Periodic Inspection - Mitsubishi Electric MELSEC iQ-R Series User Manual

9.2

Periodic Inspection

The following table lists the items that must be inspected periodically.
Item Inspection item
1 Environment
2 Power supply voltage check
3 Installation
status
4 Connection
status
*1 The ambient temperature is a temperature in the control panel when the safety remote I/O module is installed in a control panel.
Warning
Shut off the power supply externally before cleaning. Failure to do so may cause the module to fail or malfunction.
Precautions
• Do not disassemble or modify the module. Doing so may cause failure, malfunction, injury, or a fire.
• Shut off the power supply externally (all phases) before mounting or removing the module. Failure to do so may cause the
module to fail or malfunction.
• Do not touch any conductive parts and electronic components of the module. Doing so can cause malfunction or failure of
the module.
9 MAINTENANCE AND INSPECTION
78
9.2 Periodic Inspection
Inspection method
Ambient Measure the temperature by
*1
temperature using a thermometer.
Ambient humidity Measure the humidity by using a
hygrometer.
Atmosphere Measure corrosive gases.
Measure the voltage across
24VDC terminals.
Looseness and Check for looseness or rattling by
rattling shaking the module lightly.
Looseness of Check for looseness by shaking
connecting plugs connecting plugs lightly.
Judgment criterion
0 to 55
5 to 95%RH
No corrosive gases
20.4 to 28.8VDC
The module must be installed
securely.
The connecting plugs must not
be loose.
Action
Create the environment that
satisfies the judgment criterion.
Change the supply power.
Retighten screws securely.
Make sure that the plugs are
securely connected.