Durable Parts - Mitsubishi Electric MELDAS 60 Series Maintenance Manual

3.3.2 Durable Parts

(1) Control unit battery
All data, such as the parameters and machining programs that need to be backed up when the
power is turned OFF, are saved by a lithium battery installed in the control unit's battery holder.
Battery ................................. With ER6 connector (Toshiba with Mitsubishi specifications)
Initial battery voltage ........... 3.6V
Voltage at which voltage ..... 2.8V (Battery voltage drop caution alarm screen display)
drop is detected
Battery cumulative data ....... 45,000 hours (At room temperature. The life will be shorter if the
holding time
Battery life ........................... Approx. 5 years (from date of battery manufacture)
Discharge current ................ 40µA or less
(Replace the battery when the battery voltage drop caution alarm appears on the NC screen. The
internal data could be damaged if the battery voltage drop warning alarm appears.)
a) Replacement procedures
Always replace the battery with the control section (machine) power turned OFF.
Complete the replacement within 30 minutes after turning the power OFF. (If the battery is not
connected within 30 minutes, the data being backed up will be destroyed.)
1) Turn the control section (machine) power OFF.
2) Open the electric cabinet door, and confirm that the control unit LED, 7-segment display, etc.,
3) If an extension unit is mounted, and a cable is connected to the front of the control section,
4) Open the front cover of the control section by pulling on the right side of the door (the side
5) Remove the battery from the battery holder.
6) Pull the connector connected to the battery out from the BAT connector on the control section
7) Replace the battery with the new one. Insert the connector connected to the new battery into
8) Fit the battery into the battery holder.
9) Close the front cover of the control section. At this time, confirm that the cover is closed by
10) Close the door of the electric cabinet.
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3. DAILY MAINTENANCE AND PERIODIC INSPECTION AND MAINTENANCE
are all OFF.
disconnect the cable.
without fixing screws).
HR081/HR082/HR083 power supply PCB.
the BAT connector on the control section HR081/HR082/HR083 PCB. Pay attention to the
connector orientation, being careful not to insert backwards.
listening for the "click" sound when the latch catches.
HR081/082/HR083
BAT connector
Connection connector
Battery holder
Battery
Front cover
Open the front cover
of the control section.
search engine
3.3 Replacement Methods
2.6V (Battery voltage drop warning alarm screen display + control
section LED display)
temperature is high.)
Precautions for handling battery
• Always replace the battery with the same type.
• Do not disassemble the battery.
• Do not place the battery in flames or water.
• Do not pressurize and deform the battery.
• This is a primary battery so do not charge it.
• Dispose of the spent battery as industrial waste.
II-56
Control section