36
Model TA502A
5.2.4 Environmental
Specifications
Operating Temperature Range:
0°F to +150°F (-18°C to +66°C)
Storage Temperature Range:
-40°F to +150°F (-40°C to +66°C)
Operating Humidity Range:
5 % to 100 % Relative Humidity
Non-condensing
5.2.5 Engineering
Specifications
5.2.5.1 Zero Two System
Each system shall utilize modules capable of monitoring gas sensing elements or a 0
to 21.7 mA analog signal from field detection transmitters. The system chassis shall
be available in 2, 4, 8 or 16 channels. Each chassis shall contain a bus for the
following independent signals: A1 Alarm, A2 Alarm, Fault, Master Reset, Master
Accept, Unaccept, CAL, +24Vdc, and System Common. Module signals shall be
capable of being bussed from one chassis to another, so that up to 100 modules can
comprise a single system. The detection modules shall be electrically and physically
compatible and capable of being used in the same chassis to form combined fire and
gas detection systems. The system shall consist of Zero Two Series component
modules as manufactured by General Monitors, Lake Forest, California, U.S.A. or
General Monitors, Galway, Ireland.
5.2.5.2 TA502A Trip Amplifier Module
The trip amplifier module has an interface panel, a mode/select switch, and the
following indications:
•
2 discrete alarm threshold level indicators
•
Fault or malfunction indicator
•
Ready
indicator
•
Calibration mode indicator
•
Setup mode indicator and
•
3-digit LED display
All alarm parameters and user options are software selectable. A power on self-test
(POST) automatically is performed each time the trip amplifier module is powered-up.
A functional card test and a front panel LED test are switch capable without
interrupting normal on-line services.
The trip amplifier module is capable of insertion and removal during power ‘on’
conditions without damage to any component module in the system. The trip amplifier
module generates display codes associated with fault conditions whenever a fault or
malfunction occurs. A mode/select switch provides the operator with front panel
access to a setup check mode, a setup mode, and an inhibit mode. The trip amplifier
module has a password protected setup routine capable of having the password
disabled.