Daily Inspection - Mitsubishi Electric QS001CPU User Manual

11
MAINTENANCE AND INSPECTION

11.1 Daily Inspection

The items that must be inspected daily are listed in Table11.1.
Item Inspection Item
1 Installation of base unit
Installation of power supply
2
module and CPU module
3 Connecting conditions
Power supply module
"POWER" LED
CPU module "ALIVE"
LED
CPU module "RUN"
4 LED
CPU module "ERR."
LED
CPU module "TEST"
LED
CPU module "BAT."
LED
*1: Normal operation indicates the following conditions.
• Safety CPU operation mode is in the SAFETY MODE.
• The CPU operation status is in the RUN status.
Table11.1 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 that the module fixing
screws are securely
tightened.
Check for loose terminal
screws.
Check for distance between
solderless terminals.
Check that the LED is On
(green).
Check that the LED is On
(green).
Check that the LED is On
(green).
Check that the LED is Off.
Check that the LED is Off.
Check that the LED is Off.
Judgment Criteria
The screws and cover must
be installed securely
The module fixing hook
must be engaged and
installed securely.
The module fixing screws
must be securely tightened.
Screws should not be loose.
The proper clearance
should be provided between
Solderless terminals.
The LED must be On
(green).
(Abnormal if the LED is Off.)
The LED must be On
(green).
(Abnormal if the LED is Off.)
The LED must be On
(green).
(Abnormal if the LED is Off.)
The LED must be Off.
(Abnormal if the LED is On
or flashing.)
The LED must be Off.
(Abnormal if the LED is On.)
The LED must be Off.
(Abnormal if the LED is On.)
11.1 Daily Inspection
Remedy
Retighten the screws.
Securely engaged the unit
fixing hook.
Securely tighten the
module fixing screws.
Retighten the terminal
screws.
Correct.
Since the status other
than indicated on the
left is in the status other
*1
than normal operation ,
perform the
troubleshooting
referring to Section
12.2.
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