Information presented in this manual and on various labels, tags, and plates on the unit pertains to equipment
design, installation, operation, maintenance, and troubleshooting which should be read, understood, and followed for the safe and effective use of this equipment.
B. Safety
The installation, operation, maintenance, and troubleshooting of arc welding equipment requires practices
and procedures which ensure personal safety and the
safety of others. Therefore, this equipment is to be installed, operated, and maintained only by qualified persons in accordance with this manual and all safety precautions listed in the Arc Welding Safety Precautions in
welding power source Owner’s Manual.
SECTION 2 − SPECIFICATIONS
1-2.SAFETY ALERT SYMBOL AND SIGNAL
WORDS
This safety alert symbol is used with the signal
words WARNING and CAUTION to call attention to the safety statements.
WARNING statements identify procedures or
practices which must be followed to avoid serious personal injury or loss of life.
CAUTION statements identify procedures or
practices which must be followed to avoid minor
personal injury or damage to equipment.
IMPORTANT statements identify special instructions
necessary for the most efficient operation of this equipment.
10-1/2 in
(267 mm)
4 in
(102 mm)
11-3/8 in
(289 mm)
Figure 2-1. Overall Dimensions
2-1.DESCRIPTION
The CS-3A spot control is designed to add electronically
timed spot welding and burnback capabilities to the
SWINGARC and 50 Series wire feeders. The burnback
Ref. ST-072 762-C
capability of the CS-3A is available for both spot and
continuous welding.
The spot control operates on 24 VAC, 50/60 Hertz, and
draws 0.5 amperes.
OM-1086 Page 1
Page 4
Spot Time
Spot-Continuous
Switch
Control
Time Range
Switch
SECTION 3 − INSTALLATION
Burnback
Time Control
Figure 3-1. CS-3A Connections And Controls
Wrapper Slots (4)
To Gun Switch Plug
To Trigger Receptacle
On Wire Feeder
To Gas Control
Receptacle On Wire Feeder
To Plug From
Gas Valve
ST-072 762-C
WARNING: ELECTRIC SHOCK can kill.
• Do not touch live electrical parts.
• Shut down wire feeder and welding power
source, and disconnect input power employing lockout/tagging procedures before inspecting or installing.
Lockout/tagging procedures consist of padlocking line disconnect switch in open position, removing fuses from fuse box, or shutting off and
red-tagging circuit breaker or other disconnecting device.
3-1.INSTALLATION OF SPOT CONTROL
(Figure 3-1)
The CS-3A spot control can be mounted on top of a wire
feeder or DVC, if applicable. To install spot control, proceed as follows:
1.Loosen the four wrapper screws on top of wire
feeder/DVC.
2.Place spot control on top of wire feeder/DVC with
control panels facing the same direction.
3.Position control so that wrapper slots correspond
to feeder/DVC control box screws.
4.Slide control down onto screws.
5.Tighten wrapper screws.
3-2.GAS CONNECTIONS TO WIRE FEEDER
(Figure 3-1, And Diagrams 3-1 Thru 3-5)
IMPORTANT: When using a dual wire feeder, spot ca-
pability may be added to either side. Trigger and gas/
water control connections must be made to the appropriate side.
OM-1086 Page 2
1.Disconnect gas valve plug from appropriate gas
control receptacle on rear of wire feeder.
2.Connect gas valve plug to 6-socket female plug
from left side of spot control rear panel (see
Figure 3-1).
3.Connect 6-pin male plug from spot control to appropriate gas control receptacle on wire feeder
(see Figure 3-1).
3-3.GUN CONNECTIONS TO WIRE FEEDER
(Figure 3-1, And Diagrams 3-1 Thru 3-5)
IMPORTANT: When using a dual wire feeder, spot ca-
pability may be added to either side. Trigger and gas/
water control connections must be made to the appropriate side.
IMPORTANT: Place Contactor Control switch on welding power source in the REMOTE position.
1.Connect 4-pin male plug on trigger cord of spot
control to TRIGGER receptacle on front of wire
feeder (see Figure 3-1). Rotate threaded collar
fully clockwise.
2.Connect 4-socket female plug on trigger cord of
spot control to gun switch plug (see Figure 3-1).
Rotate threaded collar fully clockwise.
IMPORTANT: If CS-3A is used with a DDSC control, the
CS-3A gun switch plug must be connected to the DDSC,
and the plug from the DDSC that normally connected to
the TRIGGER receptacle on the wire feeder must be
connected to the CS-3A trigger control plug.
