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Installation and Wiring
20
NetLinx Master Cards and Modules
Replacing the Lithium Batteries
The Master Cards are equipped with two lithium batteries that have a life of approximately 5 years
to protect their memory. When DC power is on, the batteries are not used. When replacing the
batteries, remove one at a time to avoid losing the program in memory.
1. Discharge the static electricity from your body by touching a metal grounded object.
2. Unplug the connectors from the Controller or Module.
! NetLinx Integrated Controller (NXI): Remove the rear panel from the NXI. Then,
disconnect the NXI control cable and remove the Master Card.
! NetLinx Module (NXS-MHS): Remove the rear panel from the Module. Then, remove
the Master Card.
3. Carefully slide one battery out of its socket, and insert the new battery.
4. Plug the 2-pin PWR (green) connector to reapply power. Wait approximately 1 minute. Then,
remove the PWR connector again.
5. Carefully slide the other battery out of its socket and insert the new battery.
6. Replace the Master Card (re-connect the NXI control cable to the Master Card if replacing in
an NXI); replace the rear panel and secure with the mounting screws.
7. Reconnect all control, communication, and power cables.
FIG. 14 Lithium battery and socket
Battery (Li-Mv, 3V)
socket