Chapter 4 Home-Return / Absolute Reset
93
4.4.6 Detection of Absolute Battery Voltage Drop
An error will be detected corresponding to the voltage when the absolute battery voltage starts
to drop.
Voltage Alarm
2.5V ±8% or less 41C ABS Unit Encoder Error (2)
An absolute reset is necessary after battery replacement when an alarm gets generated. (The
controller checks the battery voltage when the power is turned on. It would not be detected
when the battery voltage drops to the alarm level during the power conducted to the controller.
Normal
3.6V
2.5V
Alarm
occurrence
Battery voltage
Absolute reset is
required
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