Notifier Honeywell UDS-4N User manual

UDS-4N
Extinguishing unit

UDS-4N Installation and programming INDEX
UDS-4N_MANU-INST/PROG. Doc. M-203.1-UDS-4N-ENG Rev A.1 NOTIFIER ITALIA
INDEX
1 - GENERAL DESCRIPTION 1
2 - ELECTRICAL CHARACTERISTICS 2
2.1 –CLAMPS 3
2.2 - INPUTS DESCRIPTION 5
2.3 - OUTPUTS DESCRIPTION 7
2.3.1 - CNLC TERMINAL BLOCK OUTPUTS 7
2.3.2 - OUTPUTS ON CNO TERMINAL BLOCK 8
3 - INTERFACE TO ANALOGUE EXCHANGES 8
2.1 - FUNCTIONAL DESCRIPTION OF ANALOGUE MODULES 8
4 - FRONT PANEL CONTROLS AND SIGNALS 9
4.1 - CONTROL KEYS 10
4.2 - REPORTS 12
4.3 - OPERATING CONDITIONS 14
5 - UDS-4N PROGRAMMING AND TESTING 18
5.1 - PROGRAMMING MENU - LOOP SETTING 18
5.2 - PROGRAMMING MENU - PASSWORD 19
5.3 - CONFIGURATION MENU (CONF) 19
5.4 - CONFIGURATION MENU - POWER OFF 19
5.5 - CONFIGURATION MENU –DELAYS 20
5.6 - CONFIGURATION MENU - DELAYS/UNLOADING DELAYS 20
5.7 - CONFIGURATION MENU - DELAY/RESET DELAY 20
5.8 - CONFIGURATION MENU - ACTIVATION MODE 20
5.9 - UTILITY MENU (UTIL) 21
5.10 - UTILITY MENU –DATE AND TIME/ DATE 21
5.11 - UTILITIES MENU - DATE AND TIME/TIME 22
5.12 - UTILITIES MENU - HISTORICAL ARCHIVE 22
5.13 - UTILITIES MENU - HISTORICAL ARCHIVE / VISUALIZATION 22
5.14 - UTILITIES MENU - HISTORICAL ARCHIVE 22
5.15 - UTILITIES MENU - HISTORICAL ARCHIVE / DISABLE 22
5.16 - UTILITIES MENU - HISTORICAL ARCHIVE 22
5.17 - UTILITY MENU - PLANT DATA VERSION 23
5.18 - UTILITY MENU - FIRMWARE UPGRADE 23
5.19 - UTILITY MENU - TOUCH SCREEN CALIBRATION 23
5.20 - TEST MENU (TEST) 23
6 - IMPORTANT OPERATING INFORMATION 24
7 - UDS-4N PANEL WALL MOUNTING INSTRUCTIONS 26
7.1 - CONNECTION DIAGRAMS FOR CNL TERMINAL BLOCK INPUTS 28
7.2 - CONNECTION DIAGRAMS FOR CNIN TERMINAL BLOCK INPUTS 29
7.3 - CONNECTION DIAGRAMS FOR CNLC TERMINAL BLOCK OUTPUTS 30
7.4 - POSSIBLE CONNECTION DIAGRAMS FOR SOLENOIDS ON THE "OFF" OUTPUT 31
7.5 - POSSIBLE CONNECTION DIAGRAMS ON THE "SIREN" OUTPUT 31
7.6 - POSSIBLE CONNECTION DIAGRAMS FOR THE "PRE-ALARM" OUTPUT 31
7.7 - POSSIBLE CONNECTION DIAGRAMS FOR "EXTINGUISHING SYSTEM IN LOCKOUT" OUTPUT 32
7.8 - POSSIBLE CONNECTION DIAGRAMS FOR "PILOT CYLINDER/DIRECTIONAL VALVE" OUTPUT 32
7.9 - WIRING DIAGRAMS FOR CN0 TERMINAL BLOCK OUTPUTS 33
8 - START-UP 36

UDS-4 Installation and user manual PAGE - 1
UDS-4_manu M--203.1-UDS4N-ENG Rev A.1 NOTIFIER ITALIA
UDS-4N
1- GENERAL DESCRIPTION
UDS-4N is a self-contained peripheral unit that can directly control any CO2, inert gas or halogenated hydrocarbon
extinguishing system.
The UDS-4N shutdown management panel includes a discharge management circuit in compliance with UNI EN
12094-1.
The UDS-4N unit is in a plastic container, equipped with a 7" colour touch display for easy viewing of the system status
and protected by passwords at various levels for programming and local management of the shutdown system.
Compatible with all NOTIFIER control panels on the market:
•conventional fire stations
•analogue fire panels
UDS-4N CAN BE ACTIVATED BY:
•conventional control panels: two inputs are provided to define the pre-activation and activation condition.
•analogue control panels by connection to the Loop, to activate the shutdown and to report alarm and fault
conditions directly to the control panel;
•manually by button connected to the relevant manual activation input of UDS-4N.
UDS-4N is protected against overvoltage, short circuits and electrostatic discharge.
USER INTERFACE:
•mandatory light indications by means of LEDs.
•indications on a 7" colour touch display, relating to pre-activation, activation, release, fault conditions. These
indications can be accessed at any time.
•instant display on the 7" colour touch display of the countdown to the pre-discharge time (which is
programmable).
•display of the extinguishing agent release condition in progress, with corresponding display of the inscription on
the 7" colour touch display.
•Keyboard access to system and zone information.
•graphic menu for programming/configuration.
•Menu items are protected by (changeable) passwords level 3A, 3, 2 (according to EN54.2).

