Iai-america XSEL-QX Manuel d'utilisateur Page 446

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Appendix
The X-SEL-PX/QX controller provides an absolute-encoder backup battery enable switch for each linear
movement axis. When replacing any absolute-encoder backup battery following a battery error, turn OFF
the absolute-encoder backup battery enable/disable switch corresponding the applicable axis (the
controller power should be turned off during the battery replacement). Once a new battery has been
installed, turn on the controller power, and then reset the absolute-encoder backup battery enable/disable
switch to the ENB (enable) position. If this procedure (turn on the controller power o enable the switch) is
not followed, the absolute encoder data will not be backed up and the absolute-encoder backup battery
will consume abnormally large amounts of power. In the worst condition, the battery voltage may drop to
zero in several weeks.
There is no absolute-encoder backup battery enable/disable switch for SCARA axes.
Reference Battery Replacement Intervals
Reference battery replacement interval (at 40qC)
Battery
model
Power ON time 0% Power ON time 50%
ARM length 120/150/180 AB-6
SCARA axis
ARM length 250 ~ 800 AB-3
3 years 5 years
Linear movement axis AB-5 2 years 4 years
List of Absolute-Encoder Backup Battery Functions
Battery voltage 3.6 V
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 ~ 2.2 V
Time after alarm detection until
error detection (reference)
10 days at 20qC based on continuous operation; 7 days if the power is
not supplied at all.
10 days at 40qC based on continuous operation; 2.5 days if the power
is not supplied at all.
Minimum data retention voltage Min 2.7 V (Varies depending on the encoder characteristics)
Data protection time during battery
replacement
(Retained by the super capacitor)
15 minutes (Maximum retention time when no battery is installed in the
battery holder)
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