Sigma XT+
Extinguishant Coincidence Unit
Operation and Maintenance Manual
Man-1111
Issue 18 May 2016
1. INTRODUCTION ................................................................................ 4 2. SAFETY ............................................................................................ 4 2.1. Static precautions ............................................................................................................................ 5 3.
4.
5.
6.
7.
8.
MOUNTING ....................................................................................... 5 TECHNICAL SPECIFICATION ............................................................... 6 FRONT PANEL LAYOUT ....................................................................... 8 REMOVING THE EQUIPMENT CHASSIS ................................................. 8 SYSTEM DIAGRAMS ........................................................................... 9 CONNECTING TO THE CIRCUIT BOARD................................................10 8.1. Sounder circuit wiring .................................................................................................................... 12 8.2. Connection to extinguishant output ............................................................................................... 13 8.2.1 Solenoid wiring............................................................................................. 13 8.2.2 Igniting actuator wiring ................................................................................. 13 8.3 Connecting to activation inputs ....................................................................................................... 14 8.4 Connecting to Sigma CP fire panel serial bus .................................................................................. 15 9. Setting up extinguishant monitoring circuit ...................................................................................... 16 10. AUX 24V DC SUPPLY OUTPUTS .........................................................16 11. CONNECTION TO RELAY CONTACTS ..................................................17 11.1
11.2
11.3
11.4
11.5
11.6
Fault relay ..................................................................................................................................... 17 1st stage alarm relay (on extinguishing modules) ......................................................................... 17 2nd stage alarm relay (on extinguishing modules) ....................................................................... 17 Released relay (on extinguishing modules) .................................................................................. 17 Aborted relay (on extinguishing modules) .................................................................................... 17 Extract relay (on extinguishing modules) ..................................................................................... 17 12. CONNECTION AND CONFIGURATION OF STATUS UNITS AND ANCILLARY
BOARDS .............................................................................................18 12.1 Adding new status units/ancillary boards ..................................................................................... 18 12.2 Removing status units or ancillary boards .................................................................................... 19 13. WIRING TO STATUS UNITS AND ANCILLARY BOARD ...........................20 14. CONFIGURATION ............................................................................21 14.1 Language selection ....................................................................................................................... 21 14.2 Extinguishant output mode ........................................................................................................... 21 14.3 Configuring the activation mode ................................................................................................... 21 14.5 Configuring the activation zones (Sigma CP panel connection only) ............................................. 21 14.6 Reset inhibit time .......................................................................................................................... 22 14.7 Pre-release delay time .................................................................................................................. 22 14.8 Extinguishant release time ............................................................................................................ 23 14.9 Second stage alarm pulsing/continuous ....................................................................................... 23 14.10 Released indication ..................................................................................................................... 23 14.11 Delay on manual release ............................................................................................................. 24 14.12 Release timer (infinite duration) ................................................................................................. 24 14.13 R0V not removed on reset ........................................................................................................... 24 14.14 Disable earth fault monitoring .................................................................................................... 24 14.15 Disable fault output .................................................................................................................... 25 14.16 Invert low pressure switch input ................................................................................................ 25 14.17 Extinguishant output monitoring levels ...................................................................................... 25 15. PANEL OPERATION – ACCESS LEVELS 1 AND 2 ...................................26 15.1 Normal condition ........................................................................................................................... 26 15.2 Access level 2 ................................................................................................................................ 26 15.2.1
15.2.2
15.2.3
15.2.4
15.2.5
15.2.6
15.2.7
Disable extinguishant release outputs. ...........................................................
Disable Manual release ................................................................................
Disable Stage 1 output ................................................................................
Disable Stage 2 output ................................................................................
Disable Released output ...............................................................................
Disable Extract output .................................................................................
Turn on Extract output.................................................................................
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 2 of 36
26 26 27 27 27 27 27 15.2.8 Select Reserve Solenoid Output (Configuration Option) .................................... 28 15.3 Single input activation .................................................................................................................. 28 15.4 Double input activation ................................................................................................................. 28 15.5 Reset ............................................................................................................................................. 28 15.6 Sounder fault ................................................................................................................................ 28 15.7 Power fault ................................................................................................................................... 29 15.8 System fault .................................................................................................................................. 29 15.9 Lamp test ...................................................................................................................................... 29 15.10 Hold condition ............................................................................................................................. 29 15.11 Released condition ...................................................................................................................... 29 15.12 Low pressure switch ................................................................................................................... 29 15.13 Manual only mode ....................................................................................................................... 29 15.14 Manual Release ........................................................................................................................... 29 15.15 Abort input .................................................................................................................................. 29 16. INTERNAL CONTROLS .....................................................................29 16.1
16.2
16.3
16.4
16.5
Watchdog reset ............................................................................................................................. 30 Processor reset ............................................................................................................................. 30 Terminate extinguishant ............................................................................................................... 30 Write enable switch ...................................................................................................................... 30 Address switch .............................................................................................................................. 30 17. INTERNAL INDICATIONS .................................................................31 17.1 Watchdog ...................................................................................................................................... 31 17.2 System fuse .................................................................................................................................. 31 17.3 Man. Release ................................................................................................................................. 31 18.
19.
20.
21.
POWER SUPPLY ..............................................................................31 MAINTENANCE ...............................................................................32 CE MARK .......................................................................................33 COMMISSIONING INSTRUCTIONS .....................................................34 Man-1111_SigmaXT+_Coincidence_Unit_18
Page 3 of 36
1. Introduction
The SIGMA XT+ Extinguishant Coincidence Unit is designed in accordance with European standard EN12094-1 Fixed
firefighting systems - Components for gas extinguishing systems - Part 1: Requirements and test methods for
electrical automatic control and delay devices.
The Sigma XT+ ECU is a self contained extinguishant release control unit that can receive activation signals at
supervised inputs via volt free contacts from other fire detection control panels or from addressable output modules.
It may also be connected to a Sigma CP fire panel serial bus and receive activation signals via this serial link.
ECUs have an integral, mains powered, EN54-4 compliant battery charger and power supply.
In addition to the requirements of EN12094-1 the ECU has the following facilities:
Delay of extinguishing signal of up to 60 seconds. EN12094-1 Section 4.17: (option with requirements).
Signal representing the flow of extinguishing agent to indicate the released condition. EN12094-1 Section 4.18:
(option with requirements).
Monitoring of the status of components by way of a low pressure switch input. EN12094-1 Section 4.19 : (option with
requirements).
Emergency hold device to enable the extinguishant delay time to be extended. EN12094-1 Section 4.20: (option with
requirements).
Control of flooding time to deactivate the releasing output after a set period of time. EN12094-1 Section 4.21:
(option with requirements).
Manual only mode to disable the release of extinguishant via automatic detection devices. EN12094-1 Section 4.23:
(option with requirements).
Triggering of equipment outside the system by way of first and second stage contacts, extract fan output etc.
EN12094-1 Section 4.26: (option with requirements).
Activation of alarm devices with different signals to indicate pre- discharge and released warnings using different
sounds. EN12094-1 Section 4.30: (option with requirements).
Emergency Abort device to inhibit the extinguishing signal until the emergency abort device has been de-activated
and the panel has been reset. EN12094-1 Section 4.27: (option with requirement).
2. Safety
Suppliers of articles for use at work are required under section 6 of the Health and Safety at Work act 1974 to ensure
as reasonably as is practical that the article will be safe and without risk to health when properly used.
An article is not regarded as properly used if it is used ‘without regard to any relevant information or advice’ relating
to its use made available by the supplier.
This product should be installed, commissioned and maintained by trained service personnel in accordance with the
following:
(i)
IEE regulations for electrical equipment in buildings
(ii)
Codes of practice
(iii)
Statutory requirements
(iv)
Any instructions specifically advised by the manufacturer
According to the provisions of the Act you are therefore requested to take such steps as are necessary to ensure that
you make any appropriate information about this product available to anyone concerned with its use.
This equipment is designed to operate from 230V 50Hz mains supplies and is of class 1 construction. As such it
must be connected to a protective earthing conductor in the fixed wiring of the installation and a readily accessible
double pole disconnect device meeting the requirements of EN60950/IEC950 which disconnects live and neutral
simultaneously shall be incorporated in the fixed wiring.
Switch disconnect devices such as MK Sentry 63A or similar are suitable for this.
Failure to ensure that all conductive accessible parts of this equipment are adequately bonded to the
protective earth will render the equipment unsafe.