PAGE - 2 Installation and operating manual UDS-4
NOTIFIER ITALIA Doc. M--203.1-UDS4N-ENG Rev A. 1 UDS-4_manu
2 - ELECTRICAL CHARACTERISTICS
Environmental conditions
•Operating temperature: - 5° C / + 40° C.
•Operating relative humidity: Max 95% non-condensing
•Storage temperature: - 10° C / + 50° C.
Panel power supply UDS-4N
The control unit is powered by the mains voltage and, in the event of a mains failure, continues to operate normally
thanks to the rechargeable batteries contained in the control unit itself. The characteristics required for the mains voltage
are:
•Voltage: 110/230Vac +15% -15%.
•Frequency: 50 / 60 Hz.
•Power consumption: max 2.3A
•Protection fuse F2 5x20 vertical (F2AL)
N.B.: Particular attention must be paid when the installation is located near powerful electromagnetic sources
(e.g. repeaters, radio links, motors, etc.).
Power supply
The power supply unit has the following outputs:
•Nominal 28.80Vdc,2.60 A (Regulated power supply for user output, external load power supply)
Charger section
•Output voltage = Nominal 27.50 Vdc (min 26.50Vdc max 28.50Vdc) ripple max 500mVpp
•Output current = 0.54 A (temperature compensation with external probe)
•Plug-in and compatible batteries = 2 x 12V with nominal capacity at 20 hours Max 12Ah
The battery charger section has the following signalling thresholds:
- Low battery threshold = 21.5Vdc measured on batteries. If in Idle, the warning of impending trip is given
approximately 30 minutes before execution. If in Alarm, the warning is given approximately 10 minutes before.
- Recharge imbalance threshold = 3.4 Vdc voltage difference between the two batteries.
- Battery release threshold = 19.5Vdc in the absence of mains voltage and measured on the battery array.
- Absorption at rest from battery in absence of 230 Vac mains voltage:
Unit at rest with display off: 116mA
Unit at rest with display on: 136mA
Unit in alarm with display on: 272mA
The UDS-4N checks the internal resistance of the batteries. The maximum internal resistance of the batteries is 600
ohms. This value, placed in series with the batteries, generates a fault within 4 hours.
N.B. FOR CONNECTION TO THE DEVICES, USE THE CABLE SPECIFIED IN UNI 9795 STANDARDS.

UDS-4 Installation and user manual PAGE - 3
UDS-4_manu M--203.1-UDS4N-ENG Rev A.1 NOTIFIER ITALIA
Dimensions
Earthing system
The earthing system must be made in accordance with CEI and ISPELS standards and must in any case have a
resistance of less than 10 Ohm (measured at the well with the utilities disconnected). Connection of the earth cable to
the control unit is compulsory and must be made on terminal block CN1.
Degree of protection
IP30
Weight
5 Kg
2.1 - Terminal blocks
CN1
Num
Name
Description
1
Phase
F
Mains power supply 230Vac +15% -15% 50/60Hz
Protection towards electronics with 5x20 vertical fuse F2AL (F1)
2
Earth
PE
3
Neutral
N
CNL
Num
Name
Description
1
LA-
Loop A -
Analogue loop input with isolator
2
LA+
Loop A +
3
LB-
Loop B -
4
LB+
Loop B +
CNSE
Num
Name
Description
1
Lin+
Non-isolated serial line 485
2
GND
3
Lin-
Note: All dimensions in the
figure are in millimetres.

PAGE - 4 Installation and operating manual UDS-4
NOTIFIER ITALIA Doc. M--203.1-UDS4N-ENG Rev A. 1 UDS-4_manu
CNSE
Num
Name
Description
4
Not used
CNBAT
Num
Name
Description
1
B1+
BATT+
Batteries 2 x 12Vdc Max 12Ah, connected in series, with balance
control (B1- connected, via resettable fuse, to B2+)
2
B1-
Fuse
3
B2+
Sense
4
B2-
GND
CNO
Num
Name
Relay / Jumper
Description
1
GST NA-NC
RL2 / J2
General fault
30V 2A NA-NC selectable via J2
2
GST C
3
RILAS NA-NC
RL3 / J3
Release in progress
30V 2A NO-NC selectable via J3
4
RILAS C
5
PROLE NA-NC
RL4/ J4
Active emergency extension
30V 2A NO-NC selectable via J4
6
PROLE C
7
MANU NA-NC
RL5 / J5
Manual shutdown only active
30V 2A NO-NC selectable via J5
8
MANU C
9
INTEM NA-NC
RL6 / J6
Emergency stop activated
30V 2A NO-NC selectable via J6
10
INTEM C
11
SCAR NA-NC
RL1 / J1
Download event
30V 2A NO-NC selectable via J1
12
SCAR C
CNLC terminal block
Num
Name
Notes/Rel
ays
Description
1
+24 USR
User power supply
Protection by 0.9A electronic resettable fuse
2
GNDP USR
3
PREALL-
LC at
rest
RL9
Pre-alarm device [R=2.7kΩ 1%].
30V 2A Protection with 0.9A electronic resettable fuse
4
PREALL+
5
ALLAR-
LC at
rest
RL10
Siren / Alarm device [R=2.7kΩ1%].
30V 2A Protection with 0.9A electronic resettable fuse
6
ALLAR+
7
BLOCK-
LC at
rest
RL11
Extinguishing system fault / Exclusions [R=2.7kΩ1%].
30V 2A Protection with 0.9A electronic resettable fuse
8
LOCK+
9
PILOT-
LC at
rest
RL8
Pilot cylinder / Directional valve [R=2.7kΩ1%].
30V 2A Protection with 0.9A electronic resettable fuse
10
PILOT+
11
OFF-
LC at
rest
RL7
Power off [R=2.7kΩ1%].
30V 2A Protection with 0.9A electronic resettable fuse
12
POWER
OFF
N.B. :
The polarities shown in the tables refer to the "stand-by" condition of the UDS-4N panel.
All controlled outputs are protected by a 0.9A self-resetting fuse

