Lincoln Electric DC-650 PRO IM463-A - Manual (Page 14)

12. Wire Feeder Receptacle
This is the standard Lincoln, 14-pin, MS-type
(amphenol) receptacle. See the DC-650 PRO
wiring diagram for the pinout diagram of this
receptacle.
13. Rating Plate
This plate contains important information
regarding the code number, serial number, input
voltages, input currents, and output ratings of the
DC-650 PRO. Record the code and serial
numbers in a safe place. These numbers will be
required if replacement parts are needed in the
future.
14. Digital Ammeter
Displays the output amperage when welding. If
set to the SMAW (stick) mode, the ammeter
displays the preset welding current when not
welding. By using this meter, the output current
can be set to a predetermined value before an
arc is struck. This permits repeatability when
changing and setting procedures. The output
current can be preset from the Output Control or
from a remote control attached to the terminal
strip.
15. Digital Voltmeter
Displays the output voltage as measured on the
output studs of the machine.
NOTE: Due to voltage drops in the welding
cables and at cable connection points,
the actual arc voltage may be lower than
that displayed on the voltmeter. Use
welding cables of the proper capacity
and make sure all connections are tight
to minimize this effect.
If set to either the GMAW, FCAW, or SAW
modes, this meter can display the preset welding
voltage when the secondary output contactor is
open (usually when the gun trigger is released).
By using this meter, the output voltage can be
set to a predetermined value before an arc is
struck. This permits repeatability when changing
and setting procedures. The output voltage can
be preset from the Output Control or from a
remote control attached to the terminal strip. The
only exception occurs when the DC-650 PRO is
used with an LN-9 or NA-5; with those wire
feeders, the preset voltage can only be read on
the wire feed unit. The DC-650 PRO voltmeter
will display
“ --- ” when in the LN-9/NA-5 mode.
(see “ Operation with LN-9 or NA-5 Wire Feeder ”
section).
– 14 –
5. Mode Switch
This switch chooses the proper welding mode.
Choose from GMAW (MIG), FCAW (flux-cored),
SAW (submerged arc), or SMAW (stick). This
switch electronically changes the welding
characteristics depending on the mode setting.
NOTE: The welding cables must also be attached to
the proper output studs for best welding
performance (See
“ Output Connections ”
section).
6. Wire Feeder Voltmeter Switch
This switch changes the polarity of the wire feeder
voltmeter sense lead, if the wire feeder is so
equipped. Set to match the electrode polarity so
that the wire feeder voltmeter can display the
welding voltage. This switch has no effect on the
welding output polarity of the DC-650 PRO.
7. Output Terminals Switch
This switch controls the solid-state output
contactor circuitry in the DC-650 PRO. When set
to the
“ On ” position, the output studs are "hot" all
of the time. When in the remote position, the
contactor circuitry is controlled by the equipment
connected to terminals 2 and 4, usually a wire
feeder. Normally, this switch is turned
“ On ” only
when stick welding, arc gouging, or when using
an arc powered wire feeder (such as an LN-25).
8. Power Switch and Pilot Light
Turns the DC-650 PRO on and off. The red pilot
light illuminates when the machine is turned
“ On ” .
9. Circuit Breakers
These circuit breakers provide overload protection
for the auxiliary circuits. One 15 amp breaker is
for the wire feeder 115V AC circuit (31 and 32),
another 15 amp breaker is for the spare 115V AC
auxiliary circuit (33 and 34). The 10 amp breaker
is for the 42V AC wire feeder circuit (41 and 42).
10. Strain Reliefs
These strain reliefs are provided for control cables
going to the terminal strips.
11. Terminal Strip Door
This access door provides protection for the
terminal strip connections. (Lead numbers shown
for this panel in Figure 3). The door can be
opened by turning the fastener one-quarter turn
counter-clockwise. Reverse this procedure to
latch the door shut.