Installation Manual

Kingfisher Company, inc. STAR-ELT Manual
KCi #99420-MAN Rev 0.6 Page 18 of 29
13.4 Power Trouble Indicator (LED2)
The STAR-ELT monitors AC voltage and switches to the battery when it detects either a
brownout condition or total loss of AC voltage. Upon detecting these conditions, the Yellow
Power Fault indicator LED2 flashes every second.
When AC is present, the STAR-ELT periodically removes the battery charging voltage and tests
to see if the battery is holding a charge. If not, the implication is either that the battery is faulty
and needs to be replaced or that the battery has been removed, one of its wires has broken, or the
battery fuse is blown. Any of these conditions requires attention. The STAR-ELT indicates
power trouble with the flashing Yellow LED. It transmits a trouble message when the fault is
first detected and then with every daily test transmission for as long as the condition persists.
The same Yellow LED is illuminated under two other conditions. When the STAR-ELT is first
powered up, or is reset by pressing the reset button the LED flashes to indicate the firmware
version installed. The version number is in the format of X.YY and the LED flashes to indicate
X, pauses, and then flashes to indicate YY.
When the STAR-ELT is communicating with a programming device the Yellow LED is
illuminated solidly.
14. Hardware Startup
From an OFF condition the STAR-ELT is typically started up by applying DC power from an
FM approved fire control panel or auxiliary power supply, or applying AC power to the optional
AC Power Supply Module. Generally, attaching a charged battery before system power is
applied does not cause the operation of the hardware to start. This sequence of events helps to
protect the battery from damage when its voltage gets low and ensures proper operation of the
STAR-ELT.
When the STAR-ELT is first started up or reset, it flashes two messages on the Yellow Trouble
LED. The first message is the version of the firmware, where the LED flashes x times for the
major version number, pauses momentarily, and then flashes y times for the minor version
number. The second message indicates what caused the Interface to reset. Pushing the RESET
button (SW2) causes the LED to flash 1 time. If all power is removed from the Interface, the
restart message will flash 3 times when power resumes.
The STAR-ELT next scans its entire program memory and compares a checksum calculated
from all the values in it to the checksum that was calculated when the device was originally
programmed. If these are different the program memory is assumed to be corrupted and the
processor solidly lights the Yellow Trouble LED and repeatedly prints the message: “Bad
Checksum” over its communication port until the problem is corrected.