Incite Fire Sigma-XT User manual

Installation and
Operations Manual
Sigma-XT
Australia Version 1 – February 2013
Fire Alarm and
Extinguishant System
Warning Signs
24V Switched Input Type

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Index Page
Table of Contents
1 Overview.................................................................................................................................................... 3
2 Installation................................................................................................................................................. 3
3 Cabling ....................................................................................................................................................... 4
4 Operation................................................................................................................................................... 5
5 Connections for Inputs .............................................................................................................................. 6
6 Connections for Outputs ........................................................................................................................... 6
7 External sounder........................................................................................................................................ 7
8 Configuration switch.................................................................................................................................. 8
9 Technical specification............................................................................................................................... 8

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1Overview
The conventional 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 if required.
The two levels may be activated either by a common and two switched signals or by application of a DC
supply which reverses polarity to signal level 2.
The signs are suitable for Fire, Extinguishing, 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 in 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 and should have tails of sufficient length to reach the required terminals.
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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4Operation
NOTE: Jumper J1 must ALWAYS be in position B for correct operation.
Connecting the + supply to the COMM+ terminal and the – supply to the LEV1 terminal will illuminate the
upper half of the sign as shown below.
Connecting the + supply to the COMM+ terminal and the – supply to the LEV2 terminal will illuminate both
halves of the sign of the sign as shown below.
Connecting - and + to the 2-WIRE I/P will illuminate the upper half of the sign as shown below.
Connecting + and - to the 2-WIRE I/P will illuminate both halves of the sign as shown below.
Level 1 input operated
Level 2 input operated

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5Connections for Inputs
Connect 15 to 30 Volt DC supply as shown.
If the internal buzzer is enabled then it can be
silenced by an external, normally open volt free
contact momentarily connected to the terminals
marked SILENCE.
6Connections for Outputs
The terminals for activating the warning sign are
duplicated on the right hand side of the circuit board for
the connection of further signs on the same circuit if
required.
COMM+
LEV1 LEV2
2 WIRE SILENCE
I/P
+
LEV1 -VE
LEV2 -VE
+ -
MOMENTARY
SILENCE INPUT
- +
= LEV 1
= LEV 2
TO NEXT SIGN ON CIRCUIT
COMM+
LEV1
LEV2
2 WIRE SOUNDER
I/P
+
LEV1 -VE
LEV2 -VE
+ -
- + = LEV 1
= LEV 2
+ -
- + = LEV 1
= LEV 2
SOUNDER
OUTPUT

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7External sounder
There are an additional two terminals which can be used for connecting to an external sounder.
The sounder can be a conventional, polarised type or a two tone sounder with a voltage reversing input to
signal the two different levels of activation. This sounder output will also silence when the SILENCE input is
operated.
The voltage that appears at the sounder output will be the same voltage as the input voltage used to
activate the warning sign. Sounder current will be sourced by the input that activates the warning sign so
this must be taken into consideration when calculating the rating of the circuit that supplies power for the
warning sign.
CONNECTION TO 2-WIRE BIPOLAR SOUNDER FOR
DIFFERENT SOUNDS ON LEVEL 1 AND LEVEL 2
CONNECTION TO 2-WIRE POLARISED SOUNDER
WHICH SOUNDS ON LEVEL 2 ONLY
COMM+
LEV1 LEV2
2 WIRE SOUNDER
I/P
+
LEV1 -VE
LEV2 -VE
+ -
- +
= LEV 1
= LEV 2
+ -
- +
= LEV 1 = LEV 2
2 WIRE
BIPOLAR
SOUNDER
- +
COMM+
LEV1 LEV2
2 WIRE SOUNDER
I/P
+
LEV1 -VE
LEV2 -VE
+ -
- +
= LEV 1
= LEV 2
+-
- +
= LEV 1 = LEV 2
POLARISED
SOUNDER
- +

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8Configuration switch
The configuration switch allows the sign to be configured to suit the application and provides the facility to
choose:
1 2 3 4 5
LEV 1 FLASH
LEV 2 FLASH
SINGLE/DUAL
ENABLE BUZZER
ENABLE SILENCE
Level 1 will be lit continuously with switch in ON position
Level 2 will be lit continuously with switch in ON position
Both halves will be lit regardless of the input with this switch ON
Buzzer is enabled with switch in the ON position
Silence input is enabled with switch in the ON position
9Technical specification
Size
300mm X 195mm X 50mm
Construction
1.2mm filly welded sheet steel
IP Rating
IP50
Finish
Epoxy powder coated
Colour (lid and box)
BS00 A 05 grey fine texture
Operating voltage
15V to 30V DC
Current consumption
130 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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