This control panel is environmental class A and is designed for indoor use only at temperatures between -50C (+/- 3)
and +400C (+/- 2) and with a maximum relative humidity of 95%.
The IP rating for the enclosure is IP30.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 4 of 36
Operation outside of these limits may render the equipment unsafe.
2.1. Static precautions
Installation of the panel should be carried out by qualified personnel only. The electronic components within the
panel are vulnerable to physical damage and damage by electrostatic discharges.
It is advisable to wear a wrist strap designed to prevent the build-up of static charges within the body,
before handling any electronic circuit boards.
Never insert or remove boards or components with the power on.
3. Mounting
The ECU should be mounted on a dry, flat surface, at eye height to the display and in a level position such that the
enclosure is not distorted.
Screws or bolts of a minimum of 5mm diameter must be used to mount the enclosure in all three mounting positions.
It should be positioned in an accessible place as agreed with the end user.
Suitable fixings should be used at all fixing points such that the unit is securely mounted and is not liable to move
once fixed.
The ECU should not be mounted in another enclosure or near sources of excessive heat.
Cables should be connected using suitable cable glands fitted to the knockouts provided. If additional cable entry
points are required, all swarf and debris caused by drilling of additional cable entries must be cleared before power is
applied to the unit.
Cables should not be installed in the bottom of the enclosure. This space must be kept free for batteries.
The Sigma XT+ ECU uses the H2 size enclosure, which is 385mm W x 310mm H x 110 mm D and is sufficient to
house 7Ah batteries.
SIDE VIEW
FRONT VIEW
C2
C2
C2
5mm DIAMETER SCREWS
C2
FIX TO FLAT SURFACE USING SUITABLE WALL PLUGS
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 5 of 36
4. Technical specification
Table 1 - Electrical specifications
ITEM
ELECTRICAL RATING
Mains supply
230V AC, 50Hz +10% - 15% (100 Watts maximum)
Mains supply fuse
Power supply rating
Maximum ripple voltage
Battery type (Yuasa NP)
Maximum Battery Capacity within
Enclosure
F3A 250V TD 20mm
5A when battery charging is not required
1V
2 x 12 Volt sealed lead acid in series
Yuasa 7Ah
Battery charge voltage
Battery charge current
Imax a
Imax b
Ri max
Current draw in mains fail
condition
Maximum current draw from
batteries
Aux 24V output
1st and 2nd stage Sounder outputs
Fault relay contact rating
First stage contact rating
Second stage contact rating
Extract contact rating
Terminal capacity
Number of sounders per circuit
Monitored input end of line
Sounder circuit end of line
Extinguishant output end of line
No. of sounder circuits (2)
Extinguishant release outputs (2)
27.6VDC nominal (temperature compensated)
1.25A maximum
4A
5A
1R
60 milliamps quiescent – 107 milliamps full alarm
Extinguishant release delay
Extinguishant release duration
Cabling
Monitored inputs normal threshold
(Allowable EOL)
Monitored inputs alarm threshold
Monitored inputs Short circuit
threshold
Status unit/Ancillary board
connection
Status unit power output
COMMENT
Replace only with similar type
S406 power supply
Up to 26Ah batteries supported by power
supply (in mechanically coupled battery
cabinet)
Modulated DC
Modulated DC
7 Amps
With main power source disconnected
Fused at 500mA with electronic fuse
21 to 28V DC Fused at 1A with electronic fuse
5 to 30VDC 1A Amp maximum for each
5 to 30VDC 1A Amp maximum for each
5 to 30VDC 1A Amp maximum for each
5 to 30VDC 1A Amp maximum for each
0.5mm2 to 2.5mm2 solid or stranded wire
Dependent on type and current consumption
6K8 +/- 5% ½ Watt resistor
10K +/- 5% ¼ Watt resistor
1N4004 Diode
21 to 28V DC
21 to 28V DC. Fused at 1 Amp
200 milliamp maximum continuous load
1.0 Amp total load over all circuits
Maximum ratings not to be exceeded
Maximum ratings not to be exceeded
Maximum ratings not to be exceeded
Maximum ratings not to be exceeded
Adjustable 0 to 60 seconds (+/- 10%)
Adjustable 60 to 300 seconds
FP200 or equivalent (maximum capacitance 1uF max
inductance 1mH
10K ohm to 2K ohm
COMMUNICATION
PARAMETERS
Standard European mains
connection
See table 2 for sounder types
Supplied in terminals
Supplied in terminals
Supplied in terminals
1 x 1st stage and 1 x 2nd stage
1 Amp maximum load for 5 minutes
3A for 20 milliseconds
5 second steps
5 second steps
Metal cable glands must be used
Voltage reversing DC
Volt free changeover contact
Volt free changeover contact
Volt free changeover contact
Volt free changeover contact
Voltage reversing DC with
calibration facility
2K ohms to 150 ohms +/- 5%
140 ohms to 0 ohms +/- 5%
Two wire RS485 connection (EIA-485 specification)
Maximum of 7 units - RS485 data cable
21 to 28V DC, Fused at 500mA with electronic fuse
300 milliamp maximum load
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 6 of 36
(EIA-485 specification)
Table 2 - Compatible sounders
Model
BANSHEE
WAFER
FIRECRYER RANGE
KOBELL
Type
ELECTRONIC
ELECTRONIC
ELECTRONIC VOICE
MOTORISED
Manufacturer
VIMPEX
VIMPEX
VIMPEX
VIMPEX
ASKARI
ROSHNI
SQUASHNI
SYMPHONI
ELECTRONIC BELL
CFB BELLS
B6 AND B8 BELLS
ELECTRONIC
ELECTRONIC
ELECTRONIC
ELECTRONIC
ELECTRONIC
MOTORISED
SOLENOID
FULLEON
FULLEON
FULLEON
FULLEON
FULLEON
FULLEON
FULLEON
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 7 of 36
5. Front panel layout
6. Removing the equipment chassis
Open the control panel lid using the 801 lock key.
Before the chassis can be removed it will be necessary to disconnect the power cables from connector terminal
block on the left hand side of the PCB.
The chassis is held in place by two screws. Undo the two screws and lift the chassis gently away from the box
towards you.
With the chassis removed, there is much more room inside the panel for making off and dressing cables.
When cabling work is complete, the chassis can be re-fitted and the power cables re-connected.
IMPORTANT -Ensure that the power cables are connected correctly.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 8 of 36
7. System diagrams
2 WIRE RS 485 SERIAL
BUS
2 WIRE RS 485 SERIAL
BUS
ECU
SIGMA CP FIRE PANEL
UP TO 4
2 WIRE RS 485 SERIAL
BUS
ECU
2 WIRE RS 485 SERIAL
BUS
ECU
ECU
ECU CONNECTED TO SIGMA CP CONVENTIONAL FIRE PANEL RS
485 SERIAL BUS
ADDRESSABLE LOOP
ADDRESSABLE
OUTPUT
MODULE
ADDRESSABLE FIRE PANEL
ADDRESSABLE
OUTPUT
MODULE
ECU
ADDRESSABLE
OUTPUT
MODULE
ADDRESSABLE
OUTPUT
MODULE
ECU
ECU
ECU
ECU
ECU
ECU
ANY NUMBER OF ECU CONNECTED TO ADDRESSABLE FIRE PANEL VIA LOOP OUTPUT MODULES
CONVENTIONAL FIRE PANEL
ECU
ANY NUMBER OF ECU CONNECTED TO CONVENTIONAL FIRE PANEL WITH ZONAL VOLT FREE RELAY CONTACTS
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 9 of 36
8. Connecting to the circuit board
All connections for field wiring are to rows of terminals along the top and bottom of the circuit board.
Shielded fire alarm cable such as FP200 and metal cable glands must be used for all connections to the panel.
The shield of the cable must be bonded securely to the enclosure earth via a metal cable gland.
The resistance of any core of any cable must not exceed 25 ohms. The shield of the cable must be bonded
securely to the enclosure via the metal gland.
Wiring should enter the enclosure at the top or back of the panel using the knockouts provided and be formed
tidily to the appropriate terminals.
Terminals are capable of accepting wires of up to 2.5mm2.
Wiring must not go 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 behind and well away from the surface of the circuit board.
The space at the bottom of the enclosure is largely occupied by the standby batteries so this must be borne in
mind when considering cable entries.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 10 of 36
Terminal layout
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 11 of 36
8.1. Sounder circuit wiring
All sounders must be of the polarised type. If non-polarised sounders are used the control panel will permanently
show a fault condition. See table 2 for a list of compatible sounder types.
