Mitsubishi Q170MCPU, User Manual

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6 - 5
6 INSPECTION AND MAINTENANCE
6.3 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 implement this inspection.
Table 6.2 Periodic Inspection
Item Inspection item Inspection Criterion Action
Ambient temperature 0 to 55 °C (32 to 131 °F)
Ambient humidity 5 to 95 % RH
1
A
m
bi
ent
env
ironm
ent
Atmosphere
Measure with a thermometer and a
hygrometer.
Measure corrosive gas.
No corrosive gases
When the controller is used in
the board, the ambient
temperature in the board
becomes the ambient
temperature.
2 Power voltage
Measure a voltage across the
terminals of 24VDC.
21.6 to 26.4 Change the power supply.
Looseness, rattling
Move the module to check for
looseness and rattling. The module must be installed
solidly.
Retighten the screws.
If the Motion controller, Motion,
or I/O, module is loose, fix it with
screws.
3
In
sta
lla
tio
n
Adhesion of dirt and
foreign matter
Check visually.
Dirt and foreign matter must not
be present.
Remove and clean.
Looseness of terminal
screws Try to further tighten screws with a
screwdriver.
Screws must not be loose. Retighten the terminal screws.
Proximity of solderless
terminals to each other
Check visually.
Solderless terminals must be
positioned at proper intervals.
Correct.
4
Connec
tion
Looseness of
connectors
Check visually. Connectors must not be loose.
Retighten the connector fixing
screws.
Check the 7-segment LED at the
front side of Motion controller. Must be turned OFF "BT1" or
"BT2" display.
Check the length of term after
purchasing the battery Must not be used more than 5
years.
Even if the lowering of a battery
capacity is not shown, replace
the battery with a new one if a
service life time of the battery is
exceeded.
5 Battery
Check that SM51 or SM58 is
turned OFF using MT Developer2
in monitor.
Must be turned OFF.
Replace the battery with a new
one when SM51 or SM58 is ON.