Atest Gaz Alpa EcoDet XT, Руководство пользователя

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9.2.2.1 Star layout of detectors
Figure 11: Connection of gas detectors Alpa EcoDet XT according to the star layout
Only the S1 terminal is used.
The configuration switch of gas detectors must be always set to the OST position (the last
/most distant detector). See details in Section 7.
Install interconnecting cables on the facilities leaving sufficient spare length for connection of
detectors.
Install a control unit and supply power voltage to it. Upon power up the control unit should report
the status FAILURE (AWARIA) since no detectors are connected to it. Switch power voltage for the
control unit off.
Fix the detector on the facility area to support structures.
Connect the input port of the first detector to an interconnecting cable leading to a control unit.
Set the configuration switch of the detector to the ‘OST’ position (the last detector in a chain)
– see Figure 11.
Connect the interconnecting cable between the detector and a control unit to appropriate port
(channel) of a control unit. Upon power up the control unit should report the status of OPERATION
(PRACA) and indicator LEDs on the user interface panel of the detector should flash one after
another during the time period of one minute (warm up and stabilization of the detector). Upon
expiration of that time period the ‘OK’ indicator on the detector interface panel should go on.
If the control unit still reports the status FAILURE (AWARIA), the connection is incorrect and
possible connection errors must be identified and remedied.
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User Manual: POD-043-ENG R03
Unused terminal S2
CONTROL UNIT