Sounder circuits are monitored for open and short circuit faults by placing a 10K 0.25W end of line monitoring
resistor across the last device on the circuit.
Sounder circuits must be wired as a single, radial circuit with no spurs or T junctions to enable the monitoring
circuit to work correctly.
Sounder circuit wiring through an MTL7778ac I.S. barrier
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 12 of 36
8.2. Connection to extinguishant output
The extinguishant output is capable of supplying up to 1 Amp for the maximum duration to a solenoid or 3 Amps
for 20 milliseconds to an igniting actuator or Metron.
The wiring for solenoids and igniting actuators is different as shown below. Igniting actuators of different types or
from different manufacturers should not be mixed on the same circuit.
8.2.1 Solenoid wiring
Solenoids must have a resistance of greater than 28 ohms to ensure that the maximum current rating of the
extinguishant output is not exceeded.
Solenoids should be fitted with a suppression diode to prevent EMF generated by the solenoid when it deenergises from upsetting the operation of the control panel.
Only polarised solenoids (i.e. solenoids fitted with an internal polarising diode) should be used.
Example of wiring a solenoid
8.2.2 Igniting actuator wiring
A maximum of four igniting actuators can be wired in series. If only one or two actuators are fitted, a 2R2, 2.5
Watt resistor must be wired in series with them to provide the correct monitoring resistance. The end of line diode
can be discarded when igniting actuators are used.
3 OR 4 ACTUATORS
WIRED IN SERIES
(MAXIMUM OF 4)
EXTING
+
M
M
M
M
1 OR 2 ACTUATORS
WIRED IN SERIES
EXTING
+
M
M
FIT 2R2 2.5W RESISTOR
IN SERIES WITH
ACTUATORS IF ONLY 1 OR
2 ACTUATORS ARE USED
-
To guarantee firing under all conditions, the total resistance of actuators, monitoring resistor and cable should not
exceed 7 ohms.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 13 of 36
8.3 Connecting to activation inputs
The ECU has two monitored activation inputs which can be used for activating the system.
Each input must have a 6K8 0.5W end of line resistor fitted (supplied in terminals) and be triggered by a 470R 1W
resistor.
Wire volt free contacts from conventional fire panels or addressable modules as show below.
Enable
Control
Mode
Select
EXTINGUISHANT
RELEASE
PULL DOWN - PUSH BUTTON
Act
I/ P1
Act
I/ P2
Man
rel
Hold
Abort
Mode
470R 1W
TRIGGER
RESISTOR
ACTIVATION INPUT 1 VOLT FREE
CONTACT FROM ADDRESSABLE MODULE
OR CONVENTIONAL FIRE PANEL
6K8 0.5W
END OF LINE
RESISTOR
470R 1W
TRIGGER
RESISTOR
ACTIVATION INPUT 2 VOLT FREE
CONTACT FROM ADDRESSABLE MODULE
OR CONVENTIONAL FIRE PANEL
6K8 0.5W
END OF LINE
RESISTOR
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 14 of 36
Rel
P. SW
Low
pressure
CIE serial
Status serial
Status
power
+ - + - + - + - + -
8.4 Connecting to Sigma CP fire panel serial bus
The ECU may be activated by selected zones from the serial bus of a Sigma CP conventional fire panel if required.
The zones that will activate the ECU are selected as described in section 14.3.
The terminals marked CIE SERIAL on the lower terminal block of the ECU should be connected to the terminals
marked RS485 on the Sigma CP fire panel.
It is important that the polarity is carefully observed and that + is connected to + and – is connected to –
The RS485 terminating jumper LK1 must be fitted to the last ECU on the serial bus. This jumper is fitted as
standard on all ECUs so will need to be removed from all ECUs except the last one connected to the RS485 bus.
To remove link LK1 from an ECU, undo the two screws holding the plate in place and lift the plate away from the
box. Locate LK1 as shown below and pull it off of the pins.
Refit the plate and screws.
C73
L32
C76
C74
U4
LK1
U3
C27
R54
L16
U12
R51
L15
C50 C49
Q16
R73
X3
C4
Q17
OPT1
D2
R12
C12
R110
R161
R160
R165
U8
R24
D1 C7
R11
R168
R74
R171
R170 R65
k
LED8
LED12
C29
U5
D27
TP32
TP34
C1
D26 R93
R94
D25
R91
R173
R172k
+
LK4
LK1
C16
R77
C11
Y1
D28
R92
R68 R70 C70
R167
k
C2
TP23
R177
R133 R163
C69
TP21 TP24
C19 C21
TP26
D9
D4
D17
D14 D13
D16
D15 D43
C72
C71
R35
R31
R34
R32
R175
R40
R30
R41
R33
R50 R48 R47 R42 R176
L6 L5
L4 L3
L2
L7
L14 L13 L11 L10 L44 L43 L9 L8
R89 R86
C46
C43 C42 C111C110 C41 C40 C39 C38 C37 C36 C35 C34
C47
C20
C18
R7 R6
R28
+
LK2
R169
R88
R159
R164
R162
R166
F3
U1
D11 D10
C25
C77
D29
C6
R8
R181
L33
k
D12
R29
C78
C79
+
U13
W3
C75
C83
+
TP28
TP36
TP3
R180
C80
U14
R1
C5
R179
L34
R182 C26
C81
+
C82
C31
R55
R22
R59
C28
C13
C3
R87 R90
C8
L1
X4
W4
C24
TP35
TP33
TP4
TP14
C9
LED10
U9
R20
C32
TP31
k LED11
U2
R150
R27
R71
C33
+
R144
R9
Q2
W1
Q32
R80
R5
R4
R3
R2
Q10
LED1k
R10
C23 R72
Q3
R26
R67
R23 R140
R69 R139
D41
D24
C30
W2
Q4
R25
TP1
LK3
C15
k
Q18
TP22 R66
R56
C14
R120 R118 LED3
TP7
R18 R44
TP5
R17 R43
R57
R58 R46
R21 R63
C17
D3
BZ1
Q23
R158
R157
R19
R143
D1058
ISS.01
k
Q24
R178
R96 R95
R98
Q19
k LED13
LED2
R111
C91
R119 LED5 TP17LED4
R61TP18 R60
C90
LED7
Q29
D41
R153
R138
Q30
k
F4
R134 R136
F7
k
R155
R148
R154 k
R113 R102
R105 R101
C85 C84
Q35
Q34
R142
C106 R147
LED6
R62
R64
C103 C107
REAR VIEW OF ECU CIRCUIT BOARD
+
U11
REMOVE LINK LK1 UNLESS THE ECU IS THE LAST ONE FITTED TO THE SIGMA CP PANEL RS485 BUS
2 WIRE RS485 SERIAL
BUS
ECU
SIGMA CP FIRE PANEL
Zone Chart
1
2
3
4
5
General System Status
Fire
Power On
2 WIRE RS485 SERIAL
BUS
2 WIRE RS485 SERIAL
BUS
ECU
2 WIRE RS485 SERIAL
BUS
ECU
ECU
Fire In Zone
Power Fault
Sounder Fault/
Disablement
Delay On
General Fault
Test Mode On
System Fault
General
Disablement
Alarm/Fault
Warning Silenced
1
2
3
4
Zone Fault/Test/Disablement
System Mode
Fire In Zone
5
6
7
8
Zone Fault/Test/Disablement
Enable Control
Mode
Enter
6
7
Silence/Sound Alarm/Fault
Alarm
Warning Silence
Reset
Lamp
Test
(+10)
Select
(+1)
8
REMOVE LINK LK1
REMOVE LINK LK1
REMOVE LINK LK1
Fire Alarm Control
Model: K11080
BS EN54-2 : 1998
BS EN54-4 : 1998
KM 73505
UP TO 4 ECU CONNECTED TO SIGMA CP CONVENTIONAL FIRE PANEL RS485 SERIAL BUS
Leave link LK1 fitted only to the last ECU connected to the RS485 serial bus.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 15 of 36
LEAVE LINK LK1 FITTED
9. Setting up extinguishant monitoring circuit
The extinguishing output circuit is factory set to monitor the end of line diode that is fitted to the terminals and
will normally show a value of around 270.