UDS-4 Installation and user manual PAGE - 5
UDS-4_manu M--203.1-UDS4N-ENG Rev A.1 NOTIFIER ITALIA
CNIN
Num
Name
Notes/Relays
Description
1
INALL1
NA
Alarm 1 (from conventional control unit L1)
(controlled entry)
2
GND
3
INALL2
NA
Alarm 2 (from conventional control unit L2)
(controlled entry)
4
INATTM
NA,[NA|NC].
Device Manual Activation Power Off
(controlled entry)
5
GND
6
INPROLE
NA
Emergency Extension Device
(controlled entry)
7
INMANU
NA
Manual shutdown only
(controlled entry)
8
GND
9
ININTEM
NA
Emergency Interruption Device
(controlled entry)
10
INPRESS
NA,[NA|NC].
Pressure switch
(controlled entry)
11
GND
12
INFLUSS
NA,[NA|NC].
Flow switch
(controlled entry)
2.2 - DESCRIPTION OF INPUTS
The following activation window applies to each input on the terminal board. The only exception is the three inputs flow
switch, pressure switch and manual activation, where it is possible, from the configuration menu (CONF button), to
exchange the rest window with the alarm window (for NC or NO type inputs).
In the default configuration, all inputs are balanced with a 5.4kΩnominal "End-of-Line" resistor, Rest value, obtained
from the series of two 2.7kΩresistors. An NO contact is applied to one of the two resistors at rest. The input is activated
when the contact is closed and the nominal resistance drops to 2.7kΩ, the Activation value.
A resistance drift control algorithm is applied to each input, and if the resistance value falls within the resistance ranges
L, M and H, an input level fault '... undetermined low', '... undetermined medium' and '... undetermined high' is provided.
Other faults that can be signalled by an input are: "short-circuited", "open" with obvious meaning, in addition diagnostics
in "fault" and "unstable". In the latter case it means that the input is constantly changing between states but does not
remain there long enough.
Short circuit
L
Activation
M
Rest
H
Cut
1K 1k2 3k8 4k2 6k5 7k
N.B. The maximum number of devices that can be connected to the line (manual override controls, emergency
override and emergency stop controls) depends on the distance from the unit and their power consumption.

PAGE - 6 Installation and operating manual UDS-4
NOTIFIER ITALIA Doc. M--203.1-UDS4N-ENG Rev A. 1 UDS-4_manu
ALARM 1 AND ALARM 2 INPUTS
Specially controlled balanced inputs.
Terminal board inputs for connection to conventional control panels.
Activation of a single input puts the UDS-4N in the "pre-activated condition"; if the signalling does not persist, the panel
returns to the stand-by state.
Simultaneous activation of both inputs puts the UDS-4N into the "activated condition".
MANUAL ACTIVATION INPUT SWITCH-OFF
Balanced input with special control: NO, [NO, NC].
Terminal board input for connection of a device (push button) for manual activation (Quick Discharge) of the switch-off.
When activated, the UDS-4N enters the "activated condition".
This input can be excluded from the exclusion menu.
EMERGENCY EXTENSION ENTRANCE
Balanced input.
Terminal board input for connection of a possible mechanical device to delay the release of the extinguishing agent as
long as it is active. The "Emergency prolongation" status is self-restoring.
MANUAL SWITCH-OFF INPUT ONLY
Balanced input.
Terminal block input for connection of a key switch, if required, to enable the UDS-4N to switch between 'Automatic'
and 'Manual Only' operating modes.
EMERGENCY STOP INPUT
Balanced input.
Terminal board input for connection of an emergency interruption device (Abort); its activation, before the
extinguishing agent release condition is reached, inhibits the discharge of the extinguishing agent. The "Emergency
Abort" status is not self-restoring.
PRESSURE SWITCH INPUT
Balanced input: NO, [NO, NC].
Terminal board input to which an output from a pressure switch can be connected for shutdown control.
Activation of this input during the extinguishing release condition signals that the extinguishing cycle has been
successfully completed.
Activation of the UDS-4N in the resting condition, however, brings the UDS-4N into the "Low Pressure" fault condition
for "Agent Loss". In this condition the shutdown cycle is not inhibited.
FLOW SWITCH INPUT
Balanced input with special control, NO, [NO, NC] and configurable enable.
Terminal board input to which an output from a flow switch can be connected for shutdown control. Its management
can be disabled from the configuration menu (CONF button).
Activation of this input signals that the extinguishing release condition is in effect.
If activated during the resting condition it means that the extinguishing was not initiated by the UDS-4N but by an
external action (could be due to manual activation of the fast flow valve). This feedback puts the UDS-4N into the
"extinguishing release condition".
This input is used to manage the shutdown cycle, when the UDS-4N goes into the "extinguishing release condition,
following the interpretation of the signals from the activation inputs.

