AKO-575022 V3 Gas Transmitter User Guide

AKO-575022 V3 Gas Transmitter

Product Information

• The V3 Gas Transmitter is a device designed for detecting and supervising gas concentration levels in industrial refrigeration systems. The transmitter is equipped with a gas sensor that detects gas concentration levels and displays the type of gas detected on the device’s display. The device is designed to detect gases that are heavier than air and always concentrated in the lowest part of the refrigerated room or space.
• The device comes with a warning that it should be installed in a place protected from vibrations, water, and corrosive gases, where the ambient temperature does not exceed the value indicated in thetechnical data. The device is not suitable for areas classified as potentially explosive. It also supervises a point and not an area. If perimeter supervision is required, several sensors should be installed around that area.
• The device has working conditions that need to be followed, such as avoiding handling refrigerant gases near the sensor. If this is unavoidable, use Set Hold or Maintenance mode. The sensor should be installed away from smoke outlets located in confined spaces or from engines, generators, or motorised machinery (fork-lift trucks, etc.). The detector should usually be installed in an area where gas may concentrate, near places where gas leaks could start.

Product Usage Instructions

Before using the V3 Gas Transmitter, ensure that you have read and understood all the warnings, working conditions, and installation guidelines provided in the user manual.

• Choose an installation site that is protected from vibrations, water, and corrosive gases and where the ambient temperature does not exceed the value indicated in the technical data.
• Avoid installing the device in areas classified as potentially explosive.
• If perimeter supervision is required, install several sensors around that area.
• Avoid handling refrigerant gases near the sensor. If this is unavoidable, use Set Hold or Maintenance mode.
• Do not paint the sensor or place it near solvents or paints. Exposure to acetone vapors may generate false alarms.
• Install the sensor away from smoke outlets located in confined spaces or from engines, generators, or motorized machinery (fork-lift trucks, etc.).
• Install the detector in an area where gas may concentrate, near places where gas leaks could start.
• Leave a distance of around 50 cm free when choosing the installation site.

Pressing once will mute the gas Pre-Alarm or Alarm sound if it sounds (See parameter b03). Pressing for 3 seconds activates or deactivates Set Hold mode. Pressing for 6 seconds activates or deactivates maintenance mode. In the programming menu, it allows scrolling around the different levels, or during the setting of a parameter, changing its value. Pressing once (< 1 second) will show the type of gas detected, the date and time in sequential order.
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Warning

• Transmitters/detectors should be installed in a place protected from vibrations, water and corrosive gases, where the ambient temperature does not exceed the value indicated in the technical data.
• The transmitters/detectors are not suitable for areas classified as potentially explosive.
• Transmitters/detectors supervise a point and not an area. If the gas leak does not reach the sensor, or the level of concentration in that point does not reach the foreseen values according to the type of gas no alarm will be activated. If perimeter supervision is required, several sensors should be installed around that area.

Working conditions:

• Avoid handling refrigerant gases near the sensor. If this is unavoidable, use Set Hold or Maintenance mode. Do not paint the sensor or place it near solvents or paints. Exposure to acetone vapours may generate false alarms.
• The sensor should be installed away from: -Smoke outlets located in confined spaces or from engines, generators or motorised machinery (fork-lift trucks, etc.).
• Particularly damp areas or areas with strong ventilation.
• The detector should usually be installed in an area where gas may concentrate, near places where gas leaks could start
• The gases currently used in industrial refrigeration, for which this transmitter has been designed, are heavier than air. They are therefore always concentrated in the lowest part of the refrigerated room or space. Please take this into consideration when choosing the installation site. It is advisable to leave a distance of around 50 cm free.

Always disconnect the power supply to do the wiring.
The wiring between the transmitter and the station must NEVER be installed in a conduit together with power, control or power supply cables.
Cables for wiring the relay contact should have an adequate section depending on the unit to be connected.
Certain international standards maintain that the power supply of the alarm should originate from a different circuit to that used by the refrigeration and ventilation system. Please ensure that you comply with current local regulations. If connecting to a MODBUS network the double connection strips included must be used.

Description

• Fixed: Gas pre-alarm activated.

  • Flashing: Gas alarm activated.

• Fixed: Set Hold mode activated

  • Flashing: Maintenance mode activated

• The display shows the type of gas detected

• If the gas Pre-Alarm or Alarm sounds, pressing once will mute the alarm tone (See parameter b03). In the programming menu, it exits the parameter without saving changes, returns to previous level or exits programming.

• Pressing for 3 seconds activates or deactivates Set Hold mode.

  • Pressing for 6 seconds activates or deactivates maintenance mode.
  • In the programming menu it allows scrolling around the different levels, or during the setting of a parameter, changing its value.
  • Pressing once (< 1 second) will show the type of gas detected, the date and time in sequential order.

• Fixed: CAMM module in operation

  • Flashing: Malfunction in CAMM module

• Bluetooth activated (CAMM module only)

• The display shows the current gas concentration in ppm (parts per million).

• The value displayed should be multiplied by 10.

• Pressing for 3 seconds displays the Pre-Alarm and Alarm levels that have been configured. In the programming menu it allows scrolling around the different levels, or during the setting of a parameter, changing its value.

• Gas alarm on mute

  • Unit in programming mode

Operation

Without alarms

The display shows the current gas concentration in ppm.
Parameter b02 allows you to fix a value below which the display will always show zero.

