Duomo BX316 User manual

Microprocessor control
Wall mounted
16 zone protection (across 1 or 2 zones)
4 - 20mA signal input
Relay outputs (incl. fire alarm interface)
Positive safety feature
Measuring range 0 - 20% LEL/0 - 300ppm
IP65 protective rating
EN50194 for explosive gases
EN50291 for toxic gases
3 year guarantee
Application
Duomo is recognised within the gas industry for
providing a comprehensive range of low cost, high
reliability gas detection for many applications. We have
installed and commissioned natural gas and carbon
monoxide sensors in applications such as boiler rooms,
kitchens, car parks, aircraft hangers, factories and
shopping centres.The BX216 is the command centre for
the complete range of Duomo gas sensors. All Duomo
products are manufactured to meet relevant European
Normatives and proposals for explosive and toxic gases.
Features
The BX216 is a wall mounted microprocessor based gas
detector control unit. It can be configured to meet
customer requirements. The following parameters can
be changed using the on board menu:
Number of sensors from 1 to 16
Type of gas to be sensed (explosive or toxic)
Pre-alarm level for each sensor
The number of zones (1 or 2)
Main alarm relay action (latching or auto-reset)
Positive safety feature
Alarm logging function
Event history
The BX216 has five main terminal blocks for the
following;
The incoming mains supply
The alarm circuit wiring (including fault,siren,
pre-alarm and main alarm relays)
The power supply to the sensors
The 4 - 20mA return cable from the sensors
A 0 - 10V output to BMS proportional to the 4 - 20mA
return signal
The front panel has an LCD display showing the date,
time, current sensor levels and much more. LED's on the
panel indicate what alarm status the unit is in, as well as
any faults present on the connected sensors.
Operation
The BX216 can detect both explosive and toxic gases.
When the remote sensor detects the presence of the
targetgasa4-20mA signal is sent to the detector,
proportional to the level of gas. The BX216 then
operates a pre-alarm relay - used for remote sirens or
visual indicators. If the level of gas continues to rise then
the second pre-alarm is actuated. In the case of
explosive gases, when the gas reaches a preset level, the
main alarm relay is activated to break the electrical
supply to the gas safety shut-off valve (SSOV).The BX216
also has a separate volt-free sensor fault relay that
actuates if the correct return signal is not sensed by the
detector. There is also the provision of a fire alarm
interface. This controller can be interlinked with a fire
alarm so that in the event of a fire, it would shut down
the gas supply.
BX316 Gas Detector
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Key
Overall Dimensions
BX216 Fascia & PCB Layout
1. Power On - Lights when supply voltage is applied.This light flashes during self diagnostics start up.
2. Battery - Lights when the BX216 is powered by a battery (optional).When flashing, the standby battery has low charge.
3. Overload Probes - Indicates a short circuit or that one of the connected sensors is absorbing too much current.
4. Overload Battery - Indicates that the battery supply (optional) is not properly connected or is faulty.
5. Fault - Indicates a sensor fault, loss of signal or incorrect connection of the sensor.When on, the system will enter a full
alarm status until the faulty sensor has been removed or replaced.
6. Siren Status - Shows green when the external siren is enabled; red when it is disabled.
7. IR Transmitter - Can be used to transmit the contents of the internal memory to an external device.
8. Pre / Main Alarm - Illuminate when the pre or main alarm gas threshold has been reached.
9. External Alarm - If an externally fitted device (e.g. fire alarm or emergency stop) has activated, this LED illuminates.
10. Display - Backlit display that shows details of the unit, connected sensors and internal programming menus.
11. Keypad - Used to navigate through the various programming menus.
12. Printer Port - Allows a printer to be attached to print off all the data stored in memory.
13. Test Button - This button simulates a gas leak and tests the full funcionality of the BX216.
14. Reset Button - When pressed it resets all internal memory.
15. Output Terminal Block - Converts the 4 - 20mA return signal from the sensors toa0-10Voutput connection for BMS.
16. Sensor Return Terminal Block - Connections for the incoming return cable from the sensors.
17. Sensor Supply Terminal Block - Connections for the outgoing power supply to the sensors.
18. Relay Terminal Block - Connections for fault,siren, pre-alarm and main alarm relays.
19. Mains Supply Terminal Block - Connections for the incoming mains supply.
20. External Alarm Terminal Block - Connections for a fire alarm / external emergency stop etc.
3
3
0
1
4
5
3
3
0
.
