Instruction Manual
Function with or without control panel
Automatic sewing foot with pedal forward at the seam end if light barrier or stitch
counting is On
Coupled thread tension release and sewing foot lifting. The function can be activated
only with a thread trimmer that depends on the angle.
Switch-on delay with pedal in position –1
Start delay after disabling the sewing foot lifting signal
Time of full power of sewing foot lifting
Duty ratio (ED) with pulsing
Delay after thread wiping until sewing foot lifting
Delay after thread trimming without thread wiper until sewing foot lifting
Upper limit ON period of sewing foot lifting 1...100
(AFL)
(FSP)
(t2)
(t3)
(t4)
(t5)
(t7)
(tFL)
(EF-)
023
024
201
202
203
204
206
211
254
Sewing foot is lifted:
in the seam by heelback (position -1)
or automatically (using the S4 key on the control, left-hand LED lights up)
or automatically (using key 3 on the V810 control panel)
or automatically (using key 6 on the V820/V850 control panel)
by pressing a key depending on the pre-selection of parameters 240...249
after thread trimming by heelback (position -1 or -2)
or automatically (using the S4 key on the control, right-hand LED lights up)
or automatically (using key 3 on the V810 control panel)
or automatically (using key 6 on the V820/V850 control panel)
by pressing a key depending on the pre-selection of parameters 240...249
automatically by light barrier when pedal forwards, according to the setting of
parameter 023
automatically by stitch counting when pedal forwards, according to the setting of
parameter 023
Switch-on delay after thread wiper (t7)
Switch-on delay without thread wiper (tFL)
It is possible to prevent unintentional foot lifting before thread trimming when changing from pedal position 0
(neutral) to position -2 by setting a switch-on delay (t2) using parameter201.
Holding power of the lifted foot:
The sewing foot is lifted by full power. Then the system switches automatically to partial power in order to
reduce the load for the control and the connected solenoid.
Set the duration of full power using parameter 203 and the partial holding power using parameter 204.
ATTENTION
If the holding power is set too high, the solenoid and the control may be permanently damaged.
Please observe the permissible duty ratio (ED) of the solenoid and set the appropriate value
according to the table below.
high holding power (full power)
Sewing foot lowers:
Press pedal to position 0 (neutral)
Press pedal to position ½ (slightly forward)
Release key for manual sewing foot lifting
Upon pressing the pedal forward from lifted sewing foot, the start delay (t3) that can be set using parameter 202
becomes effective.
7.4 Backtacking
7.4.1 Backtack disabling of all automatic backtacking
All automatic backtacks are disabled when the function was turned on using a key programmed for the function.
(For input function, see parameter 240 = 96 (for S5 e.g. parameter 844 = 96).
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