Macurco MA-CX-12 User Manual

Macurco™ CX-6, CX-12

Carbon Monoxide & Nitrogen Dioxide Combination Detector, Controller and Transducer User Instructions

IMPORTANT: Keep these user instructions for reference.

Macurco CX-xx Manual (Rev-1.0) Eng

1 General Safety Information ...................................................................................................................................... 4

1.1 General Description .......................................................................................................................................... 4

1.2 List of warnings ................................................................................................................................................. 4

2 Use Instructions and Limitations .............................................................................................................................. 5

2.1 Use For .............................................................................................................................................................. 5

2.2 Do NOT use for ................................................................................................................................................. 6

2.3 Features ............................................................................................................................................................ 6

2.4 Specifications .................................................................................................................................................... 6

2.4.1 6-Series Low Voltage ................................................................................................................................ 7

2.4.2 12-Series Line Voltage .............................................................................................................................. 7

3 Installation and Operating Instructions .................................................................................................................... 7

3.1 Location ............................................................................................................................................................ 7

3.2 Installation ........................................................................................................................................................ 7

3.2.1 6-Series Low Voltage ................................................................................................................................ 7

3.2.2 12-Series Line Voltage ............................................................................................................................ 13

3.3 Terminal Connection ...................................................................................................................................... 18

3.3.1 6-Series Low Voltage .............................................................................................................................. 18

3.3.2 12-Series Line Voltage ............................................................................................................................ 19

4 Operations .............................................................................................................................................................. 20

4.1 Power up......................................................................................................................................................... 20

4.2 Display turned “On” ....................................................................................................................................... 20

4.3 Display turned “Off” ....................................................................................................................................... 21

4.4 4-20mA Loop .................................................................................................................................................. 22

4.5 Configuration “CON” ...................................................................................................................................... 22

4.5.1 Default – Factory Settings ...................................................................................................................... 23

4.5.2 Select Default Configuration – “dEF” ..................................................................................................... 23

4.5.3 Select Power-Up Test Setting – “PUt” .................................................................................................... 23

4.5.4 Select Display Configuration – “dSP” ...................................................................................................... 24

4.5.5 Select Buzzer Configuration – “bUZ” ...................................................................................................... 24

4.5.6 Select Alarm Relay Setting for CO – “ArS.C” ........................................................................................... 24

4.5.7 Select Alarm Relay Setting for NO2 – “ArS.n” ........................................................................................ 25

4.5.8 Select Alarm Relay Configuration – “Arc” .............................................................................................. 25

4.5.9 Select Fan Relay Setting for CO – “FrS.C” ............................................................................................... 25

4.5.10 Select Fan Relay Setting for NO2 – “FrS.n” ............................................................................................. 26

4.5.11 Select Fan Relay Delay Setting – “Frd” ................................................................................................... 26

4.5.12 Select Fan Relay Minimum Runtime Setting – “Frr”............................................................................... 26

4.5.13 Select Fan Relay Latching Setting – “FrL” ............................................................................................... 27

4.5.14 Select Trouble Fan Setting – “tFS” .......................................................................................................... 27

4.5.15 Select 4-20mA Output Setting – “420” ................................................................................................... 27

4.5.16 Select 4-20mA Mode – “420.n” .............................................................................................................. 28

4.5.17 Select Calibration Period for CO Sensor – “CAL.C” ................................................................................. 28

4.5.18 Select Calibration Period for NO

Sensor – “CAL.n” ............................................................................... 29

5 Troubleshooting ..................................................................................................................................................... 29

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Macurco CX-xx Manual (Rev-1.0) Eng

5.1 On-Board Diagnostics ..................................................................................................................................... 29

5.1.1 4-20mA troubleshooting ........................................................................................................................ 29

5.1.2 Trouble Codes ......................................................................................................................................... 29

5.2 Sensor Poisons ................................................................................................................................................ 31

5.3 Sensor Expired ................................................................................................................................................ 31

6 Maintenance ........................................................................................................................................................... 32

6.1 Sensor Life Reset ............................................................................................................................................ 32

6.2 Cleaning .......................................................................................................................................................... 33

7 Testing .................................................................................................................................................................... 33

7.1 Testing ............................................................................................................................................................ 33

7.1.1 Operation Test ........................................................................................................................................ 33

7.1.2 Manual Operation Test ........................................................................................................................... 34

7.2 Calibration and Test Kits ................................................................................................................................. 34

7.3 Gas Testing ..................................................................................................................................................... 36

7.3.1 Testing the Fan Relay .............................................................................................................................. 36

7.3.2 Testing the Alarm Relay .......................................................................................................................... 37

7.3.3 Testing the 4-20mA loop ........................................................................................................................ 37

7.3.4 Aerosol Carbon Monoxide Test (Carbon Monoxide only) ...................................................................... 37

7.4 Field Calibration Procedure ............................................................................................................................ 38

7.4.1 Zero Calibration for CO Sensor ............................................................................................................... 38

7.4.2 Zero Calibration for NO

Sensor ............................................................................................................. 38

7.4.3 Span Calibration for CO Sensor .............................................................................................................. 39

7.4.4 Span Calibration for NO

Sensor ............................................................................................................. 39

8 Appendix A – Table of Figures ................................................................................................................................ 41

9 Appendix B – Menu Structure ................................................................................................................................ 42

9.1 Main Menu ..................................................................................................................................................... 42

9.2 Auto Test Menu “bUZ” ................................................................................................................................... 43

9.3 Configuration Menu “CON” ............................................................................................................................ 44

9.4 Select Test Menu “tst” .................................................................................................................................... 51

9.5 CAL Menu ....................................................................................................................................................... 52

9.6 SEn Menu ........................................................................................................................................................ 54

10 Macurco Gas Detection Product limited warranty ............................................................................................. 55

Technical Support Contact Information ...................................................................................................................... 55

General Contact Information ...................................................................................................................................... 55

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WARNING

Each person using this equipment must read and understand the information in this

performance.

