Emerson RLDS Installation And Operation Manual
Refrigerant Leak Detection System
(RLDS) Installation and Operation
Manual
026-1309 Rev 8
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.
Emerson
1065 Big Shanty Road NW, Suite 100
Kennesaw, GA 30144
770-425-2724 • www.emerson.com
Contents
1 INTRODUCTION.......................................................................................................................................................... 1
1.1. HOW TO USE THIS MANUAL ........................................................................................................................................ 1
1.2. NOTES........................................................................................................................................................................... 1
1.3. SAFETY PRECAUTIONS.................................................................................................................................................. 1
1.3.1. AC Power Supply .................................................................................................................................................. 1
1.3.2. Protective Grounding............................................................................................................................................ 1
1.3.3. Explosive Atmosphere........................................................................................................................................... 1
1.3.4. Proper Exhaust Venting........................................................................................................................................ 1
1.3.5. Working Inside Instrument.................................................................................................................................... 1
1.3.6. Misuse and Modifications to the Instrument......................................................................................................... 1
1.3.7. In Case of Malfunction.......................................................................................................................................... 1
1.3.8. RLDS Fusing......................................................................................................................................................... 2
1.3.9. Installation Category ............................................................................................................................................ 2
1.3.10. Altitude Limit....................................................................................................................................................... 2
1.3.11. Cleaning .............................................................................................................................................................. 2
1.4. WARNING AND CAUTION STATEMENTS ....................................................................................................................... 2
1.4.1. Warning Statements .............................................................................................................................................. 2
1.4.2. Caution Statements ............................................................................................................................................... 2
2 FUNCTIONAL OVERVIEW ....................................................................................................................................... 3
2.1. GENERAL DESCRIPTION................................................................................................................................................ 3
2.2. COMMUNICATION OPTIONS .......................................................................................................................................... 3
2.3. UNDERSTANDING MONITORING LEVELS ...................................................................................................................... 3
2.4. RESPONSE TO THE PRESENCE OF MULTIPLE REFRIGERANTS ....................................................................................... 4
2.5. SUGGESTED LOCATION OF SAMPLING POINTS ............................................................................................................. 4
3 RLDS INSTALLATION ............................................................................................................................................... 6
3.1. RLDS - INSTALLATION CONSIDERATIONS ................................................................................................................... 6
3.1.1. Warnings and Cautions......................................................................................................................................... 6
3.1.2. Inspection .............................................................................................................................................................. 6
3.1.3. Monitor Location .................................................................................................................................................. 6
3.2. RLDS MOUNTING INSTRUCTIONS ................................................................................................................................ 6
3.2.1. Screw Locations .................................................................................................................................................... 6
3.2.2. Installation ............................................................................................................................................................ 7
3.3. RLDS - CONNECTING AIR LINES ................................................................................................................................. 7
3.3.1. Overview ............................................................................................................................................................... 7
3.3.2. Tubing Considerations.......................................................................................................................................... 7
3.3.3. Connecting Purge Line ......................................................................................................................................... 7
3.3.4. Connecting Exhaust Line ...................................................................................................................................... 8
3.3.5. Connecting Sample Intake Lines........................................................................................................................... 8
3.3.6. Considerations ...................................................................................................................................................... 8
3.4. SPLITTER KITS .............................................................................................................................................................. 9
3.4.1. Overview ............................................................................................................................................................... 9
3.4.2. Installation ............................................................................................................................................................ 9
3.5. RLDS INTERIOR ......................................................................................................................................................... 10
3.6. RLDS ELECTRICAL WIRING....................................................................................................................................... 11
3.6.1. Warnings and Cautions....................................................................................................................................... 11
4 CONNECTING COMMUNICATION DEVICES ................................................................................................... 13
Table of Contents • v
4.1. E2 MODBUS DIRECT SUPPORT FOR RLDS .............................................................................................................. 13
4.1.1. Network Connection to E2 .................................................................................................................................. 13
