Instruction manual

EFKA AB221A/AB321A + AB222A/AB322A (BA)
58
If parameter 290 = 16 and slide-in strip "7" has been selected for the V820 control panel, the following functions will be
performed:
Function with V820 control panel Key 7 Key 8
Standard sequence with tape cutting at the start of the seam and at the seam end Off Off
Unlocking the chain On according to the setting of parameter 190 = 0...4 On Off
Unlocking the chain according to the setting of parameter 190 = 3 On/Off On
See timing diagrams in the List of Parameters for operation characteristics of the control.
When using the V820 control panel, direct access by means of the function key (key 9) is possible!
Function with control panel Parameter
Unlocking the chain On/Off (-F-) 008 = 4
9.14 Machine Run Blockage (Safety Switch)
The function “machine run blockage” is enabled by connecting a switch to socket ST2, depending on the preselection of
parameters 240...249. When using a V810 / V820 control panel, an acoustic signal can be switched on and/or off by means
of parameter 127.
Display after enabling machine run blockage without control panel:
Control display 
Display and signal after enabling machine run blockage with control panel:
V810 control panel display
(symbol blinks and acoustic signal if parameter 127 = 1) 
V820 control panel display
(symbol blinks and acoustic signal if parameter 127 = 1) 
Machine run blockage in the free seam, seam with stitch counting and light barrier seam:
The seam is suspended by opening and/or closing the switch.
 Stop in the basic position
 Needle up is not possible
 Sewing foot lift is possible
Machine run blockage in the start backtack / start stitch condensing:
The start backtack / start stitch condensing is interrupted by opening and/or closing the switch.
 Stop in the basic position
 Needle up is not possible
 Sewing foot lift is possible
 After disabling of the machine run blockage, the seam will be continued with the section following the start backtack /
start stitch condensing
Machine run blockage in the end backtack / end stitch condensing:
The end backtack / end stitch condensing is interrupted, and the seam is completed by opening and/or closing the switch.
 Sewing foot lift is possible
CAUTION!
This is not a safety function. The line voltage must still be switched off during
maintenance and repair work.
A 2
-S t o P-