Use only for monitoring the gas which the sensor and monitor is designed to detect.

Support at 1-844-325-3050.

This equipment may not function effectively below 0°F or above 125°F (-18°C or above

product performance.

This detector helps monitor for the presence and concentration level of a certain

manual, or contact Technical Support at 1-844-325-3050.

High voltage terminals (120/240 VAC) are located within this detector, presenting a hazard to service technicians. Only qualified technicians should open the detector case

Macurco CX-xx Manual (Rev-1.0) Eng

1 General Safety Information

The following instructions are intended to serve as a guideline for the use of the Macurco CX-6 and CX-12 Carbon Monoxide & Nitrogen Dioxide Combination Detector. This manual will refer to these devices as CX-xx unless content is specific to a model. This manual is not to be considered all-inclusive, nor is it intended to replace the policy and procedures for your facility. If you have any doubts about the applicability of the equipment to your situation, consult an industrial hygienist or call Technical Support at 1-844-325-3050.

1.1 General Description

The Macurco CX-xx is a commercial style combination Carbon Monoxide and Nitrogen Dioxide Gas Detector/Transducer. It is an electronic detection system used to measure the concentration of CO and NO provide feedback and automatic exhaust fan control to help reduce CO and NO maintenance facilities or other commercial applications.

It is available in both a low voltage (CX-6) and line voltage (CX-12) option. The CX-xx is a low-level meter capable of displaying in the range 0-200 ppm (parts per million) of Carbon Monoxide and 0-20 ppm of Nitrogen Dioxide. The CX-xx has selectable 4-20 mA output, buzzer and digital display options. The CX-xx is factory calibrated and 100% tested for proper operation but can also be calibrated in the field.

The CX-xx is intended to be mounted on a 4 x 4 electrical box. It can operate in a stand-alone application or can be connected to a building automation system, UL listed Control Panel, or other control device that accepts 4-20mA analog input. The CX-xx is compatible with the Macurco DVP Control Panel.

concentrations in parking garages,

and

1.2 List of warnings

user manual before use. Use of this equipment by untrained or unqualified persons or use that is not in accordance with this user manual, may adversely affect product

Failure to do so may result in exposures to gases not detectable and cause serious injury or death. For proper use, see supervisor or user manual, or contact Technical

52°C). Using the detector outside of this temperature range may adversely affect

specified airborne gas. Misuse may produce an inaccurate reading, which means that higher levels of the gas being monitored may be present and could result in overexposure and cause serious injury or death. For proper use, see supervisor or User

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and service the internal circuits. Ensure power is de-energized from the detector relays prior to servicing the unit. Failure to do so may result in electrical shock.

Do not disassemble unit or attempt to repair or modify any component of this

components may impair product performance.

Using a certified gas with a concentration other than the one listed for this detector

contact Technical Support at 1-844-325-3050.

The following steps must be performed when conducting a calibration verification test

death.

WARNING

Each person using this equipment must read and understand the information in this

performance.

WARNING

Use only for monitoring the gas which the sensor and monitor is designed to detect.

Support at 1-844-325-3050.

Macurco CX-xx Manual (Rev-1.0) Eng

instrument. This instrument contains no user serviceable parts, and substitution of

when conducting a calibration verification test (bump test) will produce inaccurate readings. This means that higher levels of the gas being monitored may be present and could result in overexposure. For proper use, see supervisor or User manual, or

(bump test) to ensure proper performance of the monitor. Failure to do so may adversely affect product performance.

• When performing a calibration verification test (bump test) only use certified

calibration gas at the required concentration level.

• Do not test with expired calibration gas.

• Do not cover or obstruct display or visual alarm cover.

• Ensure sensor inlets are unobstructed and are free of debris

Failure to follow instructions outlined in this user manual can result in sickness or

2 Use Instructions and Limitations

user manual before use. Use of this equipment by untrained or unqualified persons or use that is not in accordance with this user manual, may adversely affect product

2.1 Use For

The CX-xx provides CO and NO2 detection and automatic exhaust fan control for automotive maintenance facilities, enclosed parking garages, utility rooms, warehouses and other commercial applications where the potential for Carbon Monoxide and/or Nitrogen Dioxide gas exists. The CX-xx meets the requirements of the Uniform Building Code for enclosed garages and meets OSHA standards for CO and NO with the Macurco DVP-120 Detection and Ventilation Control Panel, other 12 VAC or 24 VDC fire/security panels or building automation systems.

exposure. The CX-xx can be used stand alone,

Failure to do so may result in exposures to gases not detectable and cause serious

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injury or death. For proper use, see supervisor or user manual, or contact Technical

WARNING

This equipment may not function effectively below 0°F or above 125°F (-18°C or above

product performance.

