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OWNER’S MANUAL
OMĆ201 344
March 2001
For Paralleling Control
1. Safety Symbol Definitions
Means Warning! Watch Out! There are possible hazards
with this procedure! The possible hazards are shown in
the adjoining symbols.
Have only trained and qualified persons install, operate,
or service this unit. Call your distributor if you do not
understand the directions. For WELDING SAFETY and
EMF information, read wire feeder and welding power
source manuals.
Beware of electric shock from wiring. Keep all panels
and covers closed.
Breathing welding fumes and gases can harm your
health. Welding requires good ventilation. If ventilation is
impossible, such as when welding in a confined space,
use an air-supplied respirator.
Welding sparks can cause fire or explosion. Move
flammables away. Do not weld on closed tanks or
barrels – they can explode. Clean tanks or barrels
properly.
Arc rays can burn eyes and skin – wear face protection
(helmet or face shield) with correct shade of filter, and
cover exposed skin with nonflammable clothing.
Wear safety glasses with side shields. Static electricity can damage parts on circuit boards. Put
on grounded wrist strap before touching circuit board.
2. Specifications
Allows Easy Connection Of Two Welding Power Sources For Increased Amperage Applications
Welding Power Source Must Have Full Remote 14 Capability
Uses 24 volts AC, 60 Hz Input Power Supplied Through Master Welding Power Source 14-Pin
Receptacle
Remote Control Connections Through 14-Pin Receptacle
802 737
Dimensions: 3 in (76 mm) Deep, 7-1/2 in (191 mm) Wide, 10 in (254 mm) High
Weight: 6.1 lb (2.8 kg)
OM-201 344 Page 2
3. Setting DIP Switch S1
Ref. 802 741
Turn Off welding power sources.
Remove control cover.
1 DIP Switch S1
2 DIP Switch Settings
Place switches in positions shown
for the type of slave welding power
source you are using.
. For DIP switch settings for weld-
ing power sources not listed,
see Section 4.
Install cover or proceed to Section 4.
OFF
1
23
4
5678
Summit Arc
OFF
1
23
4
5678
Dimension 1000
OFF
1
23
4
5678
Dimension/
Goldstar 652
OFF
1
23
4
5678
Dimension/
Goldstar 452
2
1
OM-201 344 Page 3
4. Fine Tuning Adjustment Procedure For Better Load Sharing (Optional)
Ref. 802 741
Turn Off welding power sources.
Remove cover.
1P2
2 DIP Switch S1
3 DIP Switch Settings For Units
Listed
If you are using this parallel control
with a Summit Arc, Dimension 1000,
Dimension 452 or 652, or Gold Star
452 or 652, set DIP switch(s) as
shown, and adjust P2 to match the
slave machine current output to that
of the master machine.
4 DIP Switch Settings For Ma-
chines Not Listed Above
If you are using this parallel control
with a machine not listed, set DIP
switch as shown, and adjust P2 to
match the slave machine current
output to that of the master machine.
Install cover.
OFF
1
23
4
5678
Summit Arc
OFF
1
23
4
5678
Dimension 1000
OFF
1
23
4
5678
Dimension/
Goldstar 452 Or 652
3
2
OFF
1
23
4
5678
Other Machines
Than Those Listed
4
1
5. Mounting Control On Welding Power Source
802 738
Turn Off welding power source.
1 Welding Power Source
2 Paralleling Control
Control can be mounted on top or
on right side of welding power
source.
To secure control, loosen sheet
metal screw at desired location.
Place control center mounting hole
over screw as shown. Tighten
screw.
1
2
OM-201 344 Page 4
6. Connecting Control Cords To Welding Power Sources
802 739
Turn off welding power sources.
Make connections as shown.
1 Master Welding Power Source
2 Paralleling Control
3 Interconnecting Cable And 14-Pin
Plug PLG4
This is the larger diameter of the two inter-
connecting cables.
4 Slave Welding Power Source
5 Interconnecting Cable And 14-Pin
Plug PLG5
6 Remote 14 Receptacle
A remote control device must be used to
control the welding power sources contac-
tor and output.
The Output Contactor control and Output
Adjustment control switches on the weld-
ing power sources must be placed in the
Remote position.
Connect plug from remote control device
to receptacle as follows: align keyway, in-
sert plug, and tighten threaded collar.
See Section 7 for socket information if re-
mote control device plug does not match
receptacle.
1
2
3
4
5
6
From remote
control device.
7. Welding Power Source Output Connections
802 740
Turn off welding power sources.
