Instruction manual
Table Of Contents
- Range of Applications
- Scope of Supply
- Operation
- Putting into Service
- Setting the Basic Functions
- Functions and Settings
- First Stitch after Power On
- Softstart
- Sewing Foot Lifting
- Sewing Foot Pressure Reduction
- Start Backtack
- End Backtack
- Start and End Backtack with Switch-On and Switch-Off Delay
- Start Ornamental Backtack
- End Ornamental Backtack
- Multiple Backtacking
- Catch backtacking
- Intermediate Backtack
- Backtack Suppression/Recall
- Holding Power of the Stitch Regulator Solenoid
- Reverse Motor Rotation
- Machine Run Blockage (Safety Switch)
- Thread Monitor
- Input Signals
- Parameter 195 = 0 – No Thread Monitor Function
- Parameter 195 = 1 – Model 270 / No Stop / Sewing Foot Down after Seam End
- Parameter 195 = 2 – Model 767, N291 / With Stop / Sewing Foot Up after Seam End
- Parameter 195 = 3 – Model 767, N291 / With Stop / Sewing Foot Down after Seam End
- Parameter 195 = 4 – With Thread Monitor Stitch Counting
- Needle Cooling
- High Lift for Walking Foot
- Manual High Lift for Walking Foot – Speed Limitation
- Maximum High Lift for Walking Foot by Using a Key
- High Lift for Walking Foot Operational Mode Not Stored (Pa. 138 = OFF, Pa. 184 = 0)
- High Lift for Walking Foot Operational Mode Stored (Pa. 138 = ON)
- High Lift for Walking Foot Operational Mode Not Stored with Minimum Number of Stitches (Pa. 138 = OFF, Pa. 184 = >0)
- Speed Limitation
- Switch Stitch Length
- Roller
- Thread Clamp
- Thread Trimming Operation
- Seam with Stitch Counting
- Free Seam and Seam with Light Barrier
- Light Barrier
- Needle Up/Down / Single Stitch
- F1/F2 Function Key Assignment on the V810/V820 Control Panels
- Signal Output Position 2
- Signal Output 512 Impulses per Rotation
- Actuator
- Acoustic Signal
- Master Reset
- Input and Output Function Test
- Error Displays
- Operating Elements of the V810 Control Panel
- Operating Elements of the V820 Control Panel
EFKA DA82GA3312
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Functions Parameter
Switch-on delay with pedal in position –1 (half heelback) (t2) 201
Start delay after disabling the sewing foot lift signal (t3) 202
Time of full power (t4) 203
Duty ratio (ED) with pulsing (t5) 204
Delay after thread wiping until sewing foot lifting (t7) 206
Fast sewing foot lifting On/Off (FLS) 216
Time monitoring of sewing foot lift (monitoring Off at “0”) (tFL) 297
Sewing foot is lifted:
in the seam by half heelback (position -1)
or automatically (using key 3 on the V810 control panel)
or automatically (using key 6 on the V820 control panel)
after thread trimming by heelback (position -1 or -2)
or automatically (using key 3 on the V810 control panel)
or automatically (using key 6 on the V820 control panel)
automatically using the light barrier
automatically by stitch counting
switch-on delay after thread wiper (t7)
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 parameter 201.
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.
Stage Duty ratio (ED) Effect
1 12.5 % low holding power
2 25.0 %
3 37.5 %
4 50.0 %
5 62.5 %
6 75.0 %
7 87.5 %
0 100.0 % high holding power (full power)
Sewing foot lowers:
Press pedal to position 0 (neutral)
Press pedal to position ½ (slightly forward)
Upon pressing the pedal forward from lifted sewing foot, the start delay (t3), that can be set using parameter 202, becomes
effective.
See List of Parameters chapter "Timing Diagrams"!
6.4 Sewing Foot Pressure Reduction
Functions Parameter
Sewing foot pressure reduction with speed limitation, function of the key on socket D/4 (mFd) 146
CAUTION!
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.