Copeland C Series User manual

User Guide
CRLDS-1000
CRLDS-CO2
C-Series Refrigerant
Leak Detection System (CRLDS)

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Contents
1. Introduction .................................................................................................................... 6
2. Specifications................................................................................................................. 7
2.1 Technical Specifications ................................................................................................................................................................7
2.2 Mechanical Specification ..............................................................................................................................................................7
3. Dimensions ..................................................................................................................... 8
4. Installation....................................................................................................................... 9
4.1 General Information.........................................................................................................................................................................9
4.2 Installation Tips .................................................................................................................................................................................9
4.2.1 Sensor Height .....................................................................................................................................................................9
4.2.2 Equipment Rooms .............................................................................................................................................................10
4.2.3 Cold Rooms .........................................................................................................................................................................10
4.2.4 Chillers..................................................................................................................................................................................10
4.2.5 Air Conditioning - Direct VRF/VRV Systems ................................................................................................................10
4.3 Installation Instructions ..................................................................................................................................................................11
5. Operation......................................................................................................................... 13
5.1 Power On..............................................................................................................................................................................................13
5.2 Device Operating States.................................................................................................................................................................13
5.3 Device Setup Using Rotary Switch.............................................................................................................................................14
5.4 Analog Output....................................................................................................................................................................................19
5.5 Alarm Management .........................................................................................................................................................................20
5.6 Magnetic Key for Configuration ..................................................................................................................................................21
5.6.1 Bluetooth® Activation .......................................................................................................................................................21
5.6.2 Alarm/Warning Management .........................................................................................................................................21

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5.7 Copeland CRLDS Application Features...................................................................................................................................21
5.7.1 Connecting the Device via Bluetooth®.........................................................................................................................22
5.8 Modbus Network ..............................................................................................................................................................................25
5.9 Table of Modbus Variables............................................................................................................................................................26
6. Maintenance .................................................................................................................. 29
6.1 Calibration Procedure.....................................................................................................................................................................29
6.2 Calibration Kit.....................................................................................................................................................................................29
6.3 Calibration via App...........................................................................................................................................................................30
6.4 Calibration via Modbus Communication.................................................................................................................................32
6.4.1 Operation of the Registers for Calibration...................................................................................................................32
6.5 Sensor Replacement Procedure .................................................................................................................................................33
6.6 Cleaning the Device ........................................................................................................................................................................33
7. Additional Information................................................................................................. 34
7.1 Sensor Operating Principle...........................................................................................................................................................34
7.1.1 Semiconductor Sensors ...................................................................................................................................................34
7.1.2 Electrochemical Sensors..................................................................................................................................................34
7.1.3 Pre-Calibrated Sensors and Devices.............................................................................................................................34
7.2 Gas Detected ......................................................................................................................................................................................35
7.3 Device Disposal.................................................................................................................................................................................36
7.3.1 Disposal of Electrical and Electronic Equipment.......................................................................................................36
7.3.2 Disposal of the Sensors ....................................................................................................................................................36
7.3.3 Conformity to Standards..................................................................................................................................................36
8. Ordering Information ................................................................................................... 37
8.1 CRLDS-1000 and CRLDS-CO2 Gas Detector Part Numbers.............................................................................................37

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Safety Icon Explanation
DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION used with the safety alert symbol, indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury.
NOTICE is used to address practices not related to personal injury.
FLAMMABLE Fire hazard! Sparking in a potentially explosive atmosphere!
Explosion hazard!
PLEASE READ BEFORE USING THIS MANUAL
• This manual is part of the product and should be kept near the instrument for easy and quick reference.
• The instrument shall not be used for purposes different from those described hereunder.
It cannot be used as a safety device.
• Check the application limits before proceeding.
• Copeland reserves the right to change the composition of its products, even without notice, ensuring the same and
unchanged functionality.
Instructions Pertaining to Safety Hazard
PLEASE READ BEFORE USING THIS MANUAL
• Verify that the supply voltage is correct before connecting the instrument.
• Do not expose the gateway to water or moisture: use the devices only within the operating limits avoiding sudden
temperature changes with high atmospheric humidity to prevent formation of condensation.
• Disconnect all electrical connections before any kind of maintenance.
• Fit the transmitter where it is accessible by the end user for troubleshooting and replacement. The instrument must
not be opened.
• In case of failure or faulty operation send the instrument back to the distributor or to Copeland with a detailed
description of the fault.