If the parameters of the extinguishant output change e.g. by connecting a solenoid in parallel with the monitoring
diode or removing the diode and fitting igniting actuators, then the extinguishing output monitoring level will need
to be “learnt”. See section 14.16 for details. To do this, operate the enable controls keyswitch to put the system
into access level 2.
The LCD will show:
Access level 2 ►
ENTER for Menu
Operate the WRITE ENABLE switch by gently sliding it to the right. The LCD will show:
AL3 Updates = xx
ENTER for Menu
Press the ENTER button and then the UP button repeatedly until the LCD displays:
Exting. O/P 1
Level = XXX
The XXX displayed here is the previous (factory) level to which the monitoring level had been set.
Press the ENTER button. The LCD will now show:
Exting. O/P 1
Level = XXX
?
The XXX shown here is the current monitoring level detected on the extinguishing output. Press the ENTER button
to learn the new monitoring level.
Press the UP button to set the monitoring level for output 2 in the same way if it is being used, otherwise switch
the write enable slide switch to the left (off) position and check that an open or short circuit fault on the
extinguishing output(s) is detected and shown on the control panel.
10. Aux 24V DC supply outputs
The terminals for the Aux 24V supply are labelled Aux 24V + and ROV. The ROV terminal is the negative terminal.
It is possible to have the Aux24V supply outputs removed for a few seconds when the panel is reset.
This is set as default. To change this, switch the system to access level 2 by operating the enable control
keyswitch and then operate the WRITE ENABLE switch by gently sliding it to the right.
The LCD will show:
AL3 Updates = xx
ENTER for Menu
Press the ENTER button and then the UP button repeatedly until the LCD displays:
R0V Not Removed
On System Reset
Press the ENTER button. The LCD will now show:
R0V Not Removed
On System Reset?
Press the ENTER button. The LCD will now show:
R0V Removed
On System Reset
Press the exit button.
The Aux 24V supply outputs are fitted with an electronic, self resetting fuse rated at 0.5 Amps to protect the
control panel’s 24V supply in the event of a wiring fault.
Any standing load on the Aux 24V supply outputs must be taken into account when calculating battery standby
times as standby time will be significantly affected by even modest standing loads on these outputs. It is
recommended that the Aux24V outputs are not used to power standing loads.
Where the Aux 24V supply outputs are used to power electromechanical devices such as relays or door retainers it
is imperative that a suppression diode is fitted across the coil of the device to prevent the generation of high
voltage transients back to the control panel power supply.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 16 of 36
11. Connection to relay contacts
Volt free changeover relay contacts are provided for local control and signalling if required. These contacts are
rated for switching signalling circuits only and the maximum ratings listed in table 1 should not be exceeded under
any circumstances.
Typically, the Aux 24V output of the control panel is switched through these relays and used to control other
systems.
11.1 Fault relay
The fault relay is normally energised and will de-energise upon any fault condition on the extinguishing module or
total loss of power.
11.2 1st stage alarm relay (on extinguishing modules)
The first stage alarm relay will operate upon activation of a zone that has been configured to contribute to the
extinguishant release or activation of one of the two monitored activation inputs and will de-activate only when
the panel has been reset.
This relay will also operate upon activation of the panel mounted or a remote manual release switch. The stage 1
relay output can be disabled at access level 2 via the menus on the Sigma XT+ module.
11.3 2nd stage alarm relay (on extinguishing modules)
The second stage alarm relay will operate when the panel enters the activated condition (i.e. the release
countdown timer has started) and will de-activate only when the panel has been reset from the released condition.
The stage 2 relay output can be disabled at access level 2 via the menus on the Sigma XT+ module.
11.4 Released relay (on extinguishing modules)
The released relay will operate when the module enters the released condition either by being activated
automatically via detection zones, operation of the monitored activation inputs or by being activated by a manual
release input. The released relay will also operate if the panel enters the released condition via the released
pressure switch input.
The Released output can be disabled at access level 2 via the menus on the Sigma XT+ module.
11.5 Aborted relay (on extinguishing modules)
Aborted relays will operate when the panel is in the aborted condition via an abort switch input.
11.6 Extract relay (on extinguishing modules)
The extract relay will operate when selected at access level 2. This provides a means to vent a room of
extinguishant gases but prevents the gases from being vented during a discharge.
To switch on the extract relay, operate the enable keyswitch and then press ENTER on the module on which the
required Extract relay is fitted.
The LCD will show:
DISABLE
EXTING RELEASE ?
Press the down button until the display shows:
TURN ON
EXTRACT OUTPUT ?
Press ENTER to turn on the Extract output.
The display will show:
TURN OFF
EXTRACT OUTPUT ?
Pressing ENTER again with turn the extract output off.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 17 of 36
12. Connection and configuration of status units and ancillary boards
The control panel should not be powered during the connection of status units or ancillary boards.
Status units and ancillary boards require a four-wire connection from the panel, which drops into each unit and
connects to the corresponding data and power, in and out terminals. Two of the cables carry power to the units
(24V) and the other two carry data. A four core cable suitable for carrying RS485 data should be used. If this is a
twisted pair cable then one twisted pair should be used for the data connections and the second pair used for the
power connections
Each status unit and ancillary board has a 3-bit DIL switch and must be allocated a unique address between 1 and
7.
The system is able to distinguish between status units and ancillary boards so it is possible to have a status unit
set to address 1 and an ancillary board set to address 1 if desired.
ADDRESS
SWITCH POSITIONS
1
2
3
4
5
6
7
The address switch is located on the bottom left hand corner of the status unit or ancillary board PCB. Note: The
address is only read when the boards are first powered or if the processor reset switch on the ancillary board or
status unit is pressed, so address switches should not be altered on a system that has power applied.
It is important that each individual status unit and ancillary board is allocated a unique address in the range 1 to
7. Units of the same type with the same address will cause intermittent faults to be displayed.
NOTE: 10 lamp status units (models K911113M8, K911113F8 and W911113W8) are not compatible with Sigma
XT+ extinguishant modules.
12.1 Adding new status units/ancillary boards
When the system is powered, it will search for connected status units and/or ancillary boards connected to
extinguishant modules.
If status units or ancillary boards are fitted and detected by the control panel, the LCD will display:
X FAULTS
►
ENTER TO VIEW
X = the number of faults
Press ENTER on the module to which the status units or ancillary boards are connected with the ENABLE control
switch keyswitch off and use the UP button on the module to view the faults. If status units and/or ancillary boards
are detected the LCD will display:
STATUS UNIT X
FAULT
X = the address of the status unit found
output unit x
fault
X = the address of the ancillary board found
Or
To accept the status units and/or ancillary boards found, turn the ENABLE controls keyswitch on and slide the
WRITE ENABLE switch on the module to which the status units or ancillary boards are connected gently to the left.
The LCD will then display:
STATUS UNIT X
ENTER TO ACCEPT
X = the address of the status unit found
Or
output unit X
ENTER TO ACCEPT
X = the address of the ancillary board unit found
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 18 of 36
When the ENTER button is pressed, the selected status unit or ancillary board will be added to the system and the
next unit to be added will be displayed. Press the ENTER button on the extinguishing module until all of the units
have been accepted then gently slide the WRITE ENABLE switch on the module to the right.
All of the status units and ancillary boards found by the extinguishant module have now been added and
disconnection of any of them will be displayed as a fault on the module and on the detection part of the system. If
any status units are disconnected, a HOLD activated indication will also be displayed at the extinguishing module
and all ancillary boards or status units that remain connected. With the ENABLE controls keyswitch off, the LDC
will display:
REMOTE BUS
FAULT
When additional status units or ancillary boards are added to the system, these will be shown on the LCD of the
extinguishing module when the system is powered up or the processor reset switch is pressed on the module to
which the status unit or ancillary board is connected and can be added to the system by following the procedure
above.
12.2 Removing status units or ancillary boards
If a status units or ancillary board needs to be removed from the system, disconnect the status unit or ancillary
board taking care not to short power supply or data cables. The ECU will display:
REMOTE BUS
FAULT
Press the processor reset button. When it has re-started, it will display:
STATUS UNIT X
FAULT
X = the address of the disconnected status unit
output unit x
fault
X = the address of the disconnected ancillary board
Or
Turn the ENABLE controls keyswitch on and gently slide the write enable switch to the left.
The LCD will then display:
STATUS UNIT X
ENTER TO ACCEPT
X = the address of the remaining status units found
Or
output unit X
ENTER TO ACCEPT
X = the address of the remaining ancillary boards unit found
When the ENTER button is pressed, the selected status unit or ancillary board will be added to the system and the
next unit to be added will be displayed. Press the ENTER button until all of the units have been accepted then
gently slide the WRITE ENABLE on the extinguishing module switch to the right.
