12
2. Control Panels
PANEL FUNCTIONS & DESCRIPTIONS
7
§Front Panel Functions and Descriptions
§MMA control panel
1. Welding mode button
: Press it to select MMA welding mode.
2. L parameter knob
: Rotate it to adjust welding current.
3. R parameter knob
: Press it to select Hot start or Arc force and rotate it to adjust
value. Setting range: 0~10.
Hot start
Hot start provides extra power when the weld starts to counteract the high resistance of
the electrode and workpiece as the arc is started. Setting range: 0~10.
Arc force
An MMA welding power source is designed to produce constant output current. This
means with different types of electrode and arc length; the welding voltage varies to keep
the current constant. This can cause instability in some welding conditions as MMA
welding electrodes will have a minimum voltage they can operate with and still have a
stable arc.
Arc Force control boosts the welding power if its senses the welding voltage is getting
too low. The higher the arc force adjustment, the higher the minimum voltage that the
power source will allow. This effect will also cause the welding current to increase. 0 is
Arc Force off, 10 is maximum Arc Force. This is practically useful for electrode types that
have a higher operating voltage requirement or joint types that require a short arc length
such as out of position welds.
1. Welding mode button
Press it to select MMA welding mode.
2. L parameter knob
Rotate it to adjust welding current.
3. R parameter knob
Press it to select Hot start or Arc force and rotate it to adjust value. Setting range: 0~10.
Hot start
Hot start provides extra power when the weld starts to counteract the high resistance of the electrode
and workpiece as the arc is started. Setting range: 0~10.
Arc force
An MMA welding power source is designed to produce constant output current. This means with differ-
ent types of electrode and arc length; the welding voltage varies to keep the current constant. This can
cause instability in some welding conditions as MMA welding electrodes will have a minimum voltage
they can operate with and still have a stable arc.
Arc Force control boosts the welding power if its senses the welding voltage is getting too low. The
higher the arc force adjustment, the higher the minimum voltage that the power source will allow. This
effect will also cause the welding current to increase. 0 is Arc Force off, 10 is maximum Arc Force. This
is practically useful for electrode types that have a higher operating voltage requirement or joint types
that require a short arc length such as out of position welds.
2.1 MMA Display
Summary of Contents for Evolution MTS500 DP
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