Chapter 7 Maintenance And Inspection; Daily Inspection - Mitsubishi Electric MELSEC iQ-R Series User Manual

7
MAINTENANCE AND INSPECTION
This chapter shows items that should be maintained or inspected daily or periodically to use a C Controller module properly
and in optimal condition at all times.
7.1

Daily Inspection

This section shows items that should be inspected daily.
Item Inspection item
1 Mounting status of a
base unit
2 Mounting status of a
module
3 Connection status
4 LED status
7 MAINTENANCE AND INSPECTION
60
7.1 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 Check the lighting status in the
BUS RUN state.
ERROR LED Check the lighting status.
Dot matrix LED Check the lighting status.
I/O indicator LED Check the lighting status.
(I/O module)
Acceptance criteria
The base unit is securely fixed.
The module is securely
mounted.
The terminal screws are not
loose.
The proper clearance has been
provided between the
solderless terminals.
The cable connector is not
loose.
The LED is ON.
(Failure if it is OFF)
The LED is ON.
(Failure if it is OFF)
The LED is OFF.
(Failure if it is ON or flashing)
The LED turns ON and OFF.
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
between the solderless
terminals.
Connect the connector without
looseness.
Troubleshooting by symptom
(MELSEC iQ-R C Controller
Module User's Manual
(Application))
 User's manual (Application)
for each module