Daily Inspection - Mitsubishi Electric MELCEC Q Series User Manual

10. MAINTENANCE AND INSPECTION

10.1 Daily Inspection

Dairy inspection items recommended are shown in Table 10.1.
Item
1
2
3
4
Check item
Installation condition of the
base unit
Installation condition of the
I/O modules
Connection condition
POWER LED
MODE LED
RUN LED
ERR. LED
Input LED
Output LED
Table 10.1 Dairy inspection
Content of inspection
Confirm if installation
screws are not loose or It is installed securely. Retighten the screw.
cover is not detached.
Confirm if the module
The mounting screws
mounting screw is firmly
are firmly tightened.
tightened.
Loosening of terminal
No loosening.
screw
Proximity of solderless There is an
terminals. appropriate distance.
Connector areas of No loosening at
extension cable connectors.
The LED is on.
Confirm it is on.
(Faulty if it is off.)
The LED is on.
Confirm it is on.
(Faulty if it is off.)
The LED is on.
Confirm it is on in the
(Faulty if it is off or
"RUN" state.
flickering.)
This LED is off.
Confirm it is on when an
(On when an error
error occurs.
occurs.)
The LED is on when
input is on, and off
Confirm if it correctly
when input is off.
turns on and off.
(Faulty other than the
above.)
The LED is on when
output is on, and off
Confirm if it correctly
when output is off.
turns on and off.
(Faulty other than the
above.)
10 - 2
Judgement Action
Firmly tighten the
module mounting
screw.
Retighten the terminal
screw.
Correct the distance.
Retighten the
connector fixing
screw.
Refer to Section
11.2.2.
Refer to Section
11.2.3.
Refer to Section
11.2.4
Section 11.2.5.
Refer to Section
11.2.6
Section 11.2.7.
Refer to Section
11.4.1.
Refer to Section
11.4.2.