Y Do not use different polari-
ties at the same time on a
common workpiece when
more than one welding pow-
er source is used.
1 Master Welding Power
Source
2 Paralleling Control
3 Slave Welding Power Source
4 Negative Weld Output Cables
5 Paralleled Negative Weld
Output Cable
6 Positive Weld Output Cables
. The master welding power
source can be in the CC or CV
mode, depending on the par-
ticular application. The slave
welding power source must be
in the CC mode since it will be
duplicating the current put out
by the master power source.
7 Paralleled Positive Weld
Output Cable
Paralleled weld output cables need
to be sized for the largest amount
of weld output available from the
paralleled welding power sources.
See Section 9.
8 Remote 14 Receptacle
Connect remote control device to
Remote 14 receptacle.
. Be sure paralleled weld cables are connected
postive-to-positve and negative-to-negative.
1
2
3
8
4
5
6
7
+
CC
+
CV
–
++
CC CV
–
OM-201 344 Page 5
8. Remote 14 Receptacle RC3 Information
Socket Information
A 24 volts ac from master welding power source.
24 VOLTS AC
B Contact closure to A completes 24 volts ac contactor control circuit.
C Command reference from master welding power source.
REMOTE OUTPUT CONTROL
D Remote control circuit common.
E 0 to +10 volts dc input command signal from remote control.
F Total current feedback of master and slave machines, 1 volt per 200 am-
peres.
H Voltage feedback; 1 volt per 10 arc volts.
I 115 volts, 60 Hz ac from master machine.
115 VOLTS AC
J Contact closure to I completes 115 volts ac contactor control circuit.
GND
K
G
Chassis common.
Circuit common for 24 and 115 volts ac circuits.
9. Weld Cable Size*
Total Cable (Copper) Length In Weld Circuit Not Exceeding
100 ft (30 m) Or Less
150 ft
(45 m)
200 ft
(60 m)
250 ft
(70 m)
300 ft
(90 m)
350 ft
(105 m)
400 ft
(120 m)
Welding
Amperes
10 To 60%
Duty Cycle
60 Thru 100%
Duty Cycle
10 Thru 100% Duty Cycle
100 4 4 4 3 2 1 1/0 1/0
150 3 3 2 1 1/0 2/0 3/0 3/0
200 3 2 1 1/0 2/0 3/0 4/0 4/0
250 2 1 1/0 2/0 3/0 4/0 2-2/0 2-2/0
300 1 1/0 2/0 3/0 4/0 2-2/0 2-3/0 2-3/0
350 1/0 2/0 3/0 4/0 2-2/0 2-3/0 2-3/0 2-4/0
400 1/0 2/0 3/0 4/0 2-2/0 2-3/0 2-4/0 2-4/0
500 2/0 3/0 4/0 2-2/0 2-3/0 2-4/0 3-3/0 3-3/0
600 3/0 4/0 2-2/0 2-3/0 2-4/0 3-3/0 3-4/0 3-4/0
700 4/0 2-2/0 2-3/0 2-4/0 3-3/0 3-4/0 3-4/0 4-4/0
800 4/0 2-2/0 2-3/0 2-4/0 3-4/0 3-4/0 4-4/0 4-4/0
900 2-2/0 2-3/0 2-4/0 3-3/0 3-4/0 4-4/0 4-4/0
1000 2-2/0 2-3/0 2-4/0 3-3/0 4-3/0 4-4/0
1250 2-3/0 2-4/0 3-3/0 4-3/0 4-4/0
1500 2-4/0 3-3/0 3-4/0 4-4/0
*Weld cable size (AWG) is based on either a 4 volts or less drop or a current density of not more than 300 circular mils per ampere. Contact your
distributor for the mm
2
equivalent weld cable sizes.
OM-201 344 Page 6
10. Circuit Diagram
201 330
OM-201 344 Page 7
11.Parts List
1
3
2
4
5
6
7
8
9
10
802 741
Description
Part
No.
Dia.
Mkgs.
Item
No.
Quantity
1 200 874 COVER, top 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 PLG1 201 331 PLUG ASSY, elect 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 PC1 200 433 CIRCUIT CARD ASSY, parallel box 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 115 440 STAND-OFF, no 6-32 x .687 lg .250 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 200 873 CASE 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 RC3 134 735 CONN, circ ms/cpc 14 skt size 20 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 019 663 MOUNT, nprn 15/16 OD x 3/8 rec 3/16 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 010 916 CONN, clamp cable .750 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 PLG5 201 266 CABLE, interconnecting 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 PLG4 201 265 CABLE, interconnecting 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OM-201 344 Page 8
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