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Programming Example 3
Four combustible gas sensor/transmitters are installed, operating and calibrated. The transmitter outputs
are connected to channels 1 through 4 on a QuadScan II. Security/Password will not be used. Remote
relays will be connected to a QuadScan II instrument. It becomes necessary due to false alarms that a
Zone configuration should be applied to the system. The inputs from any 2 of the 4 sensor/transmitters that
create a high alarm condition will activate the remote relay Number 1, providing the necessary corrective
action. The first step is to establish the correct formula to achieve the required results. The following
diagram shows the detector relationship to establish this formula.
A1 & A2
D1
D2
D = Detector
1,2,3&4 = Channel
#
A1 & A4
A2 & A3
A2 & A4
D4
D3
A3 & A4
The programming formula derived is as follows:
(A1 & A2) (A2 &
A3) (A2 &A4) (A3 & A4) (A1 & A3) (A1 & A4)
The starting point to program the
system for Zoning is as follows:
Press the SETUP button.
0 % LEL
0 % LEL
0 % LEL
0 % LEL
1
* SETUP *
0 % LEL
0 % LEL
0 % LEL
2
Содержание QuadScan II 7400
Страница 10: ...5 of 116 Quick Start Programming Menu Tree...
Страница 20: ...15 of 116 Figure 5 Mounting Dimensions of Model 7400...
Страница 24: ...19 of 116 Figure 9 Battery Backup P N 096 0719 Outline Interconnection Wiring...
Страница 60: ...55 of 116 Figure 13 Interconnect Wiring Between 7400 Remote Relay Assembly...