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Refrigerant Leak Detection System
(RLDS) Installation and Operation
Manual
026-1309 Rev 8
Emerson
1065 Big Shanty Road NW, Suite 100
Kennesaw, GA 30144
770-425-2724 • www.emerson.com
CE/FCC Compliance Notice Information
Class A compliance for RLDS under CE Requirements. Meets Part 15 Subpart B requirements of the FCC Rules. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.
ETL, report no 3151009LAX-001 to:
ANSI/UL 61010-1
CAN/CSA 22.2 No 61010-1 & CE Mark
READ ALL INSTRUCTIONS CAREFULLY
If the equipment is not used in the manner specified by the manufacturer, the protection provided by the equipment may be impaired.
Contents
Table of Contents • v
4.2. E2, E INSTEIN , AND REFLECS C ONTROLLERS (T HE RLDS G ATEWAY B OARD ) ....................................................... 15
4.2.3. Connecting to an E2, Einstein, or REFLECS Site Controller............................................................................. 17
7.15. S ERVICE T IMEOUT .................................................................................................................................................... 28
7.18. A CCESSING A DDITIONAL F EATURES ........................................................................................................................ 28
7.19. DET D IGIPOT ............................................................................................................................................................ 29
7.20. S ENSOR T EMPERATURE C OEFFICIENT ...................................................................................................................... 29
7.21. A CQUIRING T EMPERATURE C OEFFICIENT (F ACTORY U SE O NLY ) ........................................................................... 29
vi • RLDS I&O Manual 026-1309 Rev 8
8.9.4. CO2 Atmospheric Concentration
Table of Contents • vii
10 HAND-HELD TERMINAL (HHT) FOR USE WITH THE GATEWAY AND RLDS CONTROLLER ......... 51
11 MAIN SCREENS ....................................................................................................................................................... 52
11.1. H OME S CREEN (F1 S CREEN )..................................................................................................................................... 52
11.2. RLDS E NABLE S CREEN ............................................................................................................................................ 52
13.5.1. Checking Pump and Bench Diagnostics ........................................................................................................... 63
viii • RLDS I&O Manual 026-1309 Rev 8
1 Introduction
1.1. How to Use This
Manual
This manual provides important information on how to install, operate, and service the RLDS.
Please read this manual carefully before use.
If you have a working knowledge of refrigerant monitors, you will find this manual useful as a reference tool. If you are new to the use of refrigerant monitors, you can educate yourself about the principles of refrigerant gas detection and the proper operation of this device by reading this manual thoroughly.
1.2. Notes
Emerson Electronics and Solutions reserves the right to change the operation or specifications of this instrument at any time without notice.
If any errors or ambiguities are discovered in this manual, promptly inform Emerson Electronics and
Solutions.
No part of this manual may be reproduced or recreated, in any form or by any means, without the express prior permission of Emerson Electronics and
Solutions.
1.3. Safety Precautions
1.3.1. AC Power Supply
Ensure the source voltage matches the voltage of the product before energizing the equipment.
The RLDS uses a universal power supply that is capable of accepting inputs of 100 to 240 VAC, 50/60
Hz. The monitor’s power consumption is 20 Watts.
It is highly recommended that the RLDS be placed on a separate circuit (with UPS or surge protection) and be connected directly to the AC power source.
A switch or circuit breaker rated 1.0 A, 250 VAC, with a minimum terminal spacing of 3.0 mm must be attached to the monitor’s AC power leads. This switch must also be located in close proximity to the monitor, and be within easy reach of the operator.
This switch should also be clearly marked as the monitor’s type of equipment.
• A switch or circuit-breaker must be included in the building installation
• The switch must be in close proximity to the equipment and within easy reach of the operator
• The switch must be clearly marked as the disconnecting device for the equipment
1.3.2. Protective Grounding
Under no circumstances should the RLDS be operated without connection to a protective ground.
Doing so poses a potential shock hazard and is also a violation of electrical safety standards applicable to this type of equipment.
1.3.3. Explosive Atmosphere
Do not operate this equipment in the presence of flammable liquids, vapors, or aerosols. Operation of any electrical instrument in such an environment constitutes a safety hazard.
1.3.4. Proper Exhaust Venting
It is imperative that the exhaust port on this instrument be properly vented as described in this manual. Failure to do so constitutes a safety hazard.
1.3.5. Working Inside Instrument
Extreme care should be exercised when accessing the interior of the monitor. Only qualified electrical maintenance personnel should perform connections and adjustments. Always de-energize the power supply before opening the monitor’s enclosure.
1.3.6. Misuse and Modifications to the Instrument
The protection provided by the monitor may be
impaired if the monitor is used in a manner not specified by Emerson Electronics and Solutions.
Modifications to this monitor, not expressly approved, will void the warranty.
How to Use This Manual Introduction • 1
1.3.7. In Case of Malfunction
Do not continue to use this equipment if there are any symptoms of malfunction or failure. In the case of such occurrence, de-energize the power supply and contact a qualified repair technician or the nearest
Service Center. ONLY the provided knockouts are to be used for electrical and communication wiring.
Drilling into the box will void the warranty.
1.3.8. RLDS Fusing
F1, F2
1AMP, 250VAC
FAST ACTING
(Type “F”)
Table 1-1 - Fusing Requirements
1.3.9. Installation Category
Installation Category II, Pollution Degree II, as defined by UL.
1.3.10. Altitude Limit
RLDS 6,562 ft (2,000 m)
1.3.11. Cleaning
If, during period maintenance inspection it becomes necessary to clean the outside of the case, use a DRY CLOTH . To avoid shock hazard and/or equipment damage, DO NOT USE SOAP AND
WATER.
1.4. Warning and Caution
Statements
1.4.1. Warning Statements
The use of the word WARNING in this manual denotes a potential hazard associated with the use of this equipment. It calls attention to a procedure, practice, or condition, or the like, which if not correctly performed or adhered to, could result in injury or death of personnel using this instrument.
1.4.2. Caution Statements
The use of the word CAUTION in this manual denotes a potential hazard associated with the use of this equipment. It calls attention to a procedure, practice, condition, or the like, which if not correctly performed or adhered to, could result in damage to the equipment.
2 • RLDS I&O Manual 026-1309 Rev 8
2 Functional
Overview
of the fault. All 800# models of the RLDS come with the number of line-end filters (plus one extra) to match the number of zones for each model.
2.1. General Description
Refrigerant monitors are specified to support compliance to federal, state and local safety codes governing refrigerant emissions. Avoiding significant refrigerant loss reduces equipment replacement costs, maintains equipment efficiency, promotes safety, and protects the environment.
The RLDS provides for the continuous monitoring of refrigerant gas levels in up to 16 separate test zones or channels . The instrument is easily programmed to monitor a variety of gases and independent leak
(small), spill (medium), and evacuation (large) levels may be designated for each zone. The instrument also retains a log of previous readings that can be easily accessed for analysis.
An audible alarm and front panel indicators are provided to signal alarm and fault conditions, and relay contacts are provided that can be used to trigger external alarm devices in the event of a system fault, or if a leak (small), spill (medium), or evacuation
(large) level of gas is detected. The system also may be fitted with an optional two-channel 4-20mA current loop board for connection to remote monitoring equipment.
The RLDS requires only minor periodic maintenance such as the occasional replacement of filters. The monitor incorporates active diagnostics that continuously monitor the system for proper operation. A front panel indicator is provided to alert an operator of system malfunctions, and fault codes are generated that enable the user to identify the cause
Figure 2-1 - RLDS Front View
2.2. Communication
Options
The RLDS features full two-way communications via an RS485 interface. MODBUS RTU is the communication protocol standard and can be connected directly to an E2, Einstein, or REFLECS controller.
Please refer to Section 4, Connecting Communication Devices for a more complete discussion of
communication protocols.
2.3. Understanding
Monitoring Levels
Effective use of this instrument requires an understanding of what constitutes reasonable alarm setpoints for the type of gases being monitored.
All AC&R systems leak some refrigerant.
Refrigerant manufacturers define allowable exposure levels and threshold limit values in units of parts per million (PPM). In a good “tight” installation these background levels will be acceptably low and often do not require corrective action. You can reduce nuisance alarms and needless service calls if the alarm levels are set at practical limits.
General Description Functional Overview • 3
Recommended monitoring levels based on compliance to ANSI/BSR ASHRAE 15-2007 and
ASHRAE Safety Code 34-2007 have been developed and are listed in Table 8-1
.
Setting the unit at these recommended alarm levels will satisfy the needs of most users. However, the
PPM levels generated by system leaks into the environment are greatly influenced by the volume of air in the sampling area, air circulation, size of the leak, distance to the monitoring point, and a host of other variables. In some cases the set points may need to be adjusted either up or down to achieve effective monitoring. Please contact your representative
( 770-425-2724 ) for assistance in obtaining these levels.
2.4. Response to the
Presence of Multiple
Refrigerants
The RLDS is a refrigerant level monitor, not a gas analyzer. You must program the monitor to test for a specific refrigerant in each zone, and it will only return accurate concentration readings for that particular refrigerant. If a leak occurs of another refrigerant gas type, the monitor may return false readings.
Most applications only require detection of a single refrigerant and the problems that are associated with monitoring multiple gases are rarely an issue. If there is a possibility of multiple refrigerants leaking in the same sampling zone, you should consider carefully which refrigerant compound you program the unit to monitor, or make system design considerations to cover this event. Please consult your sales engineer for assistance in setting up the RLDS system to cover this event.
line is not at the exact point of the refrigerant leak, the unit will read a diluted mixture of the refrigerant gas and air and may require adjustment of alarm levels.
The farther away an RLDS sample point is from a refrigerant leak, the longer it will take to detect the leak, and the lower the concentration of refrigerant in the air will be; therefore, place the termination of the collection line as near as possible to the point where refrigerant leaks are the most likely.
It should also be noted that refrigerant gas is heavier than air and tends to collect below the point of a leak; therefore, samples taken near the floor will have a greater concentration of gas than those collected above the source of a leak; therefore, sampling points should ideally be located as close as possible to the source of potential leaks. If this is impractical, then the alarm setpoints should be adjusted for that zone to compensate for the dilution of the refrigerant gas. Line-end filters should be mounted 12” (30 cm) to 18” (45 cm) above the floor.
DO NOT block any of the zones. Unused zones may be disabled by setting the distance parameter to zero feet in the zone setup screen.
The RLDS should be centrally located in the mechanical room and be readily accessible for easy visual monitoring and servicing. The combined length of sample tubing, plus exhaust tubing, should not exceed 1200 feet (365 meters) for any zone. The fresh air purge line should draw from an area that does not contain any refrigerant gas. The exhaust line should run to an outside location if possible. The combined length of the purge line and the exhaust line cannot exceed 300 feet (91 meters).
Ideally, two to three pick up points spaced around each chiller will provide sufficient coverage. It may be necessary to perform a “smoke” test of the mechanical room to determine the best locations. The smoke test would provide the pattern of air currents present in the mechanical room.
NOTE: For information about using the
RLDS in wet locations, see Section 3.3.6., Considerations.
2.5. Suggested Location of
Sampling Points
At the point of origin of a refrigerant leak, the gas is highly concentrated. As the refrigerant is dispersed into the air, the gas molecules diffuse, causing a dilution of the original concentration. The RLDS measures the refrigerant concentration at the sample collection point, so if the termination of the collection
4 • RLDS I&O Manual 026-1309 Rev 8
Sample Inlet
Pickup Point
Exhaust Fan
Outside Hallway
Machine Room
Aux
Horn/Strobe
Fresh air purge from area away from refrigerant gas
Chiller
RLDS
Sample Inlet Pickup Points
Figure 2-2 - RLDS Mechanical Room Placement
The user interface on the RLDS is the main interface by which you program the unit, acknowledge alarms, and observe conditions inside of the mechanical room. Note that there are two additional alarm relay contacts in the RLDS that can be programmed to alarm with Leak , Spill , Evacuate ,
Fault , or Monitor On .
Suggested Location of Sampling Points Functional Overview • 5
3
Solenoid
Connections
(this side)
RLDS Installation
Display Screen
Alarm Light
(Red)
System Fault
Light (Yellow)
Monitor ON
Light (Green)
Figure 3-1 - RLDS Diagram
Standard accessories needed for a four (4)-point System:
Accessory
Five (5) Line-End Filters
(Assembly)
Charcoal Filter
RLDS Instruction Manual
Part Number
275-0300
275-0275
026-1309
Table 3-1 - RLDS Accessories and Part Numbers
3.1. RLDS - Installation
Considerations
3.1.1. Warnings and Cautions
WARNING: Explosion hazard! Do not mount or operate this equipment in an area that may contain or in the presence of flammable liquids, vapors, or aerosols. Operation of any electrical equipment in such an environment constitutes a safety hazard.
WARNING: Drilling holes in the RLDS the warranty. Please use the knockouts provided for electrical connections.
enclosure may damage the unit and will void
WARNING: Shock hazard! Always on the interior of the equipment.
de-energize the power supply before working
CAUTION: The RLDS contains sensitive electronic components that can be easily
damaged. Do not to touch nor disturb any of these components.
3.1.2. Inspection
The RLDS has been thoroughly inspected and tested prior to shipment from the factory.
Nevertheless, it is recommended that the monitor be re-checked prior to installation. Inspect the outside of the enclosure to make sure there are no obvious signs of shipping damage. Open the enclosure and inspect the interior of the unit for loose components that may have become dislodged during shipment. If damage is discovered, please contact Technical Support for assistance ( 770-425-2724 ).
3.1.3. Monitor Location
The RLDS should be centrally located in the facility and should be easily accessible for visual monitoring and servicing. Intake sample lines can be up to 1200 feet (365 meters), but it is important to remember that sampling cycle time is proportional to the total number and length of individual sample lines.
Dirt, grease, and oils can adversely affect the operation of the RLDS. The monitor should be installed out of direct sunlight in a clean, dry area that is not subject to temperature or humidity extremes.
Installation of the monitor in a mechanical room is acceptable provided reasonable environmental conditions exist. If there is a question, consider installing the unit outside of the mechanical room in a cleaner area of the facility. The location should allow the monitor to be easily accessible for visual monitoring and servicing.
3.2. RLDS Mounting
Instructions
3.2.1. Screw Locations
The RLDS should be installed plumb and level and securely fastened to a rigid mounting surface. The enclosure utilizes keyhole mounting brackets
6 • RLDS I&O Manual 026-1309 Rev 8
designed for 1/4” (6.35 mm) fasteners. Locate the four screws as shown in the diagram below and allow the screw heads to protrude approximately
1/4” (6.35 mm).
installed to vent residual gas away from the monitor.
All air line connections, located on the left side of the
enclosure, are indicated in Figure 3-3 .
2 1/32”
2 55/64”
13 9/16”
9 5/16”
TOP
12 1/4”
8 55/64”
Mounting Instructions
Four 1/4 inch fasteners are required to mount the RLDS enclosure. Allow approximately
1/4 inch of each fastener to remain exposed.
The enclosure can slide directly onto the screw heads for mounting. Verify the position of enclosure on the fasteners, and then tighten all fasteners.
Not To Scale
Figure 3-2 - RLDS Mounting Dimensions
3.2.2. Installation
Hold the monitor flat against the mounting surface and allow it to slide down, engaging the screw heads in the keyhole slots of the mounting brackets. Adjust the screws as necessary to hold the monitor securely against the mounting surface.
3.3. RLDS - Connecting Air
Lines
3.3.1. Overview
Individual sample lines are run from the RLDS to each area of the facility to be monitored. Additionally, a purge line is installed to provide clean air for resetting the infrared zero baseline. An exhaust line is
Exhaust
Port
Inlet/Purge
Ports
Figure 3-3 - RLDS (Tubing Connections)
3.3.2. Tubing Considerations
Use 1/4” (6.35 mm) outside diameter (0.04” wall)
(1.02 mm wall) flex tubing for all air lines or equivalent. The tubing should be clean and free of residual moisture or other contaminants. The tubing should be cut cleanly with a sharp knife and care should be taken not to distort the tubing end.
To connect the air lines to the monitor simply push the tubing firmly onto the connector. To remove a line, depress the plastic ring on the connector with one hand while withdrawing the tube with your other hand. All tubing bends should have a radius of no less than 5” (12 cm) to ensure proper airflow. If kinks or obstructions occur in any of the air lines, the instrument may not function properly.
3.3.3. Connecting Purge Line
A purge line is required to draw fresh air into the instrument and should not exceed 300 feet (91 meters) in length. A charcoal filter assembly has been
RLDS - Connecting Air Lines RLDS Installation • 7
provided to ensure clean air is being drawn in through the purge line. This filter should be mounted close to the RLDS.
It is advisable to terminate the purge line outdoors, provided the input is not exposed to rain, snow, ice, exhaust fumes, or other airborne contaminates. If an outdoor installation is impractical, the line should be run to an area inside the facility that you are certain is not contaminated with ambient refrigerant gas.
A line-end filter should be attached to the end of the purge line. If this is not possible, an optional charcoal filter assembly ( P/N 275-0275 ) can be used to filter refrigerant from the purge line, and may be mounted adjacent to the monitor. A line-end filter assembly ( P/N 275-0300 ) should be attached to the end of the purge line when the charcoal filter is not used.
increase monitoring capacity. Please contact
Technical Assistance ( 770-425-2724 ) for more information.
