Crowcon Detective Net User manual

H2S
CO
CH4
M070019/ENG
Issue 1 Jul 2013
Detective Net
User & Operator Manual
Detective Net
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3
CONTENTS
Functional Overview ....................................5
Safety Information......................................6
Glossary .............................................10
1. Operation .........................................12
1.1 In the box ...............................................12
1.1.1 Box contents ........................................12
1.2 Device details............................................12
1.3 Connection to Detective ...................................13
1.4 LED indications ..........................................14
1.4.1 LED1 - Power/Learn Mode (Red LED) ....................14
1.4.2 LED2 – Network Status (Red/Amber/Green LED)...........14
1.4.3 LED3 - Alarms (Red LED) ..............................15
1.4.4 LED4 – Master/Slave (Green LED) .......................15
1.4.5 Battery Indication LED (Red LED) .......................15
1.4.6 LED repetition rates ..................................15
1.5 Function buttons .........................................16
1.5.1 Function Button 1 (FB1) ...............................16
1.5.2 Function Button 2 (FB2) ...............................16
1.5.3 Function Button 1 (FB1) & Function Button 2 (FB2) ........16
1.6 System Conguration .....................................17
1.6.1 Switching on a device ................................17
1.6.2 Resetting a device....................................17
1.6.3 Toggle Devices between Master & Slave Functionality......18
1.6.4 Setting Up a Simple Wireless Network ...................18
1.6.5 Network connection test...............................19
1.6.6 Adding additional slave devices to the network ...........20
1.6.7 Removing Slave Devices from the Network ...............20
1.6.8 Power Down master or slave device .....................21
1.6.9 Powering Up a Previously congured network ............21
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1.7 Network Deployment......................................22
1.7.1 Deployment Process..................................22
1.7.2 Force Communication ................................23
1.7.3 Network Topology ....................................24
1.8 Alarms and Alerts ........................................27
1.8.1 Gas alarm ...........................................27
1.8.2 Network Alert ........................................27
1.8.3 Modulated Alert ......................................28
1.9 Network Operation .......................................29
1.9.1 Normal Operation ....................................29
1.9.2 Loss of Connection to Wireless Network . . . . . . . . . . . . . . . . .29
1.9.3 Re-establishing Network Connection ....................30
1.9.4 Detective Net Device - Low Battery Alert .................31
1.9.5 Detective+ - Power Down or Inadvertent Switch Off........31
1.9.6 Internal Fault ........................................31
2. Detective Net specication ...........................32
3. Service and maintenance ............................33
4. Troubleshooting ....................................34
5. Accessories .......................................36
6. RICOCHET™ Mesh Technology .......................37
Warranty .............................................38
Crowcon contacts .....................................40
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Functional Overview
i This manual should be read in conjunction with the Detective+ user manual.
Detective Net is a cable replacement wireless solution for Detective or Detective+ allowing wireless
transmission of gas alarm events between devices.
A gas alarm event on a Detective+ shall cause an alert to be transmitted to all other Detective Net
devices on the network which in turn will cause all Detective+ units in the network to go into alert.
This will ensure that all personnel being protected by the network are alerted to a gas event that may
be remote from their current location.
Detective Net is simply connected to the existing ‘interconnecting cable connector’ and is supplied
with a clip for mounting.
A Detective Net device can be congured as either a master or a slave device and a full wireless
network can consist of one master device master and up to 25 slave devices.
The wireless network can be either congured prior to deployment or once the devices are
deployed. It is also possible to add or remove further slave devices once a network is congured and
operational.
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Safety Information
• Detective Net is a hazardous area certied product and as such must be operated and
maintained in strict accordance with the instructions, warnings and label information included in
this manual. Detective Net must be operated within the limitations stated.
• This document is applicable to Detective Net 433 and Detective Net 868.
• Read and understand all instructions in this manual prior to use.
• Before use ensure that the equipment is in good condition and that the enclosure is intact has
not been damaged in any way.
• If there is any damage to the equipment do not use, contact your local Crowcon ofce or agent
for repair/replacement
• There are no user replaceable internal parts and only Crowcon or Crowcon agent service
personnel can service this product.
