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
40
The speed is limited to 2000 RPM or 3000 RPM using the control inputs on A/9 (DB2000) and A/10 (DB3000). The speed
limitations can be varied using parameters 117 and 289. When changing the switching state of the control inputs, the
respective speed limitation is delayed by approx. 50 ms or is released.
Note
If several speed limitations are activated at the same time, the maximum speed is limited to the lower value.
6.20.2 Analog Speed Limitation
The maximum speed can be limited by an analog voltage on input A/3. The analog voltage is generated by a potentiometer
which functions as voltage divider. If no potentiometer is connected, the maximum voltage is applied to the input. A
potentiometer for speed limitation on the control is also possible.
6.20.3 Analog Speed Limitation Speedomat
The speedomat function enables a speed limitation depending on the set sewing foot high lift (21 levels). The actual value
of the high lift is transmitted to the control by the position of a potentiometer (10kΩ) with an angle of rotation of 60°,
which is coupled with the high lift shaft. The maximum angle of rotation of the high lift shaft is 48°. Thus the setting range
of the potentiometer is from 9kΩ (nmax = 4.5V on socket A/3) to 1kΩ (nlim. = 0.5V on socket A/3).
Potentiometer connections see chapter "Connection Diagram".
Functions Parameter
Maximum speed (n2) 111
High lift walking speed (n10) 117
Speed setting depending on high lift (knP) 188
It is possible to program the assignment of the speed limitation to the 21 speedomat levels.
Minimum high lift = maximum speed (n2)
Maximum high lift = minimum speed (n10)
Graduation of the examples below is as follows:
Speed
3500 X X X X X upper speed break point
3200 X
3110 X
3020 X
2930 X
2840 X
2740 ----------------------------------------------------------- X
2650 X
2560 X
2470 X
2380 X
2280 X
2190 X
2100 X
2000 lower speed break point X X X
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 Levels
Display example of parameter 182 on the V820 control panel:
Signification:
XX Display of the level up to which the maximum speed is effective
(upper break point).
YY Display of the level from which the maximum speed is effective
(lower break point).
AB Display of the level set on the potentiometer.
ZZZZ Speed resulting from the set high lift level.
EEEE Outside the speed range.
ZZZZ XX AB YY