5
BX216BX216
Multi-channel Gas Detection SystemMulti-channel Gas Detection System
PowerPower
BatteryBattery
Over Load ProbesOver Load Probes
Over Load BatteryOver Load Battery
Pre AlarmPre Alarm
Main AlarmMain Alarm
Ext AlarmExt Alarm
Siren StatusSiren Status
FaultFault
4
5
2
1
311
12
13
14
6
7
125
EnterEnter
TestTest PrinterPrinterResetReset
213 21 910111213147684521376845213
213
4
4
76845213
Ph N
12345678_ 76845213
89 10
15
16
17
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18
19
20
280
170

Typical Wiring Schematic for BX216
Without positive safety (1 zone)
Note: Connections for other detectors may differ. Check detector datasheet wiring schematic. 1mm2CSA cable only.All relays are volt - free.
Mains power
supply
Relay outputs
21 321 3
8
7
6
5
4
21 38
7
6
5
4
Return cables from sensors
ZONE 2
ZONE 1
ZONE 2
ZONE 1
Power supply
to sensors
21 3
4
4
21 312
111098
7
6
5
4
FAULT
RELAY
SIREN
RELAY
PRE-
ALARM
ZONE 1
MAIN
ALARM
ZONE 1
MAIN
ALARM
ZONE 2
PRE-
ALARM
ZONE 2
NC NC
NO NO
C
NC
NO
C
NC
NO
CC
3/5A
Power
Supply
230V
NPh
14
13
NC
NO
C
NC
NO
C
Relay outputs
21 312
111098
7
6
5
4
FAULT
RELAY
SIREN
RELAY
PRE-
ALARM
ZONE 1
MAIN
ALARM
ZONE 1
MAIN
ALARM
ZONE 2
PRE-
ALARM
ZONE 2
NC NC
NO NO
C
NC
NO
C
NC
NO
CC
3/5A
Power
Supply
230V
14
13
NC
NO
C
NC
NO
C
Relay outputs
21 312
111098
7
6
5
4
FAULT
RELAY
SIREN
RELAY
PRE-
ALARM
ZONE 1
MAIN
ALARM
ZONE 1
MAIN
ALARM
ZONE 2
PRE-
ALARM
ZONE 2
NC NC
NO NO
C
NC
NO
C
NC
NO
CC
3/5A
Power
Supply
230V
14
13
NC
NO
C
NC
NO
C
Relay outputs
21 312
111098
7
6
5
4
FAULT
RELAY
SIREN
RELAY
PRE-
ALARM
ZONE 1
MAIN
ALARM
ZONE 1
MAIN
ALARM
ZONE 2
PRE-
ALARM
ZONE 2
NC NC
NO NO
C
NC
NO
C
NC
NO
CC
3/5A
Power
Supply
230V
14
13
NC
NO
C
NC
NO
C
Relay outputs
21 312
111098
7
6
5
4
FAULT
RELAY
SIREN
RELAY
PRE-
ALARM
ZONE 1
MAIN
ALARM
ZONE 1
MAIN
ALARM
ZONE 2
PRE-
ALARM
ZONE 2
NC NC
NO NO
C
NC
NO
C
NC
NO
CC
3/5A
Power
Supply
230V
14
13
NC
NO
C
NC
NO
C
Without positive safety (2 zone)
With positive safety (1 zone) With positive safety (2 zone)
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Electrical Installation
Initial Setup
Powering Up
Installing A Sensor
The BX216 is a safety device designed to give audible
alarms and automatically provide latched electrical
isolation of associated gas safety shut off valves in the
event of a gas leak or build up of toxic gases. The sensor
can be located up to 100m from the gas detector. Cable
size should be 1mm2 CSA. If the sensor cables are run
seperately in specific conduit it is not essential to use
screened cable but if the cables are routed through
conduit or trunking containing other wiring the use of
screened cable is advisable. The wiring should be
performed by a qualified person in accordance with
current regulations. The terminal rails makes installation
easy and quick. Do not mount close to any heat source or
in an area where moisture is likely to effect operation.The
IP rating of this unit is IP65. Sensors should be positioned
as shown below. If you require any guidance on this
please call our technical help on 01905 797989. When the unit is first powered up you will see the above
screen as it counts down for 90 seconds during initial
warm up.