Full details of status units and ancillary boards can be found in documents MAN-1095 and MAN-1089 (Sigma XT
Status unit and Ancillary board operation and maintenance man
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 19 of 36
13. Wiring to status units and ancillary board
The ECU has terminals for data and power connections to Sigma Si status indicator units and/or Sigma XT ancillary
boards. These terminals are labelled STATUS SERIAL and STATUS POWER. It is important to wire these terminals with
the correct polarity ensuring that + is wired to + and – is wired to – for both the serial data and the power wiring.
Up to seven status units and seven ancillary boards can be connected to each ECU. Consideration must be given to the
power consumption of status units and ancillary boards when calculating the standby battery requirements for the ECU.
Full details of the power consumption of status units and ancillary boards can be found in the operation and maintenance
manuals for the units MAN-1095 and MAN-1089.
SIGMA XT+ EXTINGUISHANT MODULE
+
CIE
serial
+
-
+
Status
serial
- +
Status
-
power
+
D1036S ISSUE 04
R21
R24
R30D
R30C R28
R30B
R30A
+
Z1
Z2
Z3
MAN DISAB REL
ACT
MAN
REL EXTR HOLD OK
F USE
FAIL
C7
FUSE LED15
S W1
WDOG
RESET
CPU LED11
SW2
PROC
RESET
R32
LED4
HOL LED14
S W5
ADDR
C10
MOD LED13
D2
COM LED12
W3
C5
-
+
LED10
F1
T R3 R12
R11
C8
R15
R16
W4
+
REG1
OUT
RS485
-
+
LED9
TO NEXT ANCILLARY BOARD
OR STATUS UNIT
MODE HOLD
R29B
R19
C18
R5
C6
C21
C13
+
LED8
D6 T R1
IC5
C9
R8
+
X1
LED7
IN
IC1
R2
C1
R3
R4
C2
D4
R6
-
D5
LED6
-
R31
Z10
X TA L1
LED5
R14
IC3
X4
R22 R25
+
B Z1
T R7
24V DC
Z2
LED3
R29D
R20
D9
R18
D8
T R4
C12
LED2
D7 T R6 D10 T R5 Z1
T R2
IC2
LED1
IC6
R1
C16
C15
R33
J2
R17
C17
R23 R26
R29C
IC4
D3
D1
W5
R27
IC7
W6
C3
+ - + -
MAN
REL RS485 RS485
IN
OU T
R9
HOLD EXTR
R10
ACT
C20
REL
C19
MAN DI SAB
MODE
R7 C11
Z3
F IR E
R13
Z2
F IR E
C4
DC
Z1
F IR E
R29
DC
PF
C14
+24V- +24V-
R29A
S/NO.
X1
PROC ESSOR
RESET
SW2
SW1
ADDR ESS
The last status unit or ancillary board connected to the ECU status serial bus must have a terminating link fitted.
Terminating links must be removed from all preceding status units and ancillary boards.
For details of the location of the terminating jumper links on status units and ancillary boards see the operation and
maintenance manuals for the units MAN-1095 and MAN-1089
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 20 of 36
14. Configuration
14.1 Language selection
The module is capable of displaying two languages if factory programmed to do so. The first access level 3
option is to select the local language or the default language (English)
14.2 Extinguishant output mode
The Sigma XT+ module has two extinguishing outputs. These can be configured to operate together at the
same time (common) or be configured as main and reserve outputs.
The factory default setting for the extinguishing outputs is common.
To change this, switch on the enable controls keyswitch and slide the write enable switch on the module to be
configured gently to the left. Press the ENTER button on the extinguishing module. The display will show:
EXTING O/P MODE.
= COMMON
Press the ENTER button and the display will show:
EXTING O/P MODE.
= MAIN/RESERVE
?
Press the ENTER button to select main/reserve.
To save the settings, slide the write enable switch gently to the right.
When the extinguishing module is activated, only extinguishant output 1 will switch on.
There will also be an additional menu item at access level 2 to allow the reserve extinguishant output to be
selected.
14.3 Configuring the activation mode
It is possible to configure the extinguishing modules to be activated by coincidence (both activation inputs) or
a single zone in a range of zones or one of the activation inputs. The activation mode is factory set to
coincidence.
To change this, switch on the enable controls keyswitch and slide the write enable switch on the module to be
configured gently to the left. Press the ENTER button on the extinguishing module then press the UP button.
The display will show:
ACTIVATION MODE.
= COINCIDENCE
Press the ENTER button and the display will show:
ACTIVATION MODE.
= single
?
Press the ENTER button to select single zone activation mode.
To save the settings, slide the write enable switch gently to the right.
Operation of any of the zones in the range of zones selected to trigger the module (see below) will now put
the module into the activated condition. Coincidence mode must not be set if single activation is required.
14.4 Configuring Stage 1 /Hold Output
The ‘1st Stage’ relay output is factory set to activate when as a stage 1 alarm contact, it can be re-configured
to activate when the a ‘Hold’ input is activated.
To change this, switch on the enable controls keyswitch and slide the write enable switch on the module to be
configured gently to the left. Press the ENTER button on the extinguishing module then press the UP button.
The display will show:
User O/p Mode
= Stage 1
Press the ENTER button and the display will show:
User O/p Mode
= Hold
?
Press the ENTER button to change mode.
To save the settings, slide the write enable switch gently to the right.
14.5 Configuring the activation zones (Sigma CP panel connection only)
The ECU is factory set to be activated by coincidence activation of zones 1 and 2 if connected to the serial bus
of a Sigma CP fire control panel. Up to four ECUs can be connected to the serial bus of a Sigma CP fire control
panel.
This can be changed if required so that any zones can activate the ECU.
It is possible for a range of zones to contribute to the extinguishant release and for the same zone to
contribute to the release on more than one ECU.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 21 of 36
Note: The number of the first activation zone must be lower than the last activation zone.
To do this, switch on the enable controls keyswitch and slide the write enable switch on the module to be
configured gently to the left. Press the ENTER button on the extinguishing module and then the up button until
the display will show:
FIRST ACTIV.
ZONE = X
X will be the number of the zone currently selected to be the first activation zone.
This can be changed if required by using the UP and DOWN buttons to select the require zone number. When
the required zone number is displayed, pres the ENTER button. The display will show:
FIRST ACTIV.
ZONE = X
?
X will be the number of the zone selected to be the first activation zone.
Press the ENTER button and then the UP button. The display will then show:
LAST ACTIV.
ZONE = X
X will be the number of the zone currently selected to be the last activation zone.
This can be changed if required by using the UP and DOWN buttons to select the require zone number. When
the required zone number is displayed, pres the ENTER button. The display will show:
last ACTIV.
ZONE = X
?
X will be the number of the zone selected to be the first activation zone.
Activation of any of the zones in the range selected will now contribute to activation of the ECU.
14.6 Reset inhibit time
It is a requirement of the standard EN12094-1 to inhibit reset of the system after it has been activated until
there is a signal representing the end of the discharge (a released input) or for an adjustable time period of up
to 30 minutes. The factory default for the reset inhibit time is 0.
To change the reset inhibit time, switch on the enable controls keyswitch and slide the write enable switch
gently to the left. Press the ENTER button then press the UP button until the display shows:
RESET INHIBIT
TIME = 0
RESET INHIBIT
TIME = 0
?
Press the ENTER button and the display will show:
To change the reset inhibit time, press the UP or DOWN buttons until the time
required is displayed and then press ENTER.
To save the settings, slide the write enable switch gently to the right.
Resetting of the ECU after it has been activated will now be prohibited until the reset inhibit time that has
been set.
14.7 Pre-release delay time
The standard EN12094-1 allows for a time delay to be set from activation of the ECU to operation of the
extinguishing release output. This time may be between 0 and 60 seconds with a maximum of 5 second steps.
The factory default time delay on the ECU is 30 seconds.
To change the pre release delay time, switch on the enable controls keyswitch and slide the write enable
switch gently to the left. Press the ENTER button then press the UP button until the display shows:
pre-rel delay
TIME = 30 sec.
pre-rel delay
TIME = 30 sec.?
Press the ENTER button and the display will show:
To change the time, press the UP or DOWN buttons until the required time is
displayed.
To save the settings, slide the write enable switch gently to the right.
