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inoperative). The data stored by the encoders is protected by a 3.6 V lithium backup battery
pack located in the base of the robot.
The replacement battery pack part number is 09977-000.
IMPORTANT: It is not recommended to use substitute batteries supplied by
other manufacturers.
NOTE: The previous battery (part number 02704-000, has been superseded by
this battery pack. The battery replacement interval and procedure have not
changed.
Encoder Battery Replacement Time Periods
If the robot is kept in storage and not in production, or the robot is turned OFF (no 24 VDC sup-
ply) most of the time, then the battery should be replaced every 2 years.
If the robot is turned ON with 24 VDC supplied to the robot more than half the time, then you
can increase the replacement interval to a maximum of 4 years.
NOTE: Dispose of the battery according to all local and national environmental
regulations regarding electronic components.
Battery Replacement Procedure
Use the following procedure to replace the battery after you have procured a replacement bat-
tery.
CAUTION: Failure to follow these instructions exactly can result in lost
!
encoder data, and unpredictable robot behavior.
1. Remove all power from the robot.
2. Disconnect the 24 VDC supply cable from the robot +24 VDC input connector.
3. Disconnect the 200/240 VAC supply cable from the robot AC input connector.
4. Using a 5 mm hex wrench, carefully unscrew the robot chassis captive screw.
NOTE: You do not need to completely remove the screw, as it is captured
on the heat sink.
5. While holding the chassis heat sink, carefully and slowly lower the chassis down. This
provides access to the battery pack, as shown in the following figure.
118
eCobra 600 and 800 Robots with EtherCAT
24402-000 Rev B
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