Periodical Inspection - Mitsubishi Electric Q12DCCPU-V User Manual

6
PREPARATORY PROCEDURES AND SETTING
6.12.2

Periodical inspection

This section explains the items to be inspected once or twice every six months or every
year.
Note that these inspections are required when the system is moved or modified including
re-wiring.
No. Item
Ambient environment
Ambient temperature
1
Ambient humidity
Ambience
2 Power voltage
Installation
3
Looseness, rattling
Dirt, foreign matter
Connection
Looseness of terminal screws
4
Distance between solderless
terminals.
Looseness of connectors.
5 Battery
Table 6.27 Periodic inspection
Inspection
Measure with a thermometer
and a hygrometer.
Measure corrosive gas.
Measure a voltage across the
terminals of 100/200V AC and
24V DC.
Move the module to check for
looseness and rattling.
Visual check.
Further tighten with a
screwdriver.
Visual check.
Visual check.
Check the "Battery error" is off
in the <<Module
information>> tab.
* 1 10 to 90%RH when an AnS series module is used in a multiple CPU system.
Q12DCCPU-V
Criterion
0 to 55
*1
5 to 95%RH
No corrosive gas
85 to 132V AC
170 to 264V AC
15.6 to 31.2V DC
The module is securely
installed.
No dirt or foreign matter.
No looseness.
Proper clearance between
solderless terminals.
No looseness.
(Preventive maintenance)
6.12 Maintenance and Inspection
6.12.2 Periodical inspection
Q06CCPU-V Q06CCPU-V-B
Action
When the module is in the
panel, the temperature in the
panel is the ambient
temperature.
Change the power supply.
Retighten the screws.
For the C Controller module, I/
O modules, or power supply
module, secure the module
with screws.
Remove and clean it.
Retighten the terminal screws.
Provide proper clearance
between solderless terminals.
Retighten the connector fixing
screws.
Replace the battery if the
service life has expired
regardless of the indication.
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