The pre-release delay time will now be set to the chosen value.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 22 of 36
14.8 Output 2 delay
If the configured extinguishing output mode is Common (rather than MAIN/RESERVE), it is possible to set
extinguishing output 2 to have a further delay of up to 10 minutes in steps of 1 minute.
Extinguishing output 2 delay timer will be started when extinguishing output 1 is asserted.
This could be used to provide an additional discharge of extinguishing agent to maintain concentration for a
longer period of time.
Output 2 Delay
TIME = 00 min.
Press the ENTER button and the display will show:
Output 2 Delay
TIME = 00 min.?
To change the time, press the UP or DOWN buttons until the required time is
displayed
To save the settings, slide the write enable switch gently to the right.
The extinguishing release time will now be set to the chosen value.
Note: This option is available only on modules fitted with firmware version 1.59 or higher.
14.9 Extinguishant release time
The time that the extinguishant output is active for can be set between 60 and 300 seconds. The factory
default time for this is 60 seconds. It is also possible to disable this timer such that the extinguishant outputs
remain active until the module is reset. See Release timer menu option.
To change the extinguishant release time, switch on the enable controls keyswitch and slide the write enable
switch gently to the left. Press the ENTER button then press the UP button until the display shows:
EXTING. RELEASE
TIME = 60 sec.
Press the ENTER button and the display will show:
EXTING. RELEASE
TIME = 60 sec. ?
To change the time, press the UP or DOWN buttons until the required time is
displayed
To save the settings, slide the write enable switch gently to the right.
The extinguishing release time will now be set to the chosen value.
14.10 Second stage alarm pulsing/continuous
The second stage alarm output can be configured to be steady or pulsing at about 1 second on, 1 second off
to suit the desired application.
The factory default for the second stage alarm is pulsing.
To change the operation of the second stage sounders, switch on the enable controls keyswitch and slide the
write enable switch gently to the left. Press the ENTER button then press the UP button until the display
shows:
PULSED
ACTIV. ALARMS
Press the ENTER button and the display will show:
STEADY
ACTIV. ALARMS ?
To change to steady second stage alarms, press the ENTER button.
To save the settings, slide the write enable switch gently to the right.
The second stage alarm output will now be steady when the module is activated.
14.11 Released indication
It is possible to select whether the released indication is operated at the same time as the extinguishant
release outputs operate or by operation of a pressure switch connected to the released, pressure switch input.
The factory default setting is for the released indication to be operated by operation of a pressure switch
connected to the released, pressure switch input.
To change the operation of the released indication, switch on the enable controls keyswitch and slide the write
enable switch gently to the left. Press the ENTER button then press the UP button until the display shows:
RELEASED IND ON
RELEASED INPUT
RELEASED IND ON
Press the ENTER button and the display will show:
To change to this, press the ENTER button.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 23 of 36
EXTING. REL
?
To save the settings, slide the write enable switch gently to the right.
The released indication will now be lit when the extinguishant outputs operate.
14.12 Delay on manual release
The manual release function (panel mounted and remote) can be configured to have a pre-release time delay
(as per the set pre-release time) or to have no pre-release delay allowing immediate operation of the
extinguishant outputs when a manual release is operated.
The factory default setting for this is for the manual release to have a delay time the same as the pre-release
delay.
To configure the ECU to have no delay when a manual release is operated, switch on the enable controls
keyswitch and slide the write enable switch gently to the left. Press the ENTER button then press the UP
button until the display shows:
DELAY ON
MANUAL RELEASE
NO DELAY ON
MANUAL RELEASE ?
Press the ENTER button and the display will show:
To change to this, press the ENTER button.
To save the settings, slide the write enable switch gently to the right.
Operation of a manual release will now operate the extinguishant outputs immediately with no delay.
14.13 Release timer (infinite duration)
The release timer can be disabled such that once the extinguishant outputs have operated; they remain
operated until the system is reset.
To disable the release timer, switch on the enable controls keyswitch and slide the write enable switch gently
to the left. Press the ENTER button then press the DOWN button until the display shows:
RELEASE TIMER
ENABLED
RELEASE TIMER
DISABLED
?
Press the ENTER button and the display will show:
To disable the release timer, press the ENTER button.
To save the settings, slide the write enable switch gently to the right.
With the release timer disabled, the extinguishant outputs will remain operated until the system is reset.
14.14 R0V not removed on reset
It is possible to configure the AUX24V output to be removed for a few seconds when the system is reset.
The factory default setting is for the Aux24V output not to be removed when the system is reset.
To configure the ECU such that Aux24V output is removed for a few seconds when the system is reset, switch
on the enable controls keyswitch and slide the write enable switch gently to the left. Press the ENTER button
then press the DOWN button until the display shows:
R0V NOT REMOVED
ON SYSTEM RESET
Press the ENTER button and the display will show:
R0V REMOVED
ON SYSTEM RESET?
To select this option, press the enter button.
To save the settings, slide the write enable switch gently to the right.
With the ECU configured to remove the R0V output on system reset, the Aux 24V output will be removed for a
few seconds when the reset button is pressed.
14.15 Disable earth fault monitoring
The earth fault monitoring facility can be disabled if required.
The factory default setting is for the earth fault monitoring facility to be enabled.
To disable the earth fault monitoring, switch on the enable controls keyswitch and slide the write enable
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 24 of 36
switch gently to the left. Press the ENTER button then press the DOWN button until the display shows:
EARTH FAULT
ENABLED
EARTH FAULT
DISABLED
Press the ENTER button and the display will show:
?
To select this option, press the enter button.
To save the settings, slide the write enable switch gently to the right.
The earth fault monitoring facility on the ECU will now be disabled.
14.16 Disable fault output
The fault output relay can be disabled if required.
The factory default setting is for the fault output relay to be enabled.
To disable the fault output relay, switch on the enable controls keyswitch and slide the write enable switch
gently to the left. Press the ENTER button then press the DOWN button until the display shows:
FAULT output
ENABLED
Press the ENTER button and the display will show:
FAULT output
disABLED
?
To select this option, press the enter button.
To save the settings, slide the write enable switch gently to the right.
The fault output relay on the module will now be disabled.
14.17 Invert low pressure switch input
To enable low pressure switches to be used which have normally closed rather than normally open contacts, it
is possible to invert the low pressure switch input.
The factory default setting is for the low pressure switch input to use a normally open contact.
To invert the low pressure switch input, switch on the enable controls keyswitch and slide the write enable
switch gently to the left. Press the ENTER button then press the DOWN button until the display shows:
LOW PRESS. I/P
MODE = NORMAL
Press the ENTER button and the display will show:
LOW PRESS. I/P
MODE = INVERTED ?
To select this option, press the enter button.
To save the settings, slide the write enable switch gently to the right.
The low pressure switch input will now require a normally closed contact via a 470R trigger resistor and 6K8
end of line resistor for correct supervision.
Note: If the Low pressure input is configured as INVERTED in the menu option, an error will display
EXTING.PRESS.FAULT if the switch is not configured correctly.
The INVERTED input is looking for the 470 ohm trigger resistor to be removed on activation.
14.18 Extinguishant output monitoring levels
The extinguishant outputs are able to monitor both solenoid and igniting actuator releasing devices. This
requires that the outputs be calibrated with the releasing device and the cable to it, fitted as it will be in the
working system.
The extinguishant outputs are fitted with a 1N4004 diode at the factory and the default monitoring level will
be set at approximately 206 but may be between 204 and 208.
Before calibrating the extinguishant outputs ensure that the releasing device is fitted to the cable as shown in
section 10.
To change the monitoring level for extinguishing output 2, switch on the enable controls keyswitch and slide
the write enable switch gently to the left. Press the ENTER button then press the DOWN button until the
display shows:
exting. o/p 2
level = 206
Press the ENTER button and the display will show:
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 25 of 36
exting. o/p 2
level = xxx
?
The XXX here will be the actual monitoring level read by the module.
To save this setting press the ENTER button.
To set the monitoring level for extinguishant output 1, press the DOWN button. The display will show:
exting. o/p 1
level = 206
exting. o/p 1
level = xxx
Press the ENTER button and the display will show:
?
The XXX here will be the actual monitoring level read by the module.
To save this setting press the ENTER button.
To save the settings, slide the write enable switch gently to the right.
The extinguishing output levels will now be set and any significant variation detected in the monitoring levels
will be announced as and EXTING. O/P fault.
