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Maintenance and Inspection
Section 6-4
6-6
n
Inspection Items
Item
Detail
Criteria
Remarks
(1)
Check that the supply voltage
fluctuation at the power supply
terminal block is within the
permissible range.
Supply voltage rating
Voltage
tester
Supply voltage fluctuation
(2)
Check that there is no frequent
instantaneous power failures
or radical voltage drops.
Within permissible voltage fluctuation
range
Power supply
analyzer
Environment
(1) Ambient temperature
(2) Ambient humidity
(3) Vibration and shock
(4) Dust
(5) Corrosive gas
(1) and (2) Check that the
ambient temperature
and humidity are
within the specified
ranges.
(3) Check that no vibration or
shock is transmitted from any
machines.
(4) Check that the system is free
of dust accumulation.
(5) Check that no metal part of the
system is discolored or
corroded.
(1), (2) and (3)
Check that the ambient temperature
and humidity are within the specified
ranges.
(4) Check there is no dust.
(5) Check there is no corrosive gas.
Maximum
and minimum
thermometer
Hygrometer
Panel condition
(1) Ventilation
(2) Packing for any
enclosed construction
(1) Check that the system is
ventilated properly with natural
ventilation, forced ventilation,
or cooling air.
(2) Check that the packing is
properly attached with no
damage.
(1) The interior temperature must be
within a range between -10°C
and 55°C with proper ventilation.
(2) The packing has no damage.
–––
I/O power supply
(1) Voltage fluctuation
(2) Ripple
Check on the I/O terminal block
that the voltage fluctuation and
ripple are within the permissible
ranges.
The voltage fluctuation and ripple
must be within the permissible
ranges.
Voltage
tester
Oscilloscope
Check that each device is securely
mounted.
There must be no loose screws.
–––
Check that each connector is
securely connected.
Each connector is locked or securely
tightened with screws
–––
Check that no screw of the terminal
block is loosened.
There must be no loose screws.
–––
Check that no wire is broken or
nearly broken.
There must be no wire that is broken
or nearly broken.
–––
Check that the distance between
the Tag and Antenna is within the
specified range.
The distance between the Tag and
Antenna must be within the specified
range.
–––
Mounting condition
Check that the GR terminal is
grounded.
The terminal must be grounded to a
resistance of 100
W
or less.
–––
Содержание V720 Series
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