• Only genuine Crowcon replacement parts must be used; substitute components may impair
intrinsic safety and invalidate safety certication and warranty of Detective Net.
• Detective Net has a non-rechargeable battery that must only be changed in non-hazardous
(safe) areas by Crowcon or Crowcon agent service personnel
• No live maintenance is permissible
• Observe all warnings and instructions marked on the unit and within this manual.
• If this product is not working properly, read the troubleshooting guide and/or contact your local
Crowcon ofce or agent, for details reference the ‘Crowcon Contacts’ section of the manual
• Risk of static discharge. During installation in a xed location take care to avoid static
generating mechanism. Once installed do not touch certication label on rear of device if a
ammable hazard is present.
• The metal connector shell has a capacitance of 7 pF when measured in accordance with IEC/
EN60079-0. Installations where the resistance to earth of this exposed metal surface is greater
than 1G Ω must consider the potential electro-static charge risk (e.g. in accordance with CLC/
TR 50404 or other relevant publications).
• Detective Net should be used with one of the following interconnection cables, Crowcon part
number E070010, E070012 & E070028, having the following parameters: Cmax = 15 nF/m;
Lmax = 75 uH/m, Rmin = 30 mΩ/m.
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• The entity parameters of Detective Net are:
Uo = 3.7 V Ui = 10 V
Io = 14.3 mA Ii = 25 mA
Po = 8.7 mW Pi = 62.5 mW
Co = 999 uF Ci = 240 nF
Lo = 173 mH Li = 0
Lo/Ro = 2.68 mH/Ω
• When used and installed in accordance with IEC/EN60079-25 and IEC/EN60079-14, Detective
NET is suitable for use in Zones 0, 1, 2 for Groups IIA, IIB or IIC and Temperature Classes T1 –
T4 provided any device(s) Detective NET is connected to also provides an appropriate Level of
Protection, Group Classication and Temperature Classication.
• The following conditions must also be met:
Other Device(s) Other Device(s)
Ui> 3.7 V Uo< 10 V
Ii > 14.3 mA Io < 25 mA
Pi > 8.7 mW Po < 62.5 mW
Ci + Ccable< 999 uF Co >Ccable + 240 nF
Li + Lcable< 173 mH Lo >Lcable
• When Detective NET is connected to multiple other devices the system must be considered per
IEC/EN60079-25.
• Detective Net meets the dielectric strength requirement of clause 6.3.13 in IEC/EN60079-11.
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Certication label
The certication marking is as follows:
Figure 1: Certication label
• Detective Net is certied for use in ambient temperatures in the range -20°C to +55°C (-4 to
131°F).
Applicable Standards
Refer to equipment marking for conrmation of applicable certication before use.
IECEx
IEC 60079-0 6th Edition (2011)
Electrical apparatus for explosive gas atmospheres Part 0: General requirements
IEC 60079-11 6th Edition (2012)
Explosive atmospheres - Part 11: Equipment protection by intrinsic safety “i”
IEC 60079-26 2nd Edition (2009)
Explosive atmospheres - Part 26: Equipment with protection level (EPL) Ga
Ex ia IIC T4 Ga Tamb -20°C to +55°C
IECEx ULD 13.0004X
II 1 G
1180
WARNING - ELECTRO STATIC HAZARD.
REFER TO MANUAL M07006 BEFORE USE.
Ex ia IIC T4 Ga Tamb: -20°C to +55°C
DEMKO 13 ATEX 1255796X
IECEx ULD 13.0004X
2 BLACKLANDS WAY
ABINGDON BUSINESS PARK
OX14 1DY
UNITED KINGDOM
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ATEX
EN 60079-0:2012
Electrical apparatus for explosive gas atmospheres Part 0: General requirements
EN 60079-11: 2012
Explosive atmospheres - Part 11: Equipment protection by intrinsic safety “i”
IEC 60079-26:2007
Explosive atmospheres - Part 26: Equipment with protection level (EPL) Ga
II 1 G Ex ia IIC T4 Ga Tamb -20°C to +55°C
DEMKO 13 ATEX 1255796X
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Glossary
This section details the terms used within this manual.
