2.6.1.2
Operating Mode
Each local processor shall control and monitor inputs and outputs as
specified, independent of communications with the central station. Alarms,
status changes and other data shall be transmitted to the central station
when communications circuits are operable. If communications are not
available, each local processor shall function in a stand-alone mode and
operational data, including the status and alarm data normally transmitted
to the central station shall be stored for later transmission to the
central station. Storage for the latest 1024 events shall be provided at
each local processor. Each local processor shall accept software
downloaded from the central station.
2.6.1.3
Failure Mode
Upon failure for any reason, each local processor shall perform an orderly
shutdown and force all local processor outputs to a predetermined (failure
mode) state, consistent with the failure modes shown and the associated
control device.
2.6.2
Functions
The Contractor shall provide all software necessary to accomplish the
following functions, as appropriate, fully implemented and operational,
within each local processor.
a.
Monitoring of inputs.
b.
Control of outputs.
c.
Reporting of alarms automatically to central station.
d.
Reporting of sensor and output status to central station upon
request.
e.
Maintenance of real time, updated by the central station at least
once a day.
f.
Communication with the central station.
g.
Execution of local processor resident programs.
h.
Diagnostics.
i.
Download and upload data to and from the central station.
2.7
WIRE AND CABLE
2.7.1
General
The Contractor shall provide all wire and cable not indicated as Government
furnished equipment. All wiring shall meet NFPA 70 standards.
2.7.2
Above Ground Sensor Wiring
Sensor wiring shall be 20 AWG minimum, twisted and shielded, 2, 3, 4, or 6
pairs to match hardware. Multiconductor wire shall have an outer jacket of
PVC.
SECTION 13721A
Page 32
Previous Page