To set the BX216 up you will need to enter the menu
system. Press and hold Enter for 5 seconds and the screen
above will appear.The default password is "1234".Move
the cursor left and right using the keys, pressing enter to
select each number. When you have entered the correct
password the screens below appear.
Once completed, the unit is ready and shows the above
screen including; serial number, date and time, the
number of zones set, the current detected zone
(including the type of gas) and the current level of gas.
Each zone is displayed for 8 seconds in turn. To cycle
through the zones, use the left and right keys on the
keypad.To pause on a zone, press the Enter key. Press the
Enter again to move on and continue cycling through.
The sensors must be mounted as shown below with the
sintered head pointing vertically down. When replacing
sensors never seperate a sensing head from its PCB. The
sensor will have been calibrated using this particular
board and therefore will not function correctly with any
other.
Important Notes
Always check the wiring before powering up the
system.
Do not test this sensor with anything other than
Duomo test gas (see 'BX216 Operation' section for
further information). Concentrations above this will
damage the sensor and shorten sensor life. The
installation of this gas detector does not release the
user from observing all the regulations concerning the
characteristics, installation and and the use of gas
SGM595
autosetting
ON
SGM595
autosetting
ON
SGM595
autosetting
ON
300
1600
300
Natural Gas
Carbon
Monoxide
L.P.G
.
SN
Duomo
== BX216 ver. 1.2 ==
Countdown: 90
09:29
J00046
20/Sep/11
SN
Zone 2
Probe 01
000 ppm
__________
Toxic-09:29
J00046
20/Sep/11
Insert Password
0123456789
Insert Password
0123456789
****
Insert Password
0123456789
Password Accepted
the ventilation of the environment and the elimination of
combustion products in accordance with the local
recommendations, regulations and bylaws. For any
damage caused to people, property or animals resulting
from incorrect connection, installation or application of
this gas detector Duomo will not be held responsible or
liable.To ensure correct function after installation Duomo
provide a commissioning service using calibrated test
gases. For this service call 01905 797989.
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Use the up and down keys and then Enter to select an
option;
Time Settings lets you alter the current date and time
of the unit.
Probes Settings lets you select the number of zones to
operate in, the number of sensors attached to the unit
and the pre-alarm gas percentage of each sensor.
General functions lets you control; the relay function,
positive safety function, zone alarm logging function,
external siren and Advanced Features.
(Advanced Features include changing the system
password, viewing the datalogger, printing the log and
testing the sensors).
Exit takes you out of the setup mode and back to the
normal screen.
To set the date and time use the left and right keys to
select day, month, year, hour or minutes and then the
Enter key to change the value. To exit this function scroll
down using the keypad until Back flashes and press
Enter.
Time Settings
General functions
Exit
Probes Settings
Date Clock
20/Sep/2011
Clock battery
Back
12:31
Time Settings
Pre-Al.
TExxxxxxxxxxxxxx
1234567812345678
Back
The BX216 can be configured to control one or two
zones. Pressing the Enter key (while the top line is
flashing) switches between these two options.
Pressing the down key on the keypad then lets you set
each individual zone. An x means that that zone has been
disabled i.e. there is no sensor detected. A means it has
Single Zone
TExxxxxxxxxxxxxx
Probes Settings
1234567812345678
Zone 1 Zone 2
TExxxxxx
12345678 xxxxxxxx 12345678
T
been set to detect toxic gas i.e. carbon monoxide. An
means it has been set to detect explosive gas i.e.
methane.