Detective Net Master Device
One device in each network must be congured to be a master device that will control the network
and all slave devices.
Detective Net Slave Device
A network will consist of one master device that controls the network; all other devices will be slave
devices.
Network Hopping
Network hopping describes the process of the master Detective Net device communicating not
directly with a slave device but by passing the message through another slave device, or ‘hopping’.
Learn Mode
All slave devices must be congured to operate with the master device in the wireless network.
Learn Mode describes the process of learning a slave device to the master device. Slave devices
must be learned to the network prior to deployment.
Gas alarm
A gas alarm is initiated when a Detective+ unit detects gas and goes into alarm with the beacon and
lights in operation.
Network Alert
A network alert is the response of the network to a gas alarm event on a Detective+ unit within the
network.
A network alert will cause all other Detective+ units within the network to go into network alert mode,
beacon and lights will ash at a slower rate than a gas alarm to differentiate it.
Force Communication
If no wireless connection exists between devices, the force communication feature can be utilized to
re-establish communications by pressing any button on a slave device.
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Modulated Alert
A Modulated Alert is a response of Detective Net to a problem with the Detective Net device, for
example if a slave Detective Net device has lost connection to the network a modulated alert will be
sent to the locally-attached Detective+.
The will cause Detective+ to go into Modulated Alert, the beacon and lights will ash for 3 seconds
followed by a 5 second pause; this pattern will then be repeated.
Network Connection Test
Once a network has been congured, deployed and connected to Detective+ units it is possible to
undertake a network connection test to ensure all Detective Net units are congured correctly and
are within range on the network.
A Network Connection Test will cause all devices congured within the network to be placed in
Network Alert for 10 seconds.
RICOCHET™ Mesh Network
Each Detective Net device can provide alternative wireless transmission routes. Should a wireless
connection between two Detective Net devices weaken, the network automatically re-routes
communication via alternative Detective Net device. This creates a mesh type network allowing a
more robust and efcient wireless network.
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1. Operation
1.1 In the box
Remove the Detective Net from the packaging and check for any visible damage. The following
items will be included as standard:
1.1.1 Box contents
• Detective Net
• Connection cable
• Mounting adapter
• Quick start guide
• CD Manual
The box label details the contents.
1.2 Device details
The main components of the Detective Net are shown in Figure 2 below:
Figure 2: Device details
ÀFunction Button 1 (FB1)
ÁFunction Button 2 (FB2)
 Indicator LEDs
à Low battery indicator
ÄCable connector
ÅDetective+ Fixed
Mount Bracket
ÆBracket securing screws
À
Á
Ã
Å
Æ
Ä
Â
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1.3 Connection to Detective
Detective Net is provided with a standard 0.7m interconnecting cable.
If Detective Net is required to be placed remotely from the Detective the standard Detective+ 10m
and 20m interconnecting cable can be used (see Accessories table page 36).
i Only these cables must be used and the maximum cable length must not exceed 20m
otherwise intrinsic safety may be impaired.
Connect the Detective Net to a Detective+ module as shown in below:
Figure 3: Connection
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1.4 LED indications
Detective Net provides four LED indications (numbered 1 to 4) Àto provide information as to the
status of the wireless device, network, alarm or alert. There is also a battery status LED Á.
Figure 4: LEDs
1.4.1 LED1 - Power/Learn Mode (Red LED)
Indicates that the device is either powered up and/or in network learn mode.
Single ash Powered up in normal operation
Continuous ash Device in Learn Mode
1.4.2 LED2 – Network Status (Red/Amber/Green LED)
Indicates the current status of the network connection or the status result of Learn Mode.
LED2 - Single Flash green
Master Device Network okay - all congured slave devices connected to network
Slave Device Network okay - slave has network connection to master device
À
Á
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LED2 - Double Flash amber
Master Device No wireless communication to one or more congured slaves - attempting
to re-establish connection
Slave Device No wireless communication to master - attempting to re-establish
connection
LED2 - Long Single Flash Amber
Master Device Indication to show a slave has just been unlearnt from the network (see page 20)
LED2 - Double Flash red
Master Device Network fault no wireless communication to one or more congured slave
devices
Slave Device Network fault no wireless communication to master
LED2 - Triple Flash Green
Master/Slave Device Learn/Unlearn was successful or force communications was successful
LED2 - Triple Flash Red
Master/Slave Device Learn/Unlearn was unsuccessful or force communications was
unsuccessful
1.4.3 LED3 - Alarms (Red LED)
Indicates a Detective Net gas alarm or a network alert.
