Lincoln Electric SVM146-A Benutzerhandbuch
Section E-1
Section E-1
PRO-CUT 80
Theory of Operation
.............................................................................................................
Section E
TABLE OF CONTENTS
-THEORY OF OPERATION SECTION-
INPUT
LINE
SWITCH
INPUT
RECTIFIER
FAN
MOTOR
"A"
L
E
A
D
AUXILIARY
TRANSFORMER
OUTPUT
CONTROL
AIR
PRESSURE
SWITCH
P
R
O
T
E
C
T
T
O
N
I
SIGNAL
CR 1
DRIVE
SIGNAL
RELAY
IGBT
GATE
SIGNALS
R
E
A
E
A
D
Y
Y
A
I
R
L
O
W
T
H
E
R
M
M
A
L
S
A
F
E
E
Y
T
TRIGGER & SAFETY
ELECTRODE & TRANSFER
CURRENT FEEDBACK
PILOT ENABLE
ELECTRODE SOLENOID ENABLE
AIR SOLENOID ENABLE
AIR
SOLENOID
TRIGGER & SAFETY
E
L
E
E
C
T
R
R
O
D
E
E
S
O
L
E
N
O
I
D
TORCH
CONNECTOR
ELECTRODE
NOZZLE
WORK
R
E
C
O
N
N
E
C
T
S
W
T
C
H
I
POWER BOARD
CR 1
RELAY
IGBT
IGBT
IGBT
IGBT
CAPACITOR
CAPACITOR
CURRENT
TRANSFORMER
CONTROL BOARD
DISPLAY BOARD
18/36VAC
12VAC
24VAC
MAIN
TRANSFORMER
OUTPUT
BOARD
CHOKE
PILOT
TRANSISTOR
THERMOSTATS
115VAC
REMOTE
INTERFACE
RECEPTACLE
&2
& 2
FIGURE E.1 – PRO-CUT 80 BLOCK LOGIC DIAGRAM