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

9
MAINTENANCE AND INSPECTION
This chapter shows items that should be maintained or inspected daily or periodically to use this product properly and in
optimal condition at all times.
9.1

Daily Inspection

This section shows items that should be inspected daily.
Inspection item
Mounting status of a base unit
Mounting status of a module
Connection status
LED status
9 MAINTENANCE AND INSPECTION
88
9.1 Daily Inspection
Inspection method
Looseness Check that mounting screws
are not loose and the cover is
not dislocated.
Looseness Check that the module is
mounted and the module fixing
hook is fixed securely on the
base unit.
Terminal screw Check for the terminal screw
looseness looseness.
Clearance between Check the clearance between
the solderless the solderless terminals.
terminals
Connector Check for the cable connector
looseness looseness.
POWER LED Check the lighting status.
(Power supply
module)
READY LED
ERROR LED
OVERCURRENT
LED
I/O indicator LED
(I/O module)
Judgment criteria
The base unit must be fixed
securely.
The module must be mounted
securely.
The terminal screws must not
be loose.
The proper clearance must be
provided between solderless
terminals.
The cable connector must not
be loose.
ON
(Failure if it is OFF)
ON
(Failure if it is OFF)
OFF
(Failure if it is ON or flashing)
OFF
(Failure if it is ON or flashing)
• I/O signal is ON: The LED is
ON.
• I/O signal is OFF: The LED
is OFF.
Corrective action
Retighten the screws.
Fix the module fixing hook
securely on the base unit.
Retighten the terminal screws.
Provide the proper clearance.
Connect the connector with no
loosening securely.
Page 221 Checking Errors
with LEDs
Refer to the manual for each
module.