Sample intake lines can be up to 1200 feet (365 meters) when no exhaust tubing is used. Otherwise, the combined length of the sample line and the exhaust line cannot exceed 1200 feet (365 meters).
All line terminations should be positioned to reduce the possibility of mists, aerosols, oil, water, dust, or other contaminates being drawn into the instrument.
A line-end filter (included) should be attached to the end of each sample intake line. Line-end filters should be placed 12” to 18” (30 to 45 cm) above the floor.
IMPORTANT: DO NOT block any of the zones.
Unused zones may be disabled by setting their length parameter to zero feet in the Zone Setup screen
( Section 8.2., The Zone Screen ).
Please refer to the earlier section
( Section 2.5., Suggested Location of Sampling
) to learn more about where to locate the monitoring points.
CAUTION: (CO
2
Only): Because CO
2
is
gas. An atmospheric CO
present in ambient air, the purge line MUST
BE run outside, away from any known sources of CO
2 2 concentration value can be manually entered by the user in the CAL screen. CO
2
is supported by RLDS-CO
2 units. See Section 8.9.4. CO2 Atmospheric Concentration (RLDS-CO2 Units Only).
3.3.4. Connecting Exhaust Line
An exhaust line (¼” OD tubing) (6.35 mm) can be used when it is required to vent gas samples away from the instrument and should not exceed 300 feet
(91 meters). The exhaust line should terminate in a location that is completely isolated from the purge line termination point and other areas of the facility that will be monitored. Ideally this line should terminate outdoors in a location that is not exposed to the elements. This line does not require a line-end filter. If the exhaust line terminates outside the building, position the tubing so that no water or moisture can enter it.
3.3.5. Connecting Sample Intake
Lines
The RLDS is designed to accommodate up to 16 separate sample intake lines. The standard configuration of the unit includes one manifold of four intake connectors and one purge connector.
Additional manifolds can be easily installed to
CAUTION: The introduction of contaminants through the air intake lines can result in serious and permanent damage to the monitor.
3.3.6. Considerations
For maximum protection, the RLDS may be shut down when a System Fault occurs. This might be desired, for example, when the RLDS is used in wet locations such as meat preparation rooms. When water is pulled into the system, a System Fault will occur, closing the fault relay located at the bottom of the main control board. To turn power off to the
RLDS when this occurs, wire the fault relay into a spare 16AI input. Route the power supply to the
RLDS through an 8RO output using the normally closed contacts. Program the E2/Einstein to alarm the fault input on a contact closure and turn on the 8RO output when this occurs. This can be done using a
Digital Sensor Control application in the E2/Einstein.
Refer to the E2 Installation and Operation manual
( P/N 026-1614 ) for details on setting up a Digital
Sensor Control application.
8 • RLDS I&O Manual 026-1309 Rev 8
3.4. Splitter Kits
3.4.1. Overview
Two-way splitter ( P/N 275-0304 ) and three-way splitter ( P/N 275-0305 ) kits for a zone are used with the RLDS to allow you to pinpoint critical points of the refrigeration system, and allow further monitoring in small spaces with a high probability for leakage.
Splitter kits allow you to place more sensors in each zone, which enable potential leaks to be detected more quickly.
CAUTION: Keep pick-up tube the same length to create the averaging effect of the splitter avoid moisture collecting in the filter from condensation.
system. Point the filter vertically downward or horizontally with a slight downward tilt to
Figure 3-4 - Types of Splitter Kits
3.4.2. Installation
Sensors can be installed on walls, drains, or areas with potential air flow. Any ¼” tubing can be used to configure the two or three point sensors.
Figure 3-5 - Proper Wire Length of a Two-way Splitter
Figure 3-6 - Improper Wire Length of a Two-way Splitter
The alarm setpoint must be changed due to the averaging effect of the splitter system. The pick-up lines for the splitter tube must be the same length from the splitter to each of the end-of-line filters to balance the splitter system and create the averaging effect.
A two-way splitter kit requires reduction of the original alarm setpoint by ½ so the setpoint becomes half of the original value. A three-way splitter kit requires reduction of the original setpoint by ⅓ so the setpoint becomes a third of the original value.
For example, if the alarm setpoint alarm value is
1000, with a two-way splitter the value becomes 500
PPM. With a three-way splitter the value becomes
333 PPM.
Part Number
275-0304
275-0305
270-0810
Description
Two-way Splitter Kit contains:
1 two-way push-fit splitter,
2 line-end filters
(tubing not included)
Three-way Splitter Kit contains:
1 three-way push-fit splitter,
3 line-end filters
(tubing not included)
¼” Sample Tubing (100 ft.)
Table 3-2 - Splitter Kit and Tubing Part Numbers
Splitter Kits RLDS Installation • 9
3.5. RLDS Interior
IR Bench
Gas In
Intake
Manifold
Solenoid
Connectors
Universal
Power Supply
AC Input
Ground Stud
IR Bench
Gas Out
AC Input
Terminals
Main
Board
Intake
Manifold
Solenoids
Hydrophobic
Filter
AC Input
Ground
Stud
Dual 4-20 mA
Outputs Option
Card Socket
Dual 4-20 mA
Outputs (Signal
Out Only)
Screw Terminal
Gas Sample
Pump
Figure 3-7 - Diagram of RLDS Interior
Microcontroller
Board
RLDS
Main Circuit
Board
Factory
Default 4-20 mA Output Only
(DO NOT APPLY POWER) AC Input
Terminals
Relay Connector
Alarm 1,2,3 Fault
RS485
Connector
CPU
Reset
Terminator
Switch
Microcontroller
Board
Figure 3-8 - RLDS Processor Board Layout
Relay Connectors:
Leak, Spill, Evacuate,
Fault
RS485
Connector
Figure 3-9 - Relay, RS485, and AC Input Connections
10 • RLDS I&O Manual 026-1309 Rev 8
Factory
Default
CPU
Reset
Figure 3-10 - Switch and Fuse Locations
Line Fuses 1
1 Amp, 250 V
NOTE: The plastic cable ties surrounding the air pump are to ensure safe handling during shipment. Remove before operating the unit.
Reinstall a plastic cable around the air pump if the unit is shipped back to Emerson Electronics and
Solutions for service or repair. This prevents damage during shipment.
3.6. RLDS Electrical Wiring
The RLDS uses a universal power supply that is capable of accepting inputs of 100 to 240 VAC, 50/60
Hz. The monitor's power consumption is 20 Watts. It is highly recommended that the monitor be connected directly to the AC power source, preferably on its own circuit. The AC power connection should be completed with UL approved 3-conductor wire
(minimum 16 AWG), rated 300 VAC at 221°F
(105°C).
Locate a convenient service knockout and install electrical conduit in the typical manner.
Locate the AC Input Terminals and Ground Stud on the inside of the monitor (
). Secure the incoming AC power neutral (white/blue) and live
(black/brown) wires to the LINE 1 and LINE 2 terminals.
Using the supplied crimp-on ring terminals, washers, and nuts, connect the incoming AC power ground wire (green) to the monitor's AC input ground stud, and then install a separate wire between the ground stud and the GND terminal.
NOTE: For more information on power specifications, contact your Emerson
Electronics and Solutions representative for more information.
Locate the AC power connector on the inside of the instrument and remove it from the circuit board.
Secure the wire leads to the connector orienting them as shown in the diagram. Carefully plug the connector back onto the circuit board. finally, locate the ground lug and securely fasten the ground lead.
A second connector is provided to wire an external device through the RLDS power circuit. Locate the connector and complete the wiring as described above.
3.6.1. Warnings and Cautions
WARNING: Electrical installation should be performed by a certified electrician and must comply with all applicable local, state, and federal electrical safety codes.
WARNING: Under no circumstances should this instrument be operated without connection to a protective ground. The AC power ground wire must first be connected to the monitor's ground stud. Doing so poses a potential shock hazard and is also a violation of electrical safety standards applicable to this type of equipment.
WARNING: Copper conductors for connection to supply mains must be made in accordance with NEC/CEC and local codes.
WARNING: Drilling holes in the RLDS enclosure may damage the unit and will void the warranty. Only use the knockouts provided for electrical connections.
• A switch or circuit breaker rated 1.0 A, 250
VAC must be attached to the unit’s AC power leads.
• This switch must also be located in close proximity to the monitor, and be within easy reach of the operator.
• This switch should also be clearly marked as the unit’s main AC disconnect device. The circuit breaker or switch must disconnect all
RLDS Electrical Wiring RLDS Installation • 11
current-carrying conductors (i.e., Live and
Neutral).
Figure 3-11 - AC Input Power and Ground Connections
12 • RLDS I&O Manual 026-1309 Rev 8
4 Connecting
Communication
Devices
4.1. E2 MODBUS Direct
Support for RLDS
4.1.1. Network Connection to E2
Connecting an RLDS to an E2 unit requires the E2 version 3.01 and above. Contact Emerson Electronics and Solutions for upgrade information if the controller is a version prior to 3.01.
4.1.1.1. COM Port Associations - E2
Versions 3.xx and Below
E2 PIB COM PORT ASSOCIATIONS
E2 Enclosure (Right Side)
E2 Modem/Expansion
COM Card Mounted
Above PIB RS232
COM6
COM4 and COM6, which are optional ports requiring expansion cards). COM ports can only be used for one function; in other words, if COM2 is set up as the I/O network, you cannot connect MODBUS devices to
COM2. Ensure your E2 is equipped with an RS485
COM Card (P/N 637-4890) and configured in E2
General Services ( , Serial tab) to enable COM4 or an E2 Expansion COM Card (P/N
637- 4871) to enable COM6.
Connect the MODBUS network cable to the three-terminal connector on the COM port you wish to assign as MODBUS. Wire RS485+ to the RLDS+
RS485- to the RLDS- and the shield cable to the
RLDS GND.
4.1.1.2. COM Port Associations - E2
Versions 4.0 and Above
E2 PIB COM PORT ASSOCIATIONS
E2 Enclosure (Right Side)
COM1
Plug-In
Modem
Card
Serial Device
RS232 Port
COM3
POWER INTERFACE BOARD
(PIB)
COM3
Plug-In
Modem
Card
RS485 COM Card
(2 Connectors)
COM4
RS485
COM1
Serial Device
RS232 Port
POWER INTERFACE BOARD
(PIB)
Serial Device
RS485 COM Ports
COM2 COM6 COM4
COM2
Serial Device
RS485 COM Port
(2 Connectors)
Figure 4-1 - Location of E2 COM Ports - E2 PIB Board (E2 version 3.xx and below)
An E2 has up to three COM ports that can be assigned for MODBUS communication (COM2, an
RS485 port on the E2 power interface board, and
Figure 4-2 - Location of E2 COM Ports - E2 PIB Board (E2 version 4.0 and above)
An E2 has three COM ports that can be assigned for
MODBUS communication (COM2). COM ports can only be used for one function; in other words, if
COM2 is set up as the I/O network, you cannot connect MODBUS devices to COM2. Ensure your E2 is configured in E2 General Services ( ,
Serial tab) to enable COM4 or COM6.
E2 MODBUS Direct Support for RLDS Connecting Communication Devices • 13
Connect the MODBUS network cable to the three-terminal connector on the COM port you wish to assign as MODBUS. Wire RS485+ to the RLDS+
RS485- to the RLDS- and the shield cable to the
RLDS GND.
4.1.1.3. E2 Termination
For E2 versions 3.xx and below, if the E2 will be the first device in the daisy-chain, set the port’s termination jumpers to the TERMINATED &
BIASED position (all three jumpers UP); otherwise, set all jumpers DOWN if not the first device.
For E2 versions 4.0 and above, if the E2 is the beginning of all RS485 I/O or MODBUS Networks, all three of these jumpers should be set to the UP position. For MODBUS, the jumpers should all be in the top-most position ( MOD ). For I/O Net, the jumpers should be in the middle position ( I/O ). For no termination, set the jumpers to the down position
( NO ).
4.1.2. E2 Setup of RLDS
4.1.2.1. Set Up Network Ports
Before setting up a RLDS, the port on the E2 that has the MODBUS cable connected must be set up as a
MODBUS port.
1. Log in to the E2 with Level 4 access.
2. Press followed by - General
Controller Info .
3. Press + to open the Serial tab of the
General Controller Info setup screens:
Figure 4-3 - Serial Communications Manager Screen
4. This screen will have a “Connection” field for all COM ports on the E2. Highlight the COM port connection field that will be used, and press - LOOK UP . From the list of network types, select MODBUS .
5. Four fields will become visible underneath the
COM port connection field, which pertain to the way the device communicates:
• Baud - Default setting is 19200 . Leave this field at the default value.
• Data Size - Leave this field at the default value ( 8 ).
• Parity - Leave this field at the default value
( None ).
• Stop Bits - RLDS value is one ( 1 ).
6. Press to save changes and exit.
4.1.2.2. Add and Connect RLDS
To enable communications between E2 and the
RLDS, the devices must be added and addressed in
E2.
1. Log in to the E2 with Level 4 access.
2. Press - Connected I/O Boards
14 • RLDS I&O Manual 026-1309 Rev 8
and Controllers .
Figure 4-4 - Connected I/O Screen
3. On the ECT tab screen enter the number of
RLDS Panels in the RLDS number field.
4. Press to return to the Network Setup menu, then select - Network Summary
(
5. Locate the RLDS you added to the network list
(press and to scroll through the list) and highlight with the cursor. Press
Setup.
for
• Online - The RLDS is communicating normally.
• Offline - The RLDS is not communicating, has not been commissioned, is not functional, or is not powered up. Verify the
RLDS is powered up, wired correctly, and has the proper network address, baud rate, and parity.
• No Port - No port is set up in the E2 Serial
Configuration Manager to be a MODBUS port.
7. To commission the device, select
Commission and choose the MODBUS network address.
-
Figure 4-5 - Network Summary Screen
Each RLDS is assigned a MODBUS address automatically when it is created.
6. Locate the RLDS you set up, and look at each device’s status in the Status field. You will see one of the following messages:
E2 MODBUS Direct Support for RLDS Connecting Communication Devices • 15
4.2. E2, Einstein, and
REFLECS Controllers
(The RLDS Gateway
Board)
12
12 JP7
Figure 4-6 - RLDS Gateway Board Layout (P/N 810-3760)
In addition to being an interface with the site controller, the Gateway Board also allows you use a
Hand-held Terminal (HHT) device to program the
RLDS and view status.
4.2.1. Powering the Gateway Board
Input Voltage
Power
24VAC, Class 2, 50/60Hz
Table 4-1 - Gateway Power Requirements
5VA
The Gateway board requires 24VAC power from a
Class 2 center-tapped transformer.
Emerson Electronics and Solutions supplies several sizes of center-tapped transformers for powering multiple 16AIs, 8ROs, and other RS485 peripheral boards of the E2, Einstein, and REFLECS systems.
Refer to your controller’s user manual for information on how to use the center-tapped
transformers listed in Table 4-2
to power multiple
RS485 I/O devices.
Figure 4-7 shows how to connect the 56VA and
80VA transformers to the Gateway power connector.
P/N
Power Rating
Three-Board
640-0056
56 VA
Six-Board
640-0080
80 VA
Table 4-2 - Power Ratings for Emerson Transformers NOTE: Before installing the Gateway board, verify that jumper JP7 (if present on the board) is set to the “NORMAL” position (not the
“TEST” position). Operating the Gateway with the jumper in TEST position may cause board damage.
The RLDS may be connected to an Emerson
Electronics and Solutions controller using a Gateway
Board. The Gateway Board is a special interface device that allows an E2, Einstein, or REFLECS site controller to communicate with up to three RLDS units as if each of them were a standard 16AI Analog
Input board, and allows for programming with the
Hand-Held Terminal (HHT).
The Gateway Board communicates with the RLDS units via the MODBUS network, which is connected to the Gateway’s “Receiver Bus” network terminal. The Gateway communicates with site controllers (E2, Einstein, or REFLECS) via the
RS485 I/O Network (COM A & COM D for
REFLECS).
Figure 4-7 - Pinout for the 56VA (640-0056) and 80VA (640-
0080) Transformers
16 • RLDS I&O Manual 026-1309 Rev 8
4.2.2. Gateway Board Networking
To connect the Gateway to an RLDS, punch out one of the remaining service knockouts to gain access to the interior of the RLDS monitor. Locate the RS485 connector and remove it from the circuit board.
Secure the wire leads to the connector orienting them as shown in
Figure 4-8 . When you are through secur-
ing the connections, carefully plug the connector back onto the circuit board.
4.2.2.1. Changing Terminator Switch
Settings
The terminator switch is shipped from the factory in the terminated or DOWN position. This is the correct setting if the RLDS is connected to a single device, or it is the last device on the network chain. If the RLDS is to be installed in the middle of a network, the terminator must be moved to the UP position.
Locate switch 4 and determine its position. If it needs to be moved, slide the switch to the appropriate position.
LEFT
RS-485
Terminator
Switch
UP (Not Terminated)
Gateway Board
RS485 -
GND
RS485 +
0v
I/O Net
Side view of double-stack
Modbus
connector
on Gateway
Figure 4-8 - RLDS and Gateway Board Wiring
DOWN (Terminated)
Termination is set using switch 4 (SM1)
1 2 3 4
Figure 4-10 - Positioning the Termination Switch - RLDS
4.2.2.2. RLDS Node Address
The node address is set through the front display of the RLDS unit. Refer to Section 7.16., Node Address for more information.
