CEA MATRIX 420 E, Руководство оператора, Страница: 17 / 23

3
■
FUNCTION SELECTION key
When one of the three electrode welding processes available
on the welding machine is activated, this key is used to se-
lect the HOT START and ARC FORCE functions, the values
for which can be regulated by means of the ENCODER knob.
Each time the key is pressed the welding machine switches to
selecting the next function in the following order:
• HOT START.
• ARC FORCE.
• Exit the functions - DISPLAY INDICATION LED on and
welding machine ready again to weld at the current indicat-
ed on the DISPLAY.
If it is held down for about 5 seconds, the FACTORY DEFAULT
setting for the welding machine is activated, that is, the ma-
chine’s parameters are returned to their settings when they
left the factory.
DISPLAY AND LED INDICATIONS
■
DISPLAY INDICATION LED
1) When this LED is on it means that the
DISPLAY is showing the CURRENT val-
ue (the value displayed depends on and
can be regulated on the basis of the type
of process or function selected).
2) When this LED is on it means that the
DISPLAY is showing the VOLTAGE value
(the value displayed cannot be changed
or regulated, but merely indicates the ac-
tual VOLTS on the quick connections for
the welding machine’s positive and neg-
ative poles).
■
WELDING PROCESS SELECTION LED
When one of these LEDs is on it means that the correspond-
ing welding process has been selected.
■
VRD LED
The Voltage Reduction Device (VRD) is a safety device that
reduces the voltage.
It prevents voltages forming on the output terminals that may
pose a danger to people.
Two-tone LED (off - red - green) indicates enabling of the VRD
device.
The standard, preset settings for the CEA do not activate the
VRD function on the welding machine and so this LED is nor-
mally off (to activate the VRD device see the relevant para-
graph).
■
HOT START and ARC FORCE SELECTION LED
These two LEDs can only be on when welding in MMA.
1) When this LED is on it means that the
operator can use the ENCODER Knob
to regulate the value shown on the DIS-
PLAY for the HOT START function.
2) When this LED is on it means that the
operator can use the ENCODER Knob
to regulate the value shown on the DIS-
PLAY for the ARC FORCE function.
■
DISPLAY
Displays, in numerical format, the selections made using the
DISPLAY SELECTION key or the FUNCTION SELECTION key
and regulated using the ENCODER knob.
• When the
LED is on it displays:
- When the machine is in stand-by, the
Amps (A) set.
- When the machine is welding the real
Amps (A) at which the operator is actu-
ally welding.
• When the LED is on it displays the real
VOLTS (V) at the quick connections for the
machine’s positive and negative poles.
• When the HOT START LED is on the nu-
merical value the operator has set for the
HOT START function is displayed.
• When the ARC FORCE LED is on the nu-
merical value the operator has set for the
ARC FORCE function is displayed.
VRD
LED
HOT START and ARC
FORCE SELECTION LED
DISPLAY
WELDING PROCESS
SELECTION LED
DISPLAY
INDICATION LED
2000HA82