UDS-4 Installation and user manual PAGE - 7
UDS-4_manu M--203.1-UDS4N-ENG Rev A.1 NOTIFIER ITALIA
2.3 - DESCRIPTION OF OUTPUTS
The following operating window applies to each of the outputs controlled in the terminal block.
An algorithm for resistance drift control is applied to each output and if the resistance value falls within one of the
resistance ranges L or H a 'low indeterminate' or 'high indeterminate' output level fault is provided.
Other faults that can be signalled by an output are: "short-circuited", "open" with obvious meaning, also "diagnostics in
fault", for outputs with a diagnostic circuit, and "unstable". In the latter case it means that the output resistance is
constantly changing between states and does not remain there long enough.
Short circuit
L
Rest
H
Cut
200 400 4k 5k
2.3.1 - CNLC TERMINAL BLOCK OUTPUTS
Output for pre-alarm device
This is a controlled output with a 2.7kΩ"Fine-Line" resistor - 5%-1/4W.
This output can be excluded from the exclusion menu.
N.B. When the PRE-ALARM output is activated, the polarities at the ends of the respective terminals are
reversed.
Siren/alarm device output
This is a controlled output with a 2.7kΩ"Fine-Line" resistor - 5%-1/4W.
This output can be excluded from the exclusion menu.
N.B. When the SIREN output is activated, the polarities at the ends of the respective terminals are reversed.
Extinguishing system fault output (unit in lockout) / active exclusions
This is a controlled output with a 2.7kΩ"Fine-Line" resistor - 5%-1/4W.
This output is activated if:
1) the pressure switch input is activated, before the shutdown output or the flow switch input is activated, and, in
this case, the UDS-4N panel goes into the "agent leakage fault condition" and signals the fault with the "Agent
leakage" event;
2) An exclusion has been activated from the exclusion menu; the UDS-4N is in the "out-of-service condition".
N.B. When the OUTPUT / EXHAUST SYSTEM ANOMALY output is activated, the polarities at the ends of the
respective terminals are reversed.
Outlet for pilot cylinder / directional valve
This is a special controlled output with a 2.7kΩ"Fine-Line" resistor - 5%-1/4W.
This output is activated when UDS-4N enters the "activated condition", i.e. when UDS-4N
one of the following situations arises:
1) the simultaneous presence of alarm 1 and alarm 2 signals from the inputs on the terminal board;
2) the simultaneous presence of alarm 1 and alarm 2 signals from loops;
3) activation of the input for the manual switch-off device.
This output remains active until the end of the switch-off cycle.
This output can be excluded from the exclusion menu.
N.B. When the PILOT BOMB / DIRECTIONAL VALVE output is activated, the polarities at the ends of the
respective terminals are reversed.
Shutdown output
This is a special controlled output with a 2.7kΩ"Fine-Line" resistor - 5%-1/4W.
This output is managed in the "release condition".
This output can be excluded from the exclusion menu.
N.B. When the SLEEP output is activated, the polarities at the ends of the respective terminals are reversed.

