Lincoln Electric IDEALARC CV-305 - Manual (Page 64)

TROUBLESHOOTING & REPAIR F-32 F-32
IDEALARC® CV-305
5ms 20V
0 Volts
CH1
This is NOT the typical output voltage wave-
form. Note the increased “ripple” in the out-
put waveform. The output capacitors were
disconnected to simulate a faulty capacitor
bank. Note that each vertical division repre-
sents 20 volts and each horizontal division
represents 5 milliseconds in time.
Note: Scope probes connected at machine
high inductance output terminals.
Volts/Div . . . . . . . . . . . . . . . . . .20 V/Div.
Horizontal Sweep . . . . . . . . . .5 ms/Div.
Coupling . . . . . . . . . . . . . . . . . . . . . .DC.
Trigger . . . . . . . . . . . . . . . . . . . .Internal.
SCOPE SETTINGS
MACHINE LOADED TO 300 AMPS AT 15 VDC
ABNORMAL OUTPUT WELD VOLTAGE WAVEFORM - MACHINE LOADED
CAPACITOR BANK NOT FUNCTIONING
Re
tu
rn
to
Se
ct
io
n
T
O
C
Re
tu
rn
to
Se
ct
io
n
T
O
C
Re
tu
rn
to
Se
ct
io
n
T
O
C
Re
tu
rn
to
Se
ct
io
n
T
O
C
Re
tu
rn
to
M
a
st
e
r
T
O
C
Re
tu
rn
to
M
a
st
e
r
T
O
C
Re
tu
rn
to
M
a
st
e
r
T
O
C
Re
tu
rn
to
M
a
st
e
r
T
O
C