EFKA SM210A5710
24
7.3.1
Timing Diagram “Expander Feeding“ (Pa. 290=3)
Abbreviations for d.c. drive:
POS1
= Position 1 on the sewing machine
POS2
= Position 2 on the sewing machine
FL
= Sewing foot lift (automatic after power On or after thread trimming on the d.c. control)
Abbreviations for stepping motor:
SM>>
= Direction of rotation of stepping motor: cw (speed synchronous with d.c. drive)
SM<<
= Direction of rotation of stepping motor: ccw (speed synchronous with d.c. drive)
in1
= Pushbutton for tape cutter
in2
= Input for reset (FF)
in6
= Pushbutton for expander feeding
M7 (SML)
= Signal “stepping motor running”
M2 (FF)
= Signal “flip-flop”
M8 (BM)
= Tape cutter
M3 (BL)
= Signal “blowing”
M9 (DR)
= Signal “direction of rotation”
Parameter setting of stepping motor control for above timing diagram:
Sign
Function
Parameter
Mode of operation “expander feeding“
290 = 3
n1
Fixed stepping motor speed with asynchronous operation
112
n2
Fixed stepping motor speed with manual operation by means of pushbutton A and/or B
113
Start of expander feeding by means of knee switch
130 = 1
Expander feeding by means of number of steps c3
131 = 0
POS.1
DC
-
+
n
- 2
2
/
1
0
- 1
1
MODE- 3 a
POS.2
ST2/ 2 0
ST2/ 2 1
ST2/ 3 5
FL
ST1/ 2 4
ST1/ 2 5
M9 (DR)
SM
4
4
ST1/ 2 7
M3
ST1/ 2 3
M8
M7(SML)
(BM)
(BL)
ST1/ 1 1
SM
ST1/ 1 2
in6
ST1/ 2 8
M2 (FF)
6
ST1/ 7
in1
SM
in2
V810/ 820
Ta.
SM
A/ B
n1
3
c3
t5
1
SM
SM
7
n2
n2
5
Ta.B
Ta.A
2
2
n1
t5
c3
0262/MODE-3b
t1
t1
