Daily Inspection - Mitsubishi MELSEC-Q Series User Manual

5
SETTINGS AND PROCEDURES BEFORE OPERATION

5.12.1 Daily inspection

The following indicates the items to be inspected daily.
Item Inspection Item
1 Installation of base unit
2 Installation of I/O module
3 Connecting conditions
Power supply
module
POWER LED
C Controller module
MODE LED
C Controller module
ERR. LED
4
Input module
Input LED
Output module
Output LED
Table5.14 Daily inspection
Inspection
Check that fixing screws are
not loose and the cover is not
dislocated.
Check that the module is not
dislocated and the unit fixing
hook is engaged securely.
Check for loose terminal
screws.
Check for distance between
solderless terminals.
Check the connector part of
the cable.
Check that the LED is ON.
Make sure that this LED is lit
green in a RUN status.
Check that the LED is OFF.
Check that the LED turns ON
and OFF.
Check that the LED turns ON
and OFF.
* 1 When the MODE LED is flashing, it means that the shutdown of the C Controller module is
completed. (It does not indicate an error.)
Judgment Criteria
The screws and cover must
Retighten the screws.
be installed securely
The module fixing hook must
Securely engage the module
be engaged and installed
fixing hook.
securely.
Retighten the terminal
Screws should not be loose.
screws.
The proper clearance should
be provided between Correct.
solderless terminals.
Connections should no be Retighten the connector fixing
loose. screws.
The LED must be ON (green).
(Abnormal when the LED is
OFF.)
Lit green.*1
(OFF indicates error.)
OFF.
(ON or flashing indicates
error.)
The LED must be ON when
the input power is turned ON.
The LED must goes out when
the input power is turned OFF.
(Abnormal if the LED does not
behave as indicated above.)
The LED turns ON when the
output power is turned ON.
The LED must goes out when
the output power is turned
OFF.
(Abnormal if the LED does not
behave as indicated above.)
5.12 Maintenance and Inspection
5.12.1 Daily inspection
1
2
Remedy
3
4
Section 18.2.1
Section 18.2.2
Section 18.2.3
5
CPU module manual
6
Section 18.2.11
7
8
5
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