Page 5
Welding
Power Source
Wire Drive
Motor
Work
115 Volts/Contactor
Trigger
Control Cord
Control Cord
FRONT VIEW
REAR VIEW
Trigger Control
Interconnecting
Cord
CS-3A
Control
Wire Feeder
Gas/Water
Control Cords
ST-071 073-B
Diagram 3-1. Connection Diagram For CS-3A Used On Single Wire Feeder
Welding
Power Source
FRONT VIEW
Right Gun
Trigger Control
Cord
Wire Drive
Motor And
Drive Assembly
115 Volts/Contactor
Control Cord
Trigger Control
Interconnecting
Cord
CS-3A
Control
Wire Feeder
Gas/Water
Control Cords
Left Gun
Work
*When using a Dual Wire Feeder, spot capability may be added to either side (left side illustrated). Trigger and gas/water control
connections must be made to appropriate side.
Trigger Control
Cord*
REAR VIEW
ST-071 074-B
Diagram 3-2. Connection Diagram For CS-3A Used On Dual Wire Feeder
OM-1086 Page 3
Page 6
Welding Power
Source
Wire Drive Motor
And Drive Assembly
IMPORTANT: Interconnections of CS-3A
with welding power source, wire feeder,
DVC, and DDSC shown only. The DVC
Owner’s Manual shows remainder of the
connections.
115 Volts/Contactor
Control Cord
REAR VIEW
Gas/Water
Control Cords
CS-3A Control
DVC Control
FRONT VIEW
DDSC Control
Trigger connections when DDSC is not used.
*When using a Dual Digital Wire Feeder, spot capability may be added to either side (left side illustrated).
Trigger and gas/water control connections must be made to the appropriate side.
Diagram 3-3. Connection Diagram For CS-3A Used On Dual Digital Wire Feeder
Welding Power
Source
Gun Trigger
Cord
Wire Drive Motor
And Drive Assembly
Gun
*Current Relay − DVC MP Models Only.
*
Work
Work
Output Control
Cord
Voltage
Sensing
Leads
Left Gun
Trigger Control
Cord*
115 Volts/Contactor
Control Cord
Gas Control
Gas Valve
Interconnecting
Cord
Trigger Control
Interconnecting
Cord
CS-3A Control
DVC Control
DDSC Control
Remote Voltage
Control Cord
Digital Wire
Speed Control Cord
Gas Valve
Trigger Control
Interconnecting
Gun Trigger
Control Cord
Wire Feeder
115 Volts/Contactor
Control Cord
Cord
Dual Digital
Wire Feeder
Feeder
Remote Wire
Cord
ST-071 075-B
FRONT VIEW
REAR VIEW
Ref. ST-092 390-B
OM-1086 Page 4
Diagram 3-4. Connection Diagram For CS-3A Used On DVC Control, DDSC Control
And Single Digital Wire Feeder
Page 7
Welding Power
Source
Output Control
Cord
115 Volts/Contactor
Control Cord
Trigger Hold
Control
CS-3A Control
DVC Control
DDSC Control
Remote Voltage
Control Cord
Digital Wire
Feeder
FRONT VIEW
Gun Trigger
Cord
*
Wire Drive Motor
And Drive Assembly
Gun
*Current Relay − DVC MP Models Only.
Diagram 3-5. Connection Diagram For CS-3A Used On Trigger Hold Control, DVC Control,
Work
Voltage
Sensing
Leads
Gas Valve
Interconnecting
Cord
Gas Control
Cord
DDSC Control, And Single Digital Wire Feeder
Remote Wire
Speed Control Cord
Gas Valve
Trigger Control
Interconnecting
Cords
Wire Feeder
115 Volts/Contactor
Control Cord
REAR VIEW
Ref. ST-092 390-B
3-4.RECONNECTION FOR MOMENTARY TRIG-
GER OPERATION
The CS-3A is factory wired to complete each timed weld
only if the gun switch is held closed throughout the spot
weld cycle. If the gun switch is released before the
SPOT TIME control times out, the spot weld will not be
completed.
The CS-3A can be wired to complete each timed weld
after a momentary closure of the gun switch. In this
case, the spot weld cycle ends only after the SPOT
TIME control times out. To wire CS-3A for momentary
trigger operation, proceed as follows:
WARNING: Read and follow safety information at beginning of entire Section 3 before
proceeding.
1.Remove wrapper.
2.Locate unconnected end of lead 44 originating at
terminal B on terminal strip 1T.
3.With SPOT-CONTINUOUS switch S51 in the
CONTINUOUS position, connect friction connector on lead 44 to the normally-open terminal (the
only unused terminal) on S51.
4.Reinstall wrapper.
OM-1086 Page 5
Page 8
SECTION 4 − OPERATOR CONTROLS
4-1.SPOT-CONTINUOUS SWITCH (Figure 3-1)
The SPOT-CONTINUOUS switch provides selection of
either a continuous weld or a timed weld operation.
