Routine Inspection - Omron CS1W-MCH71 Operation Manual

Routine Inspection

12-1 Routine Inspection
12-1-1 Inspection Points
Periodic Inspection Items
No. Item
1 I/O Power Measure the voltage variations at
Supply the I/O power supply terminal
block. Do they meet the stan-
dard?
2 Environment Is the ambient temperature within
conditions the acceptable range? (When
used in a panel, the ambient tem-
perature inside the panel must be
checked.)
Is the ambient humidity within the
acceptable range? (When used in
a panel, the ambient humidity
inside the panel must be
checked.)
Is the Unit exposed to direct sun-
light?
Is there any accumulation of dust
(especially iron dust) or salts?
Is the Unit exposed to any spray
of water, oil, or chemicals?
Is the location subject to corrosive
or flammable gases?
Is the location subject to shock or
vibration?
Is the location near any source of
noise?
660
In order for your MC Unit to continue operating at optimum condition, periodic
inspections are necessary.
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.
Inspection points Criteria
DC24V: With a voltage tester, check between
DC21.6 to 26.4V the terminals and make sure that the
power supply falls within the accept-
able range.
0-55 degrees Celsius With a thermometer, check the ambient
temperature inside the panel and make
sure that it falls within the acceptable
range.
10 to 90%RH (with With a hydroscope, check the ambient
no condensation) 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.
It must not be Shield the Unit from direct sunlight.
exposed to direct
sunlight.
There must be none Remove any accumulation of dust
of these present. (especially iron dust) or salts and pro-
tect against them.
It must not be Protect the Unit from water, oil, and
exposed to any of chemicals.
these.
The Unit must not be Check for smells or use a gas sensor.
exposed to these.
The amount of shock Install a cushion or other device to
or vibration must be reduce shock and vibration.
within the accept-
able ranges given in
the specifications.
There must be no Move the noise source away from the
noise. Unit or apply countermeasures.
Section 12-1
Remarks