9.
TROUBLESHOOTING
/MELSEC-A
Output load does not
NO
Check output
state
in monitor
mode with programmer.
1
off
Measure voltage across mod-
*
ule input and COM terminal.
Check input signal in monitor
mode with programmer.
-
B
-
I
Failure
of
output module
Change output unit. and then restore the power.
1
,
Check rush current de-
veloped conditions under
NG
Change output relay number
to set maximum simul-
taneous
ON
current
of
loads
.
to within the specifications.
worse.
I
A
I
OK
I
Check external wiring and
ex-
ternal input equipment.
Consult the
sales
representa-
NOTE
I
W
the
input
signal or
load
is
not
switched
off,
me
Won
9.4.
Y
3
I
3
Y
7
J
1
u
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