Placing the SPOT-CONTINUOUS switch in the SPOT
position provides weld current for the time period set by
TIME RANGE switch and SPOT TIME control. The
SPOT TIME control begins to time out when the gun trigger is closed.
Placing the SPOT-CONTINUOUS switch in the CONTINUOUS position provides weld current for as long as
the gun trigger is closed.
4-2.TIME RANGE SWITCH (Figure 3-1)
The TIME RANGE switch provides selection of the spot
weld time range. Placing the TIME RANGE switch in the
.2 to 2.5 SEC position provides .2 to 2.5 seconds of weld
time. Placing the TIME RANGE switch in the 2.5 to 5
SEC position provides 2.5 to 5 seconds of weld time.
4-3.SPOT TIME CONTROL (Figure 3-1)
The SPOT TIME control provides selection of spot weld
time within the time range selected. The scale surround-
ing the SPOT TIME control is calibrated in seconds and
provides a direct reading of spot time when the TIME
RANGE switch is in the .2 to 2.5 SEC position. Double
the scale to read spot time when the TIMER RANGE
switch is in the 2.5 to 5 SEC position.
Rotating SPOT TIME control clockwise increases spot
weld time.
4-4.BURNBACK TIME CONTROL (Figure 3-1)
The BURNBACK TIME control provides selection of the
time that weld current is present on the electrode wire
after wire has stopped feeding. By keeping weld current
present on the electrode wire, the wire burns away from
the workpiece and toward the contact tip.
If electrode wire sticks to workpiece, the BURNBACK
TIME control setting should be increased.
If electrode wire burns back into contact tip, the BURNBACK TIME control setting should be decreased.
The scale surrounding the BURNBACK TIME control is
calibrated in seconds. Burnback time ranges from 0
through .25 seconds.
WARNING: ELECTRIC SHOCK can kill;
MOVING PARTS can cause serious injury;
IMPROPER AIRFLOW AND EXPOSURE TO
ENVIRONMENT can damage internal parts.
• Do not touch live electrical parts
• Keep all covers and panels in place while op-
erating.
Warranty is void if this control or the welding
power source is operated with any portion of the
outer enclosure removed.
ARC RAYS, SPARKS, AND HOT SURFACES
can burn eyes and skin; NOISE can damage
hearing.
• Wear correct eye, ear, and body protection.
FUMES AND GASES can seriously harm
your health.
• Keep your head out of the fumes.
• Ventilate to keep from breathing fumes and
gases.
• If ventilation is inadequate, use approved
breathing device.
WELDING WIRE can cause puncture
wounds.
• Do not point gun toward any part of the body,
any conductive surface, or other personnel.
OM-1086 Page 6
SECTION 5 − SEQUENCE OF OPERATION
HOT METAL, SPATTER, AND SLAG can
cause fire and burns.
• Watch for fire.
• Keep a fire extinguisher nearby, and know
how to use it.
• Do not use near flammable material.
• Allow work and equipment to cool before han-
dling.
MAGNETIC FIELDS FROM HIGH CURRENTS
can affect pacemaker operation.
• Wearers should consult their doctor before
going near arc welding, gouging, or spot
welding operations.
See Arc Welding Safety Precautions in welding
power source Owner’s Manual for basic welding
safety information.
5-1.GAS METAL ARC WELDING (GMAW)
WARNING: Read and follow safety information at beginning of entire Section 5 before
proceeding.
1.Install and prepare welding power source according to its Owner’s Manual.
2.Install Spot Control as instructed in Section 3.
3.Install and prepare wire feeder according to its
Owner’s Manual.
Page 9
4.Wear dry insulating gloves and clothing, and
wear welding helmet with proper filter lens according to ANSI Z49.1
5.Prepare for welding as follows:
a. Connect work clamp to clean, bare metal at
workpiece.
b. Select and obtain proper welding wire, and
thread as instructed in wire feeder Owner’s
Manual.
IMPORTANT: Place Contactor Control switch on welding power source in the REMOTE position.
6.Energize welding power source and wire feeder.
Turn on shielding gas at its source.
b. Rotate the SPOT TIME control to the desired
setting (see Section 4-3).
10.Make adjustments to wire feeder.
11.Depress gun trigger and begin welding.
IMPORTANT: The gun trigger must be held closed until
the SPOT TIME control has timed out thereby completing the spot weld cycle unless the unit was reconnected
for momentary operation (see Section 3-4).
5-2.SHUTTING DOWN
1.Stop welding.
7.Rotate BURNBACK TIME control to the desired
setting (see Section 4-4).
8.Place the SPOT-CONTINUOUS switch in the desired position (see Section 4-1).
9.If the SPOT mode is being used:
a. Position TIME RANGE switch to time range de-
sired (see Section 4-2).
