Lincoln Electric POWER WAVE C300 Service Manual page 11

E-2
POWER WAVE C300 BLOCK DIAGRAM
MAIN
INPUT
SWITCH
RECTIFIER
IN IN P P UT UT P P O O W W E E R R
FI FIR R S S T T & & S S E E C C O O N N D D
S S TA TAG G E E
S S I I G G N N AL ALS S
P P O O W W E E R R
O O N N L L E E D D
PFC CONTROL
BOARD
P P R R E E C C H H A A R R G G E E
R R E E LA LAY Y
C C O O NT NTR R O O L L
GENERAL DESCRIPTION
The POWER WAVE® C300 is a Wire Feeder/Welder
featuring an inverter type power source with Tribrid
Converter Technology, Automatic PowerConnect
Technology and an Integrated Wire Drive System. The
POWER WAVE® C300 machine is a high performance
multi-process machine with GMAW, FCAW, MMA, DC
TIG and pulse capability. The PW C 300 is capable of
regulating the current, voltage and power of the weld-
ing arc. It offers premier welding performance solu-
tions for specific areas such as aluminum, stainless
and nickel especially where machine size and weight
are considerations.
The POWER WAVE® C300 is capable of producing a
welding output from 5 to 300 amperes and also capa-
ble of producing 515 ampere pulses. It will operate on
single and or three phase input power from 208VAC to
575VAC. It is environmentally hardened to an IP23 rat-
ing for operating in difficult environments. It also will
accept standard Mig guns, Spool guns and Push-pull
guns.
THEORY OF OPERATION
FIGURE E.2 - GENERAL DESCRIPTION
INPUT
CHOKE
INPUT
FULL WAVE FULL WAVE
RELAY
DC LINK
F F I I R R S S T T S S T T A A G G E E
B B U U C C K K - - B B O O O O S S T T
CAPACITOR
100 Ohm
CR
4 4 8 8 V V D DC C
FA FAN N
FAN FAN
CONTROL CONTROL
4 4 8 8 V V D DC C
FA FAN N
I I G G BT BT
D D RI RIV V E E S S SOLENOID
48 VDC 48 VDC
THE E R R M M AL AL L LE E D D TH
P P U U S S H H - - P P U U L L L L
USER INTERFACE
BOARD
B B UZZ UZZ E E R R
A A R R C-LI C-LIN N K K C C O O M M M M U U NI NIC C AT ATI I O O N N
C C O O M M M M U U NI NIC C AT ATI I O O N N
NOTE: Unshaded areas of Block Logic
Diagram are the subject of discussion
POWER WAVE® C300
SWITCH BOARD
( ( S S E E C C O O N N D D S S T T A A G G E E ) )
H H I I G G H H F FR R E E Q Q U U E E N N C C Y Y I IN N V V E E R R T T E E R R W W IT ITH H
P P L L A A N N E E R R
O O U U T T P P U U T T
T T R R A A N N S S F F O O R R M M E E R R
R R E E C C TIFI TIFIE E R R
100V 100V
C C A A P P A A C C I I T T O O R R S S
60KHz 60KHz
IGBT IGBT
400V 400V
BRIDGE BRIDGE
CURRENT CURRENT
TRANSDUCER TRANSDUCER
CHOPPER
CONTROL
BOARD
4 4 8 8 V V D DC C
FOOT
GAS PURGE /
AMPTROL
COLD INCH
MOTOR /
GEAR BOX
S S P P O O O O L L / /
FEEDHEAD
GUN
BOARD
G G U U N N
TRIGGER
A A R R C-LI C-LIN N K K C C O O M M M M U U NI NI C C AT ATI I O O N N
S S TAT TATU U S S
E E R R R R O O R R
LI LIG G HT HT
O O U U T T P P U U T T
P P O O S S ITI ITIV V E E
T T E E R R M M I I N N A A L L
(T (TH H I I R R D D S S T T A A G G E E ) )
M M U U LTI- LTI-P P H H A A S S E E B B U U C C K K
C C O O N N V V E E R R T T E E R R
C C U U R R R R E E N N T T N N E E G G A A TI TIV V E E
T T R R A A N N S S D D U U C C E E R R
T T E E R R M M I I N N A A L L
120KHz 120KHz
CURRENT CURRENT VOLTAGE VOLTAGE
FEEDBACK FEEDBACK
FEEDBACK FEEDBACK
C C H H O O P P P P E E R R
C C O O M M M M U U NI NIC C AT ATI I O O N N
FAN CONTROL FAN CONTROL
TO SWITCH TO SWITCH
BOARD BOARD
TH THE E R R M M O O S S TAT
CONTROL
BOARD
E E TH THE E R R N N E E T T
S S TAT TATU U S S
S S TAT TAT U U S S
LI LIG G HT HT " " E E R R R R O O R R " "
LI LIG G HT HT
E-2
TATS S