4.1.1.1. COM Port Associations - E2 Versions 3.xx and Below ................................................................................................... 13
4.1.1.2. COM Port Associations - E2 Versions 4.0 and Above..................................................................................................... 13
4.1.1.3. E2 Termination ................................................................................................................................................................. 14
4.1.2. E2 Setup of RLDS................................................................................................................................................ 14
4.1.2.1. Set Up Network Ports ....................................................................................................................................................... 14
4.1.2.2. Add and Connect RLDS ................................................................................................................................................... 14
4.2. E2, EINSTEIN, AND REFLECS CONTROLLERS (THE RLDS GATEWAY BOARD)....................................................... 15
4.2.1. Powering the Gateway Board ............................................................................................................................. 16
4.2.2. Gateway Board Networking ................................................................................................................................ 16
4.2.2.1. Changing Terminator Switch Settings.............................................................................................................................. 17
4.2.2.2. RLDS Node Address ........................................................................................................................................................ 17
4.2.3. Connecting to an E2, Einstein, or REFLECS Site Controller............................................................................. 17
4.2.4. Connecting the Gateway Board to the E2, Einstein, or REFLECS Network...................................................... 18
4.2.4.1. Wire Connection ............................................................................................................................................................... 18
4.2.4.2. Setting the Board Numbering Dip Switch ........................................................................................................................ 18
4.2.4.3. Setting the Baud Rate Dip Switches ................................................................................................................................. 19
4.2.4.4. Setting the RS485 I/O Termination Jumpers.................................................................................................................... 20
4.2.5. Gateway Board Status LEDs............................................................................................................................... 20
4.2.5.1. The General Status LED ................................................................................................................................................... 20
4.2.5.2. The Alarm LED ................................................................................................................................................................ 20
4.2.5.3. RS485 I/O Network Status LED ....................................................................................................................................... 21
4.2.5.4. Receiver Bus Network Status LED................................................................................................................................... 21
5 RLDS - CONNECTING EXTERNAL ALARMS..................................................................................................... 22
5.1. OVERVIEW .................................................................................................................................................................. 22
5.2. CONNECTION............................................................................................................................................................... 22
6 RLDS HARDWARE SPECIFICATIONS ................................................................................................................. 23
7 PROGRAMMING SETUP AND UI NAVIGATION FOR RLDS - DISPLAY SCREENS.................................. 25
7.1. NAVIGATION KEYS ..................................................................................................................................................... 25
7.2. INITIAL POWER UP...................................................................................................................................................... 25
7.3. NAVIGATE TO THE FIRST SETUP SCREEN ................................................................................................................... 25
7.4. NAVIGATE TO THE SECOND SETUP SCREEN ............................................................................................................... 26
7.5. LOCATION ................................................................................................................................................................... 26
7.6. NUMBER OF ZONES INSTALLED .................................................................................................................................. 26
7.7. ALARM ACKNOWLEDGE (ACK) - MODE ..................................................................................................................... 26
7.8. AUDIBLE ALARM ........................................................................................................................................................ 26
7.9. ZONE HOLD MODE ..................................................................................................................................................... 27
7.10. ZONE HOLD TIME ..................................................................................................................................................... 27
7.11. DETECTION LIMIT ..................................................................................................................................................... 27
7.12. LOOP2 FACTOR ......................................................................................................................................................... 27
7.13. RE-ZERO MODE ........................................................................................................................................................ 27
7.14. NAVIGATING TO THE THIRD SETUP SCREEN ............................................................................................................ 28
7.15. SERVICE TIMEOUT .................................................................................................................................................... 28
7.16. NODE ADDRESS ........................................................................................................................................................ 28
7.17. PASSWORD ................................................................................................................................................................ 28
7.18. ACCESSING ADDITIONAL FEATURES ........................................................................................................................ 28
7.19. DET DIGIPOT............................................................................................................................................................ 29
7.20. SENSOR TEMPERATURE COEFFICIENT ...................................................................................................................... 29
7.21. ACQUIRING TEMPERATURE COEFFICIENT (FACTORY USE ONLY) ........................................................................... 29
7.22. IR DIGIPOT................................................................................................................................................................ 29
8 GENERAL OPERATION OF RLDS - UI................................................................................................................. 30
vi • RLDS I&O Manual 026-1309 Rev 8
8.1. FUNCTIONAL OVERVIEW ............................................................................................................................................ 30
8.2.