Once you have set each zone up, move down to the
and press Enter. This will move you into the next screen
that allows you to set the pre-alarm level for each sensor.
(Note: If no sensor is attached to a particular zone you
will not be able to set a pre-alarm level).
The top screen shows the pre-alarm setup for a one zone
system, the bottom screen shows the two zone system.
Use the left and right keys to select a zone that has a
sensor attached and press enter to select the required
pre-alarm level.
The level appears at the top of the screen as shown
above and cycles through the following values;
For explosive gases - 45 - 240ppm in 15ppm intervals
For toxic gases - 3% - 16% LEL in 1% LEL intervals
E
Pre-Al.
xxxxxxxxTExxxxxx 1234567812345678
Back
Pre-Al. 045ppm
TExxxxxxxxxxxxxx
1234567812345678
Back
045ppmPre-Al.
xxxxxxxxTExxxxxx 1234567812345678
Back
Once you have finished you can either go back to the
previous screen to change the number of zones using ,
or Back to go back to the first menu screen.
General Functions
The general function menu allows you to make changes
to the way that the BX216 functions when it is in an
alarm condition.
Use the up and down keys to navigate through each of
the five main options. Press Enter on any one to alter it.
The last option is the Advanced Features menu.
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ON enables Positive Safety which controls how the
main alarm relay operates. It is advisable to enable this
function as it works as a fail safe should you lose
power to the BX216. NOTE: Changing this option alters
how you wire the unit to the gas valve, refer to wiring
diagrams.
Determines whether the main alarm LED remains lit
after the alarm has passed. If set to ON the LED will
remain lit after an alarm condition until the Reset
button is pressed. If set to OFF the LED will turn off as
soon as the alarm condition has passed.
As above.
Active will enable the onboard audible siren in the
event of an alarm. Mute disables it.
You can check the status of the siren by looking at the
Siren LED on the fascia. If it is green it is enabled, if it is
red it has been disabled.
Relay: Continuous
Positive Safe: ON
Latching: ON
Advanced Features
Siren: Active
Back
Advanced feat.
Relay: Continuous
Positive Safe: ON
Latch zone 2: ON
Latch zone 1: ON
Relay: Continuous or Impulse
Positive Safety:ONorOFF
LatchZone1/Latching:ONorOFF
Latch Zone 2:ONorOFF
Siren: Active or Mute
Select this option to change the password that you use
to access the setup menu of the BX216.
Password Change
The top screen shows the pre-alarm setup for a one zone
system, the bottom screen shows the two zone system.
The parameters for each option are as follows;
Controls how the main alarm relay operates in an
alarm condition. Continuous means the relay will
remain activated after the alarm has passed. Impulse
means the relay will activate for 20 seconds and then
revert back to its normal state.
Moving the cursor down to the and pressing Enter will
move you down to the next screen shown below.
To go back to the top menu, press Enter when on .
Password change
Datalogger
Test probes
Print
Factory reset
Back
The advanced features menu has five options as detailed
in the two screens above. Scroll down to the and press
Enter to move down to the second screen and to go
back to the first screen. Select Back to go to the first menu
screen.
New Password
0123456789
New Password
0123456789
1234
New Password
0123456789
1234
Confirmed
The screen above appears. Use the left and right keys and
the Enter key to select a four character password. As each
number is selected it appears as below.
Once you have selected your four characters 'Confirmed'
will appear on the screen and the password is set.
The BX216 stores information on board about the
attached sensors and any detected alarms since
installation.
The complete list of events stored by the datalogger is;
pre-alarms, alarms, faults, blackouts, resets, low battery,
probes enabled / disabled, hard reset.
Use the up and down keys on the keypad to move
Datalogger
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- Event 01 -
23/Sep/11
Probe 10
Select this option to print information contained within
the BX216. (NOTE: These options will only be available
when a printer is connected. Printer not included).
