Incite Fire Sigma-XT User manual

Installation and
Operations Manual
Sigma-XT
Australia Version 1 – October 2011
Fire Alarm and
Extinguishant System
Warning Signs
Serial Communications Type

Warning Sign Manual - Serial.docx Page 2 of 8
Index Page
Table of Contents
1 Overview.................................................................................................................................................... 3
2 Installation ................................................................................................................................................. 3
3 Cabling ....................................................................................................................................................... 4
4 Configuration............................................................................................................................................. 5
4.1 485 Serial Connected......................................................................................................................... 5
4.1.1 Functions ................................................................................................................................... 5
4.1.2 Addressing ................................................................................................................................. 5
4.2 All Signs.............................................................................................................................................. 5
5 Connections............................................................................................................................................... 6
5.1 485 Serial Connected......................................................................................................................... 6
5.2 NON 485 Serial Connected ................................................................................................................ 7
6 Technical specification............................................................................................................................... 8

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1Overview
The illuminated warning signs provide a clear, visual and audible warning for a variety of applications.
Standard units are available to provide warning of a fire alarm or extinguishant release but the display may
be customised to show any text on several coloured backgrounds.
Warning signs have two levels of operation in which the top and bottom halves of the sign may be split to
show an initial warning and then additional text for a reinforced warning, or if required both halves can be
activated at once.
The two levels may be activated either by a common and two switched signals, or by the Serial 485 bus
from the Sigma XT control panel.
Up to 7 devices can be mixed along with status units and ancillary boards when utilising the serial bus. The
serial bus connected units require a 4 core connection comprising 24V DC supply and the communications
bus.
The signs are suitable for Fire, Extinguishant, Security and any other type of alarm system, and have a wide
operating voltage from 15 to 30 Volts DC making them suitable for a wide range of applications.
The use of high brightness, white LED indicators minimises power consumption and maximises reliability.
2Installation
Remove the front plate and use the back box as a template to mark the three fixings in the required position
on the mounting surface. The back box must be fixed level and in all three mounting positions on a flat
surface using bolts or screws with a minimum diameter of 4mm.

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3Cabling
The back box has two 20mm knockouts in the top, bottom and back and one 20mm knockout tin each side.
Knockouts can be removed by sharply tapping them and when loose, pushing them back and forth until they
break off.
The maximum size of cable that the terminals will accommodate is 2.5mm2.Cables should be connected
using suitable cable glands, should have tails of sufficient length to reach the required terminals, and should
be wired according to the relevant standards, including AS3000
Do not install cables across the front surface of the circuit board as this will impair the light output of the
unit, and the shadows generated by the cables will be clearly visible when the sign is lit.
CORRECT WIRING
INCORRECT WIRING

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4Configuration
The warning sign can be configured to illuminate in a variety of signals from the serial bus by setting the DIP
switch. Separate DIP switches are provided for the top and bottom sections of the warning sign.
4.1 485 Serial Connected
4.1.1 Functions
FIRE The sign will illuminate on a fire signal.
MANUAL MODE The extinguishant system has been places in Manual
mode
MANUAL RELEASE The manual release on the extinguishant system has
been activated
DISABLE A section of the fire or the extinguishant system has
been disabled
RELEASED The extinguishant has been released.
2ND STAGE ALARM The ECU has received a second fire alarm and is in
second stage of releasing extinguishant
HOLD The hold input in the risk has been activated
SYS INOP A part of the extinguishant system or the fire alarm has
been disabled or is in fault, including activation of the
hold or abort inputs, placing the ECU in manual mode, or
a comms fault on the ECU. The sign will also illuminate
on loss of 485 communications.
4.1.2 Addressing
ADDRESS The address is set in binary notation on the 4 way DIL
switch.
4.2 All Signs
NOT USED Bit 4 of the DIL switch is not used.
BUZZ The warning sign buzzer will sound when the nominated
section of the warning sign activates.
STEADY The nominated section of the warning sign will come on
steady when activated, otherwise it will flash.

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5Connections
5.1 485 Serial Connected
Note: Only 3 warning signs are to be permitted to be connected to the 24V “Status Power” output on the
Sigma XT panel. Should more than 3 signs be required, they must be powered from the 24V supply
protected via a separate inline fuse.
Up to 3 additional “clean contact” type signs may be installed from the trigger terminals of each 485
connected sign, in which case the sign must be powered directly from the 24V supply. See Section 5.2
RS485
IN OUT
+ - + -
24V
DC
IN OUT
+ - + -
FROM EXTINGUISHANT CARD ON PANEL
OR PREVIOUS WARNING SIGN
OR PREVIOUS STATUS UNIT
TO NEXT WARNING SIGN
OR STATUS UNIT
24V -
24V +
RS485 -
RS485 +
24V -
24V +
RS485 -
RS485 +
WARNING SIGN CONNECTION
DIAGRAM
All connections for field wiring are to rows of terminals along the top of the circuit board, and should be
wired according to the relevant standards, including AS3000. Shielded cable should be used for the 485
comms with the shield securely bonded to the cabinet.It is permissible to use shielded 4 core fire alarm
cable. The resistance of any core of any cable must not exceed 2.5 ohms.
Wiring should enter the enclosure and be formed tidily to the appropriate terminals which are capable of
accepting wires of up to 2.5mm2.Wiring must never pass across the front of the circuit board. If cable
entries need to be in positions other than at the knockouts provided, wiring must be fed well away from the
surface of the circuit board.

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5.2 NON 485 Serial Connected
When 485 communications is not used, wiring must be terminated to 24V Trigger terminals.
Note: This connection is not suitable for the System Inoperative sign which will illuminate on loss of 485
communications.
IN OUT
+ 1 2 + 1 2
24V
TRIGGER
FROM EXTINGUISHANT PANEL
OR PREVIOUS WARNING SIGN
+24V
0V
LVL1 CONTACT
LVL2 CONTACT
TO NEXT WARNING SIGN
2
1
+
WARNING SIGN
TRIGGER INPUT CONNECTIONS
Warning signs may be wired in series with the proviso that fire control panel end of the cabling run should
be connected to the IN and the next warning sign should be connected to the OUT.
Connecting the + supply to the + terminal and the – supply to the 1 terminal will illuminate the lower half of
the sign as shown below.
Connecting the + supply to the + terminal and the – supply to the 2 terminal will illuminate the upper half of
the sign as shown below.
Connecting the + supply to the + terminal and the – supply to both 1 the 2 terminals will illuminate both
halves of the sign as shown below.
Up to 3 additional signs may be installed from the trigger terminals of each 485 connected sign, in which
case the sign must be powered directly from the 24V supply. See Section 5.1

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#2 input operated
#1 input operated
#1 and #2 inputs operated
6Technical specification
Size
300mm X 195mm X 50mm
Construction
1.2mm filly welded sheet steel
IP Rating
IP40
Finish
Epoxy powder coated
Colour (lid and box)
BS00 A 05 grey fine texture
Operating voltage
15V to 30V DC
Current consumption
35 milliamps Quiescent
140 milliamps at 24V DC (both halves of sign lit and buzzer sounding)
Operating temperature
-5 to + 50 degrees C
Operating humidity
To 95% non-condensing
Sounder output
Maximum current limited by circuit that supplies the warning sign with
power.

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