Design Features And Advantages - Red-D-Arc EX350i Operator's Manual

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TIG mode
• The remote will default to the 3-pin amphenol if a
remote control is connected to the 3-pin amphenol
and one of the 14-pin amphenols. If a remote is not
connected to the 3-pin amphenol then the remote
will default to the 14-pin amphenols if a remote is
connected to one of the 14-pin amphenols.
• If a remote control is connected to any of the
amphenols the WELD TERMINAL control will
default to REMOTE. If there are not any remote
control devices attached the WELD TERMINAL con-
trol will default to ON.
CC-Stick modes
• The remote will default to only the 3-pin amphenol if
a remote is connected to it.
• The WELD TERMINAL control will default to ON
with or without a remote connected.
Types of Remote OUTPUT CONTROL
• The EX350i's Output Control can be controlled by
either a potentiometer connected between 77 & 75
with the wiper connected to 76 or a 0V to 10V DC
supply connected between 76 & 75. (76 needs to
be positive)
• 14-Pin Amphenol lead 75 is pin G, lead 76 is pin F
and lead 77 is pin E.
• 3-pin Amphenol lead 75 is pin A, lead 76 is pin B
and lead 77 is pin C.
Potentiometer Control
• The total resistance should be between 2000 ohms
(2K) and 10,000 ohms (10K)
• The machine output will be at minimum when lead
76 (wiper) is at the end of the potentiometer that is
connected to 75. The machine's output will increase
as the wiper of the potentiometer is moved to the
end that is connected to 77. (Note: In TIG mode,
moving the lead 76 (wiper) to lead 77 would pro-
duce the current that has been set by the EX350i's
front panel Output Control.)
Voltage Control
• The supply should be an isolated supply. (Not refer-
enced to earth ground, any auxiliary power from the
EX350i or the welding output) The supply should be
capable of supplying at least 20mA.
• 0 volts supplied to 76 will set the EX350i to mini-
mum output for the mode that has been selected
while 10 volts supplied to 76 will set the EX350i to
the maximum output for the mode. (Note: In TIG
mode, 10 volts supplied to lead 76 would produce
the current that has been set by the EX350i's front
panel Output Control.)
OPERATION
Types of Remote WELD TERMINAL Control
• The EX350i's Weld Terminals can be controlled
from each of the 14 pin amphenol connectors. The
circuit has a nominal OCV of 15VDC and requires a
dry contact closure (less than 100 ohms) to activate
the output of the EX350i.
• 14 Pin Amphenols the Weld Terminals are controlled
from pins C (lead 2) and pin D (lead 4). Pin C is posi-
tive.

DESIGN FEATURES and ADVANTAGES

• Multiple process DC output range: 5 - 425 amps
• Presettable welding outputs.
• Built-in Line Voltage Compensation holds the output
constant over +/- 10% input fluctuations.
• State of the art inverter technology yields high
power efficiency, excellent welding performance,
lightweight, and compact design.
• Utilizes microprocessor control.
• Electronic over current protection.
• Input over voltage protection
• Manual reconnect switch located on the back panel
with a clear reconnect door to allow easy determina-
tion of input configuration.The reconnect door is fas-
tened with 1/4-turn connectors that allow quick and
easy access to the reconnect area. Circuit breaker
protected auxiliary.
• System Self Configure. The power source analyzes
the remote controls connected to the amphenols
and the desired welding mode to properly determine
the location of trigger and output control.
• Modular options for easy upgrades
• Back lit Status Lights for improved error communi-
cation
• Circuit Breaker Input Switch
• F.A.N. (fan as needed). Cooling fan runs only when
necessary
• Thermostatically protected.
• Designed to the IEC 974-1 Standard.
• IP23S protection rating with potted PC boards for
enhanced ruggedness/reliability.
• Modular construction for easy servicing.
• Aluminum Chassis and Wraparound
• Power Cord included.
EX350i
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