Macurco CX-xx Manual (Rev-1.0) Eng

2.2 Do NOT use for

The CX-xx is not intended for use in hazardous locations or industrial applications such as refineries, chemical plants, etc. Do not mount the CX-xx where the normal ambient temperature is below 0°F or exceeds 125°F (-18°C or above 52°C). The CX-xx mounts on a type 4S electrical box supplied by the contractor. Do not install the CX-xx inside another box unless it has good air flow through it.

52°C). Using the detector outside of this temperature range may adversely affect

2.3 Features

• ETL LISTED Certified to CSA C22.2 No 61010-1, Conforms to UL Std. 61010-1

• Low-level meter capable of displaying from 0-200 ppm of CO and 0-20 ppm of NO

• The CX-xx meets the Uniform Building Code for enclosed garages and meets OSHA standards for CO and NO

exposure

• Selectable fan and alarm relay activation

• 5 A SPDT fan relay controls starters of exhaust fans

• 0.5 A N.O. or N.C. alarm relay connects to warning devices or control panels

• 4-20 mA Current Loop

• CX-xx mounts on a standard 4x4 electrical box and becomes cover for the box

• Supervised system: any internal detector problem will cause the fan & Alarm relay to activate

• Calibration kit is available. One screw allows access for calibration or gas test

2.4 Specifications

• Shipping Weight: 1 pound (0.45 kg)

• Size: 4 1/2 x 4 x 2 1/8 in. (11.4 X 11.4 X 5.3 cm)

• Color: White or Dark gray

• Connections: plugs/terminals

• Mounting box: (not included) 4x4 electric

• Fan relay: 5 A, 240 VAC, pilot duty, SPDT, latching or non-latching

• Fan relay actuation for CO: selectable at dIS (disable), 15, 25, 35 (default), 50 or 100 ppm

• Fan relay actuation for NO

3.0, 3.2, 3.5, 3.7, 4.0, 4.2, 4.5, 4.7, 5.0 ppm

• Fan Delay Settings of 0, 1, 3 (default), 5 and 10 minutes

• Fan Relay Minimum Runtime settings are 0 (default), 3, 5, 10 or 15 minutes

• Fan relay latching or not latching (default) selectable

• Alarm relay: 0.5A 120 V, 60 VA

• Alarm relay actuation: selectable N.O. (default) or N.C.

• Alarm relay settings for CO: dIS, 50, 100, 150, and 200 ppm (default)

• Alarm relay settings for NO

• Current Loop 4-20 mA, selectable to ’bAS’ (default), ‘EnH’, OFF

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: selectable at dIS (disabled) 0.5, 0.7, 1.0, 1.2, 1.5, 1.7, 2.0, 2.2, 2.5 (default), 2.7,

: dIS, 1, 2, 3, 4, 5 (default), 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 ppm

WARNING

This detector helps monitor for the presence and concentration level of a certain

manual, or contact Technical Support at 1-844-325-3050.

WARNING

High voltage terminals (120/240 VAC) are located within this detector, presenting a

prior to servicing the unit. Failure to do so may result in electrical shock.

Macurco CX-xx Manual (Rev-1.0) Eng

• Calibration Period Settings: dis(default), 3, 6, 12 and 24 (months)

• Buzzer: 85 dBA at 10cm settable to On (default) or OFF.

• Digital display: 4-digit LED selectable to On (default) or OFF.

• Operating Environment: 0°F to 125° F (-18

C to 52oC),10 to 90% RH non-condensing

2.4.1 6-Series Low Voltage

• Power: 3 W (max) from 12 to 24 VAC or 12 to 32 VDC

• Current @ 24 VDC: 75 mA in alarm (two relays), 50 mA (fan relay only) and 23 mA standby

2.4.2 12-Series Line Voltage

• Power: 100-240VAC (50 TO 60 HZ)

• Current: 1.0 A MAX

3 Installation and Operating Instructions

3.1 Location

A CX-xx is normally mounted at breathing level, about 5 feet (1.5 meters) above the floor on a wall or column in a central area where air movement is generally good. The unit, on average, can cover about 5,000 sq. ft. (465 sq. meters). The coverage depends on air movement within the room or facility. Extra detectors may be needed near any areas where people work or where the air is stagnant. Do NOT mount the CX-xx where the normal ambient temperature is below 0°F or exceeds 125°F (below -18°C or above 52°C).

hazard to service technicians. Only qualified technicians should open the detector case and service the internal circuits. Ensure power is de-energized from the detector relays

3.2 Installation

3.2.1 6-Series Low Voltage

1. The CX-6 mounts on a 4” square (or 4x4) electrical box supplied by the contractor. Do not mount the CX-6

inside another box, unless it has good air flow through it.

2. Connect the CX-6 to Class 2 listed power supply only. It is suggested to use a separate transformer for

powering the unit or units because of possible interferences from other devices on the same power supply.

3. Connect the CX-6 to the control cables with terminal plugs. When making connections, make sure the power

is off.

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4. There are two terminals for Power: 12 to 24 VAC or 12 to 32 VDC, with no polarity preference.

5. There are two terminals for the dry alarm relay contacts, again with no polarity preference. The alarm relay

can switch up to 0.5 A 120 V, or 60 VA. The alarm relay is activated if gas reaches or exceeds the alarm settings. See section 4.5 Configuration “CON” for details on relay settings.