Print
There are two options within this menu; print status and
print datalogger.
'Print status' will print the current status of all zones. It
will show whether or not a sensor is attached and if one
is, what state it is currently in.
'Print datalogger' will print the entire contents of the
datalogger, showing you all events recorded by the
BX216.
Use the up and down keys on the keypad to move
through the events as shown below.
11:58
Pressing the or key will scroll down/up through
recorded events one by one. Pressing the or key
will scroll down/up through five events at a time.
The meaning of the various events is as follows;
Back
Pre-al.
V=02.9V I=18.9mA
When you reach the end of the datalogger, select Back to
return to the previous menu.
Pre-Alarm
The probe stated on the screen has entered pre-alarm
on the date shown and returned the voltage and
current stated.
Alarm
The probe stated on the screen has entered alarm on
the date shown and returned the voltage and current
stated.
Fault
There is a fault with the indicated sensor.
Blackout
Power to the BX216 has been lost. Check incoming
230V power supply.
Reset
The BX216 has been reset using the button on the
fascia following an alarm condition.
Low Battery
The backup battery (not supplied) is running low.
Probe Enabled
The sensor indicated has been enabled using the
internal setup.
Prove Disabled
The sensor indicated has been disabled using the
internal setup.
Hard Reset
The BX216 has been completely reset using the
internal setup. All internal data has been reset
(including sensor setup).
This option shows the voltage and current readings of
the return signals from any attached sensor.
Engineers can use this information to ascertain the
accuracy of the attached sensors and determine if they
need calibrating / trimming. Select Back to return the
previous menu.
Test Probes
Back
Print status
Print datalogger
Back
V=00.6V
1234567812345678
TExxxxxxxxxxxxxx
I=04.2mA
Select this option, then press and hold Enter for 4
seconds until you see the screen below appear.
Continue to hold Enter and the bars will gradually fill in
from left to right until they are all filled white. At this
point the unit will turn itself off and on again and the
factory reset will be complete.
Select Back to return the previous menu.
Factory Reset
Back
Factory reset
Back
V=00.6V
12345678 12345678
TExxxxxx xxxxxxxx
I=04.2mA
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BX216 operation
Maintenance procedure
This detector must be function checked as described above using calibrated test gas every 6 months. To arrange for a
Duomo engineer to conduct this work or to arrange a service contract please call 01905 797989.
Before powering up the BX216 once again check that all electrical connections are correct.
1. Apply 230V supply to the Ph and N terminals.Ensure that the correct fuse is used in the supply. (3 or 5A max.)
2. All of the lights on the fascia will light up in turn.This will take approximately 20 seconds.This checks the function of
all the LED's.
3. The ON LED will remain flashing for about 90 seconds.This is the sensor warm-up period.The gas detector will not
provide gas detection during this period.When the ON light becomes constant the detector is in operation.
4. By pushing and maintaining pressure on the manual TEST button a function test can be performed for all pre-alarm
relays and main alarm relay, together with LED's and audible alarm.
The sequence will be:
a) The pre-alarm threshold (user selected) and Pre-Alarm 1 LED will be actuated.The Pre-Alarm 1 relay
will be changed over.
b) The 20% LEL / 300ppm and Main Alarm LED will be actuated.The Main Alarm relay will be changed over.The
relevant Alarm LED's will light to show which zones are in alarm.
By releasing the the manual TEST button the lights will go out and the audible alarm will cease. If a latched alarm function
on the main relay is configured this will remain on until the RESET button is pressed.
5. In order to conduct a full function test it is essential to use Duomo or equivalent calibrated test gas.The maximum
concentrations are;
- 40% LEL for methane in air
- 350ppm for carbon monoxide
- 0.85% (MOL) for propane
Any higher than this can reduce sensor life. NOTE: NEVER TEST USING NEAT GAS.THIS WILL POISON THE SENSOR.
