Chapter 8 Maintenance And Inspection; Daily Inspection; Periodic Inspection - Mitsubishi Electric FX5UC-96MT/D User Manual

8
MAINTENANCE AND INSPECTION
8.1

Daily Inspection

Perform the following inspections on a daily basis.
Item Inspection item
1 Installation status
of the module
2 Connection
status
3 LED status
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.
Item Inspection item
1 Ambient
environment
2 Power supply voltage
3 Installation status
4 Connection
status
5 Battery
6 Module Diagnostics (CPU Diagnostics)
7 Relay contacts
*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 111 Product life of relay output contacts
8 MAINTENANCE AND INSPECTION
136
8.1 Daily Inspection
Description
Mounting status of the The module should be securely mounted.
module
Looseness of cover The cover should not be off.
Looseness of terminal Retighten the terminal screws.
screws
Proximity of crimp Check the proximity between crimp terminals and correct the clearance.
terminals
Looseness of connectors Connect cable connectors securely.
Check that the LED status is normal.
Page 141 Checking with LEDs
User's manuals for each module
Description
Operating ambient The temperature in the panel should be -20 to 55
temperature
Operating ambient The humidity in the panel should be 5 to 95%RH.
humidity
Working atmosphere Free from corrosive or flammable gas and excessive conductive dust
Voltage within the specified range should be supplied.
Dirt, foreign matter Wipe away any dirt or foreign matter. Clean the module.
Looseness of terminal Retighten the terminal screws.
screws
Proximity of crimp Check the proximity between crimp terminals and correct the clearance.
terminals
Looseness of connectors Connect cable connectors securely.
BAT LED The BAT LED should be turned off.
If flashing, replace the battery with new one.
Period following the Replace the battery with new one if 5 years or more have passed since the battery was purchased.
battery purchase
OFF status of SM51 SM51 (SM8005) and SM52 (SM8006) should be off.
(SM8005) and SM52 If SM51 (SM8005) and SM52 (SM8006) are on, replace the battery with new one.
(SM8006)
The normal status of the system should be checked with the Module Diagnostics (CPU Diagnostics).
Page 143 Module diagnostics (CPU diagnostics)
Check the product life of relay outputs.
Page 111 Product life of relay output contacts
*1
.