Lincoln Electric IM678 RED-D-ARC EX350i - Manual (Page 15)

B-4 OPERATION B-4
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.)
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.
EX350 i