SILENT KNIGHT 4821 Manuel d'installation Page 66

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Model 4821/4820 Control/Communicator Installation Manual
4-22 150964
4.15.4 Zone Configuration Examples
The chart below shows some commonly used zone hardware configurations and provides
examples of how you might want to program the zone for the disarmed and armed responses.
UL zones must be end-of-line supervised.
State of Zone
Programmed
Disarmed Response
Programmed
Armed Response
Open Circuit
Contact open or open hard-
ware fault.
Ready Ready
EOL Circuit
(This state is not possible
for this example, but you
still must program a sys-
tem response for this con-
figuration.)
Not Ready Alarm
Short Circuit
Contact closed or shorted
hardware fault.
Not Ready Alarm
Open Circuit
Contact open or open hard-
ware fault.
Not Ready Alarm
EOL Circuit
(This state is not possible
for this example, but you
still must program a sys-
tem response for this con-
figuration.)
Not Ready Alarm
Short Circuit
Contact closed or shorted
hardware fault.
Ready Ready
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