Chapter 16 Maintenance And Inspection; Daily Inspection; Periodic Inspection - Mitsubishi Electric MELSEC iQ-F Series User Manual

16
MAINTENANCE AND INSPECTION
16.1

Daily Inspection

Perform the following inspections on a daily basis.
Item Inspection item
1 Installation Looseness of mounting
status of the screws
module
Mounting status of the
module
Looseness of cover
2 Connection Looseness of terminal
status screws
Proximity of crimp terminals
Looseness of connectors
3 LED status
16.2

Periodic Inspection

Perform the following inspections once or twice every 6 months to a year.
Also perform the inspections when facilities have been relocated or modified or when wiring has been changed.
Item Inspection item
1 Ambient Operating ambient
environment temperature
Operating ambient humidity
Working atmosphere
2 Power supply voltage
3 Installation Looseness, rattling
status
Dirt, foreign objects
4 Connection Looseness of terminal
status screws
Proximity of crimp terminals
Looseness of connectors
5 Battery BAT LED
Period following the battery
purchase
OFF status of SM51
(SM8005), SM52 (SM8006)
6 Module diagnostics
7 Relay contacts
*1 The operating ambient temperature is 0 to 55 for products manufactured before June 2016.
The product life of relay output contacts varies considerably depending on the load type used. Note that loads
generating reverse electromotive force or rush current may cause poor contact or welding of contacts which
may lead to considerable reduction of the contact product life.
Page 191 Product life of relay output contacts
Description
Retighten the mounting screws.
The module should be securely mounted.
The cover should not be off.
Retighten the terminal screws.
Check the proximity between crimp terminals and correct the clearance.
Connect cable connectors securely.
Check that the LED status is normal.
Page 253 Checking with LEDs
User's manuals for each module
Description
The temperature in the control panel should be -20 to 55.
module)
The temperature in the control panel should be 0 to 55. (FX5UJ CPU module/ FX5S CPU
module)
The humidity in the control panel should be 5 to 95%RH.
Free from corrosive or flammable gas and excessive conductive dust.
Voltage within the specified range should be supplied.
Retighten mounting screws.
Wipe away any dirt or foreign objects. Clean the module.
Retighten the terminal screws.
Check the proximity between crimp terminals and correct the clearance.
Connect cable connectors securely.
The BAT LED should be turned off. When flashing, replace the battery with a new one.
Replace the battery with a new one if 5 years or more have passed since the battery was
purchased.
SM51 (SM8005) and SM52 (SM8006) should be off. When SM51 (SM8005) and SM52 (SM8006)
are on, replace the battery with a new one.
The normal status of the system should be checked with the Module Diagnostics.
Page 256 Module diagnostics
Check the product life of relay outputs.
Page 191 Product life of relay output contacts
*1
(FX5U CPU module/ FX5UC CPU
16 MAINTENANCE AND INSPECTION
16.1 Daily Inspection
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