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A-6
INPUT VOLTAGE CHANGE OVER
(FOR MULTIPLE INPUT VOLTAGE
MACHINES ONLY)
Welders are shipped connected for the highest input
voltage listed on the rating plate. To move this con-
nection to a different input voltage, see the diagram
located on the inside of the input access door. (Figure
A.1.) If the main reconnect switch or link position is
placed in the wrong position, the welder will not pro-
duce output power.
If the Auxiliary (A) lead is placed in the wrong position,
there are two possible results. If the lead is placed in
a position higher than the applied line voltage, the
welder may not come on at all. If the auxiliary (A) lead
is placed in a position lower than the applied line volt-
age, the welder will not come on, and the two circuit
breakers in the reconnect area will open. If this occurs,
turn off the input voltage, properly connect the (A) lead,
reset the breakers, and try again.
I ON
POWERWAVE 455/R
O OFF
WORK LEAD
INSTALLATION
FIGURE A.2 – MULTIPLE POWER WAVE CONNECTIONS
TWO POWER WAVES
ELECTRODE
CONNECT ALL WELDING
WORK LEADS AT THE
BEGINNING OF THE JOINT
POWER WAVE 455M/MSTT
WELDING WITH MULTIPLE POWER
WAVES
CAUTION
Special care must be taken when more than one Power
Wave is welding simultaneously on a single part. Arc
blow and arc interference may occur or be magnified.
Each power source requires a work lead from the work
terminal to the welding fixture. Do not combine all of the
work leads into one lead. The welding travel directions
should be in the direction moving away from the work
lead as shown in Figure A.2. Connect all of the work
sense leads from each power source to the work piece
at the end of the weld.
For the best results when pulse welding, set the wire
size and wire feed speed the same for all the Power
Waves.
POWERWAVE 455/R
CONNECT ALL WORK
SENSE LEADS AT THE
END OF THE JOINT
WORK LEAD
A-6
I ON
O OFF
ELECTRODE
SENSE LEAD
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