NOTE: If connecting RLDS units to an
Emerson Electronics and Solutions site
controller network, you MUST number the units from 1-3. The Gateway Board will not recognize any RLDS unit with a number that is not 1, 2, or 3.
Figure 4-9 - RS485 Connector - RLDS
E2, Einstein, and REFLECS Controllers (The RLDS Gateway Board) Connecting Communication Devices • 17
4.2.3. Connecting to an E2, Einstein, or REFLECS Site Controller
Up to three RLDS units may be connected to a site controller via the Gateway Board. The node address switch on each RLDS must be set in succession from
1 to 3 in order for the Gateway Board to recognize the units on the network.
If the Gateway Board is at the end of a network, the Gateway Board’s “Receiver Bus” termination jumpers must be set to the “termination” position
(Figure 4-12) . Otherwise, the jumpers should be set
to the “no termination” position.
E2, EINSTEIN, OR REFLECS
SITE CONTROLLER
GATEWAY BOARD
CONTROLLER
RS485 I/O NETWORK
TERMINATE
RECEIVER BUS
JUMPERS
RLDS LEAK DETECTORS
TERMINATE
"DOWN"
UNTERMINATE
"UP"
MODBUS NETWORK
Figure 4-11 - RLDS Units Connected to Gateway, Site Controller
Termination
The three RLDS units and the Gateway Board are connected serially via MODBUS. If an RLDS is at the end of the network segment, terminate the unit by setting the termination switch to the DOWN position.
Otherwise, set the termination switch to the UP position to leave the unit unterminated.
Figure 4-12 - Gateway Board Termination Jumpers
Network Wiring
For network wiring, use Belden #8762 or #8641 cable or equivalent. The total length of network cable in this configuration may not exceed 4921 feet
(1499 meters).
4.2.4. Connecting the Gateway
Board to the E2, Einstein, or
REFLECS Network
Each E2, Einstein, or REFLECS site controller that will communicate with one or more RLDS must have a Gateway Board installed on its RS485 I/O
Network. For E2 and Einstein controllers, this means the Gateway will be installed on the RS485 I/O
Network; for RMCC, BEC, BCU, and other
REFLECS products, the Gateway will be installed on the COM A or COM D network.
4.2.4.1. Wire Connection
Using shielded three-conductor network cable
(Belden #8641 or equivalent), connect the RS485 I/O
Network wire to the three-terminal connector on the
Gateway board as shown in
information about how RS485 networks are configured, refer to your site controller’s user manual.
18 • RLDS I&O Manual 026-1309 Rev 8
Figure 4-13 - Connecting the Gateway to the RS485 Network
4.2.4.2. Setting the Board Numbering Dip
Switch
The first step is to determine whether the RLDS
Gateway should emulate 16AI boards – known as the
REFLECS mode, or if the RLDS Gateway should emulate IRLDS units in Einstein/E2 – known as the
Einstein mode. When dip switch 8 is in the ON position it selects the REFLECS mode, and when dip switch 8 is in the OFF position it selects the Einstein mode.
REFLECS Mode
In the REFLECS mode the Gateway board responds as a series of three 16AI Analog Input boards numbered in succession. Addressing the “boards” represented by the Gateway is achieved by setting dip switches 1 through 4 to the first board number to be used. When this number is set, the Gateway will also use the next two board numbers above the first board number. For example, if a Gateway dip switch is set to board number 3, the Gateway will use board numbers 3, 4, and 5 on the I/O Network.
Once the RLDS Gateway has been added to the network, the I/O Board Device Numbers screen in
REFLECS (from the REFLECS Home screen press
7 , 7 , 2 ) will also need to be adjusted to show the correct number of input boards. This number should be the total number of input boards plus the number of
RLDS units.
Since the RLDS Gateway can support up to three (3)
RLDS units, the first RLDS unit maps to the first
RLDS Gateway address, and the second RLDS unit maps to the second RLDS Gateway address; therefore, if the RLDS Gateway address = 3, then
RLDS unit #1 will appear on 16AI #3 and so forth.
If you are not using all three RLDS units, you can disable them on the Gateway (see Section 11.2.,
RLDS Enable Screen ). If they are disabled on the
RLDS Gateway, then the corresponding addresses are free to be used by other 16AI boards.
Note that because the Gateway reserves three 16AI
Board numbers for its own use, an I/O Network with a Gateway is limited to thirteen (13) 16AI boards.
Note also that since 16 is the highest board number possible, a Gateway’s dip switch may not be set to any number above 14.
Einstein Mode
In the Einstein mode the Gateway board responds as a series of three IRLDS units numbered in succession. Addressing the “boards” represented by the Gateway is achieved by setting dip switches 1 through 4 to the first unit number to be used. When this number is set, the Gateway will also use the next two board numbers above the first board number. For example, if a Gateway dip switch is set to board number 4, the Gateway will use IRLDS numbers 4, 5, and 6. Once the RLDS Gateway has been added to the network, the Connected I/O Boards and Controllers screen in E2 (from the E2 Main Menu press 7 , 7 , 2 ) will also need to be adjusted to show the correct number of IRLDS units. This number should be the total number of RLDS, IRLDS II, and MRLDS (up to
16 can be mapped to one IRLDS) units being used on that Einstein/E2.
Since the RLDS Gateway can support up to three (3)
RLDS units, the first RLDS unit maps to the first
RLDS Gateway address, and the second RLDS unit maps to the second RLDS Gateway address; therefore, if the RLDS Gateway address = 4, then
RLDS unit #1 will appear on IRLDS #4 and so forth.
If you are not using all three RLDS units, you can disable them on the Gateway (see Section 11.2.,
RLDS Enable Screen ). If they are disabled on the
RLDS Gateway, then the corresponding addresses are free to be used by other Gateways mapping in other
RLDS, IRLDS II, or MRLDS units.
For example, if you had an IRLDS II Gateway with two IRLDS II units, and an RLDS Gateway with one
RLDS, then you could set the IRLDS II for address 1 and disable the third IRLDS II unit on the
Gateway. Then set the RLDS Gateway for address 3 and disable the second and third RLDS units on this
Gateway. In E2 you would select three IRLDS
E2, Einstein, and REFLECS Controllers (The RLDS Gateway Board) Connecting Communication Devices • 19
controllers. IRLDS units 1 and 2 would map to the
IRLDS II Gateway and the third IRLDS would map to the RLDS on the RLDS Gateway.
Figure 4-14 - Gateway Dip Switch Numbering
4.2.4.3. Setting the Baud Rate Dip Switches
Dip switches 6 and 7 control the baud rate at which the Gateway communicates with the site controller on the RS485 Network. These switches must be set to the same baud rate setting as the E2, Einstein, or
REFLECS (usually 9600 baud). All Gateways and
RLDS units on the network must have the same baud rate dip switch setting.
Dip switch 8 must be set to the ON position for
REFLECS controller mode and OFF for E2, Einstein controller mode.
Baud rate for the RLDS is set by software, either through the RLDS, or on the Gateway Board via
Hand-Held Terminal. It is recommended you use
19200 baud as the MODBUS Network baud rate, as it is the default baud rate used by the RLDS. Set dip switch 5 to OFF.
Figure 4-15 - Dip Switch Setting for Numbering Gateway
4.2.4.4. Setting the RS485 I/O Termination
Jumpers
As part of an area controller’s RS485 I/O (COM A or
COM D) Network, a Gateway must be terminated if it is the end device of a daisy chain. Refer to the controller’s user manual for information about daisy chain networks and how they are terminated.
To terminate the Gateway, set the I/O Network
Jumpers to the right position as shown in Figure 4-16
.
To un-terminate the Gateway, set the jumpers to the left position.
Figure 4-16 - Gateway RS485 I/O Network Termination
20 • RLDS I&O Manual 026-1309 Rev 8
4.2.5. Gateway Board Status LEDs
Figure 4-17 - Gateway LED Locations
The Gateway has four LEDs: a General Status LED, an Alarm LED, an RS485 I/O Net Status LED, and a
Receiver Bus Status LED ( Figure 4-17 ).
4.2.5.1. The General Status LED
The General Status LED light flashes green once every second to indicate it is powered up.
4.2.5.2. The Alarm LED
The Alarm LED (red) indicates when an alarm condition exists for the Gateway. There are five possible LED states, each of which indicates a different condition.
• OFF No alarm conditions are active, and the
Gateway is functioning normally.
• Flashes 4 times/second There is a problem with the physical hardware (ROM) of the
Gateway board. The board may need to be replaced.
• Flashes 2 times/second There is no user configuration on this Gateway, no RLDS units are commissioned in its memory, and it is essentially in an empty state. This LED state will occur when the board is first powered up on-site.
• Flashes 1 time/second The Gateway is not communicating with the area controller due to a possible RS485 I/O Network or controller failure.
• ON with no flashing (steady) One or more of the RLDS units is offline. If all are offline, check the wiring. If just one is offline, check the
RLDS controller.
4.2.5.3. RS485 I/O Network Status LED
The RS485 I/O Network Status LED flashes orange to indicate traffic on the I/O Network
(between the Gateway and the site controller). If this light does not come on at all and the Alarm LED is flashing once per second, there is a problem with the
RS485 I/O Network or the area controller.
4.2.5.4. Receiver Bus Network Status LED
The Receiver Bus Network Status LED blinks orange each time the RLDS Gateway sends a message on MODBUS. However, when the Gateway receives a message from the RLDS units, the LED will flash brightly for 1/2 second.
If the Gateway has RLDS configurations in memory and is communicating properly, you should see this LED flash brightly several times within the course of a few minutes.
E2, Einstein, and REFLECS Controllers (The RLDS Gateway Board) Connecting Communication Devices • 21
5 RLDS -
Connecting
External Alarms
NOTE: Each relay may be connected as normally open (NO), or normally closed (NC).
5.1. Overview
Each RLDS includes four (4) Form C, SPDT relays. The contacts are rated .5A at 250 VAC and
1.0A at 30 VAC. These relays are used for the connection of external alarm devices. The relays are factory-assigned to the following conditions:
Relay #1
Relay #2
Relay #3
Relay #4
Leak
Spill
Evacuate
Fault
The relay contacts are rated .5 A at 250 VAC.
Latching / Non-Latching - refer to Section 7.7.,
Alarm Acknowledge (Ack) - Mode to select Alarm
Ack Mode.
Alarm power source - power for the alarm devices connected to the relay contacts may be supplied from
the Auxiliary AC Power Out Connector ( Figure 3-8
).
Red*
Yellow*
Leak \ Spill \ Evacuate \ Fault
RELAY
*The colors correspond to the LEDs on the front of the case
5.2. Connection
Use the AC conduit or any of the remaining service knockouts to gain cable access to the interior of the monitor. Locate the relay connector
) and remove it from the circuit board.
1. Secure the leads to the connector orienting
them as shown in Figure 5-1 . Wire the leads to
either the N.C. or N.O. terminals of each relay, depending on whether you want the relay to be
CLOSED or OPEN when de-energized.
2. When you are through securing the connections, carefully plug the connector back onto the circuit board.
Strobe or
Horn
Normal Configuration:
Strobes are usually connected to the Leak relay (#1)
Horns are usually connected to the Spill relay (#2)
External Power:
AC < 250V
DC < 15W
Note: the device does not power accessories; power must come from an external source
LINE POWER
Figure 5-2 - RLDS Relay 1 and 2 Wiring
3. Jumper the Neutral of the input power connector to the Common on the relay block.
4. Connect one end of strobe or horn to the NO of whichever level of alarm is appropriate for application.
5. The other end of strobe or horn is connected to the Line of the input power connector (5 A maximum).
Figure 5-1 - RLDS Relay Connector
22 • RLDS I&O Manual 026-1309 Rev 8
6 RLDS Hardware Specifications
Product Type
Coverage
Detector Type
Gas Library:
Sensitivity
Measuring Range
Accuracy
*
Front Panel
Size/Weight
Temperature Drift
Sampling Mode
Re-Zero
Response Time
System Noise
Table 6-1 - RLDS Specifications
Hardware Specifications
Multiple refrigerant gases and multiple area monitoring system for low level continuous monitoring of CFC, HCFC, and HFC refrigerant gases used in most commercial refrigeration systems. System design supports compliance to the refrigerant monitoring requirements of ANS/BSR ASHRE 15-2007 and
ASHRAE Safety Code 34-2007.
4-point standard, expandable to 16 points in 4-point increments
Infrared Non-Dispersive
CFC: R-11, R-12, R-113, R-114, R-502, HFP
HFC: R125, R-134a, R236FA, R245Fa, R32, R-404a (HP62), R-407a,
R-407c (AC9000), R-407F, R-410a (AZ20), R422a, R422d, R427a,
R-507 (AZ50), R-508b (SUVA95)
HCFC: R-123, R-124, R21, R-22, R227, R-23, R-401a (MP39), R-402a
(HP80), R-402b (HP81), R-408a, R-409a, R-500, R-503
Halon: H1211, H1301, H2402
Other: FA188, FC72, H1234YF, H1234ZE, N1230, N7100, N7200,
N7300, N7600, R424A, R426A, R438A, CUSTOM
All gases 1 PPM
All gases 0 to 10,000 PPM
Most gases ±1PPM ±10% of reading from 0-1000 PPM (R11, R22, and R113
±10 PPM ±15% of reading 0-1000 PPM)
*
At reference environmental conditions (77°F/25°C, 45% RH non-condensing, 1 ATM)
3 Indicator lights:
• Green = Monitor is powered on. LED glows during normal operation; flashes when unit is in warm-up mode
• Red = Alarm. LED flashes when any point has exceeded the alarm setting
• Yellow = Fault. LED flashes when there is a system fault
12.23”H x 13.7”W x 4.96”D (31.06 cm x 34.80 cm x 12.60 cm) /
15 lbs.
±0.3% of reading per degrees C
Automatic or manual (hold)
Auto or on zone change
5 to 315 seconds – depending on air line length and number of zones
Less than 40dB(A) @ 10 feet (3 meters)
Connection RLDS Hardware Specifications • 23
Monitoring Distance
Conditioned Signal
Alarms
Communications
Power Safety Mode
Operating Temp
Ambient Humidity
AC Power
Certification
Warranty
Altitude Limit
Table 6-1 - RLDS Specifications
Hardware Specifications
1200 ft. (365 meters) maximum for combined length of sample + exhaust tubing (each zone)
Dual optional 4-20mAdc isolated outputs. Channel 1 = zone area,
Channel 2 = PPM
Four SPDT alarm contacts rated 2A at 250 VAC (inductive) 5 A at 250 VAC
(resistive). Three are assigned to PPM level alarms, one assigned to system faults.
Full two-way communication with Building Management System via RS-485 serial interface. RS-232C communication port standard.
Fully automatic system reset. All programmed parameters retained.
32°F to 122°F (0°C to 50°C)
5% to 90% RH (non-condensing)
100 to 240 VAC, 50/60 Hz, 20 W
UL 61010-1, CAN/CSA 22.2 No. 61010 & CE Mark
2 years from date of shipment
6,562 ft (2,000 m)
Product Type
Gas Library:
Sensitivity
Measuring Range
Accuracy
*
Table 6-2 - RLDS-CO
2
Specifications
RLDS-CO
2
Hardware Specifications
The RLDS-CO
2
provides multiple area monitoring for low level continuous monitoring of carbon dioxide gases used in most commercial systems. System design supports compliance to the gas monitoring requirements of ANS/BSR
ASHRE 15-1994.
Carbon Dioxide (CO
2
)/R-744
10 PPM
300-8,000 PPM
Most gases ±5 PPM ±5% of reading from 300-1000 PPM, ±10% of reading from 1001-3000 PPM
*
At reference environmental conditions (77°F/25°C, 45% RH
non-condensing, 1 ATM)
24 • RLDS I&O Manual 026-1309 Rev 8
7 Programming
Setup and UI
Navigation for
RLDS - Display
Screens
After a 15-minute warm-up cycle, the MONITOR
ON light will glow steadily and the Status screen will be displayed:
7.1. Navigation Keys
• Use the arrow/cursor keys for multi-directional movement in making selections and moving the cursor.
• Use the ENTER key to initiate and complete a selection.
• Use the ESC key to go back during programming or silence an alarm in alarm mode.
Figure 7-2 - Status Screen
NOTE: “RLDS Setup Screens - System Map” on page 43
Figure 7-1 - RLDS Front Panel Navigation Keys
7.2. Initial Power Up
When the RLDS is first powered up, all front level panel LEDs will illuminate, and a splash screen will appear and display the monitor’s firmware version level. After a moment the Warm Up screen will be displayed and the green MONITOR ON light (green) will blink.
7.3. Navigate to the First
Setup Screen
1. Use the up/down cursor keys to select the first text box to access the Setup screen .
2. Press ENTER to select.
Figure 7-3 - Setup Screen 1
Navigation Keys Programming Setup and UI Navigation for RLDS - Display Screens • 27
7.4. Navigate to the Second
Setup Screen
1. From RLDS System Setup screen 1 select the
SYSTEM option to go to System Setup screen
2 .
2. Press the ESC key to return to the System Setup screen 1 .
IMPORTANT: DO NOT change the number of zones to deactivate unused zones. Changing the number of installed zones is only necessary when manifold blocks are added or removed. Go to the individual zone that you wish to disable and set its distance to zero.
1. Press the ENTER key to adjust the number.
2. Use the up/down cursor keys to modify the number. Press ENTER to accept the new number or ESC to revert to the previous setting.
