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FLEXTEC 650x
HIGH TEmPERATURE OPERATION
WELDER OUTPUT RATINGS AT 55°C
ELEVATED TEMPERATURES
AMPS
Duty Cycle
600
100%
650
50%
750
30%
WARNING
ELECTRIC SHOCK can kill.
Only a qualified electrician should connect the input leads to
the Flextec 650x. connections should be made in
accordance with all local and national electrical codes and
the connection diagram located on the inside of the
reconnect/input access door of the machine. Failure to do
so may result in bodily injury or death.
INPUT CONNECTION
(See Figure A.1)
Use a three-phase supply line. A 1.75 inch (45 mm) diameter
access hole for the input supply is located on the case back.
Remove the reconnect access panel located on the case back and
connect W, V, U and ground according to the Input Supply
Connection Diagram decal.
POWER SUPPLY TERMINAL
BLOCK
• Line Cord/Cable attaches here.
• A ground terminal marked with
the symbol shown is provided
separate from this block for
connecting the ground lead of
the line cord. (See your local
and national electrical codes
for proper grounding methods.)
Volts
Temperatures
44V
55°C
FIGURE A.1
POWER SUPPLY ACCESS HOLE
• Route input power cable through this hole.
• Strain relief required. See your local and
National Electrical codes for proper strain relief.
INPUT FUSE AND SUPPLY WIRE CONSIDERATIONS
Refer to Specification in this Installation Section for recommended
fuse, wire sizes and type of the copper wires. Fuse the input
circuit with the recommended super lag fuse or delay type
breakers (also called "inverse time" or "thermal/magnetic" circuit
breakers). Choose input and grounding wire size according to
local or national electrical codes. Using input wire sizes, fuses or
circuit breakers smaller than recommended may result in
"nuisance" shut-offs from welder inrush currents, even if the
machine is not being used at high currents.
INPUT VOLTAGE SELECTION
Welders are shipped connected for 460 Volt input voltage. To
accomodate different input voltages, move the reconnect lead to
the corresponding voltage (see Figure A.1) Refer to Auxiliary
Reconnect Input Ranges table in the Technical Specification
Section. If the Auxiliary lead (indicated as 'A') is placed in the
wrong position and power is applied to the machine, the machine
will protect itself and display an error message:
• "Err" "713 or 714" will be shown on the display.
• The control board and switch boards will blink out error 713 or
714 on their status leds.
• The weld output will be turned off and the control board will
force itself into an idle state.
• The machine will need to have the misconnect condition
removed before it will recover. Power must be removed prior
to changing reconnect position.
RECONNECT TERMINAL BLOCK
• Reconnects auxiliary
transformer for the
proper input voltage.
REMOVE FOUR SCREWS
AND ACCESS PANEL
A-4
INSTALLATION
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