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1. Introduction
CRLDS-1000 and CRLDS-CO2 Gas Detectors are used to monitor indoor air for any refrigerant leaks. The devices can be
used for refrigeration applications (cold rooms, freezer rooms, machinery rooms). The series detectors are available in the
following configurations:
• Built-in version
• Remote version
These detectors are calibrated in various refrigerants available on the market. The sensitive elements are constructed
using semiconductor (SC) technology and infrared (IR) technology. The CRLDS-1000 and CRLDS-CO2 Gas Detectors
can be used in stand-alone applications or connected in Copeland Controllers. Communication with controllers uses an
analog output, relays, or an RS485 Modbus serial connection. When a refrigerant leakage exceeding a programmable
concentration threshold is detected, an alarm or warning status is activated, depending on the level of concentration set,
and the CRLDS responds as follows:
• The combination of LEDs that are on changes
• A dedicated internal relay (SPDT) is activated
• The Analog output is controlled (in proportion to the detected concentration)
• The change in status is signaled via the RS485 Modbus® output
Furthermore, the Copeland CRLDS Application, available in both App Store and Play Store, can be used to access the
device. The CRLDS-1000 and CRLDS-CO2 detectors enable compliance with refrigeration safety standards (for example,
ASHRAE 15) through alarms to alert personnel in the event of a refrigerant leakage.
Semiconductor sensors detect the gas they have been calibrated for, but are also sensitive to other types of gases,
solvents, alcohol, or substances containing ammonia, such as cleaning products, present in the environment.
This, in certain areas and applications, can lead to false alarms when the substances described above are present.
Nonetheless, although they do not only detect the specific gas, but they also still give a reliable indication of the
concentration of the gas they have been calibrated for.
This device is neither certified nor approved for operation in oxygen-enriched atmospheres.
Non-compliance can lead to EXPLOSION.
This device has not been designed to guarantee intrinsic safety when used in areas classified as
hazardous (“Directive 2014/34/EU ATEX” and “NFPA 70, Hazardous Location”). For operator safety, DO NOT use it in
hazardous locations (classified as such).
If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment
may be impaired.

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2. Specifications
2.1 Technical Specifications
Technical specifications Semiconductor version Electrochemical version Infrared version
Power supply voltage** 24VDC/AC +/- 20%, 5W , 50/60Hz
(Recommended P/N 250-2541 DIN rail mount 24VDC @ 15W power supply)
User Interface App with Bluetooth®
Analog Output 4-20mA / 0-10V / 1-5V / 2-10V selected via software
Serial Communication Modbus® RS485 isolated server
Digital Output 1 SPDT Alarm - relay 1 A/24 VDC/AC, resistive load
Digital Output 2 SPDT Warning/FAULT - relay 1 A/24 VDC/AC, resistive load
Relay Failsafe Yes; Selectable
Selectable Delay 0-20 min; 1-minute steps, selectable via Modbus register/app
Hysteresis ± 10% of the threshold value
IP Protection IP67
Typical Operating Range 0-1000 ppm
0-4000 ppm 0-100 ppm 0-10000 ppm
Sensing Element Pre-calibrated (also available as a spare part) with certificate
Remote Cable Length 5 meters
Storage Ttemperature -40°F to +122°F (-40 °C to +50 °C)
Storage Humidity 5-90% relative humidity, non-condensing
Storage Position Any
Operating Temperature -40°F to +122°F (-40 °C to +50 °C)
Operating Humidity 5-90% relative humidity, non-condensing
Maximum Installation Altitude 2000 meters (6561 ft.)
Operating Position Intended for vertical mounting with the sensor at the bottom
Precision*<-10%/+15% ±5% ±5%
Start-up Time*5 minutes 5 minutes 2 minutes
Working Life*5 years 2 years 7 years
Calibration Procedure Requirements 12 months 12 months Not required
*Reference conditions at 77°F (25°C) 50% RH atmospheric pressure 101.3 kPa
** The device is intended to be supplied from an isolated Limited Energy Source per UL61010-1, 3rd edition cl. 9.4 or
Limited Power Source per UL60950-1 or Class 2 per NEC
2.2 Mechanical Specification
Dimensions
Enclosure size (W×H×D) (approx.)
Built-in: 233x175x97 mm (9 x 7 x 4 in)
Remote: 233x175x97 mm (9 x 7 x 4 in)
Product weight + casing (approx.)
Built-in: 590 g
Remote: 850 g

