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C-1
ACCESSORIES
C-1
Factory Installed Options
DIODE OPTION
This internally installed option allows the use of the
cold start and cold electrode sensing features of the
NA-3, NA-5 or NA-5R.
MULTIPROCESS SWITCH
Factory or field installed kit that mounts on the front of
the DC-400, and includes hinged covers over its out-
put studs. The switch has three positions: Positive
semiautomatic / automatic, negative semiautomatic /
automatic, and stick / air carbon arc. Required when
using the DC-400 for both semiautomatic/automatic
and stick/air carbon arc. The field installed kit equiva-
lent is identified as K804-1. For details on the
Multiprocess Switch, see the Installation of Equipment
section.
Field Installed Options
REMOTE OUTPUT CONTROL
(K857 WITH K864 ADAPTER OR K775 )
The K857 has a 6-pin MS-style connector. The K857
requires a K864 adapter cable which connects to the
14-pin connector on the machine.
An optional “remote output control” is available. This
is the same remote control that is used on the Lincoln
R3R, and DC-600 power sources (K775). The K775
consists of a control box with 28 ft (8.5m) of four con-
ductor cable. This connects to terminals 75, 76, and
77 on the terminal strip and the case grounding screw
so marked with the symbol on the machine.
These terminals are located behind the control panel
on the front of the power source. This control will give
the same control as the output control on the
machine.
AMPTROL™ ADAPTER CABLE (K843)
A five wire cable, 12” (.30m) long, is available for easy
connection of standard K963 Hand Amptrol or K870
Foot Amptrol. The cable has a 6-pin MS-style con-
nector which connects to the Amptrol and terminals
which connect to 75, 76 and 77 on the machine termi-
nal strip and to the case grounding screw. The
Amptrol will control the same range of output as the
current control on the welder. (If a smaller range of
control is desired for finer adjustment, a K775
Remote may be used in conjunction with the Amptrol
Adapter Cable Kit. Connection information is included
with the Amptrol Adapter Cable Kit.) The Amptrol arc
start switch is nonfunctional in this application.
REMOTE CONTROL ADAPTER CABLE (K864)
A “V” cable 12” (.30m) long to connect a K857
Remote Control, K963 Hand Amptrol or K870 Foot
Amptrol (6-pin connector) with a wire-feeder (14-pin
connector) and the machine (14-pin connector). If a
remote control or amptrol is used alone the wire-feed-
er connection is then not used.
MULTIPROCESS SWITCH (K804-1)
Field installed kit that mounts on the front of the DC-
400, and includes hinged covers over its output studs.
The switch has three positions:Positive semiautomat-
ic/automatic,negative semiautomatic/automatic, and
stick/air carbon arc. Required when using the DC-400
for both semiautomatic/automatic and stick/air carbon
arc. The field installed kit is equivalent to the factory
installed option. For details on the Multiprocess
Switch, see the section for Installation of Equipment
Required for Recommended Processes.
CAPACITOR DISCHARGE CIRCUIT (K828-1)
Circuit that mounts inside the DC-400.
Recommended when:
1) DC-400 is used in conjunction with any LN-23P or
older LN-8 or LN-9 semiautomatic wire-feeder.
Eliminates possible arc flash re-start of weld when
trigger interlock is used. Not required with current
LN-8 (above Code 8700), or LN-9’s with serial
numbers above 115187 (manufactured after
12/83), or any LN-9 having an L6043-1 Power PC
Board.
2) DC-400 is used with an LN-22 equipped with an
older K279 Contactor-Voltage Control Option.
Eliminates electrode overrun when gun trigger is
released. Not required when later K279 (above
Code 8800) is used.
3) DC-400 is used with any semiautomatic
wire-feeder and possible small spark, if electrode
touches work just after gun trigger is released, is
objectionable.
DC-400
STRAIGHT PLUG (14 PIN)
TO POWER SOURCE
CABLE RECEPTACLE (6 SOCKET)
CABLE RECEPTACLE (14 SOCKET)
TO: 1) K857 REMOTE CONTROL
2) K963 HAND AMPTROL
3) K870 FOOT AMPTROL
TO LN-7 WIRE FEEDER