Omron CV500 Installation Manual page 103

Troubleshooting Flowcharts
Start
Indicator of
NO
000500 normal?
YES
Check terminal Correct wiring
voltage of 000500
with tester
ABNORMAL
Decision
NORMAL
Check terminal
voltage of 000500
with tester
NORMAL
Check output de-
vice SOL1
Indicators of
NO
inputs (000002,
000003) normal?
YES
Check terminal
voltages of 000002
and 000003 with
tester
ABNORMAL
Decision
Remove external
NORMAL
wiring and mount
Dummy Input Unit
to check
ABNORMAL
Check input de-
Replace Input
Unit vices LS1 and LS2
90
Replace terminal
block connector
NO
Output
terminal block
wiring correct?
connector con-
YES
ABNORMAL
Decision
Check terminal
voltages of 000002
and 000003 with
tester
Decision
wiring correct?
YES
Correctly wire
Decision
NORMAL
Return to
START
Replace fuse
YES
Faulty
Is the
NO
blown fuse indi-
cator lit?
tact?
(Only
unit with
fuse)
(Unit with-
out fuse)
Replace Output
Unit
NORMAL
ABNORMAL
Input
NO
Tighten
Section 5-2
Monitor ON/OFF
status of 000500
with peripheral
device
YES
NO
Decision
NORMAL
YES
Terminal
screws loose?
NO
Faulty
terminal block
connector con-
tact?
YES
Replace terminal
block connector
Replace Input
Unit
ABNORMAL
NO