Raymond OX-AN R-134a User manual

OX
-
AN
®
F
-
Gas
Environmental
Monitoring System Operation
Manual
Issue
1.7
Manu actured by: Raymond Coupland Ltd Priestley House St Luke’s
Road Kirkby Stephen Cumbria United Kingdom CA17 4HT Telephone
0800 7720894 www.ox-an.com email [e-mail]
Raymond Coupland Environmental
Unit W1
Technology Court
Whinbank Park
Newton Aycliffe
County Durham
DL5 6DA
United Kingdom
Tel: [phone] www.ox-an.com

Contents
1.0 INTRODUCTION ......................................................................................................................................... 1
2.0 SOFTWARE ................................................................................................................................................. 1
2.1 PC S OFTWARE .................................................................................................................................................. 1
2.2 PC XML C ONFIGURATION F ILES ........................................................................................................................... 1
2.3 S IGNAL B OARD PIC18F2550 F IRMWARE .............................................................................................................. 2
2.4 R ELAY B OARD PIC18F2550 F IRMWARE ............................................................................................................... 2
3.0 GETTING STARTED ...................................................................................................................................... 2
3.1 S ENSOR V ALUE T AB ........................................................................................................................................... 3
3.2 O UTPUTS T AB ................................................................................................................................................... 4
3.3 D IAGNOSTICS T AB ............................................................................................................................................. 5
4.0 USER OPERATION ....................................................................................................................................... 6
4.1 T OUCHSCREEN B UTTONS .................................................................................................................................... 6
4.2 A LARM L EVELS .................................................................................................................................................. 6
4.3 F AULT ............................................................................................................................................................. 7
4.4 I SOLATE ........................................................................................................................................................... 7
4.5 T EST ............................................................................................................................................................... 7
4.6 F AN C ONTROL .................................................................................................................................................. 8
4.6.1 Fans On ................................................................................................................................................. 8
4.6.2 Fans Off ................................................................................................................................................. 8
5.0 SYSTEM CONFIGURATION .......................................................................................................................... 8
5.1 C ONFIGURING I NPUTS (S ENSORS ) ......................................................................................................................... 9
5.1.1 Input (Sensor) Properties ..................................................................................................................... 10
5.2 C ONFIGURING O UTPUTS (R ELAYS ) ...................................................................................................................... 10
5.2.1 Output (Relay) Properties.................................................................................................................... 11
5.3 C ONFIGURING I NPUT -O UTPUTS .......................................................................................................................... 12
5.3.1 Output roup Editing .......................................................................................................................... 12
5.3.2 Sound Alarms Output roup ............................................................................................................... 12
5.3.3 Test Output roup .............................................................................................................................. 13
5.3.4 Fan Control Output roup ................................................................................................................... 13
5.4 S YSTEM S ETTINGS ............................................................................................................................................ 13
5.4.1 System Properties................................................................................................................................ 14
6.0 SENSOR LEVEL LOGGING .......................................................................................................................... 14
6.1 F AST L OG T IME ............................................................................................................................................... 15
6.2 S TART N EW L OG ............................................................................................................................................. 15
7.0 HARDWARE .............................................................................................................................................. 16
7.1 S ENSOR AND R ELAY C ARD A DDRESSING ............................................................................................................... 16
7.2 R ELAY B OARD F AIL S AFE F EATURE ...................................................................................................................... 17
8.0 CALI RATION ........................................................................................................................................... 18
8.1 N OTES FOR R-134 A B OARDS ............................................................................................................................. 18

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1.0 Introduction
The OX-AN R-134a Leak detection Monitor provides audible and visual warnings o the presence o
R-134a within a speci ied area. For hazardous areas, the Monitor also provides acilities or
monitoring reductions in Oxygen levels.
Features include:
• Up to 4 × USB based signal capture modules (total 32 sensors)
• Up to 4 × USB based relay modules (total 24 relays)
• .Net based so tware using Windows XP native USB drivers
• 1024×768 Touchscreen inter ace
• Individual sensor inputs so tware con igurable or R-134a or O
2
.
• 4 con igurable alarm levels
• 33 con igurable Output Groups
• Sound Alarms
• Relay speci ic Mute
• Sensor speci ic Isolate
• Sensor value logging
• Alarm logging
• Test Button which can be used to activate any alarm
2.0 Software
The OX-AN R-134a Monitor so tware comprises:
1. PC based application - R134AMonitor
2. PC XML con iguration iles
3. Signal Board PIC18F2550 Firmware
4. Relay Board PIC18F2550 Firmware
OX-AN Monitoring systems are typically con igured prior to delivery and commissioning. I a
so tware upgrade or re-install is required please contact OX-AN Gas Detection Ltd.
2.1 PC Software
OX_AN so tware is designed to run on Windows XP system (SP2) with .Net ramework v3.0. The .Net
ramework is not included within the OX-AN R-134a Leak detection Monitor and hence, i a ull
installation o the operating system is required, these components must be installed separately.
2.2 PC XML Configuration Files
The XML con iguration iles contain the con iguration data or the system settings. These iles are
located in c:\ R134AMonSettings. I these iles require replacement, they can be overwritten by the
new version. There are 4 iles:
1. OutputContainer.sxml