NOTE: The RLDS auto setting detects the number of zones present on power-up. Do not plug any zones. The number detected on power-up is the default value for this parameter.
Figure 7-4 - Setup Screen 2
7.5. Location
This is the name you assign to the RLDS to identify its location. It may have up to 12 alphanumeric characters.
1. Press the ENTER key to adjust the setting.
2. Use the left/right cursor keys to move across the entry field and the up/down cursor keys to modify the individual characters.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
7.6. Number of Zones
Installed
Number of Zones Installed is the number of zones from 1 to 16 connected to the instrument.
7.7. Alarm Acknowledge
(Ack) - Mode
This function programs the relays in the RLDS unit for latching or non-latching operation.
1. Press the ENTER key to adjust the setting.
2. Use the up/down cursor keys to toggle between settings.
AUTO - Non-latching (Alarm relay will automatically de-energize when the gas level drops below its alarm point).
MANUAL - Latching (Alarm relay remains energized, and will not release until the alarm condition has been manually acknowledged). Refer to
Section 8.6.4., Acknowledging Alarms .
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
7.8. Audible Alarm
This parameter selects the function of the RLDS unit’s internal audible alarm device.
1. Press the ENTER key to adjust the setting.
2. Use the up/down cursor keys to select unused , monitor on , evacuate , spill , leak , fault , or alarm .
28 • RLDS I&O Manual
3. Press ENTER to accept the new entry or select
ESC to revert to the previous setting.
7.9. Zone Hold Mode
A zone can be placed on hold and continuously monitored for a length of time determined by the Zone
Hold Time value. To place a zone on hold:
1. Select the zone at the top level screen.
2. Press and hold down the ENTER key until the unit beeps. The word HOLDING will appear in the status box.
3. While in the hold mode, further investigation of the zone's status can be made by navigating to that zone’s Setup Screen 1 .
4. To release the zone from the Hold Mode, press and hold down the ENTER key until the unit beeps and the screen display returns to normal.
7.12. Loop2 Factor
Loop2 Factor sets the PPM scale factor for current loop number 2. To calculate the current output, multiply the scale factor by the PPM and add four (4).
For example, at the default scale factor of 0.016, a measurement of 100 PPM would generate a current output of 5.6 mAdc. The current output cannot exceed the 20 mAdc capacity of the interface.
1. Press the ENTER key to adjust the setting.
2. Use the left/right cursor keys to move across the entry field and the up/down cursor keys to modify the individual characters.
3. Press ENTER to accept the new entry or select
ESC to revert to the previous setting.
7.10. Zone Hold Time
Sets the length of time a zone will be monitored when the Zone Hold feature is activated. The default is 15 minutes. The range is 1 to 999 minutes.
1. Press the ENTER key to adjust this setting.
2. Use the left/right cursor keys to move across the entry field and the up/down cursor keys to modify the individual numbers.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
7.13. Re-Zero Mode
This parameter defines the frequency at which the instrument re-zeros the optical sensor.
1. Press the ENTER key to adjust the setting.
2. Use the up/down cursor keys to toggle between settings.
AUTO - sets the instrument to re-zero every 10 minutes.
ZONE CHANGE - sets the instrument to re-zero at each zone change. This is the most accurate setting, but increases the time interval between measurement cycles.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
7.11. Detection Limit
Detection Limit is a squelch setting that instructs the instrument to interpret PPM readings below the designated level as 0. The range is 1 to 99 PPM.
1. Press the ENTER key to adjust the setting.
2. Use the up/down cursor keys to modify the setting.
3. Press ENTER to accept the new entry or select
ESC to revert to the previous setting.
Zone Hold Mode Programming Setup and UI Navigation for RLDS - Display Screens • 29
7.14. Navigating to the Third
Setup Screen
From the second System Setup screen , select the
MORE option to go to the System Setup screen 3 .
Select the BACK option to return to the System Setup screen 2 .
7.16. Node Address
Each RLDS on the network must have a distinct node address. The node address may be set from 1 to 64.
1. Press the ENTER key to adjust the setting.
2. Use the left/right cursor keys to move across the entry field and the up/down cursor keys to modify the individual numbers.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
Figure 7-5 - Setup Screen 3
7.17. Password
This field is used to define a system password. The default setting is 000 , which provides no password protection.
1. Press the ENTER key to adjust the password.
2. Use the left/right cursor keys to move across the entry field and the up/down cursor keys to modify the individual alphanumeric characters.
3. Press ENTER to accept the new password or
ESC to revert to the previous setting.
7.15. Service Timeout
NOTE: The RS485 BAUD rate text will be replaced by “Service Timeout” when in Service
Mode.
Displayed in Service Mode, Service Timeout sets the length of time the Service Mode is in effect and stops the monitor for up to 300 minutes (5 hrs) to allow for servicing the unit.
1. Press the ENTER key to adjust the setting.
2. Use the left/right cursor keys to move across the entry field and the up/down cursor keys to modify the individual numbers.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
7.18. Accessing Additional
Features
Several additional features can be viewed on the System Setup screen 3 when the RLDS is placed in Service Mode (refer to
Section 8.11., Service Mode ).
While in service mode, the user can identify the model number, set digipot values and sensor temperature, and acquire the temperature coefficient.
30 • RLDS I&O Manual
7.19.
DET Digipot
Figure 7-6 - System Setup Screen 3 - Service Mode
The DIGIPOT function allows a manual and more precise adjustment of the digital potentiometer, which controls the voltage of the IR Detector. The DIGIPOT is auto-tuned at every power up.
1. Press the ENTER key to adjust the setting.
Once the option is selected the screen will also display the voltage.
2. Use the up/down cursor key to modify the
Digipot value.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
7.20.Sensor Temperature
Coefficient
1. Press the ENTER key to adjust the setting.
2. Use the up/down cursor key to modify the temperature value.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
7.21. Acquiring
Temperature
Coefficient (Factory
Use Only)
Press the left/right arrow buttons simultaneously to return to the previous screen.
7.22. R Digipot
This option will indicate the electrical parameters of the infrared emitter.
DET Digipot Programming Setup and UI Navigation for RLDS - Display Screens • 31
8 General
Operation of
RLDS - UI
8.1. Functional Overview
Normally each RLDS will perform measurements on its active zones sequentially and without user input. The total time it takes an RLDS to complete a measurement cycle is directly proportional to the number of active zones and the physical length of the air lines. Monitors linked together on a network operate independently of each other and consequently complete their respective measurement cycles at different rates.
8.2. The Zone Screen
From the System Setup screen 1 (
, scroll down and select the ZONES option (or select the desired zone from the Status screen (
.
Figure 8-1 - Zone Setup Screen 1
8.2.1. Location
This is the name you assign to the RLDS to identify its location. It may have up to 12 alphanumeric characters.
1. Press the ENTER key to adjust the setting.
2. Use the left/right cursor keys to move across the entry field and the up/down cursor keys to modify the individual characters.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
8.2.2. Refrigerant Type
This displays the kind of refrigerant the RLDS is detecting.
1. Press the ENTER key to adjust the setting.
2. Use the left/right cursor keys to select the type of refrigerant you want the device to detect.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
8.2.3. Distance
This displays the combined length of the sample tubing plus any tubing on the exhaust port. Total length should not exceed 1200 feet (365 meters).
1. Press the ENTER key to adjust the setting.
2. Use the left/right cursor keys to move across the entry field and the up/down cursor keys to modify the individual characters.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
8.2.4. Zone Temperature
This displays the air temperature at the zone being sampled.
1. Press the ENTER key to adjust the setting.
2. Use the left/right cursor keys to move across the entry field and the up/down cursor keys to modify the individual characters.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
8.2.5. Current Detection Reading
This reading displays the current PPM STP level of the selected refrigerant being detected by the device.
32 • RLDS I&O Manual
8.2.6. Log Interval
The RLDS retains a data log of 100 measurements for each zone. The log interval is the number of minutes from 1 to 1440 between each log point. This parameter can be changed from Zone Setup screen 1
).
The default setting for this parameter is 1440 minutes (24 hours). If the log interval time is set to 0 , then a measurement is recorded in the trend log after every measurement cycle . Therefore, after the trend log is filled, it will contain the last 100 measurement points for a zone. If you want the data logged less frequently, increase this value.
It is important to remember that cycle time is dependent on many factors, including the number of zones being monitored, input line length, and the run zeroing mode selected. Before changing this value it may be useful to review the log data first using the
Trend screen to determine the nominal cycle time.
8.3. Navigating to the
Second Home Screen
Select the MORE option at the bottom right hand side of the screen (
Figure 8-1 ) to continue to the next
screen containing more options. This screen displays the peak PPM value in the upper side of the screen.
8.3.1. Leak Level
This is the concentration level in PPM that will activate a leak alarm condition.
1. Press the ENTER key to adjust the value.
2. Use the up/down cursor keys to modify the setting.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
NOTE: This value must be less than the spill level.
8.3.2. Spill Level
This is the concentration level in PPM that will activate a spill alarm condition.
1. Press the ENTER key to adjust the value.
2. Use the up/down cursor keys to modify the setting.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
NOTE: This value must be less than the evacuate level and greater than the leak level.
8.3.3. Evacuation Level
This is the concentration level in PPM that will activate an evacuate alarm condition.
1. Press the ENTER key to adjust the value.
2. Use the up/down cursor keys to modify the setting.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
NOTE: This value must be greater than the spill level.
Figure 8-2 - Zone Setup Screen 2
8.3.4. Resetting the Peak PPM Value
Pressing this key resets the current peak PPM level stored in memory and displays it at the top of the screen.
Navigating to the Second Home Screen General Operation of RLDS - UI • 33
8.4. Alarm Conditions
When an alarm condition is detected anywhere on the network, the red ALARM LED will glow on the front of the unit. Additionally, an external alarm device may activate and an audible alarm may sound if those features have been enabled ( Section 4.2., E2,
Einstein, and REFLECS Controllers (The RLDS
Gateway Board) .
An inverse flashing box indicates an alarm condition in the affected zone.
You can investigate the status of the affected zone further by selecting the ALARM option on the Status screen (
).
Alarm Summary Screen
8.5. Fault Conditions
If a system malfunction occurs, the yellow FAULT
LED will glow. Additionally, an external alarm ( Section 4.2., E2, Einstein, and REFLECS Controllers
(The RLDS Gateway Board) device may activate and an audible alarm may sound if those features have been enabled (
).
Figure 8-3 - Alarm Summary Screen
The Alarm Summary screen displays a list of all alarm conditions pending across the network. The screen is divided into eight (8) boxes, and each box represents a single alarm. If more than eight (8) alarms are pending, additional pages can be displayed by selecting the
MORE option (visible when there are more than eight (8) alarms pending).
Each box displays the zone number, zone name, and the current PPM reading. A flashing box indicates an alarm that has not been acknowledged. A static box represents an alarm that has been acknowledged but has not yet been cleared from the system.
The Alarm Data Log can be reset by pressing a combination of the ENTER and right arrow buttons while viewing the log.
8.6. Alarms
8.6.1. Functional Overview
If the PPM level for any zone exceeds its designated spill, leak, or evacuate thresholds, an alarm condition will be created. Once the RLDS completes a measurement cycle in the affected zone the alarm condition will be indicated. At that time the red ALARM LED on the RLDS will glow.
Additionally, an external alarm device may activate and an audible alarm may sound if those features have
been enabled ( Section 7.8., Audible Alarm ).
The alarm condition may or may not have to be acknowledged for the system to return to normal operation.
8.6.2. Responding to Alarms
An operator can respond to alarms by accessing the
Alarm Summary screen . Navigate to this screen by selecting ALARM on the Status screen 1
).
34 • RLDS I&O Manual
8.6.3. Alarm Detail Screen
The Alarm Detail screen displays more comprehensive information about the nature of the alarm including: be blinking, indicating that the alarm has been acknowledged. Repeat this procedure to acknowledge any remaining alarms.
Alarm Summary Screen (Acknowledge Mode)
Figure 8-4 - Alarm Detail Screen
• Complete location information
• Gas type and current concentration (CONC
NOW)
• Peak concentration and peak time
• Type of alarm, alarm time, and date
This screen provides the following navigation options at the bottom of the display:
• ACK - using the left arrow key, ACK will acknowledge the alarm as described in the next section.
• SETUP - using the right arrow key, navigate to the Zone Setup screen 1 (
). This enables review of the zone setup parameters and accesses the Trend screen .
Use the ESC button on the RLDS unit to go back to the previous menu.
8.6.4. Acknowledging Alarms
Each pending alarm may require, depending upon selected alarm mode, acknowledgment before the system returns to normal operation
. To acknowledge an alarm, navigate to the Alarm Detail screen and select the ACK option as previously described. You will then be returned to the Alarm Summary screen and the box associated with that alarm will no longer
Figure 8-5 - Alarm Summary Screen - Acknowledge Mode
Once all the alarms associated with a given RLDS are acknowledged, its red LED will turn off, and any external alarms connected to the RLDS relays will deactivate. Keep in mind that the system will continue to generate new alarms if PPM values above the alarm thresholds are detected.
8.7. System Faults
8.7.1. Functional Overview
If a system malfunction occurs, the yellow FAULT
LED to glow. Additionally, an external alarm device may activate and an audible alarm may sound if those features have been enabled (
).
Depending on the nature of the fault, the RLDS may or may not continue to operate normally. Under a non-critical fault condition, the RLDS will continue to measure and log data, but some peripheral functions may be compromised. Under a critical fault condition, action is required for the RLDS to operate normally.
Various fault conditions are listed and explain what
action should be taken to correct the problem in Section 8.7.2.1., Critical Faults .
System Faults General Operation of RLDS - UI • 35
8.7.2. Navigating to the Fault Screen
Displayed on the initial Status screen
a Fault option. Scroll down with the cursor key and select this option, and the Fault screen will display:
Figure 8-6 - Fault Screen
8.7.2.1. Critical Faults
• NO FLOW ON ZONE - Go to the Status screen
FAULT . This will display a NO FLOW message in each individual zone affected. Check for a blockage in the air sample line or at the line-end filter.
Once the blockage has been cleared, the RLDS will return to normal operation after the zone has been sampled. there are and their lengths. The RLDS will clear the fault the next time it polls the affected zone.
NOTE: This can take several minutes since it is dependent upon how many zones
• NO FLOW ON PURGE - Check the purge line for a blockage. Verify that the length of the purge line and exhaust line do not exceed 500 feet (152 meters) in length.
• NO FLOW DETECTED - Check for proper pump operation. Examine the hydrophobic filter for contaminants or water on the input side. If the input side is gray, a contaminant is present and the filter must be replaced. To drain, remove the tubing from both sides of the filter and tap the tubing on a hard surface to dislodge the contents.
• CLIPPING FAULT - The detector voltage may be out of tolerance. Refer to the Diagnostic screen (
) for the DET voltage, AVE voltage and ZERO voltage. Contact Technical
Support with this information for further instructions.
• REZERO VOLT TOL - The detector output voltage is out of tolerance. Refer to the
Diagnostic screen (
Technical Support for assistance.
• TRIGGER FAULT - No trigger from IR source pulser. Contact Technical Support with all information from the Diagnostic screen
(
Figure 8-12 ) for further instructions.
8.7.2.2. Non-Critical Faults
• BOX TEMP FAULT - Enclosure's internal temperature is outside normal range (or IR sensor has failed). Check the installation to verify that the monitor is not being subjected to extreme temperatures. Verify that the ventilation holes are not obstructed. Check the
Diagnostic screen
) for the ZERO temperature, BNCH temperature and BOX temperature. Contact Technical Support with this information for further instructions.
• BENCH TEMP FAULT - Optical bench is outside of normal operating range (or sensor has failed). Check the installation to verify that the monitor is not being subjected to extreme temperatures. Check the Diagnostic screen
(
ZERO temperature,
BNCH temperature and BOX temperature.
Contact Technical Support with this information for further instructions.
• PRESSURE SENSOR - Manifold pressure is outside normal operating range (or sensor has failed). Check the Diagnostic screen record
ALL data (
Figure 8-12 ). Contact Technical
Support with this information for further instructions.
• LOOP FAULT - This would only be displayed if the dual 4-20 mAdc option was installed and one or both current loops are open. Check the wiring to load/monitoring circuit on both 4-20 mA loops.
• CONFIG FAULT - There is an error in the
RLDS Setup screen 2 - NUMBER ZONES
INSTALLED field (
). Check that the number of zones installed for each RLDS unit and the number of RLDS units on the
36 • RLDS I&O Manual
network are properly programmed. Check to ensure that the manifold solenoid cable connector in each RLDS unit is securely fastened to its terminal connector. Check for an illegal parameter. If necessary, reset to the factory default settings.
8.7.3. Reset to Factory Default
Settings
IMPORTANT : Performing this function
ERASES all program parameters, alarms, faults, trends, and log files.
Resetting the RLDS
Press and hold down the Factory Default switch inside the RLDS ( Figure 3-8 ):
1. Cycle AC power OFF then ON
2. Listen for five beeps
3. Release the switch
Reprogram the RLDS as described in Section 7,
Programming Setup and UI Navigation for RLDS -
.
8.7.4. Clearing System Faults
If the fault condition is associated with an RLDS, the monitor will return to normal operation soon after the problem is corrected. At that time the yellow LED will turn off and any external alarms connected to the monitor's alarm relays will also turn off.
