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REPLACING THE BATTERY FOR FX3U-CONTROLLER
Replace battery within 20 seconds or with the unit’s control voltage turned on, otherwise
data loss will occur in the PLC memory (RAM).
•
Switch o
ff
main disconnect.
•
Lift up cover on the lower edge (1) and remove cover of the housing (2).
•
Remove the battery (3) from the holder.
•
Disconnect the plug-in connection (4).
•
Plug in new battery.
•
Insert new battery into holder.
•
Replace the top cover of the housing (2).
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