Digital Control Board Test Points - Lincoln Electric POWER WAVE S500 Service Manual

F-45
CURRENT TRANSDUCER TEST (continued)
FIGURE F.16 – DIGITAL CONTROL BOARD TEST POINTS
D1 D3
J5
D4 D6
D2 D5
X13
O
N
S3
X83 X82
X81
BT1
R12
X46
R15
X53 R24
DZ31 DZ32
O
N
S2 OCI5
J11
For the following steps refer to the information
in the Diagnostic
Powerwavemanager.com.
8. Using a Ethernet Cross Connect cable, connect
a laptop computer to the Power Wave
the Ethernet port located at the top rear of the
machine.
9. Connect a resistive load bank (or 50 Ft. weld
cable) to the positive and negative output termi-
nals on the Power Wave
10. Using the Diagnostic Utility Software:
Establish communications with the Power
Wave ® S500.
Select the "Calibrate" tab.
Select the "50 amp" current set point.
Select "Turn Output On".
Use an external calibrated ammeter that is not
affected by inverter noise to read the actual
current.
TROUBLESHOOTING AND REPAIR
J6
D8
Q1
X4
X99
Q24
Q11
Q25
X18
O
N
S1
Q10
X33
X29 X28
Y1
Y2
X48
L7
X49
C255
Y3
X62
Q18
X1
OCI7 OCI8
OCI10 OCI9
Q19
X59
D38 D39 D40
OCI6
C15
X64
X68
D35
X67
J13 J2 J4
X57
Utility found
® S500 via
S500 machine.
®
POWER WAVE
PIN 1 PIN 4
J8
J8
PIN 5 PIN 8
Q3 Q6
J7
X100
X94 X96 X95 X97
X5
X93 X98
X75
X19
X20
X41
Q16 X34
X92
R510 X35
R6
X50
D54
R21
X51
LED9
C9 C10
Q20
C11 C12
D30
T2
C13
D41
C19
D42
C20
C18
X70
OCI12
11. Check the current transducersʼ feedback volt-
at ages. See Table F.15.
12. Repeat the test at several other current levels.
If the transducersʼ feedback voltagesʼ are cor-
rect for the actual current, the transducers are
functioning properly. If there is no feedback
check the connections between the current
transducers and the PC boards.
Wiring Diagram.
CAUTION
If using a weld cable across the output termi-
nals instead of a resistive load bank, do not
exceed the current rating of the cable.
-------------------------------------------------------------------
® S500
J8 J9
D19
D22
X26
D17
X11
D16
X9 X10
X24
C6
C8
X22
Q14
Q31 X38
X21
X25 X36 X85 X12
L14
FTP1
FTP3
CT1
X63
L11 L12
C14
Q22 Q23
C22
X72 X73 X74
C21
C292
See the
F-45