PAGE - 8 Installation and operating manual UDS-4
NOTIFIER ITALIA Doc. M--203.1-UDS4N-ENG Rev A. 1 UDS-4_manu
2.3.2 - Outputs on CNO terminal block
General fault output
Uncontrolled relay output with NO-NC changeover contact selectable via jumper (J2).
This output signals the presence of any "fault condition".
Output not suitable for connection of a fault-transmitting device.
Release in progress
Uncontrolled relay output with NO-NC changeover contact selectable via jumper (J3).
This output is active as soon as the UDS-4N enters the "release condition" and will remain active until the reset
command is executed.
Output not suitable for connection of an alarm transmission device.
Emergency extension output active
Uncontrolled relay output with NO-NC changeover contact selectable via jumper (J4).
This output is activated as soon as the UDS-4N enters the "emergency prolongation condition" and remains active
until the "emergency prolongation" input returns to the normal condition.
Manual-only shutdown output active
Uncontrolled relay output with NO-NC changeover contact selectable via jumper (J5).
This output is activated when the UDS-4N enters the "manual only mode condition".
Emergency stop output activated
Uncontrolled relay output with NO-NC changeover contact selectable via jumper (J6).
This output is activated when the UDS-4N enters the 'emergency shutdown condition' .
Discharged output
Uncontrolled relay output with NO-NC selection via (J1).
This output is activated at the end of the shutdown cycle only if the release is successful (pressure switch and/or flow
switch input active) and indicates that the extinguishing agent has been discharged.
3 - INTERFACE TO THE ANALOGUE PANELS
The UDS-4N has an analogue loop input for analogue control panel signalling. The extinguishing zone to the analogue
fire panel is emulated with 2 output modules and 4 input modules. The CNL terminal block is dedicated to the analogue
loop input for commands and signalling.
3.1 - Functional description of analogue modules
–2 output modules (in the fire panel to be programmed as TYPE-ID = UDS1).
These outputs for the fire panel are inputs for the UDS-4N and are dedicated to the activation ofthe extinguishing
cycle. Like the conventional inputs (ALL1 and ALL2), when both are activated (CMX/1 and CMX/2), they allow
the UDS-4N to be placed in the activated condition.
A fault on conventional inputs does not block the functionality of these inputs.
–4 MMX/1÷4 input modules (in the fire alarm control panel programmed as TYPE-ID = UDS2) for signalling
faults of the UDS-4N to the analogue control panel.
N.B: these six modules have consecutive addresses and only the following addresses are possible:
–10-15, 20-25, 30-35, ..., 90-95, for CLIP module emulation;
–10-15, ..., 90-95, 100-105, 110-15, ..., 150-155, for ADVANCED module emulation.

UDS-4 Installation and user manual PAGE - 9
UDS-4_manu M--203.1-UDS4N-ENG Rev A.1 NOTIFIER ITALIA
Faults are sent to the analogue control unit in this way (each module sends a generic Open Circuit Fault message
which is interpreted by the analogue control unit):
Module
Notes
Interpreted report
CMX-1
Only if MMX-3 is excluded
UDS-4N is disabled or in manual mode.
CMX-2
Only if MMX-4 is excluded
No 230Vac mains supply or power supply (Vpp) from power
supply unit/battery outside the range of 21-29Vdc.
MMX-1
General fault of UDS-4N.
MMX-2
Shutdown line failure.
MMX-3
Only if MMX-3 is included
UDS-4N disabled or in manual mode.
MMX-4
Only if MMX-4 is included
No 230Vac mains supply or power supply (Vpp) from power
supply unit/battery outside the range of 21-29Vdc.
Programming of analogue control units for correct interpretation of signals from and to the UDS-4N:
Address
Type ID
Dir.
Activation status
Interpreted report
<n>+0
UDS1
out
on
"ALL1"
<n>+1
UDS1
out
on
"ALL2"
<n>+2
UDS2
at
gst-open
"GEN_FAULT".
<n>+3
UDS2
at
gst-open
"EXT_FAULT".
<n>+4
UDS2
at
gst-open
"AUT_DIS"
<n>+5
UDS2
at
gst-open
"POW_FAULT".
Where <n> represents the base address of the group of consecutive addresses, i.e.: 10, 20, 30, ..., 90, 100, ...,
150.
The analogue control unit uses the ON/OFF status of the outputs to signal the activation or non-activation of
the ALL1 and ALL2 alarms, while the UDS-4N uses the open circuit fault status on the inputs of the analogue
control unit, to signal its faults: GEN_FAULT, EXT_FAULT, AUT_DIS and POW_FAULT.
4 - FRONT PANEL CONTROLS AND SIGNALS
Commands are given via the interface on the 7" colour touch display.

PAGE - 10 Installation and operating manual UDS-4
NOTIFIER ITALIA Doc. M--203.1-UDS4N-ENG Rev A. 1 UDS-4_manu
4.1 - Control Keys
The list of commands that can be given via buttons:
- End flooding
- Exclusion
- Buzzer mute
- Muting / Resetting sirens
- Reset
are described in detail below:
Access Level 2 Allows the "Shutdown" output to be disabled only if the UDS-4N is in the
Extinguishing Release Condition and the shutdown output is active, otherwise the button is
inactive. If the shutdown cycle requires the output to reactivate, the output will reactivate, the
buzzer will sound, and the button will be re-enabled. The Release in Progress LED does not go
out because it indicates a condition in which the extinguishing agent has been released at least
once.
Access levels 1 / 2
By pressing the "Exclusion" button, a menu appears with two items: "View" (access level 1) and
"Edit" (access level 2), which contain the same list of devices, but only in the second case can
exclusion be activated/deactivated.
The list of devices that can be excluded is as follows:
–manual activation input;
–shutdown output (*);
–pre-alarm output;
–pilot cylinder outlet / directional valve;
–siren/alarm output (*);
–all (*): equals to having selected all previous exclusions.
(*) See "Out of service condition" for details.
The presence of at least one exclusion results in the following activations:
1) the Exclusion LED on the front panel lights up;
2) activation of the Extinguishing Fault / Exclusions output;
3) displaying the list of excluded devices in the Exclusions menu.
The possibility of modifying the exclusions is precluded when the UDS-4N is in the "Activated condition" with the
exception of the state reached when the siren output or the shutdown output are excluded and any pre-discharge delay
has ended. In this last state, by re-enabling both the siren output and the switch-off output, the pre-set pre-discharge
delay resumes (UNI EN 12094-1:2004, par. 4.15.3).
Access level 1 Enables silencing of buzzer sounds. The buzzer signal is activated under the
following conditions:
1) when the pre-activation condition occurs, either from the terminal block or from the loop. The buzzer is
automatically muted if the cause of the pre-activation disappears, returning the UDS-4N to its resting state;
2) when the activation condition occurs;
3) on the occurrence of the release condition, if this is given by the reception of the activation command from the
flow switch input;
4) each time the switch-off output is reactivated;
5) on the occurrence of any fault condition;
6) when the emergency extension condition occurs;
7) when the emergency stop input is activated.

