Lincoln Electric IM743 INVERTEC V350-PIPE - Manual (Page 14)

B-3 OPERATION B-3
CV-INNERSHIELD: The CV-Innershield mode fea-
tures continuous control from 15 to 29 volts. This
mode was intended primarily for 5/64 NR 207 on pipe
welding applications.
• The Hot Start control is not used in the CV-FLUX
CORED mode.
• The Arc Control regulates pinch effect. At the mini-
mum setting (-10), minimizes pinch and results in a
soft arc. At the maximum setting (+10), maximizes
pinch effect and results in a crisp arc. The pinch
control was optimized for NR207 at an Arc Control
setting 0.0.
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 for specified
Mode Operations) (See Figure 1.B)
LOWER CASE PANEL
The output studs, line switch and remote connector
are located on the lower case front.
9. ELECTRODE CONNECTIONS contain "Twist-
Mate" connector inserts.
• The Negative connection is configured to accept
the pass through gas system.
10. ON-OFF SWITCH- is a 3-phase circuit breaker
rated at 100 amps per leg.
11. 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. 6-PIN MS-STYLE CONNECTOR- for remote control.
REMOTE CONTROL OF THE OUTPUT
CONTROL AND WELD TERMINALS
The Invertec V350-PIPE has auto sensing of remote
output controls.If after connecting or removing a
remote, the Invertec V350-PIPE did not configured the
way you would like the local or remote control settings
can be changed by pushing the OUTPUT CONTROL
or WELD TERMINAL button. (A user cannot select
between the 6 and 14 pin MS-style connectors.)
CV INNERSHIELD
• The remote will default to the 14-pin MS-style con-
nectors remote if a remote is connected to either of
the 14-pin MS-style connectors and the 6-pin MS-
style connectors. Note: Only one of the 14-pin MS-
style connectors can have a remote control connect-
ed at a time. If no remote is connected to either of
the 14-pin MS-style connectors then the remote will
default to the 6-pin MS-style connectors if a remote
is connected to it.
• In the CV mode, the WELD TERMINAL control will
default to REMOTE.
CC-Stick modes
• The remote will default to only the 6-pin MS-style
connector 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 Invertec V350-PIPE ’ s Output Control can be
controlled by a potentiometer connected between
77 & 75 with the wiper connected to 76.
• 14-Pin Ms-style connector lead 75 is pin G, lead 76
is pin F and lead 77 is pin E.
• 6-Pin Ms-style connector lead 75 is pin C, lead 76 is
pin B and lead 77 is pin A.
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 Invertec
V350-PIPE
’ s front panel Output Control.)
• Remotes of this type offered by Lincoln Electric are
the K857, K812 and K870.
V350-PIPE