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183523-1CD
183523-1CD
6
Maintenance and Troubleshooting
6.10 AC Servomotor Encoder Back-Up Battery
RM2-755-RDR Postioner
6.10 AC Servomotor Encoder Back-Up Battery
The main (sweep) axis and tooling (orbital) axes Sigma-5 servomotors all
incorporate an external Lithium-Ion “keep alive” battery pack that
maintains encoder positioning data in system memory, should the main
cables between the Positioner and Controller be disconnected .
Fig. 6
-
7: Typical Encoder “Keep-Alive” Battery Location
The “keep alive” batteries have a long life in this particular application.
However, should one or more of these batteries drop below a certain
charge level, an indicator will appear on the Programming Pendant
display screen, indicating the need for battery renewal.
To replace a depleted encoder “keep alive” battery pack, gain access to
the encoder plug on the applicable Sigma 5 servomotor, locate the
depleted battery pack, and replace it with a new battery pack of the same
type.
SIGMA 5 AC SERVOMOTOR (see NOTE)
POWER CONNECTOR
DRIVESHAFT
ENCODER
HOUSING
ENCODER
CONNECTOR
ENCODER PLUG
ENCODER
BACK-UP
BATTERY
NOTE: Main (sweep) axis AC servomotor shown.
Connections to tooling (orbital) axis AC
servomotors are identical.
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