When 24 VAC supply power to the BACnet Router is disconnected or lost, the BACnet Router is nonoperational, but the POWER LED remains On and the data protection battery continues to power the BACnet Router for approximately 1 to 5 minutes while volatile data is backed up in nonvolatile memory. The RUN LED goes Off when data backup and shutdown are complete.
Important: The data protection battery must be installed and charged before disconnecting the 24 VAC supply power.