Once the system malfunction has been corrected, it may take some time for the fault condition to clear completely. If the fault is associated with a specific zone, the RLDS must first cycle back to the affected zone before it returns to normal operation. At that time the yellow LED will turn off and any external alarms connected to the monitor's alarm relays will also turn off.
8.7.5. Viewing Fault Log
A data log of the last 20 fault conditions is retained in memory. On the Fault screen
LOG option to view a display of the Fault Log:
Figure 8-7 - Fault Log Screen
This screen lists potential fault conditions in the left column and displays a check mark indicating which problems were associated with each fault condition as represented by the vertical cursor bar. As you move the bar horizontally using the left/right cursor keys, the date and time the fault condition was detected are displayed in the upper right hand corner of the display window.
Anytime the fault status changes, there is an entry in the fault log, both when the fault occurs and when it is cleared.
The Fault Log can be reset by pressing a combination of the ENTER and right arrow buttons while viewing the log.
System Faults General Operation of RLDS - UI • 37
8.7.6. Viewing Flow Log
On the Fault Log screen, press ENTER (as shown in
) to access the Flow Log screen . The Flow
Log displays the last 20 flow events for all zones and the purge port.
Figure 8-8 - Flow Log Screen
This screen lists the zones in the left column and displays flow data. Use the up/down buttons to scroll through the zones and the left/right to scroll through the log data. As you move the bar horizontally, the date and time of the condition are displayed in the upper right hand corner.
The Flow Log can be reset by pressing a combination of the ENTER and right arrow buttons while viewing the log.
8.8. The Trend Screen
8.8.1. Navigating to the Trend
Screen
From the Zone screen (
Trend option on the bottom left side. This will open the
Trend screen :
Figure 8-9 - Trend Screen
The trend graph opens with the cursor located over the most recent data point. Use the left/right cursor keys to move the cursor to different data points.
Holding a key down will cause the cursor to move rapidly across the screen. As you move the cursor position, the date and time of that reading, along with the PPM value, are displayed at the top of the screen above the graph. The trend graph is automatically scaled to accommodate the largest PPM value displayed. The ZOOM OUT and ZOOM IN options allow you to adjust the vertical scale of the graph.
The trend data is stored on a first-in, first-out basis.
After 100 trend values have been stored, the 101st value will replace the first value stored; therefore, in normal operation, when entering trend mode the cursor will be located at the most recent data point.
The data points to the left of the initial cursor location will be the next most recent. The data point to the right will be the oldest data point in the buffer and will be overwritten by the next data point.
The Trend Data Log can be reset by pressing a combination of the ENTER and right arrow buttons while viewing the log.
When finished, press the ESC key to revert to the previous screen.
8.9. The Calibration Screen
8.9.1. Overview
The Calibration Screen is used to adjust the calibration factor for each refrigerant gas. It is also used to program the instrument for new gases.
38 • RLDS I&O Manual
IMPORTANT: Changing information on CAL
FACTOR will VOID the factory calibration.
Typically, the unit will remain within the factory-calibrated accuracy indefinitely and no calibration is required. Complex software algorithms adjust for temperature drift, IR source aging, and pressure changes in order to keep the unit within factory accuracy specifications.
8.9.2. Navigating to the Calibration
Screen
On the System Setup screen (
Calibration option abbreviated CAL .
Figure 8-10 - Calibration Screen
8.9.3. Adjusting Calibration Factor
The factory default CAL factor for standard units is
1.000
. This value may be different if the high accuracy option is ordered. Proceed as follows to adjust the current calibration factor:
1. Use the PREV GAS or NEXT GAS options to scroll through the list of refrigerants until the gas you wish to work with is displayed.
2. Select the CAL FACTOR option to edit the value.
3. Use the left/right cursor keys to move across the entry field and the up/down cursor keys to modify the individual numbers.
4. Press ENTER to accept the new entry or ESC to revert to the previous setting.
8.9.4. CO
2
Atmospheric
Concentration
(RLDS-CO
2
Units Only)
CO
2
is supported by RLDS-CO
2
units. Because CO
2 is present in ambient air, a relative reading is used to determine the amount of CO atmospheric CO
2
2
coming from a leak.
The CAL screen offers the ability to enter the
concentration manually. This value is typically in a range of 380-400 PPM depending on location. Enter the CO
2
concentration as follows:
1. After selecting CO
2
as the desired gas and setting the CAL FACTOR , you will be prompted to enter the CO
2
concentration value.
2. Use the up/down cursor keys to modify the numbers to set to the appropriate value.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
8.9.5. Calibration Procedure
The CAL FACTOR is determined by sampling a known dilution of the type of refrigerant gas to be sampled. The sample must be prepared to less than half the desired accuracy, and the concentration must be corrected for ambient temperature and pressure at the time of measurement.
Calibration is best performed at or near full scale
(1,000 PPM). It can, however, be done at any concentration, and ideally in the range where maximum accuracy is desired down to, but not below
100 PPM.
A cylinder of refrigerant gas at a certified PPM level must be used to ensure that sampling occurs at ambient conditions. A minimum sample size of 5 liters is required.
The RLDS should be operating for at least one hour prior to performing a calibration.
Prepare the RLDS for sampling by initially setting its
CAL FACTOR to 1.000
. Next, set up the RLDS for a logging interval of zero minutes (
Interval ), and place the RLDS in its zone hold mode
for the zone you wish to use for calibration purposes
( Section 7.10., Zone Hold Time ).
Connect the sample bag directly to the intake port for the zone you have set up and allow the RLDS to sample the entire bag. When sampling is complete, view the trend data for the zone used to sample
( Section 8.8., The Trend Screen ). Read the measured
The Calibration Screen General Operation of RLDS - UI • 39
PPM by placing the cursor on the spikes cause by the sample. If the bag was large enough for multiple samples, average the most stable ones.
The new CAL factor is computed by dividing the known gas value by the measured value. Typically this value will be between 0.95 and 1.05. This value is stored in non-volatile memory.
8.9.6. Programming New Gases
As new refrigerants come into use, the RLDS allows the addition of these new gases to its on-board refrigerant gas library. At the end of the gas library list is an option labeled CUSTOM for adding new gases.
From the Calibration screen use the left/right arrows to select CUSTOM from the list of refrigerants. Next, press ENTER , and use the up/down arrow keys to enter the calibration factor.
The selection of the matching gas and CAL factor is performed by analyzing the new refrigerant. Once the matching gas is determined, field calibration is possible by using the same procedure as for other refrigerants. When the new gas entry is complete, simply set up the appropriate zone for CUSTOM .
Program the instrument for a new gas as follows:
1. From the Calibration screen , use the PREV
GAS or NEXT GAS options to scroll through the list of available choices until the CUSTOM option is displayed.
Figure 8-11 - Custom Gas Screen
2. Select the CUSTOM option. Press ENTER to accept the new entry or ESC to revert to the previous setting.
3. Enter the new CAL Factor as received from
Emerson Electronics and Solutions.
40 • RLDS I&O Manual
8.10. The Diagnostic Screen
8.10.1. Navigating to the Diagnostic Screen
On the System Setup screen (
Diagnostic option ( DIAG ).
Diagnostic Screen
Current active zone & programmed name
Optical Sensor
Output Voltages
Programmed gas type for active zone
Optical Bench Temperature
Chassis Temperature
Manifold Pressure
Vacuum Pressure
Ambient Pressure
Hexidecimal Fault
Code
Receive port #bytes
Transmit port #bytes
Modbus function
Register address
Absorbance & concentration data
Temps at last purge
& difference from current temps
Manifold - ambient
Vacuum - ambient
Manifold - vacuum
Programmed length of tubing for active zone
Figure 8-12 - Diagnostic Screen Layout
Diagnostic Options and Controls
Indicates parameter is out of tolerance & causing a fault condition
Quit; go back to menu
SILENCE
ESC
Forces a purge cycle
Clears Modbus Data
Navigates to the next zone
Pump ON/OFF Control
Figure 8-13 - Diagnostic Options and Controls
8.10.2. Diagnostic Screen Overview
The Diagnostic Screen contains sensor data and status information useful for trouble shooting various fault conditions. An explanation of each line is given below along with normal operating ranges.
DET : Detector Voltage - Peak-to-peak output of the
IR sensor, in the absence of gas this value can range from 3.900V to 4.500V.
AVE : Average Detector Voltage - Running average of the values displayed in line 1 ( DET ).
ZERO : Zero Voltage - IR sensor output that was stored during the last purge cycle and has the same range as line 1 ( DET ).
NOISE : A 16-point running average of the noise portion of IR bench output. This reading is valuable mainly when refrigerant is not present.
The Diagnostic Screen General Operation of RLDS - UI • 41
AVEAU : Average Absorbency - Optical absorbency computed from the Average Detector
Voltage and Zero Voltage. In the absence of refrigerant the absorbency is 0.000AU. When sampling refrigerants, its value varies proportionally with the refrigerant concentration.
UM/L : uMoles/L - Absolute concentration in micro-moles per liter of refrigerant based on NOISE and the internal calibration. There are two figures displayed: the first (annotated by a B ) is the actual measurement at the IR bench. The second is the calculated value corrected to ambient conditions
(temperature + pressure).
PPM : Parts Per Million is the volume concentration referenced to standard temperature and pressure and is computed from the Average
Absorbency, Zero Temperature, and Ambient
Pressure. There are two figures displayed. The first
(annotated by a B ) is the actual PPM at the IR bench.
The second is a PPM reading normalized to standard temperature and pressure.
ZERO : Zero Temperature - Displays the sensor and enclosure temperature measured and stored during the last purge cycle in degrees C.
BENCH : Bench Temperature - Current IR sensor temperature in degrees C as well as the raw voltage coming from the temperature sensor. This value can range from ambient to ambient +15 degrees C.
BOX : Box Temperature - Current internal enclosure temperature along with the raw voltage from the temperature sensor, and has the same range as Bench Temperature.
PRESS : Pressure - Current absolute manifold pressure in PSIA along with the output voltage of the pressure sensor. This value should always be 0.2 to
1.0 PSIA below Ambient Pressure ( AMB ).
VAC : Vacuum - The vacuum pressure is measured every purge cycle by closing all sample valves. Its value is typically 2.5 to 4.0 PSIA below
Ambient Pressure ( AMB ).
AMB : Ambient - Ambient pressure is measured every purge cycle with the sample pump off and the manifold open. Its value is weather and altitude dependent and can range from 10.0 to 15.5 PSIA.
FAULT CODE : For fault code information, see the fault code list
) .
XXXX FEET : Programmed length of tubing for an active zone.
8.11. Service Mode
The Service Mode option is located on the System
Setup screen in the bottom right corner.
When activated, Service Mode will disable the RLDS unit for a specified length of time. The default is 60 minutes. This time interval can be changed as
described in Section 7.15., Service Timeout
.
IMPORTANT: Note that while in the Service Mode no measurements are made, nor are any alarms activated.
Access the Service Mode options from the initial
Status screen . Press the SERVICE MODE ENTRY option twice within 3 seconds.
To exit the Service Mode, again press the
SERVICE MODE ENTRY option twice within 3 seconds .
42 • RLDS I&O Manual
RLDS Setup Screens - System Map
Service Mode General Operation of RLDS - UI • 43
RLDS Alarm and Fault Screens - System Map
RLDS System Map
Alarm & Fault Screens
Navigating to a zone :
Select the zone in the list on the
Status screen and press Enter or
Select ZONES on the first Setup screen
(Setup Screen 1)
Navigation Keys
ESC
ENTER
* Use the arrow keys for
multi-directional movement
in making selections and
moving the cursor
* Use the Enter key to initiate
and complete a selection
* Use the ESC key to go
back during programming
or to silence an alarm in
Defrost mode
44 • RLDS I&O Manual
Recommended Refrigerant Gas Alarm Settings
Gas
R227
R236FA
R245FA
R401A
R402A
R402B
R404A
R407A
R23
R32
R113
R114
R123
R124
R125
R134A
R408A
R407C
R409A
R410A
R422A
CO
2
/R-744
FA188
FC72
H1301
H1211
H2402
H1234YF
HFP
N1230
NH
3
/R-717
R11
R12
R21
R22
Table 8-1 - Recommended Alarm Settings and Gas Enumeration
Leak
1500
100
100
100
100
50
100
100
100
100
100
100
100
100
25
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
Alarm Settings (PPM)
Spill
2000
300
300
300
300
150
300
300
300
300
300
300
300
300
35
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
Evacuate
3000
500
500
500
500
300
500
500
500
500
500
500
500
500
50
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
Service Mode General Operation of RLDS - UI • 45
R422D
R424A
R426A
R427A
R438A
R500
R502
R503
R507
R508B
R-717/NH
3
R-744/CO
2
H1234ZE
R407F
N7100
N7200
N7300
N7600
Table 8-1 - Recommended Alarm Settings and Gas Enumeration
1500
100
100
75
25
10
3
100
100
100
100
100
100
100
100
100
100
50
MODBUS Gas Enumeration
Refrigerant Gas
CO
2
/R-744
NH
3
/R-717
R11
R12
R22
R23
R113
R114
R123
R124
R134A
R401A
R402A
R402B
R404A
Table 8-2 - MODBUS Gas Enumeration
DEC
0
0
6
7
4
5
2
3
0
1
10
11
8
9
12
HEX
00
00
04
05
06
07
00
01
02
03
08
09
0A
0B
0C
2000
300
300
200
50
20
5
300
300
300
300
300
300
300
300
300
300
150
3000
500
500
300
100
50
8
500
500
500
500
500
500
500
500
500
500
300
46 • RLDS I&O Manual
Service Mode
FC72
R21
R125
H1211
H2402
R245FA
R422A
R422D
R427A
H1234YF
R424A
R426A
R438A
R32
H1234ZE
R407F
N7100
N7200
N7300
N7600
Custom
R508B
H1301
R408A
FA188
R236FA
N1230
R227
HFP
R407A
R407C
R409A
R410A
R500
R502
R503
R507
Table 8-2 - MODBUS Gas Enumeration
41
42
43
44
37
38
39
40
45
46
47
48
49
33
34
35
36
29
30
31
32
25
26
27
28
21
22
23
24
17
18
19
20
13
14
15
16
29
2A
2B
2C
25
26
27
28
2D
2E
2F
30
31
21
22
23
24
1D
1E
1F
20
19
1A
1B
1C
15
16
17
18
11
12
13
14
0D
0E
0F
10
General Operation of RLDS - UI • 47
2
1
4
3
0
6
5
8
7
12
11
10
9
BIT
15
14
13
Table 8-3 - Fault Codes
Fault Type
CLIPPING FAULT
ZERO RANGE FAULT
OVER RANGE FAULT
PURGE FLOW FAULT
ZONE FLOW FAULT
A2D FAULT
GAIN SET FAULT
ZERO FILTER FAULT
CONFIG FAULT
UNUSED FAULT 2
UNUSED FAULT 1
LOOP FAULT
RS485 FAULT
MANIFOLD P FAULT
BENCH T FAULT
BOX T FAULT
Fault Codes
0x0100
0x0080
0x0040
0x0020
0x0010
0x0008
0x0004
0x0002
0x0001
Code
0x8000
0x4000
0x2000
0x1000
0x0800
0x0400
0x0200
Description
Sensor output voltage too high
Sensor output voltage outside limits during purge
Gas concentration above measurable range
No flow detected during purge cycle
No flow detected during sample cycle
Analog to digital converter not working
Digipot gain setting out of normal range
Charcoal filter (if used) needs replacement
No zones are enabled
Not used
Not used
Current loop is open
Communication error
Pressure sensor readings are out of range
Sensor temperature is out of range
Chassis temperature is out of range
48 • RLDS I&O Manual
9 Quick Setups for
Hand-Held
Terminal (HHT)
NOTE: For TIME, enter military time only.
Summaries of Zone Setup and Date/Time Setup have been included here for your convenience. For more detailed information about these setup procedures, please refer to their respective sections in this manual.
9.1. Time/Date Setup
Time and date is set from the CONFIG OPTION screen.
1. From the Home screen ( F1 ), press the down arrow key three (3) times to display the
OPTION screen:
NOTE: There is a short interval after the message WAITING ON READ FROM RLDS.
OPTION: 1
1 = RLDS STATUS
2 = RLDS FAULTS
3 = RLDS CONFIG
2. Press the right arrow key and select 3 .
3. Press the down arrow key twice to display the
CONFIG OPTION screen:
A change in the Time/Date on any one of the RLDS controllers changes ALL of the RLDS controllers on the network.
6. Press the right arrow key to edit the fields. The right and down arrow keys scroll downward through the list, while the left or up arrow keys will backspace the arrow so you may go back to change a field.
7. Press the up arrow key to scroll back up to the
CONFIG OPTION screen to calibrate gases.
Your changes are saved and the data is written when you scroll back up to the CONFIG
OPTION screen.
9.2. Zone Setup
9.2.1. General Configuration 1
Screen
1. From the CONFIG OPTION screen, press the right arrow key and then press the 1 key for
RLDS CTRL .
2. Press the down arrow key twice to display the
General Configuration 1 screen:
Ux: ENABLED:DISABLED
Ux- ZONES: 8
Ux- MODEL: 300
Ux- REV : 1.12
CONFIG OPTION: 1
1 = RLDS CTRL
2 = TIME/DATE
3 = CALIB GASES
4. Press the right arrow key and select 2 .
5. Press the down arrow key twice to open the
TIME/DATE screen:
NOTE: x is the RLDS currently being accessed.
