Inspection; Inspection Points - Omron CJ1W-MA - REV 10-2008 Operation Manual

Inspection

13-1 Inspection

13-2 Inspection Points

Routine Inspection Points
No. Inspection
point
1 I/O Power Sup- Measure the voltage varia-
ply tions at the I/O power supply
terminal block. Do they meet
the standards?
2 Environment Is the ambient temperature
conditions within the acceptable range?
(When used in a panel, the
ambient temperature of the
PCU inside the panel must be
checked.)
Is the ambient humidity
(humidity within panel) within
the acceptable range? (When
used in a panel, the ambient
humidity of the PCU inside the
panel must be checked.)
Is the PCU exposed to direct
sunlight?
Is there any accumulation of
dust (including iron dust) or
salts?
Is the PCU exposed to any
sprays of water, oil, or chemi-
cals?
Is the PCU installed in a loca-
tion subject to corrosive or
flammable gases?
Is the PCU installed in a loca-
tion subject to shock or vibra-
tion?
Is the PCU installed in a loca-
tion near any source of noise?
3 Installation and Is the PCU securely
wiring mounted?
Are the cable connectors
properly inserted and locked?
Are any external cables dis-
connected?
486
Perform daily or periodic inspections to make sure that the PCU continues
operating in its optimum condition.
The main components of the PCU are semiconductors, which have a long
service life. These components may deteriorate faster, however, due to factors
such as the operating environment. Therefore, routine inspection is required.
The standard inspection schedule is once every six months to one year. More
frequent inspections may be advisable depending on the operating environ-
ment.
Maintain the inspection schedule once it has been set.
Details
24 V DC:
21.6 to 26.4 V DC
0 to 55°C
10% to 90% (with no con-
densation)
The PCU must not be
exposed to direct sun-
light.
There must be none of
these present.
The PCU must not be
exposed to any of these.
The PCU must not be
exposed to any of these.
The amount of shock or
vibration must be within
the acceptable ranges
given in the specifica-
tions.
There must be no noise.
The mounting must not
be loose.
The mounting must not
be loose.
There must be no exter-
nal abnormalities.
Criteria
Using a voltage tester, check between
the terminals adjusting to make sure
that the power supply is within the
acceptable range.
Using a thermometer, check the ambi-
ent temperature inside the panel and
make sure that it is within the accept-
able range.
Using a hygrometer, check the ambient
humidity inside the panel and make
sure that it is within the acceptable
range. In particular, check that there is
no condensation due to sudden
changes in temperature.
Shield the PCU from direct sunlight.
Remove any accumulation of dust
(including iron dust) or salts and protect
the PCU against them.
Protect the PCU against water, oil, and
chemicals.
Check for odors by smelling or using a
gas sensor.
Install a cushion or other device to
reduce shock and vibration.
Remove the PCU from the noise
source or take countermeasures to
protect the PCU from noise.
Lock the sliders securely.
Insert and lock all cable connectors
properly.
Do a visual check and connect or
replace cables as required.
Section 13-1
Remarks