Single ash Gas alarm event
Double ash Network alert event
1.4.4 LED4 – Master/Slave (Green LED)
Indicates if the Detective Net is congured as a master or a slave device.
Single Flash green Device congured as Master Device
LED off Device congured as Slave Device
1.4.5 Battery Indication LED (Red LED)
Indicates low battery status on Detective Net device.
Single Flash red Low Battery
1.4.6 LED repetition rates
LED repetition ash rate on start up (i.e. whilst the network is conguring and stabilising) will be once
every 5 seconds.
Once the network is stabilised the ash rate is decreased to once every 30 seconds to conserve
battery life.
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1.5 Function buttons
Detective Net has two buttons (FB1 Àand FB2 Á) that control the functionality of the device.
Figure 5: Function buttons
Button functionality is as follows:
1.5.1 Function Button 1 (FB1)
Hold down for 3
seconds (Device off) Powers up device
Double click Unlearns a slave device from a congured network (master device will also
need to be in learn mode to perform this operation)
Hold down for 3
seconds (Device on) Resets a master or a slave device
1.5.2 Function Button 2 (FB2)
Hold down for 3
seconds (Device on) Toggles functionality between a master and slave device, hold to change a
master device to a slave device or visa
Double click Enter/leave learn mode (slave device will leave learn mode automatically)
1.5.3 Function Button 1 (FB1) & Function Button 2 (FB2)
Hold down for less
than 1 second Initiates a system network connection test
Hold down for 3
seconds (Device on) Powers down device
À Á
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1.6 System Conguration
A Detective Net wireless network can be congured either before deployment of Detective+ units in
an ofce or laboratory environment, or during deployment of Detective+ units in the eld.
The following sections detail how to setup and congure a wireless network.
i This process need only be undertaken once, if a network of congured and learned
wireless devices is powered down, upon being powered up again the devices will retain
the previous conguration and be able to operate immediately.
1.6.1 Switching on a device
XHold down FB1 for 3 seconds.
XThe LED indicators will illuminate sequentially left to right to indicate power up.
i LED1, LED2 or LED4 may be illuminated dependant upon previous congurations these
can be ignored at this stage; the device must now be reset.
1.6.2 Resetting a device
i A reset will cause the device to erase any previous network conguration but will not
change the function of the device. For example if the device was previously a master
device it will continue to be so after a reset but the master will no longer retain any slave
information previously learned. It will effectively become a ‘blank’ master device.
XWith the device powered up, hold down FB1 for 3 seconds.
XIf the device was previously congured a slave device, LED1 will ash 3 times to indicate a
successful reset on a slave device. LED1 will then continue to ash red indicating the device is a
slave device.
XIf the device was previously congured as a master device, LED1 will ash green and LED4 will
ash red 3 times to indicate a successful reset on a master device. LED1 will then continue to
ash red and LED4 will continue to ash green indicating the device is congured as a master
device.
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1.6.3 Toggle Devices between Master & Slave Functionality
Each network requires only one master device; all other devices should be slave devices. One unit
in the network should be congured as a master device and all other units should be congured as
slave devices.
XTo toggle between master and slave functionality press FB2 for 3 seconds.
XIf the device was a slave device and is being toggled to a master device LED4 will ash 3 times
indicating a successful toggle from a slave to a master.
XLED1 will then continue to ash red and LED4 will continue to ash green indicating the device is
congured as a master device.
XIf the device was a master device and is being toggled from a master to a slave device LED1 will
ash 3 times indicating a successful toggle from a master to slave.
XLED1 will then continue to ash red indicating the device is congured as a slave device.
1.6.4 Setting Up a Simple Wireless Network
XTake a device congured as the master device ensuring it has been reset (see Section 1.6.2) and
double-click FB2 to enter learn mode.
