Honeywell OELD User manual

OELD
Smart Junction Box
Operating Instructions
Gas Detection

2
OELD Operating Instructions
1 Safety.............................................................................. 3
1.1 Safety Warnings and Information.................................................3
1.2 Disposal ....................................................................................................3
1.3 Waste Electrical and Electronic Equipment (WEEE) Directive ......3
1.4 Important Information.......................................................................4
2 Overview........................................................................ 5
2.1 Introduction............................................................................................5
2.2 Optional Accessories..........................................................................6
2.2.1 Pipe Mount Kit (1226A0358).......................................................6
2.2.2 Ceiling Mount Bracket Kit (1226A0355)................................7
2.2.3 Sunshade (94000A1006)..........................................................7
3 Installation.................................................................... 8
3.1 Siting and Positioning........................................................................8
3.2 Mechanical Installation.....................................................................8
3.2.1 Installation to a Flat Surface ..........................................................9
3.2.2 Optional Pipe and Ceiling Mount Installation........................9
3.2.3 Using the Searchline Excel Mounting Plate.........................10
3.3 Electrical Installation ......................................................................10
4 Electrical Connections............................................11
4.1 Power Supply.......................................................................................16
4.2 Cabling Recommendation............................................................16
4.3 Earth Regimes ....................................................................................16
5 Configuration.............................................................17
5.1 General...................................................................................................17
5.1.1 Threshold for Local Alarm Indication......................................17
5.1.2 mA Input Level Settings.................................................................17
5.1.3 OELD General Display Settings .................................................18
5.2 Configuration Process....................................................................19
6 Operation ....................................................................20
6.1 Display....................................................................................................20
6.1.1 Start-up..................................................................................................20
6.1.2 Normal Operation ............................................................................ 21
6.1.3 Display Screen ....................................................................................22
6.2 Bluetooth® Communication.........................................................23
6.3 Alternative Communications (SHC1 HandHeld Interrogator) ...23
7 OELD Mobile App .....................................................24
7.1 Installing the Mobile App...............................................................24
7.2 Running the OELD Mobile App...................................................24
7.3 Connecting to OELD Units............................................................25
7.4 Configure the OELD device ..........................................................26
7.5 Optima Plus Configuration ...........................................................26
7.6 Calibration.............................................................................................27
8 Maintenance ..............................................................28
8.1 General...................................................................................................28
8.2 Display Module Replacement .....................................................28
9 Faults and Warning..................................................29
10 Specifications ............................................................30
11 Ordering Information ..............................................32
12 Certification and Approvals ..................................33
12.1 EU Declaration of Conformity..................................................33
12.2 Hazardous Area Certification...................................................33
12.3 Performance Approvals ............................................................. 34
12.4 Wireless Approvals ....................................................................... 34
13 Warranty Summary ..................................................36
Contents

3
OELD Operating Instructions
1 Safety
1 Safety
1.1 Safety Warnings and Information
1.2 Disposal
Dispose of the product in accordance with local regulations. The materials used are: -
Enclosure Aluminum alloy or SS316
Lid Aluminum alloy or SS316, Glass
1.3 Waste Electrical and Electronic Equipment (WEEE) Directive
This symbol indicates that this product and/or parts of the product may not be treated as household or municipal
waste. Waste electrical products (end of life) should be recovered/recycled where suitable specialist WEEE disposal
facilities exist. For more information about recycling of this product, contact your local authority, our agent/
distributor or the manufacturer.
WARNING
1. Installation must be in accordance with the recognized standards of the appropriate authority in the country concerned. For
Europe see EN 6007914 and EN 60079292.
2. Do not open the enclosure when energized or when an explosive atmosphere may be present.
3. Operators should be fully aware of the action to be taken if the gas concentration exceeds the alarm level.
4. Do not modify or alter the construction of the product as essential safety and certification requirements may be invalidated.
5. Access to the interior of the product, when carrying out any work, must be conducted only by trained personnel.
6. Measuring function not approved under ATEX. Do not rely on the OELD display backlight status indication for safety-related
purposes.
7. In order to maintain electrical safety, the unit must not be operated in atmospheres of more than 21% oxygen.