SECTION 6 − MAINTENANCE & TROUBLESHOOTING
6-1.ROUTINE MAINTENANCE (Table 6-1)
IMPORTANT: Every six months inspect the labels on
this unit for legibility. All precautionary labels must be
maintained in a clearly readable state and replaced
when necessary. See Parts List for part number of precautionary labels.
WARNING: ELECTRIC SHOCK can kill.
• Do not touch live electrical parts.
• Shut down wire feeder and welding power
source, and disconnect input power employing lockout/tagging procedures before inspecting, maintaining, or servicing.
Lockout/tagging procedures consist of padlocking line disconnect switch in open position, removing fuses from fuse box, or shutting off and
red-tagging circuit breaker or other disconnecting device.
MOVING PARTS can cause serious injury.
• Keep away from moving parts.
HOT SURFACES can cause severe burns.
• Allow cooling period before servicing.
Troubleshooting to be performed only by qualified persons.
2.Shut down welding power source and wire feeder.
3.Turn off shielding gas.
WARNING: HIGH CONCENTRATION OF
SHIELDING GAS can harm health or kill.
• Shut off gas supply when not in use.
Table 6-1. Maintenance Schedule
Frequency*Maintenance
Every month.Units in heavy service environ-
ments: Check labels and interconnecting cords.
Every 6 Months. Check all labels (see IMPORTANT
block, Section 6-1) and interconnecting cords.
*Frequency of service is based on units operated 40
hours per week. Increase frequency of maintenance if
usage exceeds 40 hours per week.
Every six months, inspect all interconnecting cords and
plugs for damage to the insulation jacket. Repair or replace cord(s) as necessary.
6-2.CIRCUIT BOARD HANDLING PRECAUTIONS
WARNING: ELECTRIC SHOCK can kill.
• Do not touch live electrical parts.
• Shut down wire feeder and welding power
source, and disconnect input power employing lockout/tagging procedures before inspecting, maintaining, or servicing.
Lockout/tagging procedures consist of padlocking line disconnect switch in open position, removing fuses from fuse box, or shutting off and
red-tagging circuit breaker or other disconnecting device.
OM-1086 Page 7
Page 10
CAUTION: ELECTROSTATIC DISCHARGE
(ESD) can damage circuit boards.
• Put on properly grounded wrist strap BE-
FORE handling circuit boards.
• Transport circuit boards in proper static-
shielding carriers or packages.
• Perform work only at a static-safe work area.
INCORRECT INSTALLATION or misaligned
plugs can damage circuit board.
• Be sure that plugs are properly installed and
aligned.
EXCESSIVE PRESSURE can break circuit
board.
• Use only minimal pressure and gentle move-
ment when disconnecting or connecting
board plugs and removing or installing board.
6-3.TROUBLESHOOTING
WARNING: ELECTRIC SHOCK can kill.
• Do not touch live electrical parts.
• Shut down wire feeder and welding power
source, and disconnect input power employing lockout/tagging procedures before inspecting, maintaining, or servicing.
Lockout/tagging procedures consist of padlocking line disconnect switch in open position, removing fuses from fuse box, or shutting off and
red-tagging circuit breaker or other disconnecting device.
MOVING PARTS can cause serious injury.
• Keep away from moving parts.
HOT SURFACES can cause severe burns.
• Allow cooling period before servicing.
Troubleshooting to be performed only by qualified persons.
It is assumed that the unit was properly installed according to Section 3 of this manual, the operator is familiar
with the function of controls, the control and welding
power source were working properly, and that the
trouble is not related to the welding process.
The following table is designed to diagnose and provide
remedies for some of the troubles that may develop in
this spot control. Use this table in conjunction with the
circuit diagram while performing troubleshooting procedures. If the trouble is not remedied after performing
these procedures, contact the nearest Factory Authorized Service Station/Service Distributor. In all cases of
equipment malfunction, strictly follow the manufacturer’s procedures and instructions.
TROUBLEPROBABLE CAUSEREMEDY
Wire feeder energizes but
will not feed.
Electrode wire feeds but is
not electrically hot.
Extremely short or infinitely
long spot and/or burnback
time.
Table 6-2. Troubleshooting
Switch control plug PLG51 loose.Secure PLG51 in receptacle on control.
Gun switch.Replace gun switch.
Plug from welding power source contac-
tor control receptacle loose or loose
lead(s) in the plug or receptacle.
Printed circuit board.Replace printed circuit board located on bot-
Secure plug in receptacle at control and
welding power source.
Be sure that the leads inside of receptacles
and plug are secured to their respective terminals.
+When ordering a component originally displaying a precautionary label, the label should also be ordered.
BE SURE TO PROVIDE MODEL AND STYLE NUMBER WHEN ORDERING REPLACEMENT PARTS.
OM-1086 Page 13
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