Chapter 9 Maintenance And Inspection; Daily Inspection - Mitsubishi Electric MELSEC Q Series User Manual

CHAPTER 9
This chapter explains items you should perform routinely or at regular intervals to ensure normal and the best
conditions of the C Controller module.
9.1

Daily Inspection

The following table lists the items to be inspected daily.
No. Item
1 Installation of base unit
2 Installation of I/O modules
3 Connection
Indicator LEDs
Power supply module
"POWER" LED
Power supply module
"LIFE" LED
C Controller module
"MODE" LED
C Controller module
4
"ERR." LED
Input module
Input LED
Output module
Output LED
*1 : When the Life detection power supply module (Q61P-D) is used, check the LIFE LED.
134
MAINTENANCE AND INSPECTION
Inspection
Check the fixing screws and
cover for looseness.
Check the module and
module fixing hook for
looseness.
Check the terminal screws
for looseness.
Check the distance between
solderless terminals.
Check the connector part of
the cable.
Check that the LED is lit.
*1
Check that the LED is lit.
Check that the LED is lit in
the RUN status.
Check that the LED is off.
Check for on/off of the LED.
Check for on/off of the LED.
Criterion
The base unit is securely installed.
The module fixing hooks are securely
engaged and the modules are
securely mounted.
No looseness.
Proper clearance between solderless
terminals.
Connectors are securely connected.
-
Lit green.
(Faulty if the LED is off or on (red))
Lit green or orange, flashing (orange)
(Faulty if the LED is off, on (red), of
flashing (red))
Lit.
(Faulty if the LED is off)
Off
(Faulty if the LED is off or flashing)
Lit when the input is on.
Off when the input is off.
(Faulty if the reaction is other than
above.)
Lit when the input is on.
Off when the input is off.
(Faulty if the reaction is other than
above.)
Action
Retighten the screws.
Securely engage the module
fixing hooks.
Retighten the terminal
screws.
Provide proper clearance
between solderless terminals
Retighten the connector fixing
screws.
 Page 394, CHAPTER 23
 QCPU User's Manual
(Hardware Design,
Maintenance and Inspection)
 Page 394, CHAPTER 23