Amada IS-300CA, Operation Manual, Page: 73 / 208

CHAPTER 3: USING PROGRAMMING FUNCTIONS
IS-300CA INVERTER POWER SUPPLY
990-418 3-43
b. STEP MODE
There are two types for step-up (step-down), stepwise (
FIXED
) and linear (
LINER
). When step-
up (step-down) is not used,
OFF
is displayed. The setting is made on the
MODE SELECT
screen.
FIXED
STEP2 STEP1 STEP4 STEP3 STEP5
(100%F IXED )
Current
Number o f
we lds
Set va lue o f STEP4
Set va lue o f STEP1
Set va lue o f STEP5
Set va lue o f STEP3
Set va lue o f STEP2
As shown in the above figure, the current is stepped up or down to the value for
STEP2
following
completion of the specified number of welds for
STEP1
. Similarly, the current is stepped up or
down to the value for
STEP3
following completion of the specified number of welds for
STEP2
.
LINER
STEP2 STEP1 STEP4 STEP3 STEP5
(100%F IXED )
Current
Number o f
we lds
Set va lue o f STEP5
Set va lue o f STEP4
Set va lue o f STEP3
Set va lue o f STEP2
Set va lue o f STEP1
As shown in the above figure, the current is stepped up or down to the value for
STEP2
with the
specified number of welds for
STEP2
following completion of the specified number of welds for
STEP1
. Similarly, the current is stepped up or down to the value for STEP3 the specified number
of welds for
STEP3
following completion of the specified number of welds for STEP2.
For example, the settings are
COUNT: 2
for
STEP1, RATIO: 200%
and
COUNT: 4
for
STEP2
,
and 2kA for current, the current is stepped up in a stepwise manner from Weld 3 to Weld 6 as
shown below.
Weld 1:2kA Weld 2:2kA Weld 3:2.5kA Weld 4:3.0kA Weld 5:3.5kA Weld 6:4.0kA
<---------
STEP1
----------> <------------------------------
STEP2
----------------------------->