XLED1 will continuously ash red, to indicate device is in the learn mode and LED4 will continue to
ash green.
XTake a device congured as a slave device ensuring it has been reset (see Section 1.6.2) and
place a minimum of 1m apart from the master device.
i The slave and master devices must be placed a minimum of 1m apart to ensure correct
operation during normal operation and also when setting up the paired network.
XDouble-click FB2 on the slave device to enter learn mode LED1 will continuously ash red to
indicate the device is in learn mode.
XThe slave device will learn automatically and when complete, LED1 turns off and LED2 will ash
green to indicate the slave is connected to the master.
XIf the learn process is unsuccessful, the slave device will indicate this as LED2 will ash red 3
times to show an unsuccessful learn and LED1 will revert to ashing red to show powered up.
The slave will exit learn mode.
XIf the device had previously been connected to a network, LED2 would revert back to its previous
state and LED1 would remain off.
XThe master device will indicate a successful learn of a slave device by a triple green ash on
LED2 (this will only occur once) and LED1 remains continuously ashing red, indicating the
device is still in the learn mode. LED4 continues to ash green indicating its master status.
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XThe slave device is now congured to the network.
XIf required, further slaves devices can be learnt to the network in the same manner as described
previously.
XIf no further slaves are to be added to the network double-click FB2 button on the master device
to exit learn mode, LED4 continues to ash green, LED2 will ash green to show the slave is
connected to the network and LED1 turns off.
XA network of one master and one slave device has now been congured for use.
1.6.5 Network connection test
Once a network has been congured, deployed and connected to Detective+ units it is possible to
undertake a network connection test to ensure all Detective Net devices are congured correctly and
are within range on the network.
XPress and hold both FB1 and FB2 on either a master or slave device momentarily to initiate a
system connection test.
i A network connection test will cause all devices congured within the network to be
placed in network alert for 10 seconds.
i If a congured device is not placed into network alert upon initiation of the network test, it
may be out of range and must be moved closer to an adjacent device.
i If a congured device cannot be moved closer to an adjacent device, utilising the 10m or
20m cable accessory it can be detached from the Detective + mounting and elevated to
improve wireless connectivity.
i It is important to undertake a network connection test once the network is setup and
deployed. This ensures all devices are functioning and correctly connected to the network.
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1.6.6 Adding additional slave devices to the network
Once a network has been congured further slaves can be added to the network at any time:
XOn the master device, double-click FB2 to enter learn mode.
XTake a device congured as a slave device ensuring it has been reset (see Section 1.6.2 on page 17)
switch on and place a minimum of 1m apart from the master device, then double-click FB2 to enter learn
mode, LED1 will continuously ash red to indicate the device is in learn mode.
XThe slave will learn automatically and when complete, LED1 turns off and LED2 changes to a
single green ash (network OK).
XThe master device will indicate a successful learn of a slave device by a triple green ash on
LED2 (this will only occur once) and LED1 remains continuously ashing red, indicating the
device is still in the learn mode. LED4 continues to ash green indicating its master status.
XThe slave is now congured to the network.
XTo add further slave devices repeat the above process until all required slaves are congured to
the network.
XIf no further slaves are to be added to the network double-click FB2 button on the master device
to exit learn mode, LED4 continues to ash green, LED2 will single ash green to show the slave
is connected to the network and LED1 turns off.
i It is important to undertake a network connection test if slaves are added to the network.
This ensures all devices are functioning and correctly connected to the network.
1.6.7 Removing Slave Devices from the Network
Once a network has been congured if a slave device is to be removed from the network as it is no
longer required, this must be ‘unlearned’ from the network to prevent the network indicating a fault.
If a slave device is removed from a network to which it was previously learned, the master will
indicate a fault by illuminating LED2 .To prevent this, a slave must be unlearned from the network.
XTake the device congured as the master device and double-click FB2 to enter learn mode.
XLED1 will continuously ash red, to indicate device is in the learn mode and LED4 will continue to
ash green indicating master status.
XTake the slave device to be removed from the network and double-click FB1 to enter unlearn
mode, LED1 will ash red continuously, to indicate it is in unlearn mode.
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