Tyco iSTAR eX, Installation And Configuration Manual

Page: 54 / 232

Backup and Restore
1–34 iSTAR eX Installation and Configuration Guide
iSTAR eX receives the AC Fail and Low Battery signals from the External
Power Supply through the PMB and then over the Serial Peripheral
Interface (SPI) bus to the GCM.
PMB
The PMB is required for power failure backups. iSTAR eX gets its power loss
inputs as protocol messages over the SPI bus from the PMB. If there is no
device responding to the Power Management protocol over the SPI bus,
iSTAR eX will not get its power loss “inputs ” and will not know when to
perform a backup.
NOTE
You can tell the iSTAR eX to initiate the backup process by wiring Low
Battery to Backup Now. When the Backup Now signal activates, iSTAR eX
stops all processes, writes all data to the Compact Flash, and waits for the
AC Fail signal to deactivate. When power is restored, the AC Fail signal
deactivates and the iSTAR eX reboots. It recovers the data from the
Compact Flash and resumes normal operation.
UL has not evaluated wiring Battery Low to Backup Now and the use of
the Backup Now feature.
NOTE
The iSTAR eX cannot be installed as a standalone unit.
The tamper, low battery, and AC power fail inputs must be configured in
the C•CURE software. If the tamper, low battery, and AC power fail
inputs require configuration, go to the Hardware > Controller > Special
Purpose Input dialog box, as shown in Figure 4.6 on page 4-11 .
If the PMB is not connected or if it fails, the low battery and AC power fail
inputs will be reported as true. This notifies users that the PMB is no
longer functional. To prevent repetitive reporting of the inputs, clear the
configuration check boxes.