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

9.2

Periodic Inspection

This section shows items that should be inspected once or twice every six months to a year.
Also, check these items when the equipment has been relocated or modified, or wiring layout has been changed.
Inspection item
Ambient environment Ambient
temperature
Ambient humidity
Atmosphere
Power supply voltage check
Mounting status Looseness and
backlash
Attachment of dirt
and foreign material
Connection status Terminal screw
looseness
Clearance between
the solderless
terminals
Connector
looseness
Battery
*1 The temperature in the control panel installed a programmable controller is called the ambient temperature.
Inspection method
Measure the temperature by
*1
using a thermometer.
Measure the humidity by using
a hygrometer.
Measure corrosive gases.
Measure a voltage between
the 100-240 VAC terminals
and/or between the 24 VDC
terminals.
Touch the module to check for
the looseness and rattling.
Check visually.
Check for the terminal screw
looseness.
Check the clearance between
the solderless terminals.
Check for the cable connector
looseness.
Check the length of time after
purchase of the battery.
Judgment criteria Corrective action
0 to 55 Create the environment that satisfies
the judgment criteria.
5 to 95 %RH
No corrosive gases
85 to 264 VAC Change the power supply.
15.6 to 31.2 VDC
The module must be mounted Fix the module with screws. If the
securely. module is loose, retighten the screws.
Dirt and foreign matter must Remove any dirt or foreign material.
not be attached.
The terminal screws must not Retighten the terminal screws.
be loose.
The proper clearance must be Provide the proper clearance between
provided between solderless the solderless terminals.
terminals.
The cable connector must not Connect the connector without
be loose. looseness.
The battery must not be used Replace the battery if it has been used
more than five years. more than five years.
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9.2 Periodic Inspection
9