15. Panel operation – Access levels 1 and 2
15.1 Normal condition
Under normal conditions and in Manual & Auto mode, the unit will have only the green, Power On LED lit. With
the ENABLE controls keyswitch off, LCD will show:
Manual & Auto
When switched to Manual Only mode, the Manual only yellow LED will be lit and the display will show:
ManUAL MODE
The ECU has 3 access levels. Access level 1 is available at all times and allows operation the Buzzer silence
button and the Lamp test function by holding down the EXIT button for more than 2 seconds. Access level 2 is
enabled after operation of the front panel mounted Enable Controls keyswitch and Access level 3 allows
configuration options to be set following operation of the Write Enable switch while at access level 2 (Enable
Controls keyswitch operated).
15.2 Access level 2
With the Enable Control keyswitch operated, the LCD will display:
Access level 2 ►
ENTER for Menu
Press the ENTER button to view the following menu options.
15.2.1 Disable extinguishant release outputs.
To disable both of the extinguishant release outputs, press the UP button on the module while at access level
2.
The display will show:
DISABLE
EXTING. RELEASE ?
ENABLE
EXTING. RELEASE ?
Press the Enter button to select this function. The display will show:
The yellow disabled LED on the module that has been disabled
will be lit.
Turn the Enable keyswitch off to leave the disablement active. To re-enable the extinguishant outputs repeat
the procedure above.
15.2.2 Disable Manual release
To disable all Manual release inputs (front panel mounted and remotely connected), press the UP button on
the module while at access level 2 until the module displays:
DISABLE
manual RELEASE ?
enable
manual RELEASE ?
Press the Enter button to select this function. The display will show:
The yellow disabled LED on the module that has been disabled
will be lit.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 26 of 36
Turn the Enable keyswitch off to leave the disablement active. To re-enable the manual release facility repeat
the procedure above.
15.2.3 Disable Stage 1 output
To disable the 1st Stage relay output, press the UP button on the module while at access level 2 until the
display shows:
DISABLE
stage 1 output ?
ENABLE
STAGE 1 OUTPUT ?
Press the Enter button to select this function. The display will show:
The yellow disabled LED on the module that has been disabled
will be lit.
Turn the Enable keyswitch off to leave the disablement active. To re-enable the Stage 1 relay output repeat
the procedure above.
15.2.4 Disable Stage 2 output
To disable the 2nd Stage relay output, press the UP button on the module while at access level 2 until the
display shows:
DISABLE
stage 2 output ?
ENABLE
STAGE 2 OUTPUT ?
Press the Enter button to select this function. The display will show:
The yellow disabled LED on the module that has been disabled
will be lit.
Turn the Enable keyswitch off to leave the disablement active. To re-enable the Stage 2 relay output repeat
the procedure above.
15.2.5 Disable Released output
To disable the Released relay output, press the UP button on the module while at access level 2 until the
display shows:
DISABLE
released output ?
ENABLE
released OUTPUT ?
Press the Enter button to select this function. The display will show:
The yellow disabled LED on the module that has been disabled
will be lit.
Turn the Enable keyswitch off to leave the disablement active. To re-enable the Released relay output repeat
the procedure above.
15.2.6 Disable Extract output
To disable Extract relay output, press the UP button on the module while at access level 2 until the display
shows:
DISABLE
extract output ?
ENABLE
extract OUTPUT ?
Press the Enter button to select this function. The display will show:
The yellow disabled LED on the module that has been disabled
will be lit.
Turn the Enable keyswitch off to leave the disablement active. To re-enable the Extract relay output repeat
the procedure above.
15.2.7 Turn on Extract output
To turn on the extract relay output, press the DOWN button on the module while at access level 2 until the
display shows:
TURN ON
EXTRACT OUTPUT
Press the Enter button to select this function. The display will show:
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 27 of 36
TURN OFF
EXTraCT OUTPUT ?
The yellow disabled LED on the module that has been disabled
will be lit.
Turn the Enable keyswitch off to leave the Extract output active. To turn off the Extract output, repeat the
procedure above.
Note: the extract output does not turn off when the module is reset.
15.2.8 Select Reserve Solenoid Output (Configuration Option)
If the panel is configured for Main/Reserve solenoid operation (See section 14.1) then an additional menu
option is given to select which output is used.
To turn on the Reserve Solenoid output, press the UP button on the module while at access level 2 until the
display shows:
SELECT RESERVE
EXTING. OUTPUT
SELECT MAIN
EXTING.
OUTPUT ?
Press the Enter button to select this function. The display
will show:
The yellow Reserve Cylinders LED indicator on the
module will be lit.
Turn the Enable keyswitch off to leave the Reserve solenoid output active. To revert to the Main solenoid
output, repeat the procedure above.
Note: This menu option is not shown if the panel is configured to Common Solenoid mode.
15.3 Single input activation
Upon receipt of a fire condition by operation a zone that is configured to contribute to extinguishant release at
a Sigma CP fire detection panel connected to the serial bus of the unit or operation of one of the monitored
activation inputs by a volt free contact, the Activated LED on the module will flash, the first stage relay contact
will operate, the first stage sounder output will operate and the display will show:
preactivated ►
Pressing the Silence alarm button will turn off the 1st stage sounder output.
15.4 Double input activation
Upon receipt of a second fire condition by operation of a zone that is configured to contribute to
release at a Sigma CP fire detection panel connected to the serial bus of the unit or by operation
monitored activation input via a volt free contact and with the unit switched to Automatic and
with the Hold input not active and if the Disable Extinguishant function not been invoked, the
module will respond as listed below:
a)
b)
c)
d)
e)
f)
extinguishant
of the second
Manual mode
extinguishant
The second stage alarm output will operate.
The 2nd stage contact will operate.
The Activated indicator will light continuously.
The display will indicate Activated and show the time remaining until release in seconds.
The extinguishant output will operate after the configured delay time and for the configured
duration.
The display will show Activated Discharging for the duration of the release
time.
When detection zones or activation inputs have operated and the activated condition is reached (i.e. the
Activated indicator is lit) it shall not be possible to reset the unit until the Reset Inhibit timer has elapsed.
If the module has been configured with the activation mode as SINGLE, it will respond as above upon
operation of a single zone that has been configured to contribute to extinguishant release or by operation of
one of the monitored activation inputs.
15.5 Reset
To reset the ECU, insert the Enable key, turn to the right then press the Reset button.
The unit will reset only after the Reset Inhibit timer has expired once the activated condition has been
established.
15.6 Sounder fault
A fault on either of the sounder circuits will light the Fault LED and the ECU will display:
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 28 of 36
stage 1 alarms
fault
or
stage 2 alarms
fault
15.7 Power fault
Failure of the mains power or disconnection of the standby battery will cause the Fault LED to light and the
display will show:
POWER SUPPLY
FAULT
15.8 System fault
The System Fault and general fault LEDs will light if the configuration memory has not been set or has become
corrupted
15.9 Lamp test
Indicators can be lamp tested by holding down the EXIT button for more than 2 seconds.
15.10 Hold condition
Activation of the Hold input on the ECU or at a remotely mounted status unit will cause the Hold Activated
indicator to light on the ECU and on any status units or ancillary boards connected to it.
If the ECU is in the Activated condition and the pre-release timer is running then the extinguishant release
sequence will be halted and the pulsing, 2nd stage sounders shall change to 1 second on, 2 seconds off.
Release of the Hold input shall re-start the pre-release timer from maximum.
15.11 Released condition
The released pressure switch input will be connected to a pressure switch mounted on the extinguishant
cylinder which operates when the extinguishant has been released. This will activate the released indicator on
the ECU.
If the extinguishant has been released by mechanical means i.e. the ECU is not in the activated condition,
operation of the released pressure switch input will establish the Released condition.
15.12 Low pressure switch
The low pressure switch input will be connected to a pressure switch on the extinguishant cylinder which will
operate if the pressure in the cylinder falls below a set point. This will happen after the extinguishant has been
released but may happen before release through a leak. The fault LED on the ECU and on the detection part
will light and the buzzer will sound when this input is operated.
15.13 Manual only mode
The mode of the system can be toggled between Manual Only and Automatic & Manual by operating the Mode
select keyswitch.
When the ECU is in Manual Only mode, the extinguishant cannot be released via a serial connection to a
Sigma CP fire control panel or operation of the monitored activation inputs.
The mode can also be changed to manual by the external mode select input or a keyswitch on a status unit.
