Inspection; Routine Inspections - Omron CS1W-213 - REV 02-2008 Operation Manual

Inspection

12-1 Inspection

12-2 Routine Inspections

Inspection Points
No. Item
1 I/O Power Sup-
ply
2 Environment
conditions
338
In order to use the functionality of the Position Control Unit (PCU) to its
utmost, daily or routine inspection is recommended.
In order for your PCU to continue operating at optimum condition, periodic
inspections are necessary. The main components of the PCU are semicon-
ductors and have a long service life, but depending on the operating environ-
ment, 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 fre-
quent inspections may be advisable depending on the operating environment.
Maintain the inspection schedule once it has been set.
Inspection points
Measure the voltage variations at the I/
O power supply terminal block. Do they
meet the standards?
Is the ambient temperature within the
acceptable range? (When used in a
panel, the ambient temperature 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 PCU exposed to direct sunlight?
Is there any accumulation of dust (espe-
cially iron dust) or salts?
Is the PCU 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 vibra-
tion?
Is the location near any source of
noise?
Criteria
24 VDC: 20.4 to
26.4 VDC
5 VDC: 4.75 to 5.25 VDC
0 to 55°C
10% to 90% RH (with no
condensation)
It must not be exposed to
direct sunlight.
There must be none of
these present.
It must not be exposed to
any of these.
The PCU must not be
exposed to these.
The amount of shock or
vibration must be within
the acceptable ranges
given in the specifica-
tions.
There must be no noise.
Section 12-1
Remarks
With a voltage tester,
check between the termi-
nals and make sure that
the power supply falls
within the acceptable
range.
With a thermometer,
check the ambient tem-
perature inside the panel
and make sure that it falls
within the acceptable
range.
With a hydroscope,
check the ambient
humidity inside the panel
and make sure that it falls
within the acceptable
range. In particular,
check that there is no
condensation due to sud-
den changes in tempera-
ture.
Shield the PCU from
direct sunlight.
Remove any accumula-
tion of dust (especially
iron dust) or salts and
protect against them.
Protect the PCU from
water, oil, and chemicals.
Check for smells or use a
gas sensor.
Install a cushion or other
device to reduce shock
and vibration.
Remove the PCU from
the noise source or apply
countermeasures.