6. The alarm relay can be configured to normally open (default) (N.O.) or normally closed (N.C.) and will

activate:

a. if either the CO or NO

gas concentration exceeds the alarm set point. It will deactivate once the gas

concentration drops below the alarm set point. Note that setting both “ArS.C” and “ArS.n” to “diS” will disable the alarm relay.

b. during a power up test “PUt”. c. when a trouble condition is present.

7. The dry contact, SPDT fan relay has three terminals. The common (COM.), normally open (N.O.) and the

normally closed (N.C.) contact. The fan relay can switch up to 5.0 A up to 240 VAC. See section 4.5 Configuration “CON” for details on relay settings.

8. The Fan Relay can be configured for latching or non-latching (default) when activated (when the gas

concentration exceeds fan relay set point). Once latched in, power will need to be interrupted or the “TEST” button pressed to un-latch the relay condition.

9. The Fan Relay will engage if the fan setting Carbon Monoxide or Nitrogen Dioxide concentration is exceeded

for longer than the Fan Relay Delay time. Unless it is configured for latching, the fan relay will disengage once both of the following conditions have been met:

• Carbon Monoxide and Nitrogen Dioxide concentration have dropped below fan setting

• Fan Relay Run time has been exceeded

Note that the “disable” fan setting will cause the fan relay to not engage. The fan relay will engage in trouble fault condition (if the Trouble Fan Setting Option is set to “ON”) and will disengage once trouble fault condition is cleared.

10. The Current Loop is 4 mA in clean air and 4-20 mA for 0-200ppm CO and 4-20 mA for 0-20ppm NO

are two terminals and polarity is marked on the connector.

. There

NOTE: 22 to 12 AWG wire shall be used. Wire used shall meet the temperature range of the detector i.e. 0°F to 125° F (-18°C to 52°C).

Figure 3–1 6-Series 4-20 mA CO Output diagram

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Figure 3–2 6-Series 4-20 mA NO2 Output diagram

Figure 3–3 6-Series Rear View

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Figure 3–4 6-Series Typical Installation

Figure 3–5 6-Series Multiple Devices

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Figure 3–6 6-Series Alarm Control Panel

Figure 3–7 6-Series DVP-120 Control Panel

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Macurco External

Horn/Strobe

16-33

VDC

N.O.

POWER

N.C.

CX-6

+ +

Power

VDC or

12-32

12-24

VAC

Transformer

16-33

VDC

Transformer

Macurco CX-xx Manual (Rev-1.0) Eng

Figure 3–8 6-Series Alternate Alarm Panel

In this application (above) the Fan or primary relay is used as a low-level alarm relay. The Alarm or secondary relay is used as a supervisory relay when utilized in the normally closed configuration. The CX-6 monitors all critical functions of the unit through software diagnostics that continually test and verify its operations. If a problem is found, the unit will switch to a fail-safe/error mode or trouble condition. In this error mode the Fan* and Alarm relays will be activated indicating the trouble condition at panel and the CX-6 display will flash the error.

*See section 4.5.14 Select Trouble Fan Setting – “tFS” for options.

Figure 3–9 6-Series Horn & Strobe Combo Wiring

Macurco External Horn/Strobe model number is HS-X, where X represents lens color, R for red lens cover, G for green lens cover, B for blue lens cover, A for amber lens cover, C for clear lens cover. Sound pressure for Horn/Strobe model is at least 85dB at 10 feet.

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Macurco CX-xx Manual (Rev-1.0) Eng

3.2.2 12-Series Line Voltage

1. The CX-12 mounts on a 4” square (or 4x4) electrical box supplied by the contractor. Do not mount the CX-12

inside another box, unless it has good air flow through it.

2. There are two terminals for the mains power connection labeled L (line) and N (neutral). Mains connections

should be done in accordance with National and Local Electrical Codes. Only qualified personnel should connect mains power to any device.

3. There are two terminals for the dry alarm relay contacts with no polarity preference. The alarm relay can

switch up to 0.5 A 120 V, or 60 VA. The alarm relay is activated if gas reaches or exceeds the alarm settings. See section 4.5 Configuration “CON” for details on relay settings.

4. The alarm relay can be configured to normally open (default) (N.O.) or normally closed (N.C.) and will

activate:

a. if either the CO or NO

concentration drops below the alarm set point. Note that setting both “ArS.C” and “ArS.n” to “diS” will cause the alarm relay not to engage.

b. during a power up test “PUt”. c. when a trouble condition is present.

5. The dry contact, SPDT fan relay has three terminals. The common (COM.), normally open (N.O.) and the

normally closed (N.C.) contact. The fan relay can switch up to 5.0 A up to 240 VAC. See section 4.5 Configuration “CON” for details on relay settings.

6. The Fan Relay can be configured for latching or non-latching (default) when activated (when the gas

concentration exceeds fan relay set point). Once latched in, power will need to be interrupted or the “TEST” button pressed to un-latch the relay condition.

7. The Fan Relay will engage if the fan setting Carbon Monoxide or Nitrogen Dioxide concentration is exceeded

for longer than the Fan Relay Delay time. Unless it is configured for latching, the fan relay will disengage once both of these conditions have been met:

• Carbon Monoxide and Nitrogen Dioxide concentrations have dropped below fan setting

• Fan Relay Run time has been exceeded

8. The Current Loop is 4 mA in clean air and 4-20 mA for 0-200ppm CO and 4-20 mA for 0-20ppm NO

are two terminals and polarity is marked on the connector.

gas concentration exceeds the alarm set point. It will deactivate once the gas

. There

NOTE: 22 to 12 AWG wire shall be used. Wire used shall meet the temperature range of the detector i.e. 0°F to 125° F (-18°C to 52°C).