Any mode select input that is switched to Manual only mode will override a keyswitch switched to Automatic
and Manual mode. All inputs must be switched to Manual and Automatic mode for the ECU to be in Automatic
and Manual mode.
15.14 Manual Release
The ECU may be activated by Manual release inputs via the manual release control on the front panel, a
remotely mounted Manual release control connected to the monitored manual release inputs or by a manual
release control mounted on a status unit.
Operation of any of these Manual release controls will immediately activate the ECU and begin the pre-release
timer (if the module is configured to have a time delay for Manual release inputs).
15.15 Abort input
The ECU has the facility for connection of an Abort control. Operation of the Abort input during the pre-release
delay time or before activation will light the Abort indicator on the ECU and the extinguishant release timer will
be canceled i.e. the extinguishant will not be released. The ECU can be immediately reset from this condition.
16. Internal controls
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 29 of 36
16.1 Watchdog reset
If the microprocessor on an ECU fails to carry out its operation correctly it will attempt to restart. The ECU will
show Fault and System Fault LEDs on the front panel, the buzzer will sound and the display will show CPU
fault
This fault can only be cleared by pressing the Watchdog Reset button.. The buzzer will continue to sound until
the watchdog activation is reset.
16.2 Processor reset
If the microprocessor on an Extinguishant module fails to run correctly it can be reset by pressing the
Processor Reset button on the PCB inside the control panel.
This should not normally be necessary but should be done as a matter of course if the system is behaving
abnormally. The system should resume normal operation within a couple of seconds of pressing the processor
reset button.
16.3 Terminate extinguishant
Once the extinguishant outputs have been operated they can not be switched off until after the reset inhibit
timer has elapsed. For test purposes a terminate extinguishant button is provided which will terminate
operation of the extinguishant outputs and allow the system to be reset.
16.4 Write enable switch
It is necessary to protect the configuration memory of extinguishant modules while the system is running
normally. To do this a memory Write Enable switch is provided on each module. The memory Write Enable
switch must be switched on before any changes can be made to the configuration. The Write Enable switch is
quite fragile and should be operated with care.
16.5 Address switch
Extinguishant modules are connected to the serial bus of the Sigma CP detection part of the control panel and
each module must be allocated an address between 1 and 7 using the binary coded DIP switch.
The switch setting are shown in this table
ADDRESS
SWITCH POSITIONS
1
2
3
4
5
6
7
Internal controls on extinguishant modules
Term. Exting.
Proc. Reset W/dog Reset
Address
.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 30 of 36
Write Enable
17. Internal indications
17.1 Watchdog
Indicates that the processor has failed to correctly execute code and has been re-started by the watchdog
circuit. The watchdog reset switch must be pressed to clear the Watchdog fault condition.
Press the Watchdog reset button. If system does not return to normal then the module is probably damaged
and needs the circuit board replacing.
17.2 System fuse
Indicates that the modules main fuse has been overloaded and the module is shut down. Remove and review
all loads then re-connect one at a time.
17.3 Man. Release
Indicates that either the front panel mounted or a remotely connected Manual release control has been
operated. This indication can only be cleared by power cycling the module or pressing the processor reset
switch.
18. Power supply
The ECU requires a 230V (+10%/-15%), 50/60Hz, AC mains power supply which connects to the fused
terminal block labelled “230V”.
The ECU has a 20mm T2A L250V mains fuse.
This fuse should only be replaced with fuses of the same or similar types.
The maximum loading on the power supply must be carefully considered when connecting externally powered
equipment such as sounders and solenoids.
Exceeding the maximum power supply rating may cause a fuse or other protective device to
operate and render the equipment inoperative until the fuse is replaced or protective devices are
reset.
The table below can be used to calculate the loading for all models by adding the loads in the second column.
ECU
ECU
ECU
ECU
max alarm load
module total sounder load
module extinguishant output load
module Aux 24V supply
Current in milliamps
105
TOTAL LOAD (must be less than 3A)
The output voltage of the power supply is 28V DC +/- 2V and the total current rating is 4A.
The incoming mains cable should be routed well away from other lower voltage wiring by a distance of at least
50mm.
Mains wiring should include an earth conductor, which is securely bonded to the building earth and should
enter the enclosure as close as possible to the mains terminal block. Mains wires should be kept very short
inside the enclosure and secured together close to the mains terminal block with a cable tie.
The maximum capacity batteries that can be fitted inside the enclosure are 7Ah. These will provide sufficient
capacity for 24 hours standby.
The maximum current drawn from the batteries when the main power source is disconnected is 4 Amps.
Battery leads are supplied wired to the power supply along with a link to connect the two batteries together.
It is most important that the polarity of the batteries is carefully observed when connecting.
Wrongly connected batteries could cause damage to the control panel.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 31 of 36
19. Maintenance
Sigma XT+ ECUs do not require any specific maintenance but should the control panel become dirty it can be
wiped over with a barely damp cloth. Detergents or solvents should not be used to clean the panel and care must
be taken that water does not enter the enclosure.
The control panel contains sealed lead acid batteries to provide standby power in the event of mains failure.
These batteries have a life expectancy of around 4 years. It is recommended that these batteries be tested in
accordance with the battery manufacturer’s recommendations annually to determine their suitability for continued
standby applications.
Testing of the extinguishant system should only be carried out by trained personnel and must be done with
appropriate isolation measures in place to ensure that accidental discharge of the extinguishant agent is avoided.
Should the control panel become faulty the complete electronic assembly and front plate can be replaced.
To do this, any configured options should be noted then both mains and battery power should be removed before
the work is started.
The field wiring should be carefully labelled and removed from the terminals.
The faulty PCB plate assembly can now be taken out of the panel by removing the 2 screws.
Fitting the new PCB is the reverse of the procedure for removing the board.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 32 of 36
20. CE Mark
All control panels have a label affixed to the inside of the lid as shown below.
This label should not be removed under any circumstances.
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 33 of 36
21. Commissioning instructions
21.1
Before applying power to the panel, any solenoids or igniting actuators must be physically isolated from
the system by disconnecting both wires to it. This will prevent any accidental release of extinguishant.
21.2
When power is applied, if all connections are correct, only the green Power On and either the Automatic
and Manual or Manual Only indicators should be lit.
If any fault indicators are lit the wiring to the appropriate input or output should be checked an all faults
cleared before proceeding.
21.3
Once the panel is fault free, it can be configured with the desired options as described in section 15.
21.4
Once the panel has been configured the system should be thoroughly tested to ensure that the control
panels responds as expected and required.
21.5
After satisfactory testing, any final connections should be made (such as to the
extinguishant release actuator).
21.6
A record of the configuration options that have been set on the detection part should be recorded in the
table below and this manual provided as part of the documentation recommended by BS5839:Part
1:2002 section 40.2 b).
Note: If the Low pressure input is configured as INVERTED in the menu option, an error will display
EXTING.PRESS.FAULT if the switch is not configured correctly.
The INVERTED input is looking for the 470 ohm trigger resistor to be removed on activation.
CONFIGURATION OPTION
WRITE SETTING
Extinguishant output mode =
ACTIVATION MODE =
User O/p Mode =
FIRST ACTIV. ZONE =
LAST ACTV. ZONE =
RESET INHIBIT TIME =
PRE-REL. DELAY TIME =
EXTING. RELEASE TIME =
PULSED ACTIV. ALARMS ?
STEADY ACTIV. ALARMS ?
RELEASED IND. ON RELEASED INPUT ?
RELEASED IND. ON EXTING RELEASE ?
DELAY ON MANUAL RELEASE ?
NO DELAY ON MANUAL RELEASE ?
PRE-REL DELAY RESET ENABLED ?
PRE-REL DELAY RESET DISABLED ?
RELEASE TIMER ENABLED ?
RELEASE TIMER DISABLED ?
R0V NOT REMOVED ON SYSTEM RESET ?
R0V REMOVED ON SYSTEM RESET ?
EARTH FAULT ENABLED ?
EARHT FAULT DIASLABLED ?
FAULT OUTPUT ENABLED ?
FAULT OUTPUT DISABLED ?
LOW PRESS. I/P NORMAL ?
LOW PRESS. I/P INVERTED ?
EXTING. O/P 1 LEVEL =
EXTING O/P 2 LEVEL =
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 34 of 36
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 35 of 36
*Man-1111*
Man-1111_SigmaXT+_Coincidence_Unit_18
Page 36 of 36
Download PDF