6. To simulate a sensor fault situation disconnect the sensor plug.The detector will go into a FAULT alarm and the sensor
fault relay will be actuated.
Commissioning
It is strongly recommended that this detector should be commissioned by Duomo Commissioning Engineers or
engineers approved by Duomo to carry out this work. A quotation for commissioning or service will be provided upon
request. Fax site details and preferred date for commissioning to 01905 774296 and the Duomo Service Department will
fax back confirmation.
The benefits of this equipment being commissioned by Duomo are:
On board spares. If for whatever reason this equipment doesn't function correctly Duomo engineers will have spares on
board to ensure that the commissioning is successful.
A Duomo Commissioning Certificate is provided.
It is prudent to make electrical connection to the detector terminal plus when withdrawn and leave the plug off the
detector so that the Duomo Engineer is the first to power up the unit on site. This allows wiring to be checked prior to
commissioning and avoids damage due to incorrect connection. Guarantees for this product will become void if damage
is caused by the installer.
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Troubleshooting
In case of alarm
Extinguish any naked flames.
Do not switch lights or electrical devices on or off.
Open all windows and doors to increase ventilation.
If the 'ALARM' LED is off the levels of gas have dropped. A responsible, qualified person is now safe to find the cause of
the alarm.
If the alarm sound remains constant, and the cause is not evident or possible to eliminate turn off the emergency
isolation valves to the area and contact your gas provider emergency line.They will advice accordingly.
If you are experiencing difficulties, having made the checks listed above call Duomo on 01905 797989 for
technical assistance.
The Problem The Solution
No lights are illuminated on the fascia of the detector Check that the electrical supply is reaching the
device and that the plug in terminal rail is pushed
into place.
The sensor fault light is illuminated
Sensor fault continues to alarm
The detector is subject to repeated alarms
The detector is in a main alarm condition and the
main gas valve is not closing
There is no supply to the solenoid valve
Check that the wiring is correct.
Check that the sensor wiring is correctly terminated
at both the sensor and detector. Check that 12V DC
is present at the sensor.The green light on the sensor
should be illuminated. Pressing the TEST button it is
possible to check the efficiency of the device and if
the sensors have been connected correctly.
Check that the connections are correct and that
power is supplied to the valve i.e. the valve is not
stuck in the open position. The function of the alarm
relays both Pre-Alarm and Main Alarm can be
checked by pressing the TEST button on the detector
fascia. Check that the main alarm action is configured
for a latching alarm (see setting on internal menu).
Check the sensor wiring. If the red Overload LED is lit
a short circuit or overload has occurred on the sensor
or the connecting cable.
Ensure that there is not an occassional gas leak. This
may be due to a valve or joint which leaks under
pressure.
The Main Alarm relay is a volt-free contact, therefore
you must connect the live supply to the common of
the main alarm relay contacts. Check the wiring
diagram in this manual.
Sensor is connected, but no information is shown on
the display.
Check that the sensor is enabled in the internal
menu.
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Technical specification
Power Supply 230V AC 50Hz +/- 10%
Secondary Battery (Not supplied) 12V DC +/- 10%
Power Consumption 30W maximum @ 230V
Power Consumption 25W maximum @ 12V
Relay contact range 10A 230V resistive - 5A 30V DC resistive
1st pre-alarm Can be set from 3% LEL (45ppm) to 16% (240ppm) of LEL
Main alarm Fixed at 20% LEL / 300ppm
Sensor fault Short circuit, interruption, sensor deterioration
No. of remote sensors 16
No. of selectable zones 2
Monitored gas indication Through illuminated display
Input signal 4 - 20mA
Device precision 1% FS
Reaction time <2 seconds
Working temperature -10 °C to 45 °C
Start-up self diagnostic delay 90 seconds
Suitable for use with sensor type SGM595, CO100Ar, CO200A, SG895
Maximum distance for sensor connection 100m
Cable diameter for sensors 1mm2 CSA
Dimemsions 360mm x 320mm x 135mm
Protective rating IP65
Guarantee 3 years from date of manufacture
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