Mitsubishi Electric MELDAS C6 Interface Manual page 97

B con-
Signal name
tact
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BATTERY ALARM
[Function]
This signal notifies that the voltage of the data storage battery in the controller or the battery
supplying to the absolute position detector has dropped below the specified value.
[Operation]
The signal turns ON when:
(1) The voltage of the data storage battery is checked when the power is turned ON and is below
the specified voltage (approx. 2.6V). At this time, the system alarm "Z52 BATTERY FAULT" will
display.
(2) A fault is detected in the power voltage supplied to the absolute position detector.
At this time, "Z73 ABS. WARNING 0001" and "S52 SERVO WARNING 9F" will display.
(3) A fault is detected in the power voltage for the speed detector in the absolute position detector.
At this time, "Z71 DETECTOR ERR 0001" and "S01 SERVO ALARM" will display.
In the case of (1) and (2), automatic starting is possible.
The signal turns OFF when:
(1) For alarms caused by ON condition (1), the signal can be turned OFF by resetting the setting
and display unit. However, if the battery voltage is still below the specified value when the
controller power is turned OFF and ON, the signal will turn ON again.
(2) For alarms caused by ON conditions (2) and (3), the signal can be turned OFF by removing the
power voltage fault and then turning the power ON again.
[Related signal]
(1) Battery drop cause (R40)
[Caution]
If this battery alarm occurs (especially in the "ON" conditions (1)) assume that the data which
should be registered, such as the machining programs, has been damaged, and take suitable
measure.
Always make a back up of the data in the controller as a safeguard for when this alarm occurs.
6. EXPLANATION OF INTERFACE SIGNALS
6.1 PLC Input Signals (Bit Type: X***)
Signal
abbreviation
BATAL
6-1-8
1st system 2nd system
X42F —
3rd system
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