IS-120B
4. How to Operate Screens
4-21
(9) STEPPER COUNT Screen
IS-120B
can change the level of the welding current depending on the welding
condition. The function to increase the welding current is called the step-up function,
and that to decrease the welding current is called the step-down function. Set the
timing for step-up
(
step-down
)
by the number of welds.
-STEPPER
COUNT
(FOR
ALL
SCHEDULES)
STEP
#
VALVE1=3
VALVE2=4
VALVE1
VALVE2
VALVE1
VALVE2
STEP1
0000
0000
STEP6
0000
0000
STEP2
0000
0000
STEP7
0000
0000
STEP3
0000
0000
STEP8
0000
0000
STEP4
0000
0000
STEP9
0000
0000
STEP5
0000
0000
This screen shows initial settings.
As shown in the above figure, the current is stepped up
(
down
)
to the value for
STEP2
when the number of welds for
STEP1
finishes.
Similarly, the current is stepped up
(
down
)
to the value for
STEP3
when the number
of welds for
STEP2
finishes.
(
a
)
STEP # VALVE1/VALVE2
Counting of weld is started at the step set here.
If
VALVE1
is set to 3 as shown above, counting of weld is started at the first
weld of
STEP3
, even at the first operation. The welding current is increased
(
or decreased
)
by the value set to
STEP3
on the
HEAT INCREASE
% screen
.
Set the desired
STEP
No. 1 - 9 for
VALVE1, 2
respectively.
(
b
)
STEP 1 - 9
Set the number of welds for each step. After performing weld by the set
number at each step, the system proceeds to the next step.
～
～
Set value of STEP 1
Set value of STEP 2
Set value of STEP 3
Set value of STEP 4
Set value of STEP 5
Current
(Fixed to 100%)
STEP1
STEP2
STEP3 STEP4 STEP5
Number of
welds
(a)
(b)