THE ZONE SCREEN ..................................................................................................................................................... 30
8.2.1. Location .............................................................................................................................................................. 30
8.2.2. Refrigerant Type ................................................................................................................................................. 30
8.2.3. Distance .............................................................................................................................................................. 30
8.2.4. Zone Temperature............................................................................................................................................... 30
8.2.5. Current Detection Reading ................................................................................................................................. 30
8.2.6. Log Interval......................................................................................................................................................... 31
8.3. NAVIGATING TO THE SECOND HOME SCREEN ........................................................................................................... 31
8.3.1. Leak Level ........................................................................................................................................................... 31
8.3.2. Spill Level............................................................................................................................................................ 31
8.3.3. Evacuation Level................................................................................................................................................. 31
8.3.4. Resetting the Peak PPM Value ........................................................................................................................... 31
8.4. ALARM CONDITIONS .................................................................................................................................................. 32
8.5. FAULT CONDITIONS .................................................................................................................................................... 32
8.6. ALARMS...................................................................................................................................................................... 32
8.6.1. Functional Overview........................................................................................................................................... 32
8.6.2. Responding to Alarms ......................................................................................................................................... 32
8.6.3. Alarm Detail Screen............................................................................................................................................ 33
8.6.4. Acknowledging Alarms ....................................................................................................................................... 33
8.7. SYSTEM FAULTS ......................................................................................................................................................... 33
8.7.1. Functional Overview........................................................................................................................................... 33
8.7.2. Navigating to the Fault Screen ........................................................................................................................... 34
8.7.2.1. Critical Faults.................................................................................................................................................................... 34
8.7.2.2. Non-Critical Faults ........................................................................................................................................................... 34
8.7.3. Reset to Factory Default Settings........................................................................................................................ 35
8.7.3.1. Resetting the RLDS .......................................................................................................................................................... 35
8.7.4. Clearing System Faults ....................................................................................................................................... 35
8.7.5. Viewing Fault Log............................................................................................................................................... 35
8.7.6. Viewing Flow Log ............................................................................................................................................... 36
8.8. THE TREND SCREEN ................................................................................................................................................... 36
8.8.1. Navigating to the Trend Screen .......................................................................................................................... 36
8.9. THE CALIBRATION SCREEN ........................................................................................................................................ 36
8.9.1. Overview ............................................................................................................................................................. 36
8.9.2. Navigating to the Calibration Screen ................................................................................................................. 37
8.9.3. Adjusting Calibration Factor.............................................................................................................................. 37
8.9.4. CO2 Atmospheric Concentration
(RLDS-CO2 Units Only) ................................................................................................................................................. 37
8.9.5. Calibration Procedure ........................................................................................................................................ 37
8.9.6. Programming New Gases ................................................................................................................................... 38
8.10. THE DIAGNOSTIC SCREEN ........................................................................................................................................ 39
8.10.1. Navigating to the Diagnostic Screen ................................................................................................................ 39
8.10.2. Diagnostic Screen Overview............................................................................................................................. 39
8.11. SERVICE MODE ......................................................................................................................................................... 40
9 QUICK SETUPS FOR HAND-HELD TERMINAL (HHT).................................................................................... 47
9.1. TIME/DATE SETUP ...................................................................................................................................................... 47
9.2. ZONE SETUP ............................................................................................................................................................... 47
9.2.1. General Configuration 1 Screen......................................................................................................................... 47
9.2.2. General Configuration 2 Screen......................................................................................................................... 48
9.2.3. Zone Config Screen 1.......................................................................................................................................... 48
