Safety Precautions; Power-Up Sequence; Duty Cycle; Common Welding Procedures - Lincoln Electric POWER WAVE STT Operator's Manual

POWER WAVE ® STT ® MODULE

SAFETY PRECAUTIONS

Read this entire section of operating instructions before
operating the machine.
WARNING
ELECTRIC SHOCK can kill.
• Disconnect input power before servicing.
• Do not operate with covers removed.
• Do not touch electrically live parts.
• Only qualified persons should install, use or
service this equipment.
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POWER-UP SEQUENCE

The POWER WAVE ® STT ® MODULE will be powered up at the same
time as the power source. The status light will blink green for about
a minute while the system is configuring. After this time, the status
lights will turn a steady green indicating the machine is ready.
The fan in the POWER WAVE ® STT
power source fan is activated.

DUTY CYCLE

The POWER WAVE ® STT ® MODULE is rated at 450 amps at a 100%
duty cycle. It is further rated to support 500 amps at a 60% duty
cycle and 550 amps at a 40% duty cycle. The duty cycle is based
on a ten-minute period. A 60% duty cycle represents 6 minutes of
welding and 4 minutes of idling in a ten-minute period.
Note:
The POWER WAVE ® STT ® MODULE is capable of withstanding a
peak output current of 750 amps. The allowable maximum aver-
age output current is time dependant, and ultimately limited by the
host power source.

COMMON WELDING PROCEDURES

MAKING A WELD
Choose the electrode material, electrode size, shielding gas, and
process (GMAW, GMAW-P, GMAW STT etc.) appropriate for the
material to be welded.
Select the weld mode that best matches the desired welding
process. The standard weld set shipped with the host power source
encompasses a wide range of common processes that will meet
most needs. If the STT modes are not available, or if a special weld
mode is desired, visit www.powerwavesoftware.com or contact the
local Lincoln Electric sales representative.
® MODULE will run only when the
To make a weld, the power source needs to know the desired weld-
ing parameters. Set the parameters on the user interface typically
located on the wire feeder. The user interface sends the parameters
(arc voltage, wire feed speed, UltimArc
source via the ArcLink communication protocol through the control
®
cables. The power source controls the POWER WAVE
ULE based on the selected weld mode.
For a more detailed description, and specific operating instructions,
consult the power source Instruction Manual.
RECOMMENDED PROCESSES AND EQUIPMENT
RECOMMENDED PROCESSES
The POWER WAVE ® STT ®
supported by the host power source including, but not limited to
SMAW, GMAW, GMAW-P, GMAW-STT.
PROCESS LIMITATIONS
The POWER WAVE ® STT ®
the load, and therefore processes are only limited by the current and
duty cycle ratings listed in the specifications for the product. The
POWER WAVE ® STT ® MODULE is designed to protect itself from the
excessive transient voltages associated with highly inductive weld
circuits. These high inductance circuits may result in unsatisfactory
performance, but will not damage the module.
lthough the STT Module can be configured to support negative elec-
trode polarity processes, such as Innershield, the STT process must
be configured to use positive electrode polarity.

EQUIPMENT LIMITATIONS

The POWER WAVE ® STT ®
patible medium range "S" – series POWER WAVE
sources such as the S350.
B-1
OPERATION
value, etc.), to the power
TM
® STT
MODULE is recommended for all process
MODULE is unaffected by the voltage at
MODULE is intended for use with com-
® MOD-
® power