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Figure 3–10 12-Series 4-20 mA CO Output diagram

Figure 3–11 12-Series 4-20 mA NO2 Output diagram

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Figure 3–12 12-Series Rear View

Figure 3–13 12-Series Typical Installation

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Figure 3–14 12-Series Multiple Device diagram

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Figure 3–15 12-Series Alarm Control Panel

Figure 3–16 12-Series DVP-120 Control Panel

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Macurco CX-xx Manual (Rev-1.0) Eng

Figure 3–17 12-Series Alternate Alarm Panel

Figure 3–18 12-Series Horn & Strobe Combo Wiring

3.3 Terminal Connection

3.3.1 6-Series Low Voltage

Except for the safety ground, all field wiring is completed via modular connectors (provided). After wiring, simply plug the modular connectors into the matching connectors on the back side of the detector.

NOTE: 22 to 12 AWG wire shall be used. Wire used shall meet the temperature range of the detector i.e. 0°F to 125° F (-18°C to 52°C).

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3.3.1.1 Mains Power Connection

Connect the CX-6 to Class 2 listed power supply only. It is suggested to use a separate transformer for powering the unit or units because of possible interferences from other devices on the same power supply. Connect the CX-6 to the control cables with terminal plugs. When making connections, make sure the power is off. There are two terminals for Power: 12 to 24 VAC or 12 to 32 VDC, with no polarity preference

Ensure that the wire cannot be easily pulled from the connector. Plug the modular connection into the Fan/Power connection and ensure that it latches into the header properly.

3.3.1.2 Fan Relay Connection

All of the SPDT Fan relay terminals are available at the Fan/Power modular connector. Each Fan relay terminal normally open, common and normally closed (NO, COM and NC) can accommodate a wire size 12 to 22 AWG. To install the wiring for the relays, disconnect the connector from the header. Strip the insulation of each wire back approximately 1/4 in. (6.5 mm), insert the bare wire into the terminal and tighten the screw clamp. Ensure that the wire cannot easily be pulled from the connector. Plug the modular connection into the Fan/Power connection and ensure that it latches into the header properly.

3.3.1.3 Alarm Relay Connection

The external alarm connections (A and B) are available at the Alarm modular connector. There is no polarity for these connections. To install the wiring for the alarm contacts, disconnect the connector from the header on the detector. Strip the insulation of each wire back approximately 1/4 in. (6.5 mm), insert the bare wire into the terminal and tighten the screw clamp. Ensure that the wire cannot easily be pulled from the connector. When the wires are connected, seat the modular connector into the header ensuring that the latch engages.

3.3.1.4 4-20 mA Signal Connection

The positive and negative 4-20mA signal connections (+ and -) are available at the 4-20mA modular connector, a 2position connector. To install the wiring for the 4-20 mA contacts, disconnect the connector from the header on the detector. Strip the insulation of each wire back approximately 1/4 in. (6.5 mm), insert the bare wire into the terminal and tighten the screw clamp. Ensure that the wire cannot easily be pulled from the connector. When the wires are connected, seat the modular connector into the header ensuring that the latch engages.

3.3.2 12-Series Line Voltage

With the exception of the safety ground, all field wiring is completed via modular connectors (provided). After wiring, simply plug the modular connectors into the matching connectors on the back side of the detector.

NOTE: 22 to 12 AWG wire shall be used. Wire used shall meet the temperature range of the detector i.e. 0°F to 125° F (-18°C to 52°C).

3.3.2.1 Power Connection

Mains connections should be done in accordance with National and Local Electrical Codes. Only qualified personnel should connect Mains power to any device. Macurco recommends a minimum wire size of AWG18 and the wire insulator must be rated for 140°F (60°C) service. The modular connector will accept wire from 12 to 22 AWG.

The safety ground wire should be secured to the ground screw of the metal electrical box. Tighten the screw and make sure the wire is snug. Ensure that the wire cannot be pulled out from under the screw.

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Macurco CX-xx Manual (Rev-1.0) Eng

The Line (L) and Neutral (N) wires should be stripped 1/4 in. (6.5 mm), insert the wire into the ”L” and “N” wire positions of the modular Fan/Power connector and tighten the screw clamp. Ensure that the wire cannot be easily pulled from the connector. Plug the modular connection into the Fan/Power connection and ensure that it latches into the header properly.

3.3.2.2 Fan Relay connection

3.3.2.3 Alarm Relay Connection

3.3.2.4 4-20 mA Signal connection

4 Operations

4.1 Power up

The CX-xx cycles through an internal self-test cycle for the first minute that it is powered. The unit will execute the test cycle any time power is dropped and reapplied (i.e. power failure).

During the self-test cycle the unit will:

• Display the firmware version number, then count down from 60 to 0 (if the display setting is “On”).

• The alarm relay will be activated for 10 seconds and the fan relay for 60 seconds during the power-up cycle

(if PUt is ON).

• The indicator light (LED) will flash green during the self-test cycle.

• 4-20mA will ramp up to 16mA during the warmup (if 420 is ON and PUt is ON).

• At the end of the 1-minute cycle, the unit will take its first sample of the air and the indicator light will turn

solid green.