3. Press the down arrow key to display the
General Configuration 2 screen:
1-DATE: xx-xx-xx
1-TIME: xx:xx:xx
Time/Date Setup Quick Setups for Hand-Held Terminal (HHT) • 47
9.2.2. General Configuration 2
Screen
1 - BUZZER: NONE
1 - AL ACK: MANUAL
NOTE: The “blank” line is used to provide a cursor so the user knows which character they are editing. The “.” and “—” keys are used to scroll an individual character selection or numeric numbers can be entered directly.
4. Press the right arrow key to activate the U1 field so you can change the name of the controller. Use the right and left arrow keys to move across the field to select each letter, and remember to use the “.” and “ — ” keys to toggle letters.
5. Press the down arrow key to move from the U1 field to the BUZZER field. The default for this field is set to NONE.
Use the “.” and “ — ” keys to scroll through the choices: NONE ,
ALARM , FAULT , LEAK , SPILL , EVAC , or MN OFF (monitor is offline and is no longer monitoring the refrigerant lines).
6. Press the down arrow key to move from the
BUZZER field to the AL ACK field. The default for this field is set to MANUAL , but it is recommended the setting be changed to
AUTO so the zone can automatically reset itself after the condition clears.
NOTE: In MANUAL mode an alarm will not clear until it is acknowledged and the alarm condition is no longer active. Even if the alarm is no longer active and it has been acknowledged, it is not cleared until the next time that zone is read. On a 16-zone device this will take at least four (4) minutes.
7. Press the down arrow key to scroll you to the next screen:
9.2.3. Zone Config Screen 1
The Zone Configuration Screen 1 is used to configure an individual zone:
01: ZONE 01 LOC
01 - REFRIG:
01 - LENGTH:
• ZONE (name) can be 1-12 characters and is an alphanumeric representation of the location of the zone.
• REFRIG (refrigerant) is the gas being detected in that zone. The default is set to R134a and must be changed using the “.” and “ — ” keys to select the appropriate refrigerant.
• LENGTH (tubing length) is the total tubing length for that zone. Length is 500 feet for an active zone and 0 (zero) for a deactivated zone.
The tubing range is 0-500 feet.
NOTE: The “blank” line is used to provide a cursor so the user knows which character they are editing. The “.” and “—” keys are used to scroll an individual character selection or numeric numbers can be entered directly.
8. Press the right arrow key to activate the ZONE
(name of zone) field so you can change the name of the zone. Use the right and left arrow keys to move across the field to select each letter, and remember to use the “.” and “ — ” keys to toggle letters.
9. Press the down arrow key to move from the
ZONE field to the REFRIG field. The default for this field is set to R134a, but use the “.” and
“ — ” keys to scroll through the refrigerant choices.
10. Press the down arrow key to move from the
REFRIG field to the LENGTH field. Enter the length of tubing for the zone.
NOTE: Set LENGTH to 0 (zero) for any zones not being used.
11. Press the down arrow key to display the Zone
Config Screen 2:
48 • RLDS I&O Manual
9.2.4. Zone Config Screen 2
01-ZONE TMP: xxx
01-ALM LEAK: xxx
01-ALM SPIL: xxx
01-ALM EVAC: xxx
This zone screen is where alarm levels for each zone are set. Each zone can be set to a different level for each of the values, and the values activate the relays inside the RLDS.
01 is the variable indicating which zone number you are working with. Use the up and down arrow keys to cycle through the active zones for each RLDS.
Continue for the remaining zones until all zones are configured.
• ZONE TMP is in degrees C
• ALM LEAK= LEAK Level: Level to trigger a leak alarm in PPM. (Default is 100 with a range of 1-1000 PPM)
• ALM SPIL= SPILL Level: Level to trigger a spill alarm in PPM. (Default is 300 with a range of 1-1000 PPM)
• ALM EVAC= EVACUATE Level: Level to trigger an evacuate alarm in PPM. (Default is
500 with a range of 1-1000 PPM)
Press the down arrow from the Zone Config Screen 2 to display the RLDS Configuration Option (CONFIG
OPTION) screen. ( Section 11.4.3.
)
The WAITING ON WRITE TO RLDS message displays, and after a short interval prompts you to the
CONFIG OPTION screen.
9.3. STATUS OPTION Screen
From the STATUS OPTION screen, you are able to check zone status (individual zones), ctrl status
(overall controller status), and diagnostics (diagnostic zone data).
To display ZONE STATUS: (individual zones), press the right arrow key and press 1.
Press the down arrow key twice. The ZONE STATUS screen displays:
9.3.1. Zone Status Screen
01: ZONE 01 LOC
1-01: 0 LEAK A
02: ZONE 02 LOC
1-02: A
ACKNOWLEDGING ALARMS:
Each status will be listed for each individual zone, and any alarms can be noted from here.
Press the down arrow key from the Zone Status screen to scroll through the status concentration for each of the zones in use. The PPM concentration will be shown, alarm/failure indication, and if the alarm is acknowledged. If the zone is normal (no alarm detected), the alarm/failure fields and alarm acknowledge field (where LEAK A appears) should be blank. In order to acknowledge the alarm, press the
CANCEL key so the A appears next to the alarm.
LEAK, SPIL(L), or EVAC(UATE) will display if there is an alarm. If there is a flow problem (failure) for the zone, FLOW displays. A failure cannot be acknowledged--only LEAK, SPIL, or EVAC alarms can be acknowledged.
Press the down arrow key to scroll through and view all of the zones.
NOTE: If the user selects a specific channel that is an alarm and presses the CANCEL key, the alarm will be acknowledged.
To display CTRL STATUS: (overall controller status), press the right arrow key and press 2 . Press the down arrow key twice. The General Controller
(CTRL STATUS) screen displays:
STATUS OPTION:
1 = ZONE STATUS
2 = CTRL STATUS
3 = DIAGNOSTICS
STATUS OPTION Screen Quick Setups for Hand-Held Terminal (HHT) • 49
9.3.2. General Controller (CTRL
STATUS) Screen
Ux-MODE: NORMAL
Ux-STAT: <ZEROING:SAMPLE>
Ux-ALARM CNT:
Ux-ACT ZONE:
NOTE: x is the RLDS.
If the user selects the MODE field they will be able to change the mode the zone is in. If the user selects the ACT ZONE field, the current zone being sampled can be changed.
The user can toggle the zone mode (in the MODE field) by pressing the right arrow key to activate the field and using the “.” and “ — ” keys to select between
NORMAL , HOLD , and SERVICE . If the zone is set to HOLD mode, the zone is continuously sampled.
Press the down or up arrow key to go back to the
STATUS OPTION screen. Your changes are saved and data written upon scrolling back to the STATUS
OPTION screen.
NOTE: When setting up multiple zones in one area (such as a motor room), stagger these zones as they enter the RLDS. For example, if there are two motor rooms served by one RLDS, each motor room has three sensing zones.
Make the first motor room zones 1, 3, and 5, and make the second motor room zones 2, 4, and 6. This will allow the leak detection system to return to that area being sensed more regularly.
If the zone exists in a location where air flow will affect the dispersion of refrigerant, reduce the alarm limits to a lower level than usual. This will allow for dispersion of the refrigerant in the air.
50 • RLDS I&O Manual
10 Hand-Held
Terminal (HHT) for use with the
Gateway and
RLDS Controller
The Hand-Held Terminal (HHT) connects directly to the Gateway and is used for the initial setup and to run the system. The HHT allows the user to make setpoint and setup adjustments during system startup, and changes for routine or emergency maintenance. The HHT displays several screens for viewing leak system status, making control set point adjustments, and adjusting at what PPM an alarm should sound. Setpoint changes made through the
HHT are transferred to the RLDS controller and overwrite any existing set points.
The HHT shares the communication port with the I/O
Net, and while the HHT is plugged in you can get a momentary loss of communication on the I/O Net.
This may result in concentrations, showing NONE momentarily.
• Down arrow key - moves to the next edit field if one is selected or advances to the next screen if no edit field is selected.
• Up arrow key - moves to the previous edit field if one is selected or moves back to the previous screen if no field is selected.
• “ .
” - Toggle option select fields or scroll alpha characters for names, and acts as a decimal point for floating point numbers.
The period key is the lower-most button on the bottom left of the HHT.
• “ — ” - Toggle option select fields or scroll alpha characters for names, and acts as a minus sign for numeric entry.
The dash key is the lower-most button on the bottom right of the HHT.
NOTE: Editable fields are activated when the right arrow appears next to them.
10.1. HHT Key Operations
The arrow keys will be used to move between fields and screens.
Special Keys:
• F1 - Save current changes and go back to
Screen 1 (Home screen).
• F2 - Save current changes and go back to
Screen 3 (SELECT RLDS screen).
• CANCEL - Clear an edit field or acknowledge an alarm on the status screen.
• ENTER - Checks if the entry is valid.
• Right arrow key - moves to the next editable field or moves right one character in alpha name fields.
• Left arrow key - moves to the previous edit field or moves left one character in alpha name fields.
HHT Key Operations Hand-Held Terminal (HHT) for use with the Gateway and RLDS Controller • 51
11 Main Screens
11.1. Home Screen (F1
Screen)
Press F1 at any point to save changes and display the
Home screen:
RLDS GW-810-3760
VER: 1.10B04
FAIL: I/O NET
(PRESS DOWN ARROW)
The HHT is used to display the following on the
Home screen:
• RLDS GW-810-3760 : Model information
• 1.10B04
: Version number
• FAIL: I/O NET : Displays the operation mode on the third line of the HHT screen. This indicates which type of area controller the
RLDS Gateway is attached to. The dip switch 8 is set to ON or OFF.
ON = REFLECS, OFF = E2, Einstein. If a failure condition exists with the RLDS
Gateway, this line shows one of the following failure messages:
FAIL: I/O NET indicates that no communication with the I/O Net exists, and that communication between the controllers is down.
FAIL: FLASH/CLK indicates the hardware is bad and the Gateway should be replaced.
FAIL: USER CFG indicates that no RLDS units have been found on the network, and have not been configured by the user.
FAIL: RLDS CTRL indicates that one or more
RLDS controllers are down.
• PRESS DOWN ARROW indicates what to do next.
NOTE: Pressing the down arrow scrolls you to the next screen.
11.2. RLDS Enable Screen
The second screen will show whether a particular unit is enabled, disabled, or unknown. When the RLDS
Gateway first powers up it will show
UNKOWN for all units. It will then start scanning for each unit. If it finds a unit, it marks it as ENABLED .
If an RLDS is not present on the network, the user can mark that RLDS as DISABLED to prevent the Gateway from scanning for that unit. When the unit is disabled, the Gateway stops trying to access the RLDS controller and does not respond to the association request on the I/O Network.
RLDS LIST:
RLDS1: ENABLED
RLDS2: DISABLED
RLDS3: DISABLED
Press the down arrow to go to the next screen:
11.3. SELECT RLDS Screen (F2
Screen)
Press F2 at any point to save changes and display the
SELECT RLDS screen:
SELECT RLDS: 1
LDS1: ONLINE
RLDS2: DISABLED
RLDS3: DISABLED
NOTE: SELECT RLDS: 1 defaults to 1.
The F2 screen allows you to select the desired RLDS.
The F2 screen shows the general ONLINE or OF-
FLINE status for the enabled RLDS controllers. ON-
LINE means the Gateway is successfully communicating with an enabled RLDS controller. If it is unknown whether an RLDS is present on the network, the screen will display UNKNOWN .
52 • RLDS I&O Manual 026-1309 Rev 8
Select the desired RLDS by pressing the right arrow key and selecting the desired RLDS number.
Press the down arrow key to prompt you to the
Operation Select (OPTION) screen.
The WAITING ON READ FROM RLDS message displays, and after a short delay prompts you to the Operation Select (OPTION) screen.
11.4. Operation Select
(OPTION) Screen
The Operation Select (OPTION) screen enables the user to select the following entry points:
OPTION: 1
1 = RLDS STATUS
2 = RLDS FAULTS
3 = RLDS CONFIG
NOTE: OPTION: 1 defaults to 1.
Press the right arrow key to enable you to change the number selection next to OPTION . When a right arrow appears after OPTION , press the number key of the desired screen (1,2, or 3). Press the down arrow key twice to display the selected screen.
• Select 1 to access the RLDS STATUS screen
See
Section 11.5., STATUS OPTION Screen .
• Select 2 to access the RLDS FAULTS screen
See
Section 11.4.2., RLDS FAULTS (SYSTEM
• Select 3 to access the RLDS CONFIG screen
See
Section 11.4.3., RLDS Configuration Option
11.4.1. RLDS STATUS (STATUS
OPTION) Screen
The STATUS OPTION screen allows you to check individual zones, overall controller status, and diagnostic data. Refer to
to find out more information about accessing these screens.
STATUS OPTION:
1 = ZONE STATUS
2 = CTRL STATUS
3 = DIAGNOSTICS
• ZONE STATUS gives status on individual zones
See
Section 11.5.1., Zone Status Screen .
• CTRL STATUS is overall controller status
See Section 11.5.2., General Controller (CTRL STA-
.
• DIAGNOSTICS is diagnostic zone data
See
Section 11.5.3., DIAGNOSTICS Screen 1: Sensor Data Register
.
11.4.2. RLDS FAULTS (SYSTEM
FAULTS) screen
From the Operation Select (OPTION) screen, (
RLDS FAULTS by pressing the right arrow key, selecting 2 , and pressing the down arrow key twice.
The RLDS FAULTS screen will display a list of the system failures associated with the selected RLDS.
One failure will be displayed on each line.
NOTE: Once a fault is detected and repaired, the unit will go through an entire cycle and the fault will clear itself and return to normal.
SYSTEM FAULTS
The following are failure messages that are used:
CLIPPNG FAULT - A/D out of range
ZERO FAULT - Zero voltage outside factory limits
NO FLOW - No flow on any zone
PURGE FLOW - No flow on purge
ZONE FLOW - No flow on one or more zones
TRIGGER FAULT - IR Source clock trigger missing
CONFIG FAULT - No zones enabled
Operation Select (OPTION) Screen Main Screens • 53
LOOP FAULT - Open current loop
PRESSURE RANGE - Pressure out of range
BENCH TEMP - Bench temperature out of range
BOX TEMP - Box temperature fault
11.4.3. RLDS Configuration Option
(CONFIG OPTION) Screen
From the Operation Select (OPTION) screen, (
RLDS CONFIG by pressing the right arrow key, selecting 3 , and pressing the down arrow key twice. The CONFIG OPTION screen displays and allows the user to configure the selected
RLDS:
CONFIG OPTION: 1
1 = RLDS CTRL
2 = TIME/DATE
3 = CALIB GASES
Press the right arrow key to enable you to change the number selection that appears next to CONFIG OP-
TION . When a right arrow appears after
CONFIG OPTION , press the number key of the desired screen (1,2, or 3). Press the down arrow key twice to display the selected screen.
• Select 1 to access the General Configuration 1
Screen
See
Section 11.4.4., General Configuration 1
• Select 2 to access the Time/Date screen
See
Section 11.4.8., Time/Date Screen
.
• Select 3 to access the Calibrate/Refrigerant screens
See
Section 11.4.9., Calibrate Gas Screen 1 .
11.4.4. General Configuration 1
Screen
From the CONFIG OPTION screen, press the right arrow key and then press the 1 key for RLDS CTRL .
Press the down arrow key twice to display the General
Configuration 1 (a non-editable) screen:
Ux: ENABLED:DISABLED
Ux- ZONES: 8
Ux- MODEL: 300
Ux- REV : 1.12
NOTE: x is the RLDS currently being accessed.
Press the down arrow key to display the General Configuration 2 screen:
11.4.5. General Configuration 2
Screen
1 - BUZZER: NONE
1 - AL ACK: MANUAL
NOTE: The “blank” line is used to provide a cursor so the user knows which character they are editing. The “.” and “—” keys are used to scroll an individual character selection or numeric numbers can be entered directly.
Press the right arrow key to activate the U1 field so you can change the name of the controller. Use the right and left arrow keys to move across the field to select each letter, and remember to use the “.” and
“ — ” keys to toggle letters.
Press the down arrow key to move from the U1 field to the BUZZER field. The default for this field is set to NONE.
Use the “.” and “ — ” keys to scroll through the choices: NONE , ALARM , FAULT , LEAK ,
SPILL , EVAC , or MN OFF (monitor is offline and is no longer monitoring the refrigerant lines).
Press the down arrow key to move from the BUZZER field to the AL ACK field. The default for this field is set to MANUAL , but it is recommended the setting be changed to AUTO so the zone can automatically reset itself after the condition clears.
54 • RLDS I&O Manual 026-1309 Rev 8
NOTE: In MANUAL mode, an alarm will not clear until it is acknowledged and the alarm condition is no longer active. Even if the alarm is no longer active and it has been acknowledged, it is not cleared until the next time that zone is read. On a 16-zone device this will take at least four (4) minutes.
The down arrow key will scroll you to the next screen:
11.4.6. Zone Config Screen 1
The Zone Configuration Screen 1 is used to configure an individual zone:
Press the down arrow key to move from the
REFRIG field to the LENGTH field. Enter the length (1’ to 500’) of tubing for the zone.
NOTE: Set LENGTH to 0 (zero) for any zones not being used.
11.4.7. Zone Config Screen 2
01: ZONE 01 LOC
01 - REFRIG:
01 - LENGTH:
• ZONE (name) can be 1-12 characters and is an alphanumeric representation of the location of the zone.
