Mitsubishi MELSEC iQ-F FX5UC, User Manual

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8 MAINTENANCE AND INSPECTION
8.1 Daily Inspection
8
MAINTENANCE AND INSPECTION
8.1
Daily Inspection
Perform the following inspections on a daily basis.
8.2
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.
*1 The operating ambient temperature is 0 to 55

for products manufactured before June 2016.
The product life of relay contacts varies considerably depending on the load type used. Note that loads
generating reverse electromotive force or rush current may cause poor contact or deposition of contacts which
may lead to considerable reduction of the contact product life.

Page 97 Product life of relay output contacts
Item Inspection item Description
1 Installation status
of the module Mounting status of the
module The module should be securely mounted.
Looseness of cover The cover should not be off.
2 Connection
status Looseness of terminal
screws Retighten the terminal screws.
Proximity of crimp
terminals Check the proximity between crimp terminals and correct the clearance.
Looseness of connectors Connect cable connectors securely.
3 LED status Check that the LED status is normal.
 Page 127 Checking with LEDs
User's manuals for each module
Item Inspection item Description
1 Ambient
environment Operating ambient
temperature The temperature in the panel should be -20 to 55

*1
.
Operating ambient
humidity The humidity in the panel should be 5 to 95%RH.
Working atmosphere Free from corrosive or flammable gas and excessive conductive dust
2 Power supply voltage Voltage within the specified range should be supplied.
3 Installation status Dirt, foreign matter Wipe away any dirt or foreign matter. Clean the module.
4 Connection
status Looseness of terminal
screws Retighten the terminal screws.
Proximity of crimp
terminals Check the proximity between crimp terminals and correct the clearance.
Looseness of connectors Connect cable connectors securely.
5 Battery BAT LED The BAT LED should be turned off.
If flashing, replace the battery with new one.
Period following the
battery purchase Replace the battery with new one if 5 years or more have passed since the battery was purchased.
OFF status of SM51
(SM8005) and SM52
(SM8006) SM51 (SM8005) and SM52 (SM8006) should be off.
If SM51 (SM8005) and SM52 (SM8006) are on, replace the battery with new one.
6 Module Diagnostics (CPU Diagnostics) The normal status of the system should be checked with the Module Diagnostics (CPU Diagnostics).
 Page 129 Module Diagnostics (CPU Diagnostics)
7 Relay contacts Check the product life of relay outputs.

Page 97 Product life of relay output contacts