with
or
without
control panel
Parameter
Thread trimmer On/Off
(FA)
013
Thread wiper On/Off
(FW)
014
Function
with
control panel
V820
Thread trimmer or thread wiper On/Off
5 key
When a V820 control panel is connected, the functions can also be switched on and off by means of the
5
key.
11.19.1
Thread Trimmer/Thread Wiper (Modes 0, 2, 3, 10, 14, 20 and 23)
Function
with
or
without
control panel
Parameter
Thread wiper time
(t6)
205
Holding power output M1 of the thread trimmer backward
(t11)
213
Thread trimmer activation angle
(iFA)
250
Thread tension release switch-off delay
(FSA)
251
Thread tension release switch-on delay
(FSE)
252
Stop time for thread trimmer
(tFA)
253
Upper limit ON period of thread trimmer backward
(EV-)
255
Thread trimming on lockstitch machines (modes 0...3, 10, 14, 20 and 23) is performed at trimming speed.
When thread trimming is off, the drive stops in position 2 at the seam end; it stops in position 1 at the end of programmed
seams.
On lockstitch machines, the thread wiper ON period can be set depending on the selected trimming mode (see chapter
"Timing Diagrams" in the List of Parameters). The return rime (t7) that can be set by means of parameter 206 prevents
sewing foot lifting before the thread wiper is in its initial position. If the thread wiper is not connected, there will be a delay
time (tFL) after thread trimming until sewing foot lifting.
11.19.2 Trimming
Speed
Function
with
or
without
control panel
Parameter
Trimming speed
(n7)
116
11.19.3
Chainstitch Thread Trimmer (Modes 4, 5, 6, 21 and 24)
Thread trimming on chainstitch machines (modes 4, 5, 6, 21 and 24) is performed at machine standstill in position 2. When
thread trimming is off, the drive stops in position 2 at the seam end. The signal sequence of M1...M4 and of the sewing foot
can be set as desired by means of parameters 280...288 (parallel or sequential).
