User's Manual

56034903 © 2008 Telular Corporation
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2.4.2 AC Failure Condition (ACFC)
AC failure condition (ACFC) is detected immediately when the AC power drops below 102 VAC. The
AC Power LED goes out immediately, the STC LED blinks once and the STC2 trip output is activated
after 2 hours. When AC power returns to normal (≥106 VAC for 60 seconds), the AC Power LED
turns on immediately and the STC trip output restores after 60 seconds.
2.4.3 Dial Tone Failure (DTF)
The Telguard continuously monitors the 30V supply circuit that provides dial tone to the C/C. A Dial
Tone Failure (DTF) is declared when the 30V supply drops to 20V or less while the C/C is on-hook.
The STC LED will flash 6 times and the STC relay will trip. Additionally, a TYPE 2 supervisory
message is automatically transmitted to the Telular Communications Center. This condition
represents a catastrophic failure and will require contacting the Telular Communications Center for
resolution.
2.4.4 Catastrophic Failure (CF)
Catastrophic Failure (CF) is any condition that causes the Telguard to stop functioning at all levels.
Most commonly because of AC power failure followed by a complete discharge of the backup battery.
The STC1 and STC2 trip outputs are activated and visible indication is loss of all LED activity. Total
loss of power to Telguard does not prevent transmission of alarm messages from the host C/C
“through” the Telguard and out over an operative phone line in the normal fashion. This is a single
line system.
2.5 TELGUARD AUTOMATIC SELF-TEST REPORT
The Telguard automatic self-test signal is programmed to daily, weekly or monthly schedule as prescribed by
activation form. The central station receives the automatic self-test report in the same format that the C/C
normally uses for communication over the telco line. The central station provides the Telguard self-test code
along with the time and frequency of transmission when the Telguard is initially activated. The Communication
Center captures all current and historical data pertaining to the operation of the Telguard when it processes
the automatic self-test signal on to the central station. This data contains current operational status (C.O.S.)
of the Telguard such as "All OK", "AC fail condition", "low/missing battery condition", "line fault condition", or
any combination of these as well as the current signal strength. In addition, the data also contains historical
data for supervisory events that occurred since the last self-test signal was transmitted. This data includes
the number of occurrences of AC fail conditions, low battery conditions, line fault conditions, communications
failure conditions and no cellular service conditions. This additional information is available by contacting
Telular Technical Support.
2.5.1 Telguard Remote Query Capability
Although Telguard has the capability for a daily, weekly, or monthly automatic self-test, a separate
feature is provided for determining the current operational status of every Telguard. This feature is
called Remote Query and is used to provide real-time operational status for Telguard on-demand. It
is useful in resolving STC events that are reported by the C/C to the central station. Authorized
personnel can initiate the Remote Query at any time by calling Customer Service. The Remote
Query causes Telguard to upload current operational status data and historical data, just as the
automatic self-test described above, except that the query signal is controlled by the one who initiates
it. The query signal is held in the Telguard database at the Communication Center for review and is
not forwarded on to the central station.
2.6 TELGUARD TERMINAL STRIP CONNECTIONS
The conveniently located terminal strips provides wiring connections for the Telguard supervisory trip outputs,
battery leads for connecting to a 12 volt 4.0Ah, or 7.0AH rechargeable battery and AC power. The terminal
strip can accommodate solid or stranded wire sizes from 14 to 22 gauge.
2.6.1 Programmable Supervisory Trip Outputs (STC1 and STC2) Relays
The Telguard has two supervisory relay trip outputs (STC1 and STC2) and are energized in a
powered up state when no system troubles exist. It enables a supervisory trouble code to be
transmitted to the central station when connected to a C/C’s 24-hour instant input zone. The STC
relays are programmable, using a standard touch-tone telephone or buttset, to meet virtually any
installation requirement.