Front Panel Controls / Features; Section 4 System: Operation - ESAB A120 Operating Manual

SECTION 4 SYSTEM:
OPERATION
4.01

Front Panel Controls / Features

See Illustration for numbering Identification
1. Output Current Control
Sets the desired output current. Output settings
up to 60 Amps may be used for drag cutting (with
the torch tip contacting the workpiece) or higher for
standoff cutting.
2. Function Control
Function Control Knob, Used to select between the
different operating modes.
SET Used to purge the air through the unit
and torch and leads and to adjust gas pressure.
RUN Used for general cutting operations
RAPID AUTO RESTART
restarting of the Pilot Arc for uninterrupted cutting.
LATCH Used for longer hand held or
mechanical cuts. (Does not apply to automation).
Once a cutting arc is established, the torch switch
can be released. The cutting arc will remain ON
until the torch is lifted away from the work piece,
the torch leaves the edge of the work piece the
torch switch is activated again or if one of the sys-
tem interlocks is activated.
3. ON OFF Power Switch
ON / OFF Switch controls input power to the
power supply. Up is ON, down is OFF.
4. Air/Gas Pressure Control
The Pressure
"SET" mode to adjust the air/gas pressure. Pull the
knob out to adjust and push in to lock.
5. AC Indicator
Steady light indicates power supply is ready for op-
eration. Blinking light indicates unit is in protective
interlock mode. Shut unit OFF, shut OFF or discon-
nect input power, correct the fault, and restart the
unit. Refer to Section 5 for details.
0-5430
Allows for faster
+ Control is used in the
OPERATION
CUTMASTER A120
1
A
MAX
MIN
PSI
MAX
MIN
!
5 6 7 8 9
6. Temp Indicator
Indicator is normally OFF. Indicator is ON when
internal temperature exceeds normal limits. Let the
unit cool before continuing operation.
7. Gas Indicator
Indicator is ON when minimum input gas pressure
for power supply operation is present. Minimum
pressure for power supply operation is not sufficient
for torch operation.
8. DC Indicator
Indicator is ON when DC output circuit is active.
!
9. Fault Error Indicator
Indicator is ON when Fault circuit is active. See sec-
tion 5 for explanations of fault lights.
2
3
4
BAR
MAX
+
MIN
Art# A-07886
10
4-1