Instruction manual

EFKA AB221A/AB321A + AB222A/AB322A (BA)
67
Function without control panel Control
Chain suction at the start of the seam On LED 1 On Key S2
Chain suction at the seam end On LED 2 On
Function with control panel V810/V820
Chain suction at the start of the seam On left-hand arrow above key On Key 1
Chain suction at the seam end On right-hand arrow above key On
Function with or without control panel Parameter
Stop when tape cutting at the seam end On/Off (Sab) 017
Sequence overlock mode (modes 7/16) with or without stop (UoS) 018
Chain suction signal at the seam end until end of count c2 or until pedal in pos.0 (SPO) 022
(neutral)
Start counting (parameter 157) for thread tension release at the start of the seam (tFS) 025
Speed during stitch counting at the start of the seam (kSA) 143
Speed during stitch counting at the seam end (kSE) 144
Stitches until thread tension release Off after light barrier covered at the start of the seam (SFS) 157
Enable chain suction and thread tension release signal at the seam end (kSL) 193
Thread tension release On at the seam end until pedal in pos. 0 (neutral) or until the next (FSn) 199
start of a seam
Braking curve in overlock mode On/Off (bdO) 235
Switch-off delay for chain suction at the seam end if parameter 022 = 2 (tkS) 237
Start count cancellation and seam end initiation by light barrier uncovered On/Off (Abc) 267
There are various setting possibilities with the following parameters in the overlock mode (mode 7).
018 = 0 Sequence with stop.
018 = 1 Sequence without automatic stop at the seam end. When the command “run” is given, the drive runs at the pre-
selected speed. The program switches to the next start of a seam without issuing signals M1/M2, when the pedal
is in pos. 0 (neutral) or the light barrier is covered.
018 = 2 Sequence as with setting 1. But signals M1/M2 will be issued when the pedal is in pos. 0 (neutral), and the
program switches to the next start of a seam.
018 = 3 Sequence as with setting 1. But signals M1/M2 will be issued when the pedal is in pos. -2, and the program
switches to the next start of a seam. Intermediate stop and sewing foot lifting with pedal in pos. –1 is possible.
018 = 4 If the light barrier is covered during the end count for chain suction, the program switches immediately to the
next start of a seam. If the end count has been completed and the light barrier remains uncovered, the drive stops
immediately.
022 = 0 The chain suction signal at the seam end is disabled after count c2.
022 = 1 The chain suction signal at the seam end remains on until pedal in pos. 0 (neutral).
022 = 2 Chain suction until the drive is at standstill and the switch-off delay (parameter 237) has elapsed. The switch-off
delay will be disabled whenever a new seam is started.
025 = 0 Start counting for thread tension release at the start of the seam.
025 = 1 Start counting for thread tension release when the light barrier is covered.
193 = 0 Thread tension release and chain suction after the light barrier compensating stitches.
193 = 1 Chain suction from light barrier uncovered onwards and thread tension release after the light barrier
compensating stitches.
199 = 0 Thread tension release On at the seam end until pedal in pos. 0 (neutral).
199 = 1 Thread tension release On at the seam end or at the start of the seam.
199 = 2 Thread tension release On at the seam end or at the start of the seam and after “power On“.
235 = 0 Braking curve Off.
235 = 1 Braking curve On for precise stop upon chain suction at the seam end.
267 = 0 Start count cancellation by light barrier uncovered impossible.
267 = 1 Start count cancellation by light barrier uncovered.
Chain suction or tape cutting at the start of the seam are cancelled whenever the light barrier senses “uncovered”,
and the seam end will be initiated.
It is possible to select the speed function for stitch counting at the start of the seam and at the seam end using the following
parameters.
143 = 0 Speed controllable by the pedal up to the set maximum speed (parameter 111).
143 = 1 Fixed speed (parameter 112) without influence by the pedal. Stop with pedal in pos. 0 (neutral).
143 = 2 Limited speed (parameter 112) controllable by the pedal up to the set limit.
143 = 3 At fixed speed (parameter 112), can be cancelled or interrupted depending on the setting of parameter 019.
144 = 0 Speed controllable by the pedal up to the set maximum speed (parameter 111).
144 = 1 Fixed speed (parameter 113) without influence by the pedal. Stop with pedal in pos. 0 (neutral).
144 = 2 Limited speed (parameter 113) controllable by the pedal up to the set limit.
144 = 3
At fixed speed (parameter 113), can be cancelled or interrupted depending on the setting of parameter 019.