4
OELD Operating Instructions
1 Safety
1.4 Important Information
This manual is for use with the OELD smart junction box only.
Honeywell Analytics can take no responsibility for installation and/or use of its equipment if not done so in accordance with the
appropriate issue and/or amendment of the Operating Instructions.
The reader of these Operating Instructions should ensure that it is appropriate in all details for the exact equipment to be installed
and/or operated. If in doubt, contact Honeywell Analytics for advice.
The following types of notices are used throughout these Operating Instructions:
WARNING
Identifies a hazardous or unsafe practice which could result in severe injury or death to personnel.
Caution
Identifies a hazardous or unsafe practice which could result in minor injury to personnel, or product or property damage.
Note
Identifies useful/additional information.
Every effort has been made to ensure the accuracy of this document, however, Honeywell Analytics can assume no responsibility for
any errors or omissions in this document or their consequences.
Honeywell Analytics would greatly appreciate being informed of any errors or omissions that may be found in the content of this
document.
For information not covered in this document, or if there is a requirement to send comments/corrections about this document, please
contact Honeywell Analytics using the contact details given on the back page.
Honeywell Analytics reserve the right to change or revise the information supplied in this document without notice and without
obligation to notify any person or organization of such revision or change. If information is required that does not appear in this
document, contact the local distributor/agent or Honeywell Analytics.

5
OELD Operating Instructions
2 Overview
2.1 Introduction
OELD is hazardous location certified junction box for use with sensors that feature a 420 mA output. The OELD unit has been
designed to operate with the Searchpoint Optima Plus or Searchline Excel range of gas detectors. It provides a local visual status
indication, and a Bluetooth® low energy interface for configuration and maintenance using a Bluethooth®-enabled mobile device.
The OELD unit is ATEX and IECEx approved for use in either Zone 1 (gas) or Zone 21 (dust) hazardous areas as well as being cULus
approved for use in Class I Division 1 or Class II Division 1.
The OELD unit has five entries – either M25 or 3/4” NPT (dependent on the version) and is supplied with three certified blanking
plugs.
WARNING
The plastic transport caps supplied must be replaced with a sensor or suitably certified closers (such as glands or stopping
plugs) prior to commissioning the OELD. Failure to do so presents a potential source of ignition.
Internally, the enclosure features two earth connection points, and an electronics module with two pluggable terminal blocks
for connection of field and sensor wiring. The OELD features a four-color backlight (green, yellow, red and blue), and a custom
7-segment liquid crystal display (LCD). In operation, the LCD backlight provides a status indication as follows:
• Green – Normal operation or Warning
• Yellow – Fault or Inhibit
• Red – Alarm (level is configurable)
• Blue – Bluethooth® pairing / connection
Refer to section 6.1.2 Normal Operation for full details on this feature.
WARNING
Do not rely on the OELD LCD backlight status indication for safety-related purposes.
The OELD is configured using a mobile device (such as smart phone or tablet) over Bluetooth® Low Energy. The following
parameters can be configured:
• Threshold for local alarm notification (red indication)
• 420 mA operational levels for the local display
• Gas name, measurement units and range for local display
• Additionally when using the OELD in conjunction with a Searchpoint Optima Plus or Searchline Excel, the user will be able to gain
full access to all configuration and maintenance parameters of the gas detector.
2 Overview

6
OELD Operating Instructions
Cover
Electronics module
Terminal blocks
Enclosure
Threaded Hole x 5
(M25 or ¾"NPT)
<Figure 1. OELD Exploded View>
2.2 Optional Accessories
Note
The optional pipe mount, ceiling bracket and sunshade accessories are not included as part of the assessment to EN60079291.
2.2.1 Pipe Mount Kit (1226A0358)
<Figure 2. PipeMounted OELD>
The Pipe Mount kit (1226A0358) allows the OELD to be mounted to pipe
from 2” to 6” (50 to 150 mm) in diameter. The kit includes the pipe mount
bracket, two carriage bolts, nuts, and lock washers.
WARNING
When operating in the hazardous location, ensure that the mobile device being used is suitably certified for that area.

