Lincoln Electric Red-D-Arc EX350i, Operator'S Manual

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B-8
OPERATION
B-8
EX350i
LN-10/DH-10 Wire Feeder Compatibility Note:
The LN-10 and DH-10 feeders can be used to pulse
weld and in the power mode with the panel. The dis-
plays on the LN-10 & DH-10 do not show the wire
feed speed or power.
8. HOT START and ARC CONTROL features have
different functions depending on the welding Mode
that is active. Each feature is described under the
welding mode heading.
(See Item 7 or 7.A for speci-
fied Mode Operations) (See Figure 1 or 2)
LOWER CASE PANEL (See Figure 1)
The output studs, line switch and remote connector
are located on the lower case front.
9. Both STUDS contain "Twist-Mate" connector
inserts.
• The Negative stud is configured to accept the
pass through gas system.
10. The ON-OFF switch is a 3-phase circuit breaker
rated at 100 amps per leg.
11. The METER POLARITY switch is located above
the output connectors. The switch provides a work
connection for wire feeder voltmeters. Place the
switch in the position of the electrode polarity indi-
cated by the decal.
The switch does not change
the welding polarity.
12. 3-PIN AMPENOL for remote control.
REMOTE CONTROL of the OUTPUT CONTROL and
WELD TERMINALS
The EX350i has auto sensing of remote output con-
trols.If after connecting or removing a remote, the
EX350i is not configured the way you would like the
local or remote control settings can be changed by
pushing the OUTPUT CONTROL or WELD TERMI-
NAL button. (A user cannot select between the 3 and
14 pin amphenols.)
CV modes
• The remote will default to the 14-pin amphenol
remote if a remote is connected to either of the 14-
pin amphenols and the 3-pin amphenol. Note: Only
one of the 14-pin amphenols can have a remote
control connected at a time. If no remote is connect-
ed to either of the 14-pin amphenols then the
remote will default to the 3-pin amphenol if a remote
is connected to it.
• If a remote control is connected or is not connect-
ed to any of the amphenols the WELD TERMINAL
control will default to REMOTE.
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.