UDS-4 Installation and user manual PAGE - 11
UDS-4_manu M--203.1-UDS4N-ENG Rev A.1 NOTIFIER ITALIA
Access Level 2. Allows to silence the siren output after the generation of the Release Condition.
If the siren output has been silenced, it is possible to reset it by pressing the button again and
always with the same access level. This behaviour applies also in case of a fault (open circuit or
short circuit). In case the siren output is excluded, this command has no effect.
Following the silencing of the siren output, the button is coloured yellow to indicate this. After manually silencing the
siren, the siren can be reset automatically if the shutdown phases so require and the button colouring is restored.
Access Level 2 .
Allows the restoration of fault, activation and release conditions.
There is a constraint on the ability to perform a Reset: when the UDS is in the Trigger Condition
and subsequent Conditions, the Reset is inhibited for a time, in minutes, equal to that set in the
"CONF -> Delays -> Reset Delay" parameter.
The countdown is not suspended when the emergency extension input is activated.

PAGE - 12 Installation and operating manual UDS-4
NOTIFIER ITALIA Doc. M--203.1-UDS4N-ENG Rev A. 1 UDS-4_manu
4.2 - Alerts
LED signalling on the front panel
The description of the LEDs is summarised in the following table:
Name
Colour
Description Screen printing
ACTIVE SHUTDOWN
Red
Flashing light when only one input is in alarm (Pre-Activation Condition).
Steadily lit when two inputs are in alarm (Trigger Condition).
RELEASE IN PROGRESS
Red
Steadily lit when the switch-off output has activated at least once, or following a
signal from the flow switch. (Extinguishing Release Condition).
EXCLUSION
Yellow
Permanently lit when there is at least one exclusion on the panel. Exclusions are
only carried out from the "EXCLUSIONS" menu.
MANUAL MODE ONLY
Yellow
Steadily lit when the "Manual power off only" input is active, or the activation
mode in the CONF menu is set to "Manual only".
AGENT LOSS
Yellow
Permanently lit when the pressure switch input is active before the "Release in
progress" condition is reached.
EMERGENCY EXTENSION
Yellow
Steadily lit when the corresponding input is active.
EMERGENCY INTERRUPTION
Yellow
Steadily lit when the corresponding input has been activated.
GENERAL FAULT
Yellow
Flashing when a fault occurs on the power supply, inputs, relay outputs or if dip-
switch SW1-4 (enabling programming of the UDS-4N) is in the ON position.
Steadily lit when all faults have been acknowledged.
SYSTEM FAULT
Yellow
Permanently lit when there is at least one system fault (watch-dog intervention,
memory content error, etc.).
SHUTDOWN FAULT
Yellow
Flashing light when one of the following inputs is in the fault condition:
- ALL1, ALL2, Manual Activation Shutdown, Emergency Prolongation, Manual
Only, Emergency Interruption, Pressure Switch, Flow Switch.
Or when one of the following outputs is in the fault condition:
- Pre-alarm, Siren, System fault Extinction / Exclusions, Pilot Cylinder, Shutdown.
Or when the pressure switch input is activated before the Release in Progress
condition.
Steadily lit when, in the presence of the previous faults, the "Buzzer silencing"
key is pressed.
VOLTAGE PRESENT
Green
Permanently lit when the control unit is powered (by mains voltage, 230V or
battery).

UDS-4 Installation and user manual PAGE - 13
UDS-4_manu M--203.1-UDS4N-ENG Rev A.1 NOTIFIER ITALIA
LED signalling on the circuit board
The description of the LEDs is summarised in the following table:
Indication
Colour
Description
Led
Power supply present
Green
Presence of power supply to the control unit.
LD1
Card fault
Yellow
Fault of any kind related to the board.
LD13
Dispersion
Yellow
Indicates a ground fault.
LD14
USB OK
Green
indicates correct operation on the USB port.
LD15
USB KO
Red
indicates incorrect operation on the USB port.
LD16
Loop Module Failure
Yellow
Fault status of the Loop Module section.
LD20
Loop Module Alarm
Red
Alarm status of the Loop Module section.
LD21
Com. Side B Loop Module
Yellow
Communication status Side B of the Loop Module.
LD22
Com. Side A Module Loop
Yellow
Communication status Side A of the Loop Module
LD22
RS485 communication
Yellow
transmission activity on RS485.
LD24
Yellow
reception activity on RS485.
LD25
Dip-Switch and JDSPE settings
Dip-1, 2, 3 and 4 = OFF: normal operation.
Dip-1, 2, 3 and 4 = ON: configuration import from USB key.
Dip-1 = ON: configuration export to USB stick;
Dip-4 = ON: firmware update.
JDSPE - A ground fault can be ignored by removing the JDSP jumper.
Other Dip positions are for the use of the manufacturer.