9.2.4. Zone Config Screen 2.......................................................................................................................................... 49
9.3. STATUS OPTION SCREEN ....................................................................................................................................... 49
9.3.1. Zone Status Screen .............................................................................................................................................. 49
Table of Contents • vii
9.3.2. General Controller (CTRL STATUS) Screen ...................................................................................................... 50
10 HAND-HELD TERMINAL (HHT) FOR USE WITH THE GATEWAY AND RLDS CONTROLLER ......... 51
10.1. HHT KEY OPERATIONS ............................................................................................................................................ 51
11 MAIN SCREENS ....................................................................................................................................................... 52
11.1. HOME SCREEN (F1 SCREEN)..................................................................................................................................... 52
11.2. RLDS ENABLE SCREEN ............................................................................................................................................ 52
11.3. SELECT RLDS SCREEN (F2 SCREEN)..................................................................................................................... 52
11.4. OPERATION SELECT (OPTION) SCREEN .................................................................................................................. 53
11.4.1. RLDS STATUS (STATUS OPTION) Screen...................................................................................................... 53
11.4.2. RLDS FAULTS (SYSTEM FAULTS) screen...................................................................................................... 53
11.4.3. RLDS Configuration Option (CONFIG OPTION) Screen................................................................................ 54
11.4.4. General Configuration 1 Screen ....................................................................................................................... 54
11.4.5. General Configuration 2 Screen ....................................................................................................................... 54
11.4.6. Zone Config Screen 1 ........................................................................................................................................ 55
11.4.7. Zone Config Screen 2 ........................................................................................................................................ 55
11.4.8. Time/Date Screen .............................................................................................................................................. 56
11.4.9. Calibrate Gas Screen 1 ..................................................................................................................................... 56
11.4.10. Calibrate Gas Screen 2 ................................................................................................................................... 56
11.4.11. Calibrate Gas Screen 3 ................................................................................................................................... 56
11.4.11.1. Calibrate Gas Screen 3 Continued ................................................................................................................................ 57
11.5. STATUS OPTION SCREEN ..................................................................................................................................... 57
11.5.1. Zone Status Screen ............................................................................................................................................ 57
11.5.2. General Controller (CTRL STATUS) Screen.................................................................................................... 57
11.5.3. DIAGNOSTICS Screen 1: Sensor Data Register.............................................................................................. 58
11.5.4. Screen 2: Sensor Data Register ........................................................................................................................ 58
11.5.5. Screen 3: Sensor Data Register ........................................................................................................................ 58
11.5.6. Screen 4: Sensor Data Register ........................................................................................................................ 59
11.5.7. Screen 5: Sensor Data Register ........................................................................................................................ 59
11.5.8. Screen 6: Sensor Data Register ........................................................................................................................ 59
11.5.9. Screen 7: Communication Statistics.................................................................................................................. 59
12 RLDS SETUP ON REFLECS, E2, AND EINSTEIN CONTROLLER INTERFACES ..................................... 60
12.1. REFLECS SETUP FOR RLDS ................................................................................................................................... 60
12.2. E2 VERSION 3.01 AND BELOW SETUP FOR RLDS (WITHOUT GATEWAY)................................................................ 60
12.3. EINSTEIN SETUP FOR RLDS ..................................................................................................................................... 62
13 RLDS MAINTENANCE............................................................................................................................................ 63
13.1. WARNINGS AND CAUTIONS ...................................................................................................................................... 63
13.2. CHARCOAL FILTER ................................................................................................................................................... 63
13.3. HYDROPHOBIC FILTER .............................................................................................................................................. 63
13.4. SERVICING AIR LINES AND REPLACING TERMINATION FILTERS.............................................................................. 63
13.5. ANNUAL MAINTENANCE........................................................................................................................................... 63
13.5.1. Checking Pump and Bench Diagnostics ........................................................................................................... 63
13.5.2. Gas Testing........................................................................................................................................................ 64
13.5.3. Annual Maintenance Checklist.......................................................................................................................... 65
13.6. REPLACEMENT PARTS AND PART DESCRIPTIONS ..................................................................................................... 66
14 APPENDIX: RLDS CALIBRATION....................................................................................................................... 69
14.1. CALIBRATION CHECK ............................................................................................................................................... 69
14.1.1. Testing with Gas Verification Kit...................................................................................................................... 69
INDEX ............................................................................................................................................................................. 71
viii • RLDS I&O Manual 026-1309 Rev 8
1 Introduction
1.1. How to Use This Manual
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
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.
