Omron CS1W-MCH71 -, Руководство по эксплуатации

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Routine Inspection
Section 12-1
12-1 Routine Inspection
In order for your MC Unit to continue operating at optimum condition, periodic
inspections are necessary.
12-1-1 Inspection Points
The main components of the Unit are semiconductors and have a long ser-
vice life, but depending on the operating environment, there may be more or
less deterioration of these and other parts. A standard inspection schedule is
once every six months to one year. More frequent inspections may be advis-
able depending on the operating environment. Maintain the inspection sched-
ule once it has been set. Checks to be sure that the power supply, ambient
temperature, humidity, and other specifications are within the specifications.
Be sure that these are no loose screws and that all battery and cable connec-
tions are secure. Clean any dust or dirt that has accumulated.
Periodic Inspection Items
No. Item Inspection points Criteria Remarks
1 I/O Power
Supply Measure the voltage variations at
the I/O power supply terminal
block. Do they meet the stan-
dard? DC24V:
DC21.6 to 26.4V With a voltage tester, check between
the terminals and make sure that the
power supply falls within the accept-
able range.
2 Environment
conditions Is the ambient temperature within
the acceptable range? (When
used in a panel, the ambient tem-
perature inside the panel must be
checked.) 0-55 degrees Celsius With a thermometer, check the ambient
temperature inside the panel and make
sure that it falls within the acceptable
range.
Is the ambient humidity within the
acceptable range? (When used in
a panel, the ambient humidity
inside the panel must be
checked.) 10 to 90%RH (with
no condensation) With a hydroscope, check the ambient
humidity inside the panel and make
sure that it falls within the acceptable
range, and check if there is possibility
of condensation due to sudden temper-
ature change.
Is the Unit exposed to direct sun-
light? It must not be
exposed to direct
sunlight. Shield the Unit from direct sunlight.
Is there any accumulation of dust
(especially iron dust) or salts? There must be none
of these present. Remove any accumulation of dust
(especially iron dust) or salts and pro-
tect against them.
Is the Unit exposed to any spray
of water, oil, or chemicals? It must not be
exposed to any of
these. Protect the Unit from water, oil, and
chemicals.
Is the location subject to corrosive
or flammable gases? The Unit must not be
exposed to these. Check for smells or use a gas sensor.
Is the location subject to shock or
vibration? The amount of shock
or vibration must be
within the accept-
able ranges given in
the specifications. Install a cushion or other device to
reduce shock and vibration.
Is the location near any source of
noise? There must be no
noise. Move the noise source away from the
Unit or apply countermeasures.