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3. Dimensions
Built-in Version
Remote Version

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4. Installation
The gas detector must only be installed by qualified personnel.
It is recommended to read the manual completely in order to use the product correctly.
4.1 General Information
The performance and overall effectiveness of the system strictly depend on the characteristics of the place where the
gas detector is installed. It is therefore necessary to scrupulously comply with and carefully analyze every detail of the
installation process, including (but not limited to) the following aspects:
• Local, state and national regulations and standards governing the installation of gas monitoring equipment
• Electrical standards governing the laying and connection of power and signal cables to gas monitoring equipment
• All possible environmental conditions that the devices will be exposed to
• The physical characteristics of the gas to be detected (in particular, its specific weight)
• The characteristics of the application (for example, possible leakages, movement of air, areas where gas may stagnate and collect,
high pressure areas, etc.)
• The accessibility needed for routine maintenance and repairs
• The types of equipment and accessories needed to manage the system
• Any limiting factors or regulations that may affect system performance or installations
The installation surfaces must not be exposed to continuous vibrations so as to prevent damage
to the connections and electronic devices.
4.2 Installation Tips
THERE IS NO GENERAL RULE for establishing the appropriate number of sensors and their location for each
application. Therefore, the guidelines described below are intended as support for installers, and not as rules in their
own right. Copeland accepts no liability for the installation of the gas detectors.
4.2.1 Sensor Height
Gas Type Mounting Height
HFC / HFO / C3H8Propane (R290) 20 cm (7.87 in) above the floor
CO2Carbon Dioxide (R744) 20 cm (7.87 in) above the floor

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4.2.2 Equipment Rooms
In equipment rooms, the gas detectors can be installed as follows:
• Position the gas detectors near areas with a high concentration of refrigerant, such as compressors, cylinders, storage tanks,
pipes and conduits. Avoid vibrating surfaces.
• Position the gas detectors near mechanical parts such as pressure reducers, valves, flanges, joints (brazed or mechanical) and
pipes. In particular, above or below these in relation to the type of gas (see below).
• Position the gas detectors around the perimeter of the room, so as to completely surround the equipment.
• Position the gas detectors in all enclosed areas (stairwells, pits, enclosed corners, etc.) where pockets of stagnant gas may form.
• Position the gas detectors near ventilation air flows, both natural and mechanical (if present).
• Do not place the gas detectors too close to areas with high-pressure gas, to allow this to spread in the space around the gas de-
tector. Otherwise the device may not detect the refrigerant leak if the flow of gas is too fast.
4.2.3 Cold Rooms
In cold rooms, position the gas detectors near the return air flow from the evaporator, ideally on a side wall, but not
directly in front of the evaporator.
Where there are several evaporators, it may be possible to use one gas detector for every two evaporators if their
positioning allows.
Finally, position the gas detectors near mechanical parts or joints such as valves, flanges, and pipes, avoiding areas with
high-pressure gas.
4.2.4 Chillers
Measuring leaks on outdoor chillers is generally more difficult, given the highly variable air flow.
Generally, it is recommended to install the gas detectors near the compressor, as this is the place where refrigerant
leaks are most likely to occur. In particular, check if it is possible to install the gas detector inside the closed unit near the
compressor, where gas is more likely to stagnate. However, avoid vibrating surfaces or surfaces that are difficult to access
for maintenance.
It is also recommended to install gas detectors along the ventilation system, especially in the event of low or variable air
flow speeds.
4.2.5 Air Conditioning - Direct VRF/VRV Systems
In air-conditioned buildings, it is recommended to install at least one gas detector in each room, identifying the areas
of greatest risk, such as air flows from ventilation systems and heating systems such as radiators. In these spaces, the
refrigerant gas is usually denser than air consequently, the gas detectors should be installed close to the floor.
Also consider installing the gas detector in ceilings or false ceilings, if not adequately sealed. Do not install the gas
detectors underneath mirrors/washbasins and inside bathrooms.
Do not install the gas detectors near sources of steam.