• 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
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 th e RLDS be placed on
a separate circuit (with UPS or surge protection) and
be connected directly to the AC power source.
How to Use This Manual Introduction • 1
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.
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
50VAC
(Type “F”)
F1, F2
Table 1-1 - Fusing Requirements
1AMP, 2
FAST ACTING
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)
1.4. 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.
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.
2 • RLDS I&O Manual 026-1309 Rev 8
2 Functional
Overview
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.
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.
Figure 2-1 - RLDS Front View
2.2. Communication
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
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 Communica-
tion 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 and Section 6, RLDS
Hardware Specifications.
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
hea vier tha n air and t ends to c ollect be low the p oint 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
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 a rea that does
not contain any refrigerant gas. The exhaust line
should run to an outside location if possible. The
comb ined length o f 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.
block any of the zones. Unused zones may
NOTE: For information about using the
2.5. Suggested Location of
RLDS in wet locations, see Section 3.3.6., Considerations.
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 Points
Chiller
Machine Room
Sample Inlet
Pickup Point
Exhaust Fan
Outside Hallway
Aux
Horn/Strobe
Fresh air purge
from area away
from refrigerant
gas
RLDS
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 RLDS Installation
Solenoid
Connections
(this side)
Display Screen
Alarm Light
(Red)
System Fault
Light (Yellow)
Monitor ON
Light (Green)
WARNING: Shock hazard! Always
de-energize the power supply before working
on the interior of the equipment.
Figure 3-1 - RLDS Diagram
Standard accessories needed for a four (4)-point System:
Accessory Part Number
Five (5) Line-End Filters
(Assembly)
Charcoal Filter 275-0275
RLDS Instruction Manual 026-1309
Table 3-1 - RLDS Accessories and Part Numbers
275-0300
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.
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
WARNING: Drilling holes in the RLDS
enclosure may damage the unit and will void
the warranty. Please use the knockouts
provided for electrical connections.
6 • RLDS I&O Manual 026-1309 Rev 8
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
designed for 1/4” (6.35 mm) fasteners. Locate the
TOP
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
13 9/16”
8 55/64”
12 1/4”
2 1/32”
9 5/16”
2 55/64”
Exhaust
Port
Inlet/Purge
Ports
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.
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
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 simp ly 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
RLDS - Connecting Air Lines RLDS Installation • 7
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
provided to ensure clean air is being drawn in through
the purge line. This filter should be mounted close to
the RLDS.
increase monitoring capacity. Please contact
Technical Assistance (770-425-2724) for more
information.
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.
CAUTION: (CO2 Only): Because CO2 is
present in ambient air, the purge line MUST
BE run outside, away from any known sources
of CO
gas. An atmospheric CO2
2
concentration value can be manually entered by the
user in the CAL screen. CO
units. See Section 8.9.4. CO2 Atmospheric Concentration (RLDS-CO2 Units Only).
is supported by RLDS-CO2
2
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
Points) to learn more about where to locate the
monitoring points.
CAUTION: The introduction of contaminants
through the air intake lines can result in
serious and permanent damage to the monitor.
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
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
system. Point the filter vertically downward or
horizontally with a slight downward tilt to
avoid moisture collecting in the filter from
condensation.
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.
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
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 Description
275-0304 Two-way Splitter Kit contains:
1 two-way push-fit splitter,
2 line-end filters
(tubing not included)
275-0305 Three-way Splitter Kit contains:
1 three-way push-fit splitter,
3 line-end filters
(tubing not included)
270-0810 ¼” Sample Tubing (100 ft.)