7
OELD Operating Instructions
2 Overview
2.2.2 Ceiling Mount Bracket Kit (1226A0355)
<Figure 3. CeilingMounted OELD>
The Ceiling Mount Bracket Kit (1226A0355) allows the OELD to be mounted
to the ceiling. The kit includes two stainless steel ceiling mount brackets, bolts,
and nuts.
Note
When considering the final mounting position using the Ceiling Mount
Bracket Kit, consider the ability to see the OELD display when installed.
2.2.3 Sunshade (94000A1006)
<Figure 4. OELD with Sunshade>
SEARCHPOINTOPTIMA
PLUS C/W SUNSHADE
AND FITTED TO THE
OELD
A sunshade manufactured from 316 stainless steel, is
available which covers the OELD and can extend over either
side to also provide protection to a Searchpoint Optima or
Searchline Excel
The sunshade slots over the OELD mounting bolts so no
additional fixings are required and is stainless steel 316.
Use the sunshade to reduce the effects of direct solar
heating.

8
OELD Operating Instructions
3 Installation
3 Installation
3.1 Siting and Positioning
The placement of gas detectors should be determined following the advice of:
• experts having specialist knowledge of gas dispersion
• experts having knowledge of the process plant system and equipment involved
• safety personnel
• engineering personnel
The agreement reached on the location of detectors should be recorded.
Guidance on the positioning of gas detectors to provide the best detection coverage is contained in IEC/EN 60079292 and other
national Codes of Practice. It is recommended that the installation designer consults these Codes of Practice when determining
where detectors are to be located.
Additionally refer to the technical manual of the gas detector for siting recommendations specific for that device.
3.2 Mechanical Installation
The OELD can be mounted in a number of ways using the integral mounting tabs. The OELD can be attached to flat wall surfaces or
to Unistrut®. With the optional Pipe Mount kit, the unit can be mounted to pipe or pole. A ceiling mount bracket kit (1226A0358) is
also available. If required, conduit (either flexible or rigid) can be run to the OELD.

9
OELD Operating Instructions
3 Installation
3.2.1 Installation to a Flat Surface
The OELD may be fixed directly to a suitable flat surface, using the integral mounting points (dimensions shown below).
Note
When installing OELD ensure that the correct sensor orientation is considered. Refer to the sensor manufacturer’s instructions.
Ensure that mounting bolts are fully tightened and suitable locking washers are used.
7.8"
4.5"
2.1"
0.6"
1.8"
3.2"
6.1"
0.9"
1.2"
1.8"
6.0"
5.6"
1.7"
0.6"
196.9 mm
133.8 mm
52.2 mm
15.9 mm
44.9 mm
80.7 mm
158.78mm
24.0mm
31.8mm
44.9 mm
152.4 mm
124.2 mm
42.4 mm
14.4 mm
<Figure 5. OELD Dimensions>
3.2.2 Optional Pipe and Ceiling Mount Installation
The OELD may be fixed to a vertical pipe of 2"to 6"(50 to 150 mm) in diameter using the Pipe Mounting kit. This kit (1226A0358)
consists of one bracket, two sets of carriage bolts, nuts and lock washers.
The Ceiling Mount Bracket Kit (1226A0355) allows the OELD to be mounted to the ceiling. This kit includes two stainless steel
ceiling mount brackets, bolts and nuts.
<Figure 6. Pipe and Ceiling Mount Installation Examples>