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4.3 Installation Instructions
Once the optimal position to install the sensor has been chosen, it is recommended to install the sensor (identifiable on
the device by the black sensor housing) in a vertical position, with the sensitive element (black part) facing downwards.
The sensor can now be mounted on the wall, as follows:
1. Drill the holes in the wall using the measures on the bottom side of the detector (shown in the picture).
2. Fix the device using four screws, chosen according to the type
of installation and the type of wall, maximum diameter 4 mm,
minimum length 15 mm and torque 2.5 Nm.
3. Fix the remote sensor using one screw, chosen according to the
type of installation and the type of wall, maximum diameter 4 mm,
minimum length 15 mm and torque 2.5 Nm.
4. Open the cover of the device, fit the cable glands and make the
required electrical connections. The plug-in terminals can be
removed from the device to facilitate wiring.
5. Power ON the device and complete the settings using the rotary
switch, as described in the following paragraphs, or using the app,
as described below or through the Modbus connection.
6. Use the cable glands provided to pass through and connect the
cables to the terminals, as shown in the figure below and in the
Connection Table on page 12. The terminals can be removed to simplify wiring.
7. Close the cover.
8. Cord range for M16 cable gland 5 - 10 mm, for M22 cable gland 10 - 14 mm.
9. Use UL listed approved cable, min. 122°F (50°C), suitable for electrical rating in application.
10.Tighten the cable glands with a torque of 2.5 Nm.
11.Close the cover.

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Before commencing electrical installation and wiring, carefully read the following notes:
• Power must be supplied by a safety isolation transformer (Class 2) or DC power supply with no
Earth Ground connection on the low voltage side (24VAC or 24 VDC)
• The cable for the relays must be sized and fitted with fuses based on the rated voltages, currents,
and environmental conditions.
• If stranded wires are used, it is recommended to use an end terminal.
• To comply with RFI immunity regulations, the Modbus communication cable shield at the super-
visor controller (E2, E3, Site Supervisor) end of network must be connected to Earth Ground (for
example, to the earthed chassis, earth bar, etc.)
• Complete all wiring before powering on.
• Secure the detector cover with the four screws.
• Power the device on and set the parameters if the settings were not
previously made using the rotary switch.
J1
+ Analog output
G Analog output reference
J2
Sh Shielded RS485 cable
G0 GND for RS485
A Tx + / Rx + for RS485
B Tx- / Rx- for RS485
J3
+24 Vac/DC For Vac power supply, connect the second
transformer wire
+24 Vac/DC
For Vdc power supply, connect one of the two
power wires, the device automatically recognizes
whether this is + or GND. For AC power supply,
connect one of the two transformer wires.
J4
1A NO contact for the warning/fault relay
2A Common for the warning/fault relay
3A NC contact for the warning/fault relay
J5
1B NO contact for the alarm relay
2B Common for the alarm relay
3B NC contact for the alarm relay
J6
+ NC contact for the alarm relay
G Service voltage reference
J7 / Built-in version sensor connector
J8 / Remote version sensor connector (connection not
to be used for built-in products)
All external circuits connected to device shall be
double or reinforced isolated from mains meet SELV
and Limited energy requirements according to clause
9.4 of UL61010-1 3rd edition.
Electrical Connection
Connection Table