Table 3-2 - Splitter Kit and Tubing Part Numbers
Splitter Kits RLDS Installation • 9
3.5. RLDS Interior
Universal
Power Supply
Intake
Manifold
Solenoid
Connectors
Dual 4-20 mA
Outputs (Signal
Out Only)
Screw Terminal
Microcontroller
Board
Intake
Manifold
Solenoids
AC Input
Terminals
IR Bench
Gas Out
Gas Sample
Pump
AC Input
Ground Stud
Main
Board
IR Bench
Gas In
AC Input
Ground
Stud
Hydrophobic
Filter
Dual 4-20 mA
Outputs Option
Card Socket
Microcontroller
Board
RLDS
Main Circuit
Board
Terminator
Switch
Relay Connector
Alarm 1,2,3 Fault
Factory
Default
RS485
Connector
4-20 mA Output Only
(DO NOT APPLY POWER)
CPU
Reset
Relay Connectors:
Leak, Spill, Evacuate,
Fault
RS485
Connector
AC Input
Terminals
Figure 3-7 - Diagram of RLDS Interior
Figure 3-8 - RLDS Processor Board Layout
Figure 3-9 - Relay, RS485, and AC Input Connections
10 • RLDS I&O Manual 026-1309 Rev 8
Figure 3-10 - Switch and Fuse Locations
Factory
Default
CPU
Reset
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.
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.
Locate the AC Input Terminals and Ground Stud on
the inside of the monitor (Figure 3-7). 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.
RLDS Electrical Wiring RLDS Installation • 11
• 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
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
E2 PIB COM PORT ASSOCIATIONS
COM1
COM4
COM6
COM2
Serial Device
RS485 COM Port
(2 Connectors)
RS485 COM Card
(2 Connectors)
Serial Device
RS232 Port
POWER INTERFACE BOARD
(PIB)
E2 Modem/Expansion
COM Card Mounted
Above PIB
Plug-In
Modem
Card
COM3
E2 Enclosure (Right Side)
RS485
RS232
E2 PIB COM PORT ASSOCIATIONS
COM1
Serial Device
RS232 Port
POWER INTERFACE BOARD
(PIB)
E2 Enclosure (Right Side)
COM2 COM6
COM4
Serial Device
RS485 COM Ports
Plug-In
Modem
Card
COM3
Communication
Devices
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.
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
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
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
E2 MODBUS Direct Support for RLDS Connecting Communication Devices • 13
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.
,
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.
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.
1. Log in to the E2 with Level 4 access.
2. Press
3. Press
followed by - General
Controller Info.
+ to open the Serial tab of the
General Controller Info setup screens:
• 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.
• 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.
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
5. Locate the RLDS you added to the network list
to return to the Network Setup
menu, then select
(Figure 4-5).
(press
and to scroll through the list) and
highlight with the cursor. Press
Setup.
- Network Summary
for
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
12
12
JP7
REFLECS Controllers
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.
(The RLDS Gateway
Board)
Figure 4-6 - RLDS Gateway Board Layout (P/N 810-3760)
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.
4.2.1. Powering the Gateway Board
Input Voltage 24VAC, Class 2, 50/60Hz
Power 5VA
Table 4-1 - Gateway Power Requirements
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.
Three-Board Six-Board
P/N 640-0056 640-0080
Power Rating 56 VA 80 VA
Table 4-2 - Power Ratings for Emerson Transformers
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).
16 • RLDS I&O Manual 026-1309 Rev 8
Figure 4-7 - Pinout for the 56VA (640-0056) and 80VA (640-
0080) Transformers
4.2.2. Gateway Board Networking
LEFT
R
S
4
8
5
+
R
S
4
8
5
-
0
v
Gateway Board
RS485 -
RS485 +
GND
Side view of
double-stack
Modbus
connector
on Gateway
0v
I/O Net
M
O
D
B
U
S
C
O
N
N
E
C
T
O
R
G
r
o
u
n
d
L
e
a
d
A
L
e
a
d
B
RS-485
Terminator
Switch
UP (Not Terminated)
DOWN (Terminated)
1
4
23
Termination
is set using
switch 4 (SM1)
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.
Figure 4-8 - RLDS and Gateway Board Wiring
Figure 4-9 - RS485 Connector - RLDS
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.
E2, Einstein, and REFLECS Controllers (The RLDS Gateway Board) Connecting Communication Devices • 17
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