PAGE - 14 Installation and operating manual UDS-4
NOTIFIER ITALIA Doc. M--203.1-UDS4N-ENG Rev A. 1 UDS-4_manu
4.3 - Operating conditions
The following describes the operating conditions that the UDS-4N may encounter.
Stand-by condition
The normal condition is the condition in which there are no faults and no alarm signals are active.
Pre-activated unit condition
Occurs in the presence of an activation signal in one of the two connection inputs to conventional control panels or by
the pre-activation signal from an analogue loop.
This condition is signalled to the UDS-4N by:
–active buzzer;
–active shutdown" led flashing;
–pre-alarm output active;
–indication, in the "SWITCH OFF" screen, of the event related to the change to the "Pre-activated unit condition"
by means of the messages "Pre-activation from conventional input", or "Pre-activation from loop", or both
messages simultaneously.
Unit condition activated
It occurs in the presence of an activation signal from both alarm 1 and alarm 2 inputs in the terminal block for connection
to conventional control panels, or from the two alarm signals coming from the loop, or from signal coming from manual
activation input.
This condition is signalled by the UDS-4N by means of:
–active buzzer;
–active shutdown" led on;
–pre-alarm output active;
–pilot cylinder outlet / directional valve active;
–indication, in the "Switch off" screen, of the event concerning the change to "Unit condition activated", by one of
the following messages "Activation from conventional input" or "Activation from Loop";
–Switching of the UDS-4N to 'Pre-discharge warning condition', by means of the message 'Pre-discharge period',
followed by 'Discharge condition', by means of the message 'Switch output off' depending on whether or not the
pre-discharge warning time has been set.
In this condition, a timer is activated that inhibits the possibility of performing the Reset for a time, in minutes, equal to
that set in the "CONF -> Delays -> Reset Delay" parameter.
In this condition, if at least one of the siren or shutdown outputs is excluded, at the end of any pre-release period the
UDS-4N does not switch to the "Discharge condition". Only if both exclusions are removed, the UDS restarts counting
from the beginning of the "Pre-release period" and at the end switches to the "Discharge condition" (UNI EN 12094-
1:2004, par. 4.15.3).
Pre-discharge warning condition
This condition is signalled by the UDS-4N by means of:
–the display shows the countdown indicating the seconds remaining before the switch-off outputs are activated;
–intermittent activation of the siren/alarm output (0.5s in OFF and 0.5s in ON).

UDS-4 Installation and user manual PAGE - 15
UDS-4_manu M--203.1-UDS4N-ENG Rev A.1 NOTIFIER ITALIA
Condition with emergency extension input active (Door open)
In this situation, if the procedure generating the shutdown has been activated, the UDS-4N does not enter the release
phase until the "emergency extension" input signal returns to the rest condition.
The emergency prolongation condition is signalled in the UDS-4N by:
–active buzzer;
–emergency extension" led on;
–emergency extension" output active;
If this input is activated during the pre-discharge warning condition, it also occurs:
–intermittent activation of the siren/alarm output (0.5s in OFF and 1.0s in ON).
This state is self-restoring by returning the input to the home position.
Condition with emergency abort input active (Abort)
If present during the "Standby condition", the "Pre-activated condition", the "Pre-discharge warning condition", the
"Emergency extension condition", or the "Activated condition" with at least one of the siren output and the shutdown
output excluded, the UDS-4N cannot activate the shutdown output or go into the "Release condition".
As long as the "emergency interrupt" input remains active and a reset has not been performed, the UDS-4N remains in
the emergency interrupt condition.
This condition is indicated by:
–emergency interruption" led on;
–active buzzer;
–shutdown interruption" output active;
This state cannot be restored by returning the input to the home position.
The release can only be completed by manually acting on the extinguishing fluid valves to activate the flow switch inlet
and then the pressure switch inlet.
Release condition
The UDS-4N enters this condition if it has received a signal from the flow switch input or, if programmed, immediately
after the pre-release period.
In this condition, the UDS-4N activates the shutdown output, and manages the release cycle by controlling the flow
switch and pressure switch inputs.
This condition is indicated by:
–Release in progress" LED on;
–active buzzer and acoustic warning;
–activation "siren output" always ON;
–activation of 'release output in progress';
–indication in the 'Switch-off' screen of the event related to the 'Extinguishing release condition' by the text 'Switch-
off output drive'.

