Atest Gaz Alpa EcoTerm XT, User Manual

Page: 12 / 40

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Status of indicator LEDs Status of the
detector
operation
Status of
interconnections
check
Meaning
Failure Failure Detector damage
The detector also indicates an interruption
of electric interconnections or incorrect
values of electric current (see details is
Section 8)
Table 3: Indication of operating conditions
When the detector works properly it is possible to view historical events associated with exceeding of
warning /alarm thresholds or detector failures.
The way how historical events are indicated by means of front panel LEDs for the light intensity switch SW3
set to position 1 (LED – strong) is explained in Table 5.
State of the indicators Stored state
Warning 1
Warning 2
Alarm
Failure
Table 4: Signalling archive status (SW3 in position 1)
The way how historical events are indicated by means of front panel LEDs for the light intensity switch SW3
set to position 2 (LED – weak) is explained in Table 5.
State of the indicators Stored state
Warning 1
Warning 2
Alarm
Failure
Table 5: Signalling archive status (SW3 in position 2)
The detector memory is automatically erased after 72 from the moment when the recorded
event takes place or after the power voltage for the detector is off during at least 10
seconds.
6 System architectures
Detectors can be connected in two ways:
star system (traditional) or,
into a serial "bus" arrangement (alarm loop) – open or closed.
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User Manual: POD-044-ENG R01
Y Y Y Y Y Y Y Y
R R R G G G G G G
R G G G G G G
R R G G G G G G
Y G G G G G G
G G
YR R R
G G
YR
G G
YR YR
G G
Y