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Appendix
The absolute encoder backup specifications are shown in the table below.
List of Absolute Encoder Backup Functions
Battery type
AB-5 (by IAI)
Battery voltage
3.6 V
Current capacity
2000 mAH
Detection voltage for battery
voltage low alarm
(Typical) 3.1 V 3.0 V
3.2 V
Detection voltage for battery
voltage low error
(Typical) 2.5 V 2.3 V
2.7 V
Time after alarm detection until
error detection (reference)
10 days at 20
C based on continuous operation; 7 days if the power is not
supplied.
10 days at 40
C based on continuous operation; 2.5 days if the power is not
supplied.
Minimum data retention voltage
2.7 V min. (Varies depending on the encoder characteristics.)
Time after error detection until
data loss (reference)
With an absolute encoder, an absolute reset must be performed once
an error is detected.
Data protection time during
battery replacement
15 minutes (Maximum retention time
when no battery is installed in the
battery holder)
Data is retained by the super
capacitor inside the absolute brake
unit.
Temperature 40
C, power supplied
0% of the time
2 years
Guide on when to replace
battery
Temperature 40
C, power supplied
50% of the time
4 years
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