Det-Tronics Eagle Quantum 95-8470-05, Инструкция по эксплуатации

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It is recommended that each detector be thoroughly
tested at the programmed arc rejection setting within
the ambient conditions that will be present during
normal operation. This will help to ensure that the
selected arc rejection setting is proper for the
application.
STANDARD MODE
In the standard processing mode, the UV sensor output
(measured in counts per second) is compared to the
fire threshold (the “sensitivity” setting as described
below). If the radiant energy level from the fire exceeds
the selected alarm threshold level, the time delay
begins (if a time delay is selected). If the radiant energy
level from the fire remains above the selected sensitivity
level for the duration of the time delay, a fire alarm
signal is generated. In every application, it is crucial to
ensure that the radiant energy level from the expected
fire at the required distance from the detector will
exceed the selected sensitivity level.
Standard signal processing is recommended for
controlled indoor applications only.
Sensitivity
Whether Arc Rejection or Standard mode is selected,
the sensitivity setting must always be programmed. The
selected sensitivity level determines the fire alarm
threshold setpoint. The higher the sensitivity level, the
greater the detection range, but the possibility of false
alarms will be increased. Four sensitivity levels are
selectable. (Sensitivity levels for UV and IR are selected
separately.)
The sensitivity setting must be appropriate for the
anticipated fire size at the required distance from the
detector. Refer to the “Specifications” section of this
manual for additional information.
Time Delay
A time delay from 0 to 7 seconds is selectable.
STANDARD MODE
A fire output is generated only if the fire signal exceeds
the sensitivity setting for the entire duration of the
programmed time delay.
ARC REJECTION MODE
If the fire signal meets the programmed arc rejection
requirements, the time delay begins. A fire output is
generated if the fire signal continues for the duration of
the time delay.
Automatic or Manual oi
The EQ2200UVIR is equipped with the Optical Integrity
(
oi ) feature. The oi test is performed on both the UV
and IR sensors to check the cleanliness of the detector
optics, as well as the proper functioning of the sensors
and electronic components of the detector. If a
problem should occur, it is quickly detected.
The detector is user programmable (from a PC running
Det-Tronics configuration software) for automatic
oi
testing. If automatic testing is selected, the oi test is
automatically performed on each sensor. The rate for
the UV sensor test is once per minute. The rate for the
IR sensor is field selectable from once a minute to once
every four hours. If a fault is detected, a trouble signal
is sent to the LCU over the LON/SLC. A fault condition
is indicated at the logic controller and the gateway and
also by the LEDs on the detector’s UV sensor. The
automatic
oi test does not generate an alarm output or
interfere with normal detector operation.
The manual oi test is initiated using a button on the
point display screen at the OIS. A successful test is
signaled by the OIS. The manual
oi test can be used in
addition to automatic oi to verify correct detector
operation.
NOTE
The manual oi test does not generate an alarm
output or actuate any system outputs.
Fire Output Latching
When latching operation is selected, the fire alarm
signal is present until cleared by a reset command from
the PC.
EQ2200DCU AND EQ2200DCUEX
DIGITAL COMMUNICATION UNIT
DESCRIPTION
The EQ2200 Series Digital Communication Unit (DCU)
digitizes a 4 to 20 ma analog signal and transmits the
value as the process variable portion of its Standard
Periodic Report (SPR) to the Communication Gateway
located in the LCU. All circuitry is housed in a single
explosion-proof/watertight enclosure for use in the area
of detection.
Designed for use with the Eagle Quantum system, the
DCU provides a unique technique for detecting and
isolating opens or shorts in the Local Operating
Network/Signaling Line Circuit (LON/SLC) wiring. This
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