10
OELD Operating Instructions
3.2.3 Using the Searchline Excel Mounting Plate
The OELD may be fixed to the Searchline Excel mounting plate (2104D0237), which is included in the Searchline Excel kits. Two
M10 tapped holes, ‘K’, are provided for mounting the OELD. Refer to the Searchline Excel technical manual for other details. The
mounting plate fixings are not supplied.
Always mount
plate this way
up
<Figure 7. Searchline Excel Mounting Plate>
3.3 Electrical Installation
1. Remove the lid.
2. Lift the handle and take out the electronics module.
3. Fit a suitably approved cable gland or conduit fitting to the required cable entry for the field cable.
4. Fit a sensor to the desired entry referring to the sensor manual for specific information and recommended detector orientation).
Use sealing washers where necessary to maintain the ingress protection rating to IP66/67.
5. Fit suitably certified stopping plugs to all unused cable entries. Use sealing washers where necessary to maintain the ingress
protection rating to IP66/67.
WARNING
The plastic transport caps supplied must be replaced with suitably certified closers (such as glands or stopping plugs) prior to
commissioning the OELD. Failure to do so presents a potential source of ignition.
6. Make the electrical connections (see Chapter 4).
7. Carefully replace the electronics module.
8. Replace and tighten the cover and tighten the locking screw.
Caution
Take care to avoid trapping cables when replacing the display module.
3 Installation

11
OELD Operating Instructions
4 Electrical Connections
4 Electrical Connections
Terminal Block 1 (TB1)
Number Marking Colour Description
1 +V Red Input power +ve
2 V Black Input power 0V
3 mA White mA Signal to Field Wiring
4 +V Red Auxiliary power e.g. Excel cross duct heater
5 V Black Auxiliary power e.g. Excel cross duct heater
Terminal Block 2 (TB2)
Number Marking Colour Description
1 +V Red Sensor power +ve
2 V Black Sensor power -ve
3 mA White mA Signal to gas detector (Optima, Excel, etc.)
4 485A Blue RS485+ to Optima or Excel
5 485B Orange RS485 to Optima or Excel
6 485A Blue Reserved for SHC1 connection
7 485B Orange Reserved for SHC1 connection
<Figure 8. OELD Electronics Module>

12
OELD Operating Instructions
4 Electrical Connections
Caution
When using the SHC1 it must always be connected to the OELD using the SHC Protection Device.
Note
The OELD is protected against accidental reverse polarity connection of power
Spare conductors must be suitably terminated. Wiring must be in accordance with local, national and/or company regulations.
Exposed, bare conductors must be avoided.
The following diagrams show the wiring of the OELD to Searchpoint Optima and Searchline Excel. For other sensors, refer to the
manufacturer’s wiring details.
Caution
The maximum permissible mA loop voltage is 32 VDC and the maximum current is 22 mA.
Connecting the OELD to Searchpoint Optima Plus
<Figure 9. Wiring Diagram for Searchpoint Optima Plus>
Green/Yellow (Safety/Protective Ground)
Red (+24 Vdc)
Black (0 Vdc)
White (420 mA Output)
0 V
+24 Vdc in
420 mA
OELD
Field
Wiring Blue (RS485B)
Orange (RS485A)
The earth bonding arrangement must ensure that the maximum peak voltage between the unit case earth and any field cable
conductor is less than 350V. Voltages in excess of this can cause permanent damage to the units’ internal RFI protection filters.

13
OELD Operating Instructions
Connecting the OELD to Searchline Excel
<Figure 10. Wiring Diagram for Searchline Excel>
Green/Yellow (Safety/Protective Ground)
Red (+24 Vdc)
Black (0 Vdc)
White (420 mA Output)
0 V
+24 Vdc in
420 mA
OELD
Field
Wiring Blue (RS485B)
Orange (RS485A)
The earth bonding arrangement must ensure that the maximum peak voltage between the unit case earth and any field cable
conductor is less than 350V. Voltages in excess of this can cause permanent damage to the units’ internal RFI protection filters.
Connecting the OELD to Searchline Excel Cross-Duct (XD)
<Figure 11. Wiring Diagram for Searchline Excel CrossDuct>
Field
Wiring
Searchline Excel
CrossDuct
Transmitter
Searchline
Excel CrossDuct
Receiver
To Heater
Reflector Panel
Blcak or Brown (+V) Orange (RS485A) White (0 V) Blue (RS485B) Green (Earth) White (mA Output) Black (0 Vdc) Red (+24 Vdc)
Green/Yellow
(Safty/Protective Ground)
Red (+24 Vdc)
Black (0 Vdc)
0 V
+24 Vdc in
420 mA
Green/Yellow (Safety/Protective Ground)
OELD
The earth bonding arrangement must ensure that the maximum peak voltage between the unit case earth and any field cable
conductor is less than 350V. Voltages in excess of this can cause permanent damage to the units’ internal RFI protection filters.
4 Electrical Connections

