f. Whenever a fault is detected by the built-in fault diagnostics in a NC
Subsystem, the fault type and location data shall be displayed on the
master station video monitor and forwarded to the maintenance workstation.
2.2.16
Main Terminal/Equipment Panels
a. Panel cabinets shall be surface mount units with knockouts and a hinged
door with keyed lock. Each panel cabinet shall be plainly and permanently
labeled with the identification of the function served.
b. Any of the logic or programming features specified below for the main
terminal/equipment panel may be provided as part of the master station if
this is the standard product design of the system.
c. Equipment shall provide control, switching, logic, memory, programming,
timing, signaling, voice intercom, power and interconnection circuitry as
required for the patient care areas served. All functions may be
implemented through hardware and/or software.
d. Equipment shall be of modular construction with all components as
plug-in modules. Equipment components may be housed in one or more
cabinets.
e. System shall operate at or below 30V level, with overload and
electronic short circuit protection for primary and secondary circuits.
f. Interruption or loss of ac line power, or the failure of a power supply
shall not cause loss of any stored programs that control operation or user
programmed features, and any call registered prior to loss of power. When
power is restored, all normal operations shall continue and all registered
calls and associated signals automatically restored.
g. A standby power supply shall automatically provide at least 15 minutes
of full load uninterrupted power within 4 milliseconds of an ac power
failure. Batteries used in the standby power supply shall be maintenance
free, completely sealed, and continuously recharged during normal
operation. Power calculations shall be included with the design data
submittal to verify power requirements.
h. Electronic supervision circuitry shall activate a failure alarm call in
the event of a station or line failure, power supply failure, total NC
Subsystem failure, and any LAN interface failure. Other diagnostic
circuitry that is a standard part of the installed system shall be
provided. The failure alarm call shall be communicated to a master station
connected to the panel, and to the maintenance station.
i. LAN network interface circuitry, software and ports as required to
communicate data/information for the central code annunciation functions,
call logging functions, maintenance functions, information system interface
functions, radio page interface functions, and wireless phone interface
functions.
j.
Failure diagnostic circuitry for remote failure diagnosis.
k. Equipped capacity for each patient care area shall provide for at least
a 25 percent expansion in the installed quantity of call points in the
patient care area, with a minimum of four expansion call points, whichever
is greater. These call points shall include all patient stations, staff
stations, duty stations and any other type of call station that operates
SECTION 16731A
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