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5. Operation
5.1 Power On
When power is connected, the device begins the start-up cycle, divided into two phases: Start -up and Warm-up.
The start-up sequence lasts around 20 seconds, during which the main functions of the gas detector are initialized and
verified. In this phase, the LEDs on the front panel are activated in sequence, and the device cannot yet be used.
At the end of the start-up sequence, the warm-up phase commences, during which the sensor output signal is adjusted
and stabilized. In this phase, the device can be used to detect gas and installation can be completed via the rotary switch,
app or controller; nonetheless, the measurement is less reliable, and calibration is not possible. During the warm-up
phase, the green LED flashes around twice every second. The duration of the warm-up phase depends on the sensor
technology used.
• Semiconductor = 5 min
• Infrared = 2 min
The duration of the warm-up phase may also vary according to environmental conditions. In this phase it is important not
to cause sudden changes in gas concentration, so as to avoid compromising correct measurement by the sensor.
The sensors may take longer to warm up than specified; in these cases, do not take any action, wait for the device to
stabilize. The time needed for complete stabilization of the device may vary from 2 (two) hours (minimum time) to 24
hours (recommended time).
5.2 Device Operating States
The CRLDS-1000 and CRLDS-CO2 Gas Detectors provide visual indications of their current operating status, in addition to
the relay outputs. Visual indication of device operating status is provided by three LEDs (green/red/orange). Device status
and the corresponding outputs are displayed in the following table:
Status LED Warning Fault/Relay Alarm Relay
Warm-up OFF OFF
Normal OFF OFF
Bluetooth® OFF OFF
Serial Connected Internal LED W8 on steady --- ---
Warning Delay OFF OFF
Alarm Delay (RWF*= 0) ON OFF
Alarm Delay (RWF*= 1) OFF OFF
Warning (RWF*= 0) ON OFF
Warning (RWF*= 1) OFF OFF
Alarm (RWF*= 0) ON ON
Alarm (RWF*= 1) OFF OFF
Fault (RWF*= 0) ON ON
Red and yellow on steady, Green LED OFF
Fault (RWF*= 1) ON OFF
Red and yellow on steady, Green LED OFF
*RWF = Relay WF Modbus Register

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5.3 Device Setup Using Rotary Switch
The Rotary Switch (R1) is located on the electronic board of the device.
OFF
LOW INTENSITY ON
HIGH INTENSITY ON
LOW INTENSITY BLINK
1 2 3 4 5 2-5 6
The basic configuration can be performed using the rotary switch, following the instructions described below. To
complete the configuration, a digital multimeter is required, with the test leads connected to connector J6. In this way,
the tester will show a voltage between 0 and 10 Volts, indicating the value selected by the rotary switch. The meaning of
the voltage value displayed changes depending on the selected function the table below shows the meaning of each
voltage for each function.
Setting mode is activated by pressing and holding the rotary switch for 5 seconds. The LED that is ON acts as the menu
point, indicating which parameters will be set (all the other LEDs are OFF). Turn the switch to select the parameter to be
set. Reading the table, the voltage read with a voltmeter connected to the service terminal indicates the chosen setting.
Pressing the rotary switch for 2 seconds accesses the selected parameter. The corresponding LED flashes. Turning the
rotary switch changes the parameter setting.
After having made the setting, pressing the rotary switch for 5 seconds saves the new value. Turning the rotary switch
again moves to the next parameter.
After two minutes of inactivity or pressing the rotary switch for 10 seconds, the detector returns to normal operating
mode.

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Description of the rotary switch LEDs
The table below shows the value of the selected parameter and the corresponding voltage value. Each LED corresponds
to a different parameter. The default parameter values are saved to permanent memory.
LED W1 Not used
LED W2
Warning level
The operator can set the warning threshold.
See the table below for the voltage value corresponding to the selected setting.
LED W3
Alarm level
The operator can set the alarm threshold.
See the table below for the voltage value corresponding to the selected setting.
LED W4
Modbus address
The operator can set the Modbus address.
To set the values with greater precision, use the Modbus serial connection or the app.
See the table below for the voltage value corresponding to the selected setting.
LED W5
Alarm delay
The operator can select the delay time for activation of the LED and the alarm relay after the alarm threshold has been
exceeded.
See the table below for the voltage value corresponding to the selected setting.
LED W6
Type of Analog output voltage.
The operator can select the type of Analog output.
See the table below for the voltage value corresponding to the selected setting.
LED W7
Alarm/warning reset function mode
This parameter is used to select the warning and alarm reset modes.
0= manual reset (latch) / 1= automatic reset
LED W8
Modbus configuration
The operator can choose the desired Modbus configuration from the options available.
See the table below for the voltage value corresponding to the selected setting.
Possible configurations - Alarm/warning reset function mode (W7)
W=0
A=0
Manual reset
Warning
Manual reset
Alarm
W=1
A=0
Automatic reset
Warning
Manual reset
Alarm
W=0
A=1
Manual reset
Warning
Automatic reset
Alarm
W=1
A=1
Automatic reset
Warning
Automatic reset
Alarm