PAGE - 16 Installation and operating manual UDS-4
NOTIFIER ITALIA Doc. M--203.1-UDS4N-ENG Rev A. 1 UDS-4_manu
Shutdown fault condition
This condition occurs when there is a fault with one of the controlled inputs or outputs.
In the event of a fault, signalling takes place as follows:
–General fault" led flashing;
–blinking "shutdown fault" led;
–active buzzer;
–activation of 'general fault output';
–indication, in the "UDS fault" screen, of the event related to a fault with a detailed description.
–In the event of a fault in the "Emergency extension" or "Emergency interruption" inputs, these prevent the
extinguishing procedure.
–With the "pressure switch active" input, without the "release condition" being activated, the UDS-4N enters the
"agent leakage fault condition" and also signals the "agent leakage" fault. In this condition, the "Extinguishing
system fault/exclusion" output is also activated.
In the event of activation, with the above fault condition, it will always be possible to carry out the shutdown cycle.
Manual only mode condition
This condition can be achieved by an activation command in the "Manual only shutdown" input or by accessing the
"CONF" menu with access level 2.
In this condition, the UDS-4N handles only the signal coming from the "manual shutdown activation" input; any other pre-
activation/activation signals are ignored.
This mode is indicated by:
–LED "Manual mode only" lit;
–Manual-only switch-off' output active.
In 'Manual only mode', if the 'Manual shutdown activation' input fails, the shutdown output cannot be activated.
Out-of-service condition
This condition is given by the presence of at least one exclusion among the input/output signals associated with the
shutdown.
The following items can be excluded:
–manual activation input
implies that the activation of the shutdown phases is only possible from signals coming from the pre-alarm and alarm
input or from loops, any signalling of activation of the manual input is ignored, while any failure of the transmission
medium is signalled.
–pre-alarm output
implies that the pre-alarm output is not activated in case of "pre-activated condition".
–pilot cylinder outlet / directional valve
implies that the pilot cylinder/directional valve output is not operated in case of "activated condition".
–shutdown output
In this case, the 'release condition' cannot be achieved by the following input devices:
•Activation by terminal block inputs
•activation by analogue loop
•manual activation
In the case of a "condition triggered" by one of the above input devices, it occurs that:
•the switch-off output is not controlled;
•the current release output is not controlled;
•the siren output is controlled.
Only if an activation signal is present in the flow switch input, the UDS-4N will switch to the "release condition" [UNI EN
12094-1 4.15.1].

UDS-4 Installation and user manual PAGE - 17
UDS-4_manu M--203.1-UDS4N-ENG Rev A.1 NOTIFIER ITALIA
If the UDS-4N is already in the "activated condition" and the shutdown output is included, the shutdown output is only
activated after the pre-release time has elapsed, if this has been programmed in advance.
–siren/alarm output
this exclusion can be carried out by excluding the switch-off output.
The behaviour of the UDS in the case of an "activated condition" is similar to that described in the previous point.
–everything
This exclusion means that none of the INPUT / OUTPUT signals are managed.
The behaviour of the UDS in the case of an "activated condition" is similar to that described in the previous point.
The out-of-service signal is displayed by means of:
–Exclusion LED on;
–indication in the exclusion screen of the excluded items. The EXCLUSION button can be used to display (access
level 1) and edit (access level 2).
General fault conditions
This condition is caused by the presence of general faults, power supply faults, system faults or shutdown faults.
In the event of a general fault, signalling takes place as follows:
–General fault" led flashing;
–active buzzer;
–activation of "general fault output;
–indication, in the 'UDS fault' screen, of the event related to a 'fault <...>' and its details.
If the fault involves inputs or outputs related to the shutdown, the following LED will also be activated:
–failure to switch off" led flashing.
The flashing LEDs will be set to steady on and the buzzer will only go off when acknowledged by the "Buzzer silencing"
button; if a new fault occurs, the specific LEDs for that fault will start flashing again and the buzzer will be reactivated.
N.B.: In the event of a fault due to corruption of the program memory, the "System fault" LED will flash together with the
"General fault" LED and the "General fault" output will be activated, and the UDS-4N will go into a safety condition in
which it cannot perform any operations.

PAGE - 18 Installation and operating manual UDS-4
NOTIFIER ITALIA Doc. M--203.1-UDS4N-ENG Rev A. 1 UDS-4_manu
5 - PROGRAMMING AND TESTING UDS-4N
Programming is carried out via the following menus:
–PGRM: Programming
–CONF: Configuration
–UTIL: Utilities
–TEST: Test
Programming menu (PGRM)
Access level 3A (44444)
The following menus and items appear when the "Programming" menu is accessed:
•Loop setting
◦Address 00, [00, 10, ..., 150], step 10;
◦MMX-1 NO, [NO | YES];
◦MMX-2 NO, [NO | YES];
◦MMX-3 NO, [NO | YES];
◦MMX-4 NO, [NO | YES];
•Password
◦Password level 2 (default 22222)
◦Password level 3 (default 33333)
◦Level 3A password (default 44444)
5.1 - PROGRAMMING MENU \ Loop setting
◦Address 00, [00, 10, ..., 150], step 10;
the value set determines the programming of the starting address of the incorporated modules, in the
event that the UDS is connected to analogue control units; addresses from 10 to 150 can be assigned in
increments of 10. Values from 10 to 90 are associated with the CLIP or ADV protocol, while values from
100 to 150 are used only by the ADV protocol. The choice of the protocol used is always made by the
fire panel, with the constraint described above, i.e. that values from 100 to 150 are reserved for the
ADV protocol.
◦MMX-1, ..., 4 NO, [NO | YES];
Enabling/disabling of individual modules 1 to 4 for fault reporting to the fire alarm control panel.
N.B.: The use of these parameters is only possible by selecting an address from 10 to 90 in the
UDS and selecting the CLIP protocol in the fire alarm control panel.