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THEORY OF OPERATION
EE-5 EE-5
V160-S & -T
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NOTE: Unshaded areas of Block Logic
Diagram are the subject of discussion
DISPLAY BOARD
The display board receives status and analog signals
from the inverter board and various sensors. It is com-
posed of 2 parts:
- Weld controller: Interprets signals, makes decisions
and changes the machine mode and output to satis-
fy the requirements as dictated by the operator.
- Display board: Supports all the potentiometer,
switches and LED
- Meter board: Displays the pre-set and actual output
current
FIGURE EE.5 – DISPLAY BOARD
I
NVERTER BOARD
W
05X0190
(SCHEMATIC X0190)
GND
DC-
DC+
W1
W2
INPUT BOARD
W05X0250
(SCHEMATIC X0203)
Y/G
BLACK
RED
W1DC-DC-
+
-
J
P1
JP1
JP2
GND
AC2
A
C1
BROWN
BLUE
BLACK
WHITE
S1
1
3
4
2
DC+
DC-A
115/230/1/50/60
Vac
GREEN
FAN
J1
WELD CONTROLLER
W05X0233
(SCHEMATIC X0233)
D
ISPLAY BOARD
W05X0245
(SCHEMATIC X0245)
JP1
C
W
REMOTE
CONNECTOR
WARNING HIGH VOLTAGE CAN KILL
• Do not operate with coers removed.
•
Disconnect input power by unplugging
power cord before servicing.
• Do not touch electrically live parts.
• Only qualified persons should install,
use or service this machine
1
2
3
6
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10
26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
1 2 3 4 5 6 7 8
D E C B A
METER BOARD
W05X0207
(SCHEMATIC X0207)