SilentKnight 5129 Digital Alarm Communicator Transmitter - Manual (Page 9)

Panel Description and Installation
150805 5
S
ECTION
3
P
ANEL
D
ESCRIPTION AND
I
NSTALLATION
3.1 Panel Description
3.1.1 Phone Line Monitors
The 5128/29 dialer has two phone line monitor circuits, which detect phone line faults by monitoring their
voltages. These circuits feature a 40 to 90 second delay before a line fault is reported as a trouble. When a fault
is detected for longer than this amount of time, the audible trouble signal will sound, the message will be
displayed on the 5230 annunciator liquid crystal display (LCD) (if used), and the trouble will be reported to the
central station.
Note: To comply with industry standards, this product is equipped with line seizure. This means that any time the sys-
tem’s dialer needs to communicate with the central station, it will NOT be possible to use any telephones that are
on the same line(s) as the fire system. Normally this condition will last less than one minute, but could last for as
long as 15 minutes under adverse telephone circuit conditions.
3.1.2 Watchdog Circuit
If the 5128/29 stops running, the watchdog circuit automatically detects the problem and attempts to resume
normal operation by resetting the communicator. Each time the watchdog circuit resets the system, it also
sounds the trouble signal.
3.1.3 Power Loss Reporting
The 5128/29 will report low AC conditions. It can monitor a contact closure AC failure output. The 5129 can
also monitor the control panel’s main AC power input.
The AC report delay time is programmable. See Section 5, Step 24.
3.1.4 EEPROM
The electrically erasable read-only memory (EEPROM) is used to store specific information such as system
configuration, telephone numbers, reporting format, and account numbers. The EEPROM retains the
programmed information even when all electrical power is removed. It can be programmed more than 1,000
times without losing its ability to store information.
CAUTION:
To avoid the risk of electrical shock, make sure the main control power is OFF when wiring. DO NOT apply power until
wiring is completed following the procedures described in this manual.