6
2.5
The device has two basic alarm loop types: “Intrusion” and “Fire.”
A device with
intrusion
alarm loops monitors loop resistance using rigid “Normal” and “Violation”
values. A “Failure” alarm loop state is not recognized.
A device with
fire
alarm loops monitors loop resistance using rigid “Normal,” “Violation,” “Failure,”
and “Warning” values.
Device alarm loops may contain:
detectors and control unit NO/NC output circuits of
“dry-contact”-type;
fire-type detectors, supplied with power by the alarm loop and capable of operating at supply
voltages of 14
–21 V.
2.6
The device outputs alarm notifications to the CSP even if power to the device is completely
turned off.
2.7
The device can control external elements using programmable
relay outputs and OC out-
puts.
2.8
At supply voltages below 10 V, the device will enter “Sleep” mode, with minimum current
consumption. In “Sleep” mode, the device turns off all outputs and does not monitor alarm loop state.
Exit from “Sleep” mode occurs upon recovery of supply voltage, which also recovers alarm loop state.
2.9
The device has a two-color indication of alarm loop and power circuit state.
2.10
The device is protected against overloads and malfunctions in alarm loop circuits.