Honeywell NOTIFIER UDS-3 User Manual

PAGE - 8 Installation and operating manual UDS-3
NOTIFIER ITALIA Doc. M-205.1-UDS3N-ENG Rev A.1 UDS-3_manu
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For each input in the terminal board, the following “activation window” is valid. The only exception is for
Flowmeter and Manostat inputs that can have the alarm window instead of the stand-by one (for NA or NC
inputs) depending on the program.
All inputs are balanced with an end-line 2,7K-1/4W resistor.
ALARM 1 AND ALARM 2 INPUTS
Balanced inputs.
Terminal board inputs for conventional control panels connection.
An input activation brings UDS-3 in “pre-activated” condition; if this signal disappears, the panel gets back into
stand-by mode.
A further activation signal, present on another input, brings UDS-3 into “activation mode”.
MANUAL EXTINGUISHING ACTIVATION INPUT
Balanced input.
Terminal board input for connection with a manual activation push-button (Rapid Discharge) of extinguishing
system.
If activated for 3 seconds it brings UDS-3 into “active mode”.
EMERGENCY DELAY INPUT
Balanced input.
Terminal board input for connection with an optional mechanical device that can delay release, while active.
ONLY MANUAL EXTINGUISHING INPUT
Balanced input.
Terminal board input for connection with an optional key switch to allow UDS-3 to pass from “Automatic” to
“Manual” mode.
EMERGENCY STOP INPUT
Balanced input.
Terminal board input for connection with an optional ABORT button; its activation, before release begins, blocks
discharge.
MANOSTAT INPUT
Balanced input.
Terminal board input for connection with the output of a Manostat, for extinguishing control.
Activation of this input during release phase means that extinguishing cycle was ok.
Its activation during stand-by instead, brings UDS-3 into fault condition “Low pressure” for “Extinguisher loss”.
FLOWMETER INPUT
Balanced input.
Terminal board input for connection with the output of a Flowmeter, for extinguishing control. This input can be
disabled from programming menu.
If activated during standby condition, it means that extinguishing system has not been activated by UDS-3 but by
an external device (it can be due to a manual activation of the rapid flux valve). This brings UDS-3 into “release
mode”. Instead if UDS-3, after analysing input activation signals, gets into release status, this input is used to
manager extinguishing cycle.

Honeywell NOTIFIER UDS-3 Specifications

General

Brand	Honeywell
Model	NOTIFIER UDS-3
Category	Measuring Instruments
Language	English