Welding control modes
The following four welding modes with respect to the digital input are available,
depending on the value of
Sb
parameter:
1
- (
Repetitive welding
) It is necessary to keep digital input ON for the whole
process of welding. Releasing the input will stop the repetitions and bring the
controller to
ready state
. After one weld is completed, there will be a delay of
td
seconds before the next one starts:
The option for
multi-spark welding
is available for all modes except for
continuous welding
.
In order to use it, set
ni
>
1
for the number of sparks(impulses)
when welding non-flat items. In this case, the user can set different values for the
power of the first and second spark.
0
- (
Trigger on initial pressing
)
It is necessary to keep digital input ON for
the whole phase of pressing (timer
toF
)
,
after that the welding process will continue
straight to the final cooling phase regardless of the input state. A new welding will be
triggered only from
ready state
of the controller, i.e. previous welding finished and
digital input OFF
:
Fig
.1
Timing diagram for welding trigger on initial pressing,
ni
=
4
and
Sb
=
0
*
The second input triggering does not start real welding
SP
SP2
toF
toF
tP
tP
tP
tP
tP
tP
tE
tE
ton
ton
ton
ton
ton
ton
ton
ton
--- 70
70
50
50
40
40
40
40
---
input
Din
toF
output
+
K1
70
---
4
*
*
*
SP
Sp2
Sp
3
toF
toF
tP
tP
tP
tP
tP
tE
ton
ton
ton
ton
ton
ton
ton
Fig
.2
Timing diagram for repetitive welding mode,
ni
=
4
and
Sb
=
1
the digital input is released at the end of third spark of the second weld
td
delay
--- 70
70
50
50
40
40
40
---
23
input
Din
output
+
K
1
23 00
Sp
3
