IS-300A
4. How to Operate Screens
4-9
Control
method
Feature Application Control mechanism
Constant-phase
control
(Non-constant
current)
Welding with the fixed
pulse width. No feedback
control.
Used for special
cases such as the
test of welder, and
not used for normal
welding.
Controls switching with the set
pulse width.
* The control may become unstable when the current flows for over 1 second
continuously.
(f) HEAT
Set the welding current for WELD1, WELD2, and WELD3, respectively.
When CTRL is changed, the contents to be set also change.
Also, the settable range of welding current changes depending on the current
range. (See (3)(f).)
UF (UP SLOPE FIRST)
Sets the initial current value of upslope.
The set value is the same as HEAT.
DL (DOWN SLOPE LAST)
Sets the final current value of downslope.
The set value is the same as HEAT.
(Note) When UP/DOWN is set, UF/DL becomes effective.
It becomes a target value in the effective value control, so a difference
occurs between the set value and the value of actual welding.
Even though E-07 (No-current error) is displayed, current is
flowing. Exercise caution in handling.
(g) NEXT
When the cursor ( ) is displayed, pressing the ENTER key will change the
display to Pulsation and transformer screen.
Pulsation and transformer screen
DANGER
！
(b)
(d)
(e)
(f)
(g)
(a)
(h)
(c)
(i)
(j)
(k)
(l)
(m)
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