• REFRIG (refrigerant) is the gas being detected in that zone. The default is set to R134a and must be changed using the “.” and “ — ” keys to select the appropriate refrigerant.
• LENGTH (tubing length) is the total tubing length for that zone. Length is 500 feet for an active zone and 0 (zero) for a deactivated zone.
The tubing length range is 0-500 feet.
NOTE: The “blank” line is used to provide a cursor so the user knows which character they are editing. The “.” and “—” keys are used to scroll an individual character selection or numeric numbers can be entered directly.
Press the right arrow key to activate the ZONE (name of zone) field so you can change the name of the zone.
Use the right and left arrow keys to move across the field to select each letter, and remember to use the “.” and “ — ” keys to toggle letters.
Press the down arrow key to move from the ZONE field to the REFRIG field. The default for this field is set to R134a, but use the “.” and “ — ” keys to scroll through the refrigerant choices.
01-ZONE TMP: xxx
01-ALM LEAK: xxx
01-ALM SPIL: xxx
01-ALM EVAC: xxx
This zone screen is where alarm levels for each zone are set. Each zone can be set to a different level for each of the values, and the values activate the relays inside the RLDS.
01 is the variable indicating which zone number you are working with. Use the up and down arrow keys to cycle through the active zones for each RLDS. Continue for the remaining zones until all zones are configured.
• ZONE TMP is in degrees C
• ALM LEAK= LEAK Level: Level to trigger a leak alarm in PPM. (Default is 100 with a range of 1-1000 PPM)
• ALM SPIL= SPILL Level: Level to trigger a spill alarm in PPM. (Default is 300 with a range of 1-1000 PPM)
• ALM EVAC= EVACUATE Level: Level to trigger an evacuate alarm in PPM. (Default is
500 with a range of 1-1000 PPM)
Press the down arrow from the Zone Config Screen 2 to display the RLDS Configuration Option (CONFIG
OPTION) screen. (
Operation Select (OPTION) Screen Main Screens • 55
NOTE: When setting up multiple zones in one area (such as a motor room), stagger these zones as they enter the RLDS. For example, if there are two motor rooms served by one
RLDS, each motor room has three sensing zones. Make the first motor room zones 1, 3, and 5, and make the second motor room zones 2, 4, and 6. This will allow the leak detection system to return to that area being sensed more regularly.
If the zone exists in a location where air flow will affect the dispersion of refrigerant, reduce the alarm limits to a lower level than usual. This will allow for dispersion of the refrigerant in the air.
11.4.8. Time/Date Screen
From the CONFIG OPTION screen, set the time and date. Press the right arrow key and select 2 . Press the down arrow key twice to open the TIME/DATE screen:
The Calibrate Data message is used to calibrate the gases used. It is read only if the user enters the configuration screen for HHT screens.
From the CONFIG OPTION screen, press the right arrow key and then press the 3 key for
CALIB GASES . Press the down arrow key twice and wait for the WAITING ON READ FROM RLDS message to clear to display the Calibration Gas screens. x - R11: xxx.x x - R12: xxx.x x - R22: xxx.x
x - R23: xxx.x
NOTE: User enter a floating point number for x.
1-DATE: xx-xx-xx
1-TIME: xx:xx:xx
NOTE: For TIME, enter military time only.
Press the down arrow key so the Calibrate Gas Screen
1 will cycle through all gases and view the available gases in the gas library. Press the down arrow key to cycle Calibrate Gas screens 2 and 3 to complete the calibration process:
11.4.10. Calibrate Gas Screen 2
A change in the Time/Date on any one of the RLDS controllers changes ALL of the RLDS controllers on the network.
Press the right arrow key to edit the fields. The right and down arrow keys scroll downward through the list, while the left or up arrow keys will backspace the arrow so you may go back to change a field.
Press the up arrow key to scroll back up to the
CONFIG OPTION screen to calibrate gases. Your changes are saved and the data is written when you scroll back up to the CONFIG OPTION screen.
11.4.9. Calibrate Gas Screen 1
CAUTION: The Calibrate Gas screens are rarely used. Before modifying values in the
Calibration screens, contact your Emerson
Electronics and Solutions representative for
Correction Values.
1 - CURVE 1: xxx
1 - CURVE 2: xxx
1 - CURVE 3: xxx
<blank>
NOTE: User enter a curve number for New
Gas Type 1 for x.
Use the “.” and “ — ” keys to scroll through the supported gas/refrigerants.
Press the down arrow key:
11.4.11. Calibrate Gas Screen 3
User can select names for each new gas/refrigerants by pressing the right arrow key to activate the field and using the “.” and “ — ” keys to toggle the letters.
56 • RLDS I&O Manual 026-1309 Rev 8
11.5.1. Zone Status Screen
1: NEW GAS1
2: NEW GAS2
3: NEW GAS3
Press the down arrow key:
11.4.11.1. Calibrate Gas Screen 3 Continued
3: NEW GAS3
The default gas name is NEW GAS1 .
NOTE: The “blank” line is used to provide a cursor so the user knows which character they are editing. The user can use “.” and “—” keys to scroll an individual character selection or numeric numbers can be entered directly.
Pressing the down arrow key brings you back to the
CONFIG OPTION screen. To move back to the STA-
TUS OPTION screen, first press the up arrow key to go back to the OPTION screen and select 1 for RLDS
STATUS. You should now be back at the STATUS
OPTION screen.
11.5. STATUS OPTION Screen
From the STATUS OPTION screen, you are able to check zone status (individual zones), ctrl status (overall controller status), and diagnostics (diagnostic zone data).
STATUS OPTION:
1 = ZONE STATUS
2 = CTRL STATUS
3 = DIAGNOSTICS
To display ZONE STATUS: (individual zones), press the right arrow key and press 1.
Press the down arrow key twice. The ZONE STATUS screen displays.
01: ZONE 01 LOC
1-01: 0 LEAK A
02: ZONE 02 LOC
1-02: A
The PPM count, alarm status, and alarm acknowledge information is displayed for each individual zone.
Press the down arrow key from the Zone Status screen to scroll through the status concentration for each of the zones in use. The PPM concentration will be shown, alarm/failure indication, and if the alarm is acknowledged. If the zone is normal (no alarm detected), the alarm/failure fields and alarm acknowledge field (where LEAK A appears) should be blank.
ACKNOWLEDGING ALARMS
In order to acknowledge an alarm, press the left or right arrow keys to select the zone and then press the
CANCEL key so the A appears next to the alarm.
When the A appears, the alarm has been acknowledged.
LEAK, SPIL(L), or EVAC(UATE) will display if there is an alarm. If there is a flow problem (failure) for the zone, FLOW displays. A failure cannot be acknowledged--only LEAK, SPIL, or EVAC alarms can be acknowledged.
Use the down arrow key to scroll through and view all of the zones.
After you have scrolled through the zones you are back at the STATUS OPTION screen where you can make another selection.
To display CTRL STATUS: (overall controller status), press the right arrow key and press 2 . Press the down arrow key twice. The General Controller
(CTRL STATUS) screen displays:
11.5.2. General Controller (CTRL
STATUS) Screen
Ux-MODE: NORMAL
Ux-STAT: <ZEROING:SAMPLE>
Ux-ALARM CNT:
Ux-ACT ZONE:
STATUS OPTION Screen Main Screens • 57
NOTE: x is the RLDS.
11.5.4. Screen 2: Sensor Data
Register
If the user selects the MODE field they will be able to change the mode the zone is in. If the user selects the ACT ZONE field, the current zone being sampled can be changed.
The user can toggle the zone mode (in the MODE field) by pressing the right arrow key to activate the field and using the “.” and “ — ” keys to select between
NORMAL , HOLD , and SERVICE . If the zone is set to HOLD mode, the zone is continuously sampled.
Press the down or up arrow key to go back to the
STATUS OPTION screen. Your changes are saved and data written upon scrolling back to the STATUS
OPTION screen.
To display DIAGNOSTICS: (diagnostic zone data), press the right arrow key and press 3 . Press the down arrow key twice. The first screen in a series of seven displays:
11.5.3. DIAGNOSTICS Screen 1:
Sensor Data Register x-BOX T :
x-BOX V : x-BNCH T: x-BNCH V:
• BOX T is enclosure temperature in degrees C along with the raw voltage from the temperature sensor.
• BOX V is box temperature sensor output voltage.
• BNCH T is optical bench temperature in degrees C. The current IR sensor temperature in degrees C as well as the raw voltage coming from the temperature sensor itself. This value can range from ambient to ambient +15 degrees
C.
• BNCH V is bench temperature sensor output voltage.
Press the down arrow key to display the third screen:
11.5.5. Screen 3: Sensor Data
Register
NOTE: Please refer to Section 8.10.2., Diagnostic Screen Overview for a complete list of values and definitions.
DIAGNOSTIC INFO
x-PRESS :
x-P VOLT:
x-VAC P :
• PRESS is the current absolute manifold pressure in PSIA along with the output voltage of the pressure sensor. This value should always be 0.2 to 1.0 PSIA below ambient.
• P VOLT is pressure sensor output voltage.
• VAC P is the current absolute manifold pressure in PSIA along with the output voltage of the pressure sensor. This value should always be 0.2 to 1.0 PSIA below ambient.
Press the down arrow key to display the second screen: x-AMB P :
x-BNCH Z:
x-BOX Z :
• AMB P is measured every purge cycle with the sample pump off and the manifold open. Its value is weather and altitude dependent and can range from 10.0 to 15.5 PSIA.
• BNCH Z is optical bench temperature in degrees C at last zero interval.
• BOX Z is box temperature in degrees C at last zeroing.
Press the down arrow key to display the fourth screen:
58 • RLDS I&O Manual 026-1309 Rev 8
11.5.6. Screen 4: Sensor Data
Register
11.5.8. Screen 6: Sensor Data
Register x-PEAK C:
x-PEAK V: x-AVG V: x-ZERO V:
• PEAK C is the current peak to peak A/D counts from detector.
• PEAK V is the current peak to peak voltage from detector.
• AVG V is the running average voltage from detector.
• ZERO V is the voltage measured at last zeroing and the IR sensor output that was stored during the last purge cycle.
Press the down arrow key to display the fifth screen:
11.5.7. Screen 5: Sensor Data
Register x-STPPPM:
x-BNCH L: x-AMB L :
• STPPPM is PPM corrected to STP (1 atm, 25 deg C).
• BNCH L is micromoles/liter in bench
(uncorrected).
• AMB L is micromoles/liter corrected to ambient pressure.
Press the down arrow key to display the seventh screen:
11.5.9. Screen 7: Communication
Statistics x-NOISE :
x-AU :
x-AVG AU:
x-BNCH P:
• NOISE is the largest change in running average: 16-point running average of the noise portion of IR bench output. This reading is valuable mainly when refrigerant is NOT present.
• AU is the current absorbance value.
• AVG AU is the running average of absorbance level (Average Absorbency). In the absence of refrigerant, the absorbency is 0.000AU. When sampling refrigerants, its value varies proportionally with the refrigerant concentration.
• BNCH P is PPM in bench, based on zone gas selection (uncorrected).
Press the down arrow key to display the sixth screen:
SENT TRY NO
1: <ct> <ct> <ct>
2: <ct> <ct> <ct>
3: <ct> <ct> <ct>
• SENT is total messages sent.
• TRY is number of retries needed for a message.
• NO is no response after all four tries.
• 1: <ct> <ct> <ct> is RLDS 1 count for each statistic.
• 2: <ct> <ct> <ct> is RLDS 2 count for each statistic.
• 3: <ct> <ct> <ct> is RLDS 3 count for each statistic.
Press the down arrow key to go back to the
STATUS OPTION screen. Your changes are saved and the data is written. Statistics are cleared on reset.
STATUS OPTION Screen Main Screens • 59
12 RLDS Setup on
REFLECS, E2, and
Einstein
Controller
Interfaces
Dip switch 8 on the Gateway should be set to the OFF position for E2, Einstein and the ON position for
REFLECS controllers.
12.1. REFLECS Setup for RLDS
Set dip switch 8 to ON and follow the steps for setting up RLDS units through the REFLECS controller interface:
1. Log on.
2. Press 7 for Configuration to reach the
CONFIGURATION screen.
Input Definitions should be set here to show how the sensor control is linked to the zone. The number of devices and RLDS units are connected to the
Gateway and enabled is the number of address slots the Gateway will use.
3. Press 1 for Input Definitions to reach the
INPUT DEFINITIONS screen.
4. Pressing the down arrow several times will get you to the input list of SENS01-48 . Bd (board) is the address of the Gateway, Pt (point) is the zone and allows you to define where the sensor input comes from.
The board number for the RLDS setup is the address of the Gateway. If there are three or less
RLDS controllers connected to a Gateway, the
Gateway address = the RLDS address. However, if there are more than three RLDS controllers, the second Gateway address will be the one entered for the board number, but the RLDS controllers are set 1 to 3 on the second Gateway.
5. Press 0 (zero) to go back to the
CONFIGURATION screen.
6. Press 7 for I/O Brd Setup to reach the I/O
BOARD MENU screen.
7. Press 2 to Set Device #’s .
The Gateway will react as three 16AI boards. The number of RLDS controllers plus the real number of
16AIs = the total number of 16AIs to enter in the next step:
8. At the I/O BOARD DEVICE NUMBERS screen, press the down arrow key to reach
Number 16AI Boards and enter the number of how many 16AI boards and RLDS controllers there are. Press Enter.
9. Arrow down to the I/O BOARD MENU and press 0 (zero) twice to go back to the MAIN
MENU screen.
10.Press 4 for Sensor Control .
11.Press 2 for Setup --up to 48 sensor control programs are allowed. Select one of the 48 units and press Enter to reach the SENSOR
SETUP screen.
12.Press the right arrow to move to the Name field to change the name, and press the down or right arrow to move to the (sensor) Type field. Use the “.” and “ — ” keys to scroll through the options and select IRLDS .
13.Use the arrow keys to move off the active fields and press 0 (zero) twice to go back to the main screen.
12.2. E2 Version 3.01 and below
Setup for RLDS (without
Gateway)
Set dip switch 8 to OFF and follow the steps for s etting up RLDS units through the E2 controller interface
1. Log in to the E2 with Level 4 access.
2. Press - Connected I/O Boards
60 • RLDS I&O Manual 026-1309 Rev 8
and Controllers . 2. Select 185.
for IR Leak Detection .
Figure 12-1 - Connected I/O Setup Screen
3. Under the I/O Network tab, set the number of desired RLDS controllers under IRLDS .
4. Press the key to return to the E2 home screen and save changes.
5. Set the Gateway to 1. Each Gateway can handle three RLDS controllers, so if four
RLDS controllers are on the network, two
Gateways are needed. The first Gateway will be address 1 and the RLDS units are numbered as 1,2,3. The second Gateway will be addressed as 4, but the RLDS is set to 1 because all units on the Gateway are numbered sequentially 1 to 3. The RLDS controllers are always numbered 1 to 3 when connected to the
Gateway.
To see a summary of RLDS controllers on the network:
1. Press - Configured Applications .
Figure 12-2 - Configured Applications
3. The leak detectors are listed on the status screen. Press the down arrow to highlight a unit and to go the setup screen to enter channel, zone information, and more.
Figure 12-3 - RLDS Application Setup Screen
E2 Version 3.01 and below Setup for RLDS (without Gateway) RLDS Setup on REFLECS, E2, and Einstein Controller Interfaces • 61
12.3. Einstein Setup for RLDS
Set dip switch 8 to OFF and follow the steps for setting up RLDS units through the Einstein controller interface:
1. Log on.
2. Press F8 for ACTIONS .
3. Press Y for System Setup .
4. Press 4 for Network Status/Setup .
5. Press 2 for Connected I/O Boards &
Controllers to open the Network Setup screen.
6. Under Boards on I/O Network , set the RLDS number under IRLDS Controllers .
7. Press F9 HOME to go back to the Home screen.
8. Set the Gateway to 1. Each Gateway can handle three RLDS controllers, so if four
RLDS controllers are on the network, two
Gateways are needed. The first Gateway will be address 1 and the RLDS units are numbered as 1, 2, 3. The second Gateway will be addressed as 4, but the RLDS is set to 1 because all units on the Gateway are numbered sequentially 1 to 3. The RLDS controllers are always numbered 1 to 3 when connected to the
Gateway.
To see a summary of RLDS controllers on the network:
1. Press F5 for MORE .
2. Press L for Leak Detection .
3. The leak detectors are listed under
See Summary . Press the down arrow to highlight a unit and press Enter to show the summary of units listed.
The status screen for the selected RLDS controller is shown.
4. F8 for ACTIONS .
5. Press B for Setup --you can name the RLDS in the
Name field.
6. Press the down arrow to the Num Channels field to add the number of zones.
7. Press F10 to go back and see the current status of the zones.
8. Press F9 HOME to go back to the Home screen.
62 • RLDS I&O Manual 026-1309 Rev 8
13 RLDS
Maintenance
13.1. Warnings and
Cautions
WARNING: Shock hazard! Always disconnect the power supply before opening the enclosure of the monitor.
CAUTION: When working inside the instrument be very careful not to dislodge any electrical wiring or pneumatic tubing. The
RLDS contains sensitive electronic
components that can be easily damaged. Be careful not to touch or disturb any of these components.
