Output Rectifier And Choke - Lincoln Electric INVERTEC V350-PRO Service Manual

E-5
Input
Input switch
Rectifier
Auxiliary
Transformer
115VAC, 42VAC
24VAC
28VAC
14 Pin
Amphenol
6 Pin
Amphenol

OUTPUT RECTIFIER AND CHOKE

The output rectifier receives the AC output from the
main transformer secondary and rectifies it to a DC
voltage level. Since the output choke is in series with
the negative leg of the output rectifier and also in
series with the welding load, a filtered DC output is
applied to the machine's output terminals.
NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion.
THEORY OF OPERATION
FIGURE E.5 – OUTPUT RECTIFIER AND CHOKE
Main Switch Board
Reconnect
Switch
Fan
115VAC Fan Supply
V/F Capacitor Feedback (2)
Machine Control Supply
+15VDC, -15VDC, +5VDC
Power
SPI Supply +15VDC +5VDC
Board
40VDC
RS232 Supply +5VDC
Remote Control & Trigger
Output
Control
Output
Potentiometer
Primary
Current
Sensor
Primary
Current
Sensor
Primary Current Feedback
Input Relay Control
Soft Start Control
Control Board
SPI Communications & +15VDC, +5VDC Supply
Mode
Remote
Panel
Board
(Not used if APP
is in place)
Weld
Optional Solenoid
Terminals
V350-PRO
To Control
Board
Positive
Output
Terminal
Choke
Negative
Output
Terminal
RS232
Advanced
Display
Process
Panel
Panel
E-5