4.2 Display turned “On”

With the display (“dSP”) setting turned “On”, the detector will operate as follows:

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Clean Air – The CX-xx will flash between the current concentration of CO ppm and the current concentration of NO ppm. The CO reading will start with a “C” and the NO

Fan Relay Level – When either the CO or NO

concentration reaches the Fan Relay setting and the Fan Run Delay

reading will start with an “n”.

“Frd” period has elapsed, the display will flash between “FAn” and the current concentration of gases. The sequence of display when the Fan Relay is activated is: “Fan”, CO (“CXXX”) reading, NO

Alarm Relay Level – When either the CO or NO

concentration reaches the Alarm Relay setting, the display will flash

reading (“n Y.Y”).

between “ALr” and the current concentration of gases. The sequence of display when the Alarm Relay is activated is: “ALr”, CO Reading (“CXXX”), NO

reading (“n Y.Y”).The buzzer will sound indicating “Alarm” if the buzzer is turned

“On”.

Trouble – When the device is in a trouble state, the display will display the “t” Error code (t001 for example) and the Alarm Relay will activate. If the Trouble Fan Setting is enabled, the Fan Relay will activate. See Section 5.1.2 Trouble Codes and Section 4.5.14 Select Trouble Fan Setting – “tFS”

NOTE: Trouble states related to the CO and NO exists for the CO or NO

sensor only, the display will alternate between the trouble code for the sensor in the

sensors are represented by different “t” Error codes. So, if an error

trouble state and the gas reading for the sensor in the normal state.

Calibration Due – When the Calibration Period functionality is enabled and the detector is within 1 month of the calibration period, the Calibration Due message will be displayed. Calibration Due is indicated by “CdUE” (for CO Sensor) and “ndUE” (for NO will be “CdUE”, CO reading, “ndUE”, NO

sensor). When both CO and NO2 sensors are in Calibration Due, the display sequence

reading.

Calibration Due is resolved only with a successful field calibration.

NOTE: If a Fan or Alarm Relay is activated during Calibration Due, ‘Fan’ or ‘ALr’ will be appended at the end of the display sequence for calibration due.

4.3 Display turned “Off”

With the display (“dSP”) setting turned “OFF”, the detector will operate as follows:

Clean Air –The display does not show the CO or NO

Fan Relay Level – When the CO or NO

concentration reaches the Fan Relay setting and the Fan Run Delay “Frd”

period has elapsed, the display will continuously show “FAn”.

Alarm Relay Level – The display does not show the CO or NO relay is activated. The buzzer will sound indicating “Alarm” if the buzzer is turned “On”.

Trouble –When the device is in a trouble state, the display will display the “t” Error code (t001 for example) and the Alarm Relay will activate. If the Trouble Fan Setting is enabled, the Fan relay will switch activating the relay. See Section 5.1.2 Trouble Codes and Section 4.5.14 Select Trouble Fan Setting – “tFS”.

sensor). When both CO and NO2 sensor are in Calibration Due, the display sequence

will be “CdUE”, “ndUE”. REV – 1.1 [34-2900-0512-0 ] 21 | Page

concentration. Only the Power indicator light on will be on.

concentration but will show “ALr” when the Alarm

Macurco CX-xx Manual (Rev-1.0) Eng

Calibration Due is resolved only with a successful field calibration.

NOTE: If a Fan or Alarm Relay is activated during Calibration Due, ‘Fan’ or ‘ALr’ will be appended at the end of the display sequence.

4.4 4-20mA Loop

In High Mode “HigH”, the output will correspond to the higher output of the two sensors. For example, a CO reading of 50ppm corresponds to an output of 8mA and a NO output in High Mode will be 12mA.

NOTE: High Mode should only be used when the detector is used as a standalone unit. Dual Mode must be used when the detector is connected to a Macurco DVP control panel.

In Dual Mode “dUAL”, the current fluctuates between different values when measured using an ammeter. It will represent the CO and NO

readings simultaneously by using a signal that is readable by a Macurco DVP panel.

Clean Air – With the 4-20 mA function turned “On” in “HigH” mode, and the current concentration of gases at “0” (zero), the 4-20mA loop will output 4 mA.

reading of 10ppm corresponds to an output of 12mA. The

Gas read – With the 4-20 mA function turned “On” in “HigH” mode, the output will read between 4 mA and 20 mA depending on the current concentration of gases.

Trouble – With the 4-20 mA function turned “On” in “HigH” mode and the Trouble Fan Setting enabled, the 4-20 mA loop will output 1 mA or 24 mA depending on the Trouble condition. See Section 5.1 On-Board Diagnostics.

4.5 Configuration “CON”

To change the settings, remove the Philips screw on the front of the CX-xx. Pull off the front cover of the unit. Locate the MENU and ENTER buttons on the top left of the board.

Figure 4–1 Board View

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Setting Description

Display

Default Setting

Power Up Test

PUt

Display

dSP

Buzzer

bUZ

CO Alarm Relay Setting

ArS.C

200

NO2 Alarm Relay Setting

ArS.n

Alarm Relay Configuration

Arc

CO Fan Relay Setting

FrS.C

NO2 Fan Relay Setting

FrS.n

2.5

Fan Relay Delay

Frd 3 Fan Relay Minimum Runtime

Frr 0 Fan Relay Latching

FrL

OFF

Trouble Fan Setting

tFS

OFF

4-20 mA

420

bAS

4-20 mA mode

420.n

dUAL

CO Calibration Period

CAL.C

diS

NO2 Calibration Period

CAL.n

diS

Macurco CX-xx Manual (Rev-1.0) Eng

4.5.1 Default – Factory Settings

The CX-xx comes pre-programed with the following default settings:

To reset the device to factory settings, see section 4.5.2 Select Default Configuration – “dEF”.

