Instruction Manual
ITEM TE700
TECNA
S.p.A.
64/128
The N.TOTAL STEPS parameter determines the number of segments to be entered in the
stepper curve. Enter the number of welds that make up the segment in parameters SPOTS
1,2… and enter the relevant percentage increase to be carried out in parameter INCREMENT
1-L1,2-L1….
The programming procedure is outlined in the
STEPPER
MENU
paragraph.
Example:
Welding tests have determined that the electrode life corresponds to 4000 welding spots, and
that the following currents values are necessary at different moments of the electrodes life
WELDING SPOTS EXECUTED
NECESSARY CURRENT
0 (initial electrode diameter)
15 kA
700 17.8
kA
1800 19.5
kA
3000 20.2
kA
4000 (final electrode diameter)
20.7 kA
Therefore calculate the duration (in number of welding spots) and the percent increment of
each segment.
Please, notice that the percent increment must always be calculated referring to the beginning
of the considered segment.
spots
700
=
0
-
700
=
1
segment
of
Duration
spots
1100
=
700
-
1800
=
2
segment
of
Duration
spots
1200
=
1800
-
3000
=
3
segment
of
Duration
spots
1000
=
3000
-
4000
=
4
segment
of
Duration
%
19
100
15
15
8
.
17
100
1
%
rent
initialcur
rent
initialcur
endcurrent
segment
Change
%
10
100
8
.
17
8
.
17
5
.
19
100
2
%
rent
initialcur
rent
initialcur
endcurrent
segment
Change
%
4
100
5
.
19
5
.
19
2
.
20
100
3
%
rent
initialcur
rent
initialcur
endcurrent
segment
Change
%
.
.
.
rent
initialcur
rent
initialcur
endcurrent
4
segment
%
Change
3
100
2
20
2
20
8
20
100
The following parameters are consequently set in the
STEPPER
MENU
:
PARAMETER
PARAMETER DESCRIPTION
VALUE
TOOLS N°
Identifier of the tool on which the stepper module works
1
STEPPER WELD
Parameter adjustment increase, current in the example
ON L1
STEPPER TIME
Weld time increase
OFF
STEPPER THICK.
Electrodes thickness decrease
OFF
N.TOTAL STEPS
Total number of stepper steps
4
SPOTS 1
Number of spots of first segment
700
INCREMENT 1-L1
Percentage increase of the first segment relevant to law L1
19 %