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J6 Voltage Value Conversion Table / Selected Function
Service
wheel
LED
W2 / W3
W4 W5 W6 W7 W8
Full scale
1000
Full scale
4000
Full scale
10000
Full scale
100
Voltage
[V] [ppm] [ppm] [ppm] [ppm] [--] [m] [--] [--] [--]
000000 0
0.1 100 100 100 1 1
0.2 200 200 200 2 2
0.3 300 300 300 3 3
0.4 400 400 400 4 4
0.5 500 500 500 5 5 5
0.6 600 600 600 6 6
0.7 700 700 700 7 7
0.8 800 800 800 8 8
0.9 900 900 900 9 9
1 1000 1000 1000 10 10 10 9600 8N1
1.1 1100 1100 11 11
1.2 1200 1200 12 12
1.3 1300 1300 13 13
1.4 1400 1400 14 14
1.5 1500 1500 15 15 15
1.6 1600 1600 16 16
1.7 1700 1700 17 17
1.8 1800 1800 18 18
1.9 1900 1900 19 19
2 2000 2000 20 20 20 4-20 mA W=0 A=0 9600 8N2
2.1 2100 2100 21
2.2 2200 2200 22
2.3 2300 2300 23
2.4 2400 2400 24
2.5 2500 2500 25 25
2.6 2600 2600 26
2.7 2700 2700 27
2.8 2800 2800 28
2.9 2900 2900 29

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Service
wheel
LED
W2 / W3
W4 W5 W6 W7 W8
Full scale
1000
Full scale
4000
Full scale
10000
Full scale
100
Voltage
[V] [ppm] [ppm] [ppm] [ppm] [--] [m] [--] [--] [--]
3 3000 3000 30 30 19200 8N1
3.1 3100 3100 31
3.2 3200 3200 32
3.3 3300 3300 33
3.4 3400 3400 34
3.5 3500 3500 35 35
3.6 3600 3600 36
3.7 3700 3700 37
3.8 3800 3800 38
3.9 3900 3900 39
4 4000 4000 40 40 19200 8N2
4.1 4100 41
4.2 4200 42
4.3 4300 43
4.4 4400 44
4.5 4500 45 45
4.6 4600 46
4.7 4700 47
4.8 4800 48
4.9 4900 49
5 5000 50 50 1-5 V W=1 A=0
5.1 5100 51
5.2 5200 52
5.3 5300 53
5.4 5400 54
5.5 5500 55 55
5.6 5600 56
5.7 5700 57
5.8 5800 58
5.9 5900 59

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Service
wheel
LED
W2 / W3
W4 W5 W6 W7 W8
Full scale
1000
Full scale
4000
Full scale
10000
Full scale
100
Voltage
[V] [ppm] [ppm] [ppm] [ppm] [--] [m] [--] [--] [--]
6 6000 60 60 9600 8E1
6.1 6100 61
6.2 6200 62
6.3 6300 63
6.4 6400 64
6.5 6500 65 65
6.6 6600 66
6.7 6700 67
6.8 6800 68
6.9 6900 69
7 7000 70 70 19200 8E1
7.1 7100 71
7.2 7200 72
7.3 7300 73
7.4 7400 74
7.5 7500 75 75
7.6 7600 76
7.7 7700 77
7.8 7800 78
7.9 7900 79
8 8000 80 80 2-10 V W=0 A=1 9600 8O1
8.1 8100 81
8.2 8200 82
8.3 8300 83
8.4 8400 84
8.5 8500 85 85
8.6 8600 86
8.7 8700 87
8.8 8800 88
8.9 8900 89