14
OELD Operating Instructions
OELD Connection for Sensors Configured as Current Sink
<Figure 12. mA Input Sink Configuration>
Sensor Controller
OELD Connection for Sensors Configured as Current Source
Sensor Controller
<Figure 13. mA Input Source Configuration>
Caution
The maximum permissible mA loop voltage is 32 VDC and the maximum current is 22 mA.
4 Electrical Connections

15
OELD Operating Instructions
SHC-1 Connection
WARNING
Do not Attempt to connect SHC1 Handheld interrogator directly to the OELD. Always use the SHC Protection Device.
Connect the SHC1 Handheld Interrogator to the OELD using the SHC Protection Device.
<Figure 14. SHC Protection Device>
Flying Lead
IS Connector
Note
A hot work permit may be required for this procedure.
Carry out the following procedure to connect using the protection device:
1. Isolate all power supplies.
2. Remove the OELD cover
3. Lift out the electronics module and locate the blue and orange terminals market ‘SHC1 485 COMM’
4. Connect the flying leads of the SHC Protection Device to the these terminals as shown:
<Figure 15. Connection for the SHC Protection Device>
SHC Protection
Device Flying Lead
Brown
Blue
5. Connect the SHC1 hand-held interrogator to the IS connector on the end of the SHC Protection Device.
6. Re-apply power.
4 Electrical Connections

16
OELD Operating Instructions
4.1 Power Supply
The OELD requires a voltage supply of 18 - 32 Vdc (nominal 24 Vdc). Power consumption is 2 W maximum.
Refer to individual sensor manuals for sensor specific limits and power consumption.
Ensure that the minimum required supply voltage is present at the sensor, taking into account the voltage drop due to cable
resistance.
Note
Make allowance for the insertion loss resistance.
The maximum loop resistance in the field cable is calculated as follows:
Rloop
Vcontroller
Idetector

Vdetector min


4.2 Cabling Recommendation
The cable used must be appropriate for the hazardous area classification and meet local, national and/or company regulations. The
use of industrial grade, screened field cable is recommended.
An example would be 3-core copper cable with screen (minimum 90% coverage) and suitable mechanical protection (e.g. steel wire
armor) to suit an M25 or 3/4”NPT gland entry or conduit.
The allowable conductor size for the terminals is 0.2 – 2.5 mm² (24 - 12 AWG). The OELD terminals will accept only wire sizes(solid-
core or stranded) in this range. The temperature rating of the conductors should be greater than 80°C. The terminals should be
torqued between 0.5 Nm to 0.6 Nm.
Ensure the cable gland is installed correctly and fully tightened. All unused cable/conduit entries must be sealed with a suitable
certified blanking plug.
4.3 Earth Regimes
Caution
Any earthing regime employed must avoid earth loops.
The following information is provided to assist with proper earthing of the OELD:
• The OELD has two internal earth points provided (see Electrical Connections). This is to facilitate connection of the sensor to
protective earth.
• Field cable screens should be connected to instrument earth at the control room. The other end of the field cable screen should
be suitably terminated or isolated. It should not be connected to internal earth point.
4 Electrical Connections

