Справочник Пользователя для Mitsubishi Electronics QSPCU
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11.2 Periodic Inspection
11
MAINTENANCE AND INSPECTION
11.2 Periodic Inspection
The items that must be inspected one or two times every 6 months to 1 year are listed
below.
When the equipment is moved or modified, or layout of the wiring is changed, also perform
this inspection.
below.
When the equipment is moved or modified, or layout of the wiring is changed, also perform
this inspection.
Table11.2 Periodic Inspection
Item
Inspection Item
Inspection
Judgment Criteria
Remedy
1
A
m
b
ien
t en
vi
ro
nm
en
t
Ambient temperature
Measure with a
thermometer and a
hygrometer.
thermometer and a
hygrometer.
0 to 55
When the sequencer is
used in the board, the
ambient temperature in the
board becomes the
ambient temperature.
used in the board, the
ambient temperature in the
board becomes the
ambient temperature.
Ambient humidity
5 to 95 %RH
Atmosphere
Measure corrosive gas.
Corrosive gas must not be
present.
present.
2
Power voltage
Measure a voltage across
the terminals of 100/
200VAC.
the terminals of 100/
200VAC.
85 to 132VAC
Change the power supply.
170 to 264VAC
3
In
st
all
atio
n
Looseness and rattling
of module fixing screws
of module fixing screws
Try to further tighten screws
with a screwdriver.
with a screwdriver.
The module must be
installed fixedly.
installed fixedly.
Retighten the screws.
If the CPU, or power
supply module is loose, fix
it with screws.
If the CPU, or power
supply module is loose, fix
it with screws.
Adhesion of dirt and
foreign matter
foreign matter
Check visually.
Dirt and foreign matter must
not be present.
not be present.
Remove and clean.
4
C
on
nec
tio
n
Looseness of terminal
screws
screws
Try to further tighten screws
with a screwdriver.
with a screwdriver.
Screws must not be loose.
Retighten the terminal
screws.
screws.
Proximity of solderless
terminals to each other
terminals to each other
Check visually.
Solderless terminals must
be positioned at proper
intervals.
be positioned at proper
intervals.
Correct.
Looseness of
connectors
connectors
Check visually.
Connectors must not be
loose.
loose.
Retighten the connector
fixing screws.
fixing screws.
5
Battery
Check "BAT." LED on the
front face of the CPU
module.
front face of the CPU
module.
The LED must be Off.
If the LED is On, replace
the battery.
the battery.
Check the period after the
purchase of the battery.
purchase of the battery.
The period must be five
years or less.
years or less.
If the battery is used for
more than 5 years, replace
the battery.
more than 5 years, replace
the battery.
Check in the monitoring
mode of GX Developer that
SM51 or SM52 is turned
OFF.
mode of GX Developer that
SM51 or SM52 is turned
OFF.
SM51 or SM52 must be
OFF.
OFF.
If SM51 or SM52 is ON,
replace the battery.
replace the battery.
6
Number of writes to
standard ROM
standard ROM
Check the values of SD232
and SD233 in the monitoring
mode of GX Developer.
and SD233 in the monitoring
mode of GX Developer.
The number of writes to the
standard ROM must be
100,000 times or less.
standard ROM must be
100,000 times or less.
If the number of writes to
the standard ROM
exceeds 100,000 times,
replace the CPU module.
the standard ROM
exceeds 100,000 times,
replace the CPU module.
7
Clock
Check the current time at
the clock setting of GX
Developer.
the clock setting of GX
Developer.
There is no time lag
between the time checked
at the time setting of GX
Developer and the actual
time.
between the time checked
at the time setting of GX
Developer and the actual
time.
Change the time at the
time setting of GX
Developer.
time setting of GX
Developer.