4.5.2 Select Default Configuration – “dEF”

Available options are “YES”, “nO”.

NOTE: This menu cannot be changed when the CX-xx is in calibration due or calibration overdue. (Refer to Calibration Period – “CAL” for information on calibration due and calibration overdue.)

To select the Default Configuration (this will reset the device to its default settings), in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

3. The first selection is the “dEF” or Default setting. Push Enter.

4. If it is already in Default configuration, “YES” will be displayed and there will be no available action. If it is

not already in Default configuration, “nO” will be displayed.

5. Push Next to change it to “YES” (display will begin flashing).

6. Push Enter to confirm resetting the device to its default settings (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.3 Select Power-Up Test Setting – “PUt”

Available options are “On” (default), “OFF”.

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Macurco CX-xx Manual (Rev-1.0) Eng

To select the Power Up Test Configuration, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

3. Push Next 1 time to get to “PUt” or Power Up Test Configuration.

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.4 Select Display Configuration – “dSP”

Available options are “On” (default), “OFF”.

To select the Display Configuration, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

3. Push Next 2 times to get to “dSP” or Display Configuration.

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.5 Select Buzzer Configuration – “bUZ”

Available options are “On” (default), “OFF”.

To select the Buzzer Configuration, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

3. Push Next 3 times to get to “bUZ” or Buzzer setting.

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.6 Select Alarm Relay Setting for CO – “ArS.C”

Available options are “diS”, 50, 100, 150, 200 (default).

To select the Alarm Relay Setting for CO, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

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Macurco CX-xx Manual (Rev-1.0) Eng

2. Push the Enter button to enter the Con menu.

3. Push Next 4 times to get to “ArS.C” or Alarm Relay Setting for CO.

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.7 Select Alarm Relay Setting for NO2 – “ArS.n”

Available options are “diS”, 1.0, 2.0, 3.0, 4.0, 5.0 (default), 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0,

17.0, 180.0, 19.0, 20.0.

To select the Alarm Relay Setting for NO

, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

3. Push Next 5 times to get to “ArS.C” or Alarm Relay Setting for NO

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.8 Select Alarm Relay Configuration – “Arc”

Available options are “nO” (default), “nC”.

To select the Alarm Relay Configuration, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

3. Push Next 6 times to get to “Arc” or Alarm Relay Configuration.

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.9 Select Fan Relay Setting for CO – “FrS.C”

Available options are “diS”, 15, 25, 35 (default), 50, 100.

To select the Fan Relay Setting for CO, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

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Macurco CX-xx Manual (Rev-1.0) Eng

3. Push Next 7 times to get to “FrS.C” or Fan Relay Setting for CO.

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.10 Select Fan Relay Setting for NO2 – “FrS.n”

Available options are “diS”, 0.5, 0.7, 1.0, 1.2, 1.5, 1.7, 2.0, 2.2, 2.5 (default), 2.7, 3.0, 3.2, 3.5, 3.7, 4.0, 4.2, 4.5, 4.7,

5.0.

To select the Fan Relay Setting for NO2, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

3. Push Next 8 times to get to “FrS.n” or Fan Relay Setting for NO2.

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.11 Select Fan Relay Delay Setting – “Frd”

Available options are 0, 1, 3 (default), 5, 10.

To select the Fan Relay Delay Setting, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

3. Push Next 9 times to get to “Frd” or Fan Relay Delay Setting.

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.12 Select Fan Relay Minimum Runtime Setting – “Frr”

Available options are 0 (default), 3, 5, 10, 15.

To select the Fan Relay Minimum Runtime Setting, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

3. Push Next 10 times to get to “Frr” or Fan Relay Minimum Runtime Setting.

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Macurco CX-xx Manual (Rev-1.0) Eng

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.13 Select Fan Relay Latching Setting – “FrL”

Available options are “On”, “OFF” (default).

To select the Fan Relay Latching Setting, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

3. Push Next 11 times to get to “FrL” or Fan Relay Latching Setting.

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.14 Select Trouble Fan Setting – “tFS”

Available options are “On”, “OFF” (default).

To select the Trouble Fan Setting, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

3. Push Next 12 times to get to “tFS” or Trouble Fan Setting.

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.15 Select 4-20mA Output Setting – “420”

Available options are “bAS” (default), “EnH”, “OFF”.

NOTE: If the calibration period feature is used and the detector is connected to a panel, the calibration period information is communicated to the Macurco DVP panel only when “420” is set to “EnH”. Please refer to the Macurco DVP Panel to confirm if the calibration period feature is supported by the panel. If calibration period feature is not supported by Macurco DVP panel, ‘bAS’ must be the selected output setting.

To select the 4-20mA Output Setting, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

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Macurco CX-xx Manual (Rev-1.0) Eng

2. Push the Enter button to enter the Con menu.

3. Push Next 13 times to get to “420” or 4-20mA Output Setting.

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.16 Select 4-20mA Mode – “420.n”

Available options are “dUAL” (default), “HigH”.

NOTE: Dual Mode must be used when the detector is connected to a Macurco DVP control panel. High Mode should only be used when the detector is used as a standalone unit.

