Operating Conditions - Honeywell NOTIFIER UDS-3 User Manual, Installing And Operating Manual

Operating conditions

Pre-activated unit condition
In presence of an activation signal on one of the two inputs zone 1 and zone 2 (for control panel connection)
or for pre-activation signal coming from analog loop. UDS-3 shows this condition by:

active buzzer

"extinguishing active" led blinking

Pre-alarm output active

Pre-activation indication both in the main screen and in the INFO screen (accessible via F2 key for
zone 1 and F3 for zone 2) that show zone related events.
Activated unit condition
In presence of an activation signal from both alarm 1 and alarm 2 inputs on the terminal board for conventional
control panel connection, or from pre-alarm and alarm signals coming from loop, or from signal coming from
manual activation input.
This condition is shown by UDS-3 through:

Buzzer activation

"extinguishing active" led ON

Pre-alarm output active

Pilot bottle/directional valve output active

Input activation display on extinguishing information screen (INFO accessible with F2 key for zone 1 or F3
key for zone 2) in which zone events are shown.

UDS-3 goes into "pre-discharge warning" or into discharge phase depending on the fact that pre-release
time was set or not.
Pre-release warning event
UDS-3 shows this condition through:

Countdown display showing remaining seconds before extinguishing output activation

Pulsing sounder output (0.5 sec OFF and 0.5sec ON)
Active emergency extension input condition
In this situation, whether extinguishing procedure was activated, UDS-3 doesn't enter into release zone until
the input signal doesn't get back to standby condition.
Emergency extension state is signalled by UDS-3 through:

"Emergency extension" led ON.

"Emergency extension" output active.

Active indication in the extinguishing information screen. If UDS-3 was not in standby state, but was
in activation state, emergency extension would also be signalled with pulsing sounder output (output
remains 0.5s OFF, 1s ON). If pre-release time was programmed, for each deactivation on the
"emergency extension" output that time would be reset.
Emergency interruption output active condition (Abort)
If present during standby or activation condition (in case of pre-release) UDS-3 can not activate
extinguishing output, that is it can't get into release state (only pre-alarm output and directional valves are
activated).
This condition is indicated by:

"Emergency interruption" led ON.

Buzzer activation

"Extinguishing interruption" output active

Indication on extinguishing information screen ("INFO", F2 and F3 function keys) that extinguishing
block has been activated

ALT label blinking on display's main screen with red backlight.
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NOTIFIER ITALIA
Installation and operating manual
Doc. M-205.1-UDS3N-ENG Rev A.1
UDS-3
UDS-3_manu