Basic Sub Arc (Saw) Welding - Miller Electric Subarc DC 650 Owner's Manual

4-13. Basic Sub Arc (SAW) Welding

.
Customer must supply the following: power source, power source control cable, wire drive assembly, wire drive assembly cable, drive rolls, gun,
welding wire, weld cables, remote voltage sense leads, and flux system for the desired application.
A. Basic Sub Arc (SAW) Equipment Connections
77 76 75
C E D
REMOTE
OUTPUT
CONTROL CONTACTOR
+
Submerged
Arc
32 – 2 4 –
I J A B N
115 VAC 24 VAC REMOTE
REMOTE REMOTE VOLTAGE
CONTACTOR SENSE
14-Pin Welding
Power Source
Control Cord
+
−
Weld Cables
– 31 – –
P K M L
GND REMOTE
POWER
ON/OFF
193 587-A
HDC Controller
10-Pin Motor
Control Cord
From Terminal
Strip 1T Terminal P
From Terminal Strip
1T Terminal N
!
Turn off welding power
source and weld control, and
disconnect input power be-
fore making connections.
.
Use remote voltage sense
leads in all applications.
.
Suggested size for remote volt-
age sense wire is 12 gauge or
larger.
.
For better performance for
most Sub Arc (SAW) applica-
tions, make connections to the
high inductance weld output
terminal.
.
Polarity: For DCEP (Reverse
Polarity), connect weld cables
and voltage sense leads as
shown. For DCEN (Straight
Polarity), reverse weld cables
and voltage sense leads.
Flux
System
Flux
Valve
Wire Drive
Assembly
Workpiece
804 724-A
OM-236 684 Page 21