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
55
10 Operating Elements of the V820 Control Panel
variocontrol 820
P E
KL2186
41 2 3
B
R
85 6 7 9 0
A
+
-
F
1
The V820 control panel is supplied with slide-in strip no. 1 above the keys.
Function Key Assignment
Key P = Call or exit of programming mode
Key E = Enter key for modifications in the programming mode
Key + = Increase of the value indicated in the programming mode
Key - = Decrease of the value indicated in the programming mode
Key 1 = Start backtack SINGLE / DOUBLE / OFF
Key 2 = Stitch counting seam FORWARD / BACKWARD / OFF
Key 3 = Light barrier function COVERED-UNCOVERED / UNCOVERED-COVERED / OFF
Key 4 = End backtack SINGLE / DOUBLE / OFF
Key 5 = THREAD TRIMMER / THREAD TRIMMER + THREAD WIPER / OFF
Key 6 = Automatic sewing foot lift after thread trimming ON / OFF
Automatic sewing foot lift at stop in the seam ON / OFF
Key 7 = Basic position needle down (POSITION 1) / needle up (POSITION 2)
Key 8 = Thread monitor ON / OFF (>1 sec) or reset (<1 sec)
Key 9 = Function key, programmable
Key 0 = Teach-in / execution of 40 possible seam sections
Key A = Key for backtack suppression/recall
(Different input functions can be assigned to key A using parameter 293)
Key B = Key for needle up or shift key in the programming mode
(Different input functions can be assigned to key B using parameter 294)
Special Key Assignment for HIT
After having pressed key 1, 2, 3, 4 or 9, the following can be varied using key +/-:
Key 1= Number of stitches of the selected start backtack
Key 2= Number of stitches of the seam with stitch counting
Key 3= Number of light barrier compensating stitches
Key 4= Number of stitches of the selected end backtack
Key 9 = Number of stitches or On/Off of the programmed function