To select the 4-20mA Mode, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

3. Push Next 14 times to get to “420.n” or 4-20mA Mode.

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

4.5.17 Select Calibration Period for CO Sensor – “CAL.C”

The value selected for Calibration Period is the number of months. The CX-xx indicates a “calibration due” when it is within 1 month of the calibration period, and a “calibration overdue” when the detector has reached or exceeded the calibration period. The Calibration Period setting cannot be changed if the CX-xx is indicating “calibration due” or “calibration overdue”.

Available options are “diS” (default), 3, 6, 12, 24.

To select the Calibration Period for the CO sensor, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

3. Push Next 15 times to get to “CAL.C”.

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

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Macurco CX-xx Manual (Rev-1.0) Eng

4.5.18 Select Calibration Period for NO2 Sensor – “CAL.n”

Available options are “diS” (default), 3, 6, 12, 24.

To select the Calibration Period for the NO

sensor, in normal mode:

1. Push the Next button to get to “Con” or the Configuration menu.

2. Push the Enter button to enter the Con menu.

3. Push Next 16 times to get to “CAL.n”.

4. Push Enter. The display will show the current setting.

5. Push Next to cycle through the available settings (display will begin flashing).

6. Push Enter to confirm the new setting (display will stop flashing).

7. Push Enter once more to return to the configuration menu.

8. Push Next until “End” is displayed.

9. Push Enter to return to normal operation.

5 Troubleshooting

5.1 On-Board Diagnostics

The CX-xx monitors all critical functions of the unit through software diagnostics that continuously test and verify unit operations. If a problem is found, the unit will switch to a fail-safe/error mode or trouble condition.

In this error mode, the Alarm relay will be activated, the 4-20 mA current loop will go to 24 mA, the unit will display the error code, the green status indicator LED light will flash, and the buzzer will chirp intermittently. The Fan relay will also engage if the Trouble Fan Setting Option is set to “On”. This is a safety precaution.

To clear this mode, simply turn off power to the unit for a few seconds or push the ENTER/TEST button (inside the unit). This will cause the unit to restart the 1-minute self-test cycle.

5.1.1 4-20mA troubleshooting

NOTE: The output from the 4-20ma terminals is steady only when the 4-20mA mode is set to high mode. In dual mode, fluctuating output will be observed when measured using an ammeter.

• 0 mA is most likely a connection problem

• 1 mA indicates Calibration Overdue (if 4-20mA is configured to ‘EnH’)

• 4-20 mA is normal gas reading range (0-200 ppm CO, 0-20 ppm NO

)

• 24 mA indicates a Trouble condition

5.1.2 Trouble Codes

If the detector encounters an error, a trouble code is displayed. The trouble code is displayed as “tXXX” where XXX is a unique trouble code for each sensor. If a trouble code is larger than 800, it is for CO. If it is smaller than 800, it is for NO

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. The following table shows the trouble codes for the CO and NO2 sensors.

+ 138 hidden pages

Macurco MA-CX-12 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 General Safety Information

1.1 General Description

1.2 List of warnings

2 Use Instructions and Limitations

2.1 Use For

2.2 Do NOT use for

2.3 Features

2.4 Specifications

2.4.1 6-Series Low Voltage

2.4.2 12-Series Line Voltage

3 Installation and Operating Instructions

3.1 Location

3.2 Installation

3.2.1 6-Series Low Voltage

3.2.2 12-Series Line Voltage

3.3 Terminal Connection

3.3.1 6-Series Low Voltage

3.3.1.1 Mains Power Connection

3.3.1.2 Fan Relay Connection

3.3.1.3 Alarm Relay Connection

3.3.1.4 4-20 mA Signal Connection

3.3.2 12-Series Line Voltage

3.3.2.1 Power Connection

3.3.2.2 Fan Relay connection

3.3.2.3 Alarm Relay Connection

3.3.2.4 4-20 mA Signal connection

4 Operations

4.1 Power up

4.2 Display turned “On”

4.3 Display turned “Off”

4.4 4-20mA Loop

4.5 Configuration “CON”

4.5.1 Default – Factory Settings

4.5.2 Select Default Configuration – “dEF”

4.5.3 Select Power-Up Test Setting – “PUt”

4.5.4 Select Display Configuration – “dSP”

4.5.5 Select Buzzer Configuration – “bUZ”

4.5.6 Select Alarm Relay Setting for CO – “ArS.C”

4.5.7 Select Alarm Relay Setting for NO2 – “ArS.n”

4.5.8 Select Alarm Relay Configuration – “Arc”

4.5.9 Select Fan Relay Setting for CO – “FrS.C”

4.5.10 Select Fan Relay Setting for NO2 – “FrS.n”

4.5.11 Select Fan Relay Delay Setting – “Frd”

4.5.12 Select Fan Relay Minimum Runtime Setting – “Frr”

4.5.13 Select Fan Relay Latching Setting – “FrL”

4.5.14 Select Trouble Fan Setting – “tFS”

4.5.15 Select 4-20mA Output Setting – “420”

4.5.16 Select 4-20mA Mode – “420.n”

4.5.17 Select Calibration Period for CO Sensor – “CAL.C”

4.5.18 Select Calibration Period for NO2 Sensor – “CAL.n”

5 Troubleshooting

5.1 On-Board Diagnostics

5.1.1 4-20mA troubleshooting

5.1.2 Trouble Codes