13.4. Servicing Air Lines and
Replacing Termination
Filters
The gas sample line and optional exhaust line should be checked periodically for obvious signs of kinks, damage and contamination. The gas-sample line and purge-line termination filters prevent dust and dirt from entering the monitor. Both of the filters should be checked periodically.
• A zone flow fault will occur (fault code
<0800>) if the gas-sample line filter becomes blocked.
• A purge flow auto will occur (fault code
<1000>) if the purge-line filter becomes blocked.
Remove the filter from the line and replace it with a new one (P/N 275-0300) .
13.2. Charcoal Filter
The charcoal filter removes refrigerant gas from the purge-air stream during the purging process.
Replace the charcoal filter (P/N 275-0275) approximately every six (6) months, when a zero filter fault occurs (fault code <0100>), or after the monitor has been exposed to unusually high levels of refrigerant gas, such as after an evacuation alarm.
13.3. Hydrophobic Filter
The hydrophobic filter prevents water from entering the detector. A zone flow fault will occur
(fault code <0800>) if this filter becomes blocked.
Replace the hydrophobic filter as required
(P/N 572-0980) .
13.5. Annual Maintenance
To assure peak performance and accuracy of the
RLDS, it is recommended that maintenance be performed on an annual basis. This maintenance routine involves replacing all end-of-line filters, charcoal filter, and internal dust filter/water stop.
These filters prevent dust and dirt from damaging components of the RLDS such as the solenoid manifolds, infrared sensor, and sample pump. If the
RLDS is installed in areas where dust and particulate levels are high, it is recommended that the filters be changed approximately every after three to six months to prevent system faults caused by purge or zone restrictions.
13.5.1. Checking Pump and Bench
Diagnostics
During maintenance is a good time to check the diagnostic screen (“DIAG”) to verify that the detector voltage and pump pressures are within optimum parameters. If they are not, a voltage adjustment or scheduled pump replacement could head off a system fault.
To check the pump and detector diagnostics, enter the diagnostic screen by using the front panel keypad and pressing the arrow key to highlight DIAG.
Warnings and Cautions RLDS Maintenance • 63
Figure 13-1 - Navigating to the Diagnostic Screen
For information about the Diagnostic Screen, refer to
Section 8.10., The Diagnostic Screen .
13.5.2. Gas Testing
To verify monitor operation, gas testing is recommended. This ensures the integrity of the sample tubing is still intact and the sensor is responding to gas. Gas testing can be done either by “bump testing” or by performing a gas verification test.
A bump test is done by exposing each zone to either a liquid or gaseous refrigerant. The test verifies the sample path and checks that the sensor is responding to gas. The refrigerant concentration is not determined.
A gas verification test is done by exposing each zone to a known concentration of gas and verifying that the display readings are within 10% of the applied gas.
Gas verification kits for a variety of refrigerant types are available which contain certified PPM levels of test gas. For more information about gas verification test, refer to Section 14.1.1., Testing with
Gas Verification Kit .
64 • RLDS I&O Manual 026-1309 Rev 8
13.5.3. Annual Maintenance Checklist
Table 13-1 is a checklist to aid in your annual maintenance routines. The RLDS is designed for easy
installation and maintenance. For full details about installation, programming, and operation of the RLDS, refer to the appropriate sections in this manual. For illustration of the internal components, see Section 3.5., RLDS
Interior .
Item Description
Repaired/
Replaced (Y/N)
Checked/
Completed (Y/N)
1 a. Turn the monitor power off.
b. Visually inspect the exterior of monitor for damage and mounting integrity.
c. Inspect air sample tubing for damage and leakage at termination points.
2
3
4
5
Replace the Charcoal purge filter.
Replace the Hydrophobic filter.
Replace the line end filters.
With power off, check all internal wiring terminations and connections.
Close and secure the door and restore power to the monitor.
6
7
8
9
10
Check the Detector Voltage Range on the diagnostic screen.
The range should be 4.20 to 4.28 volts. If adjustment is required, recycle the power by pressing the reset button at the bottom of the motherboard.
Check the sample pump VAC pressures (typical -3.2 to -3.5
DP) at -2 DP prepare to change out pump on next maintenance cycle.
Check the HGM-RD remote display (if applicable) for existing faults or check the node/time out status.
After a 15-minute warm up cycle, unit enters normal operation. After the unit cycles through all zones, verify that no fault conditions are present.
11 Gas test zones with bump gas.
NOTES: ____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
Table 13-1 - Annual Maintenance Checklist
Annual Maintenance RLDS Maintenance • 65
13.6. Replacement Parts and Part Descriptions
Part Number
808-2004
808-2005
808-2008
808-2009
808-2012
808-2013
808-2016
808-2017
808-2018
810-3760
573-0000
275-0275
572-0980
275-0315
275-0300
275-0304
275-0305
270-0810
275-0280
275-0281
275-0282
275-0283
275-0284
275-0285
275-0286
808-2104
808-2105
808-2108
808-2109
Item Description
Standard Accessories and Replacement Parts
RLDS 4 Zone, 5 line-end filters, charcoal filter, t-bolt bracket, 120/240 VAC 50/60 Hz
RLDS 4 Zone, 5 line-end filters, charcoal filter, t-bolt bracket, 120/240 VAC 50/60 Hz, with HHT and Gateway
RLDS 8 Zone, 9 line-end filters, charcoal filter, t-bolt bracket, 120/240 VAC 50/60 Hz
RLDS 8 Zone, 9 line-end filters, charcoal filter, t-bolt bracket, 120/240 VAC 50/60 Hz, with HHT and Gateway
RLDS 12 Zone, 13 line-end filters, charcoal filter, t-bolt bracket, 120/240 VAC 50/60 Hz
RLDS 12 Zone, 13 line-end filters, charcoal filter, t-bolt bracket, 120/240 VAC 50/60 Hz, with HHT and Gateway
RLDS 16 Zone, 17 line-end filters, charcoal filter, t-bolt bracket, 120/240 VAC 50/60 Hz
RLDS 16 Zone, 17 line-end filters, charcoal filter, t-bolt bracket, 120/240 VAC 50/60 Hz, with HHT and Gateway
RLDS 16 Zone, 17 line-end filters, charcoal filter, t-bolt bracket, 120/240 VAC 50/60 Hz
RLDS Gateway
RLDS 4 Zone Expansion Kit
Charcoal Filter
Hydrophobic Air Filter
Line-end Filter Only
Line-end Filter Assembly
Two-way Splitter Kit, contains 1 two-way push-fit splitter, 2 line-end filters
(sample tubing not included)
Three-way Splitter Kit, contains 1 three-way push-fit splitter, 3 line-end filters
(sample tubing not included)
¼” Sample Tubing (100 ft.)
R-22 Gas Verification Kit
R-134a Gas Verification Kit
R-123 Gas Verification Kit
Variable Flow Regulator
1031 Cylinder, 100 PPM R-22
1031 Cylinder, 100 PPM R-134a
1031 Cylinder, 100 PPM R-123
CO
2
-RLDS Units
RLDS-Co
2
4 Zone
RLDS-Co
2
4 Zone, w/HHT & Gateway
RLDS-Co
2
8 Zone
RLDS-Co
2
8 Zone, w/HHT & Gateway
Table 13-2 - RLDS Part Numbers and Descriptions
66 • RLDS I&O Manual 026-1309 Rev 8
Part Number
808-2112
808-2113
808-2116
808-2117
275-0315
275-0231
275-0275
275-0232
275-0233
275-0234
275-0235
275-0236
275-0237
275-0238
275-0239
275-0240
275-0241
275-0242
275-0250
275-0390
275-0251
275-0252
275-0253
275-0254
275-0255
275-0256
275-0257
275-0258
275-0259
275-0260
275-0261
275-0262
275-0263
Item Description
RLDS-Co
2
12 Zone
RLDS-Co
2
12 Zone, w/HHT & Gateway
RLDS-Co
2
16 Zone
RLDS-Co
2
16 Zone, w/HHT & Gateway
HGM-MZ Accessory Kits and Filters
Line End Filter Only
Line End Filter Assembly
Charcoal Filter Assembly with Fittings
Internal water stop
End-of-Line Water Stop
In-line Water Trap
In-line Water Trap, Replacement Filter Element
In-line Water Trap, Mounting Bracket
4-Zone Annual Maintenance Kit
8-Zone Annual Maintenance Kit
12-Zone Annual Maintenance Kit
16-Zone Annual Maintenance Kit
Maintenance kit Internal filters only (Charcoal Filter and Hydrophobic filter)
4 Zone Line End Filter Kit (4 line end filters)
Single & Multi-Zone Replacement Parts
Power Fuse, 1 Amp, 250 VAC
NiCad Battery
MZ Key Pad PC Board
4 Zone solenoid block
5 Zone solenoid block (Zones 1 - 4 w/ purge port)
I/R Field replacement kit (halogen gases) (both single and multi-zone)
I/R Field replacement kit (ammonia gas) (both single and multi-zone)
Valve/ Pump Drive PC Board
Remote Display Main PC Board
Display PC Board (Multi-zone)
Universal Power Supply (Both Single and Multi-zone)
Power Entry Board (Both Single and Multi-zone)
Main PC Board (Multi-Zone only)
Microcontroller PCB (Multi-zone)
Pump with Connector (both Single and Multi-Zone)
Table 13-2 - RLDS Part Numbers and Descriptions
Replacement Parts and Part Descriptions RLDS Maintenance • 67
14 Appendix: RLDS
Calibration
14.1. Calibration Check
The RLDS provides for the continuous monitoring of refrigerant gas levels in up to 16 separate test zones or channels. The instrument can be programmed to monitor a variety of refrigerants and independent leak
(small), spill (medium), and evacuation (large) levels may be designated for each zone. Below are the steps for testing the calibration or gas verification of the
RLDS unit using a gas verification kit and reference gas cylinder to measure the calibration of the unit.
14.1.1. Testing with Gas Verification
Kit
Materials Required
• Reference gas cylinder
• Variable flow regulator
• RLDS unit
Steps
1. Go to Step 3 if the RLDS is powered up and communicating. Verify that the RLDS is communicating on power up: In the upper left corner of the RLDS screen, the message
CHECK NODE will display first. When the unit is communicating properly, CHECK
NODE will be replaced by the name programmed into the unit.
2. When the unit is communicating normally, it will be in warm-up mode. Allow the warm up cycle to complete before proceeding to the next step (approximately 15 minutes.).
3. Connect:
• The variable regulator ( P/N 275-0283 ) to the reference gas cylinder.
• The 3/16” tubing to the output of the regulator.
4. Disconnect the existing tubing from Zone 1 on the RLDS.
5. From the RLDS Main menu, press the Enter button and select System Setup .
1. From the SETUP menu, select SYSTEM .
2. Navigate to Zone Hold and set to 15 minutes.
3. Select ReZero Mode and change to Auto .
4. Return to the Main Setup by pressing the
ESC button.
6. Enter the Zones menu from the Main Menu. In
Zone 1:
5. Select Refrigerant and change the selection to match the type of refrigerant located on the reference cylinder.
6. Select Distance and change to 5 ft.
7. Return to the System Menu by pressing the
ESC button twice.
7. From the RLDS System Menu, press the button that corresponds to Zones on the menu to go into the Zone View Menu.
8. Select the zone at the top level screen.
9. Press and hold down the ENTER key until the unit beeps. The word HOLDING will blink in the status box.
10. While in the hold mode, further investigation of the zone's status can be made by navigating to that zone’s Setup Screen 1 .
11. To release the zone from the Hold Mode, press and hold down the ENTER key until the unit beeps and the screen display returns to normal.
8. Arrow over to System Setup .
Enter the Diagnostic screen by pressing DIAG .
9. Verify that the unit is not in a purge cycle. This can be done by verifying the airflow in Zone 1.
Review and record the pressure (PRES ) reading in the diagnostic screen. If the unit is in a purge cycle, wait until PURGING stops flashing and then review and record the PRES reading in on the diagnostic screen.
10. Connect the tubing from the reference flow regulator to Zone 1 on the manifold of the
RLDS.
NOTES :
• The RLDS Fault LED may illuminate until gas starts to flow from the reference cylinder to the RLDS . The pressure should be below the original reading. If the reading does not drop,
Calibration Check Appendix: RLDS Calibration • 69
the unit may be in the purge cycle. If so, wait until the purge cycle ends before continuing.
Slowly adjust the variable flow regulator in a clockwise direction until the pressure is the same as the original reading.
• You may have to block or partially block the relief valve on the variable pressure regulator in order to achieve the appropriate pressure . Allow about 1 minute to stabilize, and then read the first PPM value in the diagnostics screen. The reading should be within +10% of the actual concentration listed on the cylinder.
• The unit may go into a purge cycle during the test process . If this happens, the PPM reading will drop to approximately 0. This does not affect the verification results. However, in order to obtain a valid PPM reading, the unit must be drawing from Zone 1.
11. Close the reference gas cylinder by adjusting the variable flow regulator in a counterclockwise direction until it is fully closed. Reset Zone 1 information (distance, refrigerant, zone hold time) as desired for normal operation.
12. If the reading in Step 10 is not within +10% of the actual concentration listed on the cylinder, verify:
• The pressure reading from Step 9 .
• The tubing is securely connected to the cylinder and Zone 1 input port.
• The proper refrigerant is selected ( Step 6 ).
• The unit is in hold for Zone 1.
• That there is proper pressure from variable flow regulator ( Step 10 ).
• That enough time was given for readings to stabilize and the reading was not taken during a purge cycle ( Steps 9 and 10 ).
If the unit still does not measure within +10% of the concentration listed on the cylinder, please contact
Emerson Electronics and Solutions at 770-425-2724 .
70 • RLDS I&O Manual 026-1309 Rev 8
Index
-A-
Accessories
Additional Features
28
Air Lines
Alarm Conditions
Alarm Detail Screen
Alarm Settings
,
Alarms
-B-
Baud rate
Baud Rate Dip Switch Setting
Board Number Dip Switch Setting
-C-
Calibration
Calibration Factor
Calibration Procedure
Calibration screen
Clearing System Faults
CO2
Atmospheric Concentration
Hardware Specifications
Replacement Parts
Connecting Gateway Board to E2, Einstein, or
REFLECS Network
Connecting to a Site Controller
Controller Interface Setups for RLDS
E2
Einstein
REFLECS
-D-
Default Settings
Diagnostic screen
Digipot
29
Digipot (IR)
Dip switch settings
-E-
E2 Connection
Einstein Connections
Electrical Wiring
Exhaust Line
External Alarm Relays
-F-
Fault Codes
Fault Conditions
Fault Definitions (Critical)
Fault Definitions (Non-Critical)
Faults (System)
Filter Information
Fusing
-G-
Gas Alarm Settings
43
Gateway Addressing
Gateway board
15
Gateway Board Communications
15
Gateway Board LEDs
General Operation
Home Screen 2
General Operation of UI
Alarms
Current Detection Reading
Distance
Evacuation Level
Fault Conditions
Functional Overview
Home Screen 2
Leak Level
Location
Log Interval
Overview
Refrigerant Type
Spill Level
Zone Screen
Zone Temperature
-H-
Hand-Held Terminal
special keys
Hand-Held Terminal Quick Setups
47
control status screen
status option screen
time/date
zone status screen
zones
Hand-Held Terminal Screens
control status
sensor data register screens
status option
time/date
Index • I 71
zone status
Home Screen 2
-I
Installation
Installation Considerations
inspection
Interior diagrams
-L-
Location of Monitor
Logic Diagram
-M-
Maintenance
Annual maintenance
Charcoal filter
Checklist
Gas testing
Hydrophobic filter
Pump and Bench Diagnostics
63
Monitoring Levels
Mounting
Multiple Refrigerants
-N-
Node Address Setting, see Node Address
17
-O-
Overview
-P-
Part Numbers
Password
Placement in Mechanical Room
Programming the RLDS
Additional Features
Alarm Acknowledge (ACK) Mode
Audible Alarm
DET Digipot
29
Detection Limit
IR Digipot
Location
Loop2 Factor
Navigation
Node Address
Number of Zones
Password
Power-up
Re-Zero Mode
Sensor Temp Coefficient
Service Timeout
I-72 • RLDS I&O Manual
Setup Screen 1
Setup Screen 2
Setup Screen 3
28
Zone Hold Mode
Zone Hold Time
Purge Line
-R-
REFLECS Connection
Refrigerants
Replacement Parts
RS485 I/O Termination Jumpers
-S-
Safety Precautions
Sample Intake Lines
Sampling Points
Screw Locations
Service Mode
Setup Screen 1
Setup Screen 2
Setup Screen 3
Setup Screen Map
Specifications
Splitter Kits
-T-
Termination switch settings
Terminator Settings
Troubleshooting
Fault Codes
Tubing Considerations
-W-
Warning and Caution Statements
Warnings and Cautions
,
Wire Connection
-Z-
Zone Hold Mode
Zone Hold Time
Zone Screen
026-1309 Rev 8
For Technical Support call 770-425-2724 or email [email protected]
The contents of this publication are presented for informational purposes only and they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. Emerson Climate Technologies Retail Solutions, Inc. and/or its affiliates (collectively “Emerson”), reserves the right to modify the designs or specifications of such products at any time without notice. Emerson does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any product remains solely with the purchaser and end-user.
026-1309 Emerson is a trademark of Emerson Electric Co. ©2018 Emerson Commercial & Residential Solutions Retail Solutions, Inc. All rights reserved.
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