Using the EF-Series Unit
2-14 Rev 2/01
If the battery voltage is less than the low-low alarm limit configured for point E1, the unit:
1.
Sets the Real-Time Clock (RTC) alarm for 15 minutes from the present time if a charge
voltage (point E2) is greater than the battery voltage (point E1), or for 55 minutes if the
charge voltage is less than the battery voltage.
2.
Writes the message “Low Battery, Sleep Mode” to the LCD.
3.
Enters the Sleep mode.
4.
Shuts down communications.
5.
The unit wakes up from Sleep mode by the Real-Time Clock alarm (set in Step 1) and
rechecks the voltage to see if operation is possible. If the voltage is greater than the
low-low alarm limit for point E1, a normal restart sequence initiates.
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