Скачать или смотреть ⛔⛔ MITSUBISHI FX3U Series Programmable Controllers Battery Replacement ⛔⛔

This battery backs up the following data:
. Program memory in built-in RAM
. Keep devices (battery backup devices)
. Results of sampling trace
. Time on clock
. Battery life: Approx. 5 years (at ambient temperature of 25°C (77°F))
The life of the battery changes with respect to ambient temperature. When planning for battery replacement, please estimate the battery life according to the graph to the right and order replacement batteries in advance.

Procedures for replacing battery
When the battery voltage drops while the PLC power is on, the "BATT" LED on the panel is lit in red, and M8005 and M8006 (latch) are turned on.
The memory can be retained for about one month after the lamps turn on. However, the operators may not immediately find the lamps to be on. Prepare a new battery promptly, and replace the battery with the new one.

State of LED
On: The battery voltage is low. Immediately replace the battery
Off: The battery voltage is higher than the value set with D8006. Normal

Battery Replacement
Before replacing the battery Step 4 of the replacement procedure (below), must be performed within 20 seconds after step 3, or the memory content could be lost.
1 Turn the power OFF.
2 Remove the battery cover.
Slightly lift the "B" side of the battery cover ("A"). Grasp the cover ("A") between your fingers and remove it.
3 Remove the old battery.
Extract the old battery from the battery holder ("C"), and disconnect the battery connector ("D").
4 Install the new battery.
Connect the battery connector ("D") to the new battery, and insert the battery into the battery holder ("C").
5 Attach the battery cover ("A").

Caution
1) Battery replacement requires users to verify data integrity such as the PLC program (when a memory cassette is not attached), latched (battery backed) device values and RTC values. Before switching the PLC to RUN, ensure the safety of the operation.
2) If the battery backed data becomes unstable, clear the latched (battery backed) devices, and transfer the data again. Set the RTC and default values again if necessary.

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