Durable Parts - Mitsubishi Electric MELDAS C6 Maintenance Manual

4. DAILY MAINTENANCE AND PERIODIC INSPECTION AND MAINTENANCE

4.3.2 Durable parts

(1) 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 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)
drop is detected
Battery cumulative data ...... 45,000 hours (At room temperature. The life will be shorter if the
hold time
Battery life .......................... Approx. 5 years (from date of battery manufacture)
Discharge current ............... 40µA or less
(Replace the battery when the battery voltage drop warning alarm appears in the NC screen. The
internal data could be damaged if the battery voltage drop warning alarm appears.)
Always replace the battery with the control unit 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) Confirm that the control unit power is OFF. (If the power is not OFF, turn it OFF.)
(2) Open the upper front cover of the control unit.
(3) Remove the battery from the battery holder.
(4) Pullout the connector connected from the battery from the BAT connector.
(5) Replace with a new battery, and connect the connection connector from the battery to the
BAT connector.
(6) Fit the battery into the battery holder.
(7) Close the front cover of the control unit.
Control unit
LED1 LED2
SERVO1 SERVO2
ENC HANDLE
SIO TERMINAL
CAUTION
If the battery voltage low warning alarm occurs, the program, tool data and parameters,
etc., could be damaged. After replacing the battery, reload all data with the input/output
device.
Do not replace the battery while the power is ON.
Do not short-circuit, charge, overheat, incinerate or disassemble the battery.
Dispose of the spent battery according to local laws.
4.3 Replacement Methods
2.6V (Battery voltage drop warning alarm)
temperature is high.)
Front cover
BAT connector
Connection connector
Battery holder
Battery
DC24V IN
IC CARD
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.
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