Each alarm condition shall be transmitted to the central computer
during the next interrogation cycle.
b. Outputs. Local processor outputs shall reflect the state of
commands issued by the central station. The outputs shall be a form C
contact and shall include normally open and normally closed contacts.
The local processor shall have at least 4 command outputs.
c. Communications. The local processor shall be able to communicate
with the Central Station via RS485 or TCP/IP as a minimum.
2.4.1.1
Processor Power Supply
Local processor and sensors shall be powered from an uninterruptible power
source. The uninterruptible power source shall provide 8 hours of battery
back-up power in the event of primary power failure and shall automatically
fully recharge the batteries within 12 hours after primary power is
restored. If the facility is without an emergency generator, the
uninterruptible power source shall provide 24 hours of battery backup
power. There will be no equipment malfunctions or perturbations or loss of
data during the switch from primary to battery power and vice versa.
Batteries shall be sealed, non-outgassing type. The power supply shall be
equipped with an indicator for ac input power and an indicator for dc
output power. Loss of primary power shall be reported to the central
station as an alarm.
2.4.1.2
Auxiliary Equipment Power
A GFI service outlet shall be furnished inside the local processor's
enclosure.
2.4.2
Entry Control Local Processor
The entry control local processor shall respond to interrogations from the
field device network, recognize and store alarm status inputs until they
are transmitted to the central station and change outputs based on commands
received from the central station. The local processor shall also
automatically restore communication within 10 seconds after an interruption
with the field device network and provide dc line supervision on each of
its alarm inputs. The entry control local processor shall provide local
entry control functions including communicating with field devices such as
card readers, keypads, biometric personal identity verification devices,
door strikes, magnetic latches, gate and door operators and exit
pushbuttons. The processor shall also accept data from entry control field
devices as well as database downloads and updates from the central station
that include enrollment and privilege information. The processor shall
also send indications of success or failure of attempts to use entry
control field devices and make comparisons of presented information with
stored identification information. The processor shall grant or deny entry
by sending control signals to portal control devices and mask intrusion
alarm annunciation from sensors stimulated by authorized entries. The
entry control local processor shall use inputs from entry control devices
to change modes between access and secure. The local processor shall
maintain a date-time and location stamped record of each transaction and
transmit transaction records to the central station. The processor shall
operate as a stand-alone portal controller using the downloaded data base
during periods of communication loss between the local processor and the
central station. The processor shall store a minimum 4000 transactions
during periods of communication loss between the local processor and the
SECTION 13720A
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