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Service
wheel
LED
W2 / W3
W4 W5 W6 W7 W8
Full scale
1000
Full scale
4000
Full scale
10000
Full scale
100
Voltage
[V] [ppm] [ppm] [ppm] [ppm] [--] [m] [--] [--] [--]
6 6000 60 60 9600 8E1
6.1 6100 61
6.2 6200 62
6.3 6300 63
6.4 6400 64
6.5 6500 65 65
6.6 6600 66
6.7 6700 67
6.8 6800 68
6.9 6900 69
7 7000 70 70 19200 8E1
7.1 7100 71
7.2 7200 72
7.3 7300 73
7.4 7400 74
7.5 7500 75 75
7.6 7600 76
7.7 7700 77
7.8 7800 78
7.9 7900 79
8 8000 80 80 2-10 V W=0 A=1 9600 8O1
8.1 8100 81
8.2 8200 82
8.3 8300 83
8.4 8400 84
8.5 8500 85 85
8.6 8600 86
8.7 8700 87
8.8 8800 88
8.9 8900 89
Service
wheel
LED
W2 / W3
W4 W5 W6 W7 W8
Full scale
1000
Full scale
4000
Full scale
10000
Full scale
100
Voltage
[V] [ppm] [ppm] [ppm] [ppm] [--] [m] [--] [--] [--]
9 9000 90 90 19200 8O1
9.1 9100 91
9.2 9200 92
9.3 9300 93
9.4 9400 94
9.5 9500 95 95
9.6 9600 96
9.7 9700 97
9.8 9800 98
9.9 9900 99
10 10000 100 100 0-10 V W=1 A=1
5.4 Analog Output
The CRLDS-1000 and CRLDS-CO2 detectors features a single configurable Analog output. During normal operation, the
device’s Analog output signal is proportional to the gas concentration measured, and can be selected from the following
options:
• 1 to 5 V
• 2 to 10 V
• 0 to 10 V
• 4 to 20 mA (default)
The CRLDS-1000 and CRLDS-CO2 detectors uses different voltage/current values to indicate different operating modes.
In normal operation, the gas concentration is indicated by the Analog output signal level. The relationship between
output signal level and gas concentration is shown below:
Gas Concentration 1-5 V 2-10 V 0-10 V 4-20 mA
Underrange 2 mA
0% 1 V 2 V 0 V 4 mA
50% 3 V 6 V 5 V 12 mA
100% 5 V 10 V 10 V 20 mA
Overrange 22 mA

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5.5 Alarm Management
The alarms are activated when the set thresholds are exceeded. The alarm threshold value must always be greater than
the warning value. The alarm and warning thresholds must be less than or equal to the full-scale range and must be
greater than or equal to the allowed limit. The alarms are activated when the set thresholds are exceeded.
Alarm Setpoints
Sensor, Gas and Range Minimum Value Alarm Default Warning Default Maximum Value Unit of
Measure
SC, HFC/HFO 0-1000 ppm 150 500 150 800 ppm
SC, R290, 0-4000 ppm 400 800 400 3000 ppm
IR, CO2, 0-10000 ppm 1000 5000 1500 8000 ppm
12345
300 PreAlarmflag = 0 300 PreAlarmflag = 0 300 PreAlarmflag = 0 300 PreAlarmflag = 1 300 PreAlarmflag = 1
307 PreWarningFlag = 0 307 PreWarningFlag = 1 307 PreWarningFlag = 1 307 PreWarningFlag = 1 307 PreWarningFlag = 1
308 WarningFlag = 0 308 WarningFlag = 0 308 WarningFlag = 1 308 WarningFlag = 1 308 WarningFlag = 1
309 AlarmFlag = 0 309 AlarmFlag = 0 309 AlarmFlag = 0 309 AlarmFlag = 0 309 AlarmFlag = 1
Yellow LED OFF Yellow LED flashing Yellow LED ON Yellow LED ON Yellow LED ON
Red LED OFF Red LED OFF Red LED OFF Red LED flashing Red LED ON
Warning relay OFF Warning relay OFF Warning relay ON Warning relay ON Warning relay ON
Alarm relay OFF Alarm relay OFF Alarm relay OFF Alarm relay OFF Alarm relay ON