17
OELD Operating Instructions
5 Configuration
5 Configuration
5.1 General
The OELD has several configurable parameters, which are set using a mobile device running the OELD app. Essentially, these are the
threshold for local alarm indication, mA input level settings, Remove RS485 communication settings, behaviour of the green light
and display settings such as full scale range, measurement unit and gas name.
5.1.1 Threshold for Local Alarm Indication
The gas reading at which the the OELD indicates an alarm (flashing red lights) can be set between 5 and 65 % FSD. The default
setting is 20 % FSD.
Note
This setting is local to the OELD and applies only to the red lights in the OELD backlight. Changing the level will have no effect
on alarm levels configured in the sensor, or in the control room.
Note
Guidance for setting alarm levels appropriate for the application can be found in IEC/EN 60079292 and/or other regional and
local publications.
5.1.2 mA Input Level Settings
The sensor transmits a mA output in relation to the measured gas value. Also the mA output is used to provide an indication of the
status of the sensor which can include warning, fault and inhibit. The mA input to the OELD can be configured to match the mA
output profile of the sensor to control the OELD backlight function and show messages on the OELD display. The factory settings
for Searchpoint Optima Plus and Searchline Excel are given in the table below.
Sensor Status mA Detection Settings
Searchpoint Optima Plus* Searchline Excel
Fault 01 mA 0 mA
Inhibit 2 mA 2 mA
Warning 3 mA N/A
Beam Block N/A 2.5 mA
Low Signal N/A 3 mA
Gas Reading 420 mA 420 mA
OverRange ≥ 21 mA ≥ 21 mA
Note
*Searchpoint Optima Plus with HART® requires a minimum of 1 mA flowing in the current loop for HART® communications to
be maintained. It is possible to set the mA level in the Searchpoint Optima Plus for fault to 1 mA, however this may affect the
reliability of the HART® communications.
To ensure correct reporting of the gas detector status (fault, inhibit, warning and over-range), it is essential that the mA input ranges
are chosen to match those of the connected gas detector. Allow for a separation of at least 0.1 mA between each of the ranges.

18
OELD Operating Instructions
5 Configuration
5.1.3 OELD General Display Settings
The user configurable settings of the OELD display are:
• full scale range
• units of measurement
• reading resolution
• gas name
These settings are used to convert the 420 mA output from the sensor into a reading on the OELD display.
WARNING
Do not rely on the OELD LCD backlight status indication for safety-related purposes.

19
OELD Operating Instructions
5.2 Configuration Process
Note
After configuration or making any changes to the OELD or gas detector settings, the configuration should be read back and
verified to ensure that the intended changes have been made.
Configuration of the OELD is achieved through use of a mobile device running the OELD app. There is no local interface to configure
the OELD.
The configuration process involves connecting to the OELD unit via the Bluetooth® (BLE) interface of a suitable smart phone or
tablet. During the connection, the blue light of the OELD will indicate different states. Once the connection has been successfully
established and if the sensor status is normal, the OELD blue light will be lit solid blue to indicate this. Connect the mobile device to
the OELD as follows:
1. Locate the icon for the OELD App on the mobile device and tap on it to start the app
2. Log into the OELD App by entering the registered User ID and Password
3. Search for nearby OELD units
4. Select the desired OELD from the displayed list
5. The backlight of the OELD will flash blue, confirming your selection from step 4
6. Once the user has confirmed the unit, the connection process will complete
7. The OELD App will display information from the OELD on the main status screen.
For more details on the connection procedure refer to section 6.2 Bluetooth® Communication.
Once the OELD is connected to the mobile device, the user can configure the OELD via the menu system of the app. For more
details on the operation of the mobile application, refer to section 7 OELD Mobile App.
After all operations have been completed, simply terminate the connection from the main screen of the app so that other mobile
devices can connect to it.
Caution
Only one Bluetooth® connection is allowed. Terminate the Bluetooth® connection when the configuration activity has been
completed
5 Configuration

20
OELD Operating Instructions
6 Operation
6 Operation
6.1 Display
6.1.1 Start-up
The start-up and self-test sequence of the OELD takes approximately 60 seconds. During this time the user can check that each
of the functions listed below are operating correctly as well as the OELD checking the correct operation of its critical circuits and
processes. The OELD will perform a series of functional tests, including:
• Display test – each segment of the LCD will be sequentially activated
• Backlight test – each of the colours of the backlight will be activated several times
• Internal hardware and memory checks
• Display of software version
• Display of user-configured settings such as gas name, range and alarm set points
Once the LCD and backlight tests have completed, the green backlight indication will be illuminated for the remainder of the start-up sequence.
Once the OELD has completed this start-up sequence, it will enter its normal operating condition.
<Figure 16. Start-up Sequence>