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Maintenance And Inspection; Daily Inspection - Mitsubishi Electric MELSEC-A Series User Manual

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8. MAINTENANCE AND INSPECTION
- - - - - - - - - - - - - - - - - - - MELSEC·A
8
MAINTENANCE AND INSPECTION
This section describes items for daily and periodic maintenance and inspec-
I
tion in order to maintain the programmable controller in the normal and best
conditions.
8.1
Dally Inspection
Table 8.1 shown the inspection items which are to be checked daily.
Table 8.1 Dally Inspection
Number
Check Item
Check Point
Judgement
Corrective Action
Check for loose terminal
Screws should not be
Retighten
screws.
loose.
termfnet ecrewe.
Proper clearance
Connecting
Check distance between
should be provided
Correct.
1
conditions
solderless terminals,
between soJderless
terminals.
Check connectors of
Connections should not
Retighten
extension cable.
be loose.
connector
mounting screws.
POWER
Check thetthe LED is
On.
(Off
indicates an
See Section 9.2.2.
LED
on.
error.)
RUN LED
Check thetthe LED is
On. (Off orflicker
See Section
on during run.
indicates an error.)
9.2.3. and 9.2.4.
CPU
ERROR
Check that the LED is
Off. (On when an error
module
on when an error has
See Section 9.2.6.
2
indicator
LED
occurred.
has occurred.)
lamps
Check that the LED
Flickers while data is
SO LED
flickers while data is
transmitted. Off in
See Seclion 9.2.7.
transmitted.
other cases.
Check that the LED
Flickers while data is
RD LED
flickers while data is
transmitted. Off in
See Section 9.2.7 .
received.
other cases.
8-1

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