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2. RelayContainer.sxml
3. SensorContainer.sxml
4. SystemSettings.sxml
Note that “restoring system de aults” will overwrite these iles.
2.3 Signal Board PIC18F2 0 Firmware
The irmware located within the embedded boards can only be changed by replacing the PIC
processor with a pre-programmed PIC. Please contact OX-AN i the irmware requires replacement.
2.4 Relay Board PIC18F2 0 Firmware
The irmware located within the embedded boards can only be changed by replacing the PIC
processor with a pre-programmed PIC. Please contact OX-AN i the irmware requires replacement.
3.0 Getting Started
The ollowing procedure should be used when starting the system rom a complete power down.
1. Ensure that power is applied to the UPS
2. Isolate the outputs (using the keyswitch)
3. Ensure that power is applied to the Signal and Relay boards (using the keyswitch)
4. Start the PC (using the key switch)
5. System should automatically run the R134aMonitor program. I this does not occur, run the
application by selecting Start>R134aMonitor>R134aMonitor
6. Enable the outputs (using the keyswitch)
The R134aMonitor application will display the screen shown in Fig 2.0. Note that your system may
display di erent data. There are three screen tabs which can be viewed during normal running. Each
o these tabs is described in the ollowing sections.

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3.1 Sensor Value Tab
Fig 2.0 Sensor Values Tab
During normal running the Monitoring Screen (Fig 2.0) displays the location text, alarm levels, sensor
value and isolate status or both R-134a and O
2
sensors. This is the normal viewing screen.

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3.2 Outputs Tab
The Outputs tab, Fig 3.0, displays the current state o the relay outputs connected to the system.
During normal running the tab shows the location text and relay state or all relays.
Fig 3.0 Outputs Tab

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3.3 Diagnostics Tab
The Diagnostics tab provides a visual and textual indication o the connected Sensor and Relay
boards. It is important the number o connected boards is correctly speci ied in the system settings.
A ault condition occurs i any con igured boards are missing rom the system.
The Diagnostics tab is shown as Fig 4.0
Fig 4.0 Diagnostics Tab

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4.0 User Operation
During normal operation (i.e. not during con iguration) the OX-AN R-134a Leak detection Monitor is
designed or operation via a touchscreen inter ace.
4.1 Touchscreen Buttons
Three touchscreen buttons provide the main unctionality:
Sound Alarms Activates all relays allocated to the Sound Alarms Output roup
Mute Deactivates, for a specified time period, all relays which are activated but set as
muteable
Reset Resets all alarm levels, Test outputs and Fan control outputs
Test Activates all relays allocated to the Test Output roup
Fans On Activates all relays allocated to the Fan Control roup
Fans O Resets all relays allocated to the Fan Control roup – note relays may remain on if
allocated to other active output groups
4.2 Alarm Levels
Each alarm level changes the corresponding line in the sensor list.
Alarm Level 1 Line background LIGHT GREY
Alarm Level 2 Line background AMBER
Alarm Level 3 Line background FLASHING AMBER and AMBER ALARM WARNING visible
Alarm Level 4 Line background RED and RED ALARM WARNING visible
Fig 5.0 shows the system output or a RED alarm state.

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Fig 5.0 Display in Red Alarm
4.3 Fault
The system enters ault state i communications are lost with con igured Relay or Signal Boards.
Fault state is also entered i the user enters con iguration mode or show actual values.
4.4 Isolate
The Isolate warning message is shown i any active sensor is isolated. In isolated state the sensor
does not cause any output activity (i.e. no relays are activated).
For details o how to isolate a sensor see section 5.1.
4. Test
I the Test Output Group has been activated by pressing the Test button, the button is illuminated
and the system displays the Test Status warning message.
I the test warning message is displayed, the system continues to operate normally. To exit Test
mode press the Reset button.

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4.6 Fan Control
The Fan Control buttons activate and reset the Fan Control Output Group. Note that output relays
which are energised by the Fan Control Output Group being activated will not be muteable.
4.6.1 Fans On
The Fans On button activates the Fan Control Output Group. When pressed the button will be
illuminated and the system will show the Fans On warning message. The Fan Control Output Group
can be reset by either pressing the Fans Off button or by pressing the Reset button.
4.6.2 Fans Off
The Fans Off button resets the Fan Control Output Group.
.0 System Configuration
The system provides 4 con igurable alarm levels or each sensor input. Each o these alarm levels can
be programmed to activate an individual Output Group (up to 33) which, in turn, may contain up to
24 relays.
To program the system:
1. Set the number o Sensor boards and Relay Boards
2. Ensure that the Sensor and Relay boards are correctly addressed
3. Set the location text or the relay outputs
4. Allocate the required relays to the individual Output Groups
5. Select the type or each sensor
6. Set the location text or each sensor
7. Set the required alarm levels or each sensor
8. Set the alarm text or each sensor alarm level
9. Allocate the required Output Group to each sensor alarm level
Note that de aults are provided or all settings.
Selecting menu option Settings>Configuration moves the system into the con iguration mode and
displays the screen shown as Fig 6.0.
In this mode the system is still unctional but since the alarm levels cannot be viewed the user is
alerted to a change in the mode by entering the ault state. To exit the con iguration mode choose
the Cancel button to exit without saving, or press the Save button to save changes.
In both cases the system will show “initialising” or approximately 10 seconds be ore returning to
normal operation.
Note saving con iguration changes will cause the system to reset.