Maintenance And Inspection - Omron V670-H11 User Manual

8-4 Maintenance and Inspection

To maintain V670 Series in the best condition, you need to inspect it daily or periodically. V670 Series mainly consists of semiconduc-
tor components which have a long life. However, the following malfunctions are expected depending on the service environment or
operating condition.
(1) Deterioration of element due to over-voltage or over-current.
(2) Deterioration of element due to long-term stress arisen from use in a high-temperature site.
(3) Deterioration of insulation or imperfect contact of connector due to unsuitable humidity or dust.
(4) Imperfect contact of connector or corrosion of element due to corrosive gas.
♦ Inspection item
No. Inspection Item
1 Fluctuation of power sup-
ply voltage
2 Ambient environment
(a) Temperature
(b) Humidity
(c) Vibration or impact
(d) Dust
(e) Corrosive gas
3 Panel conditions
(a) Whether the panel is
ventilated.
(b) Whether packing mate-
rial of sealed structure
is deteriorated.
4 Power supply for I/O
(a) Voltage fluctuation
(b) Ripple
5 Mounting state
6 Error logging
8-4
Inspection
(1) Check at a terminal block of
power supply whether the
criterion is satisfied.
(2) Check whether instanta-
neous power failure occurs
frequently and whether volt-
age fluctuates considerably.
(a) Within the specifications.
(b) Within the specifications.
(c) Influence of vibration or
impact of machines.
(d) Adherence or sedimenta-
tion of dust or foreign mat-
ter.
(e) Discoloration or corrosion in
a metal part.
(a) Check whether natural ven-
tilation, forced ventilation
and cooling are performed.
(b) Check whether packing
material in the panel is
removed or damaged.
Check at a terminal block of
every I/O section whether crite-
rion is satisfied.
(1) Whether every device is
fixed tightly.
(2) Whether every connector is
inserted completely.
(3) Whether terminal block screws
are tightened completely.
(4) Whether wire is not dam-
aged.
(5) Whether condition between
a tag and antenna is within
the specifications.
(6) Whether grounding com-
plies with the Class D (con-
ventional Class III).
Check the details of error.
Criterion
Within the specifications
for power supply voltage.
Within a allowable voltage
fluctuation range.
(a) Within the specifications.
(b) Within the specifications.
(c) Within the specifications.
(d) Neither dust nor foreign
material is acceptable.
(e) Neither discoloration nor
corrosion is acceptable.
(a) Ventilation must be
made properly.
Temperature must be
within -10 to +55°C.
(b) Any damage is unac-
ceptable.
Within the specifications.
Every device must be fixed
tightly.
Every connector must be locked
properly and fixed by screws.
The terminal block screws
must be tightened completely.
The wire must not be dam-
aged.
The condition must be
within the specifications.
Remarks
Tester.
Power supply
analyzer.
Lowest tempera-
ture thermometer.
Hygrometer.
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Tester.
Oscilloscope.
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