Alarms

The transmitter emits an acoustic alarm, the alarm indicator flashes and activates the relays when certain gas concentration levels are exceeded. If the transmitter is connected to a station, the station will emit the acoustic alarm. The relays will be activated in both devices.
There are two alarm levels depending on the concentration of gas detected:
Pre-Alarm and Alarm. Both are factory preset but can be modified by means of parameters AL3 and AL6. These values comply with domestic and international regulations. However, please ensure that these values comply with current local regulations. In order to modify these values, parameter AL1 should be configured to 1.

Technical specifications

• Power supply……………………………………………………………….12 – 30 Vdc
• Consumption Typical………………………………………………………….. 75 mA
• Maximum……………………………………………………. 125 mA
• Pre-Alarm/Alarm relay……………………………. SPDT 30 Vdc, 2 A, cos j =1

Working ambient temperature:

• AKO-575744……………………………………..-40 ºC to 50 ºC Other models……………………………………..-30 ºC to 50 ºC

Storage ambient temperature:

• AKO-575744……………………………………..-40 ºC to 60 ºC
• Other models……………………………………..-30 ºC to 60 ºC
• Range of maximum moisture permitted..0 – 95 % HR (without condensation)
• Protection degree………………………………………………………………… IP 68
• Type of sensor…………………… NDIR (Non-Dispersive Infrared Technology)

Display range:

• AKO-575744………………………………….0 – 10000 x1 ppm
• Other models……………………………………0 – 2000 x1 ppm
• Estimated working life……………………………………………………….. 7 years
• Dimensions………………………………. 202 mm (W) x 82 (H) x 55.5 mm (D)

Default parameters

To set the device to factory default, switch off the power supply and switch it on again, press the sequence N, Q and SET within 2 minutes.
The display shows the message dFp (default parameters) with a choice of two options:

• 0: Parameters are not modified
• 1: All parameters are reset to their default values

Parameters

The unit operating parameters are organised in different groups or families according to their function. The Def. column indicates the default parameters set in the factory. In order to access the programming menu, hold the SET key for 6 seconds, or until ‘’PRG’’ appears on the display. To modify the Pre- Alarm and Alarm levels, press SET for 3 seconds or until “Al3” appears on the display (Only if AL1=1)

• This allows you to scroll through the different levels, or when setting a parameter, to change its value
• SET: This accesses the level shown on the display or,when setting a parameter, it accepts the new value.
• ESC: This exits the parameter without saving changes, returns to previous level, or exits programming.

1: Set by user

|  | 0| 1| 1
AL2| Pre-Alarm 0: Disabled; 1: Enabled|  | 0| 1| 1
AL3| Pre-Alarm Level (1)| AKO-575744| PPM| b02 / AL4+1| 4000| AL6
Other models| 500
AL4| Pre-Alarm Differential| PPM| 10| 100| 200
AL5| Pre-Alarm Delay (0: Disabled)| min.| 0| 0| 15
AL6| Alarm Level (1)| AKO-575744| PPM| AL3| 8000| 10000
Other models| 1000| 2000
AL7| Alarm Differential| PPM| 10| 100| 200
AL8| Alarm Delay (0: Disabled)| min.| 0| 0| 15
ep| Exit to level 1
Level 1| Level 2| BASIC CONFIGURATION
Description| Values| Def.| Def.| Max.
bcn| Gc1| Type of gas to be measured (Reading only)|  | –| –| –

Gc2

| Gas to be measured with the Universal sensor (Only if Gc1=brd1) ALL; 125; 134A; 404A; 407A; 407F; 410A; 448A; 449A; 513A; 452A; 32; 23; 455A (2)| |

ALL

|
b01| Display      0: Measurement in PPM

1: Type of gas to be measured

|  | 0| 0| 1

b02

| Minimum value to be shown on the display (Lower values are shown as 0) Does not affect the values shown by communication (AKONet or CAMM module)|

PPM

|

0

|

0

|

250

b03

| Function of the mute key (Applicable to Alarm and Pre-Alarm) 0: Disabled 1: Deactivate acoustic alarm

2: Deactivate relay  3: Deactivate both

|

0

|

1

|

3

b04| Acoustic alarm 0: Disabled 1: Enabled|  | 0| 1| 1
b10| Access code (password) function       0: Disabled;

1: Block access to parameters           2: Block keypad

| 0| 0| 2
b11| Access code (password)|  | 0| 0| 99
b20| MODBUS address|  | 1| (3)| 247
b21| MODBUS speed      0: 9600 bps    1: 19200 bps

2: 38400 bps 3: 57600 bps

|  | 0| 0| 3
b22| STOP bits for MODBUS communication 1: 1 STOP bit, 2: 2 STOP bits| 1| 1| 2
b23| MODBUS communication parity 0: No parity, 1: Odd, 2: Even| 0| 0| 2
EP| Exit to level 1
Level 1| Level 2| INPUT AND OUTPUT CONFIGURATION
---|---|---
Description| Values| Def.| Def.| Max.
{n0| {00| Reset to zero of the sensor (Calibration only) 0: Disabled 1: Reset to zero activated| 0| –| 1
{01| Setting the sensor (Calibration only) 0: Disabled 1: Setting activated| 0| –| 1
{11| Polarity of digital input 1 (Remote Mute)

0: Activates on opening contact; 1: Activates on closing contact

| 0| 0| 1
{21| Polarity of digital input 2 (Remote Set Hold)

0: Activates on opening contact; 1: Activates on closing contact

| 0| 0| 1
o00| Type of output 4/20 mA (Reading only) 0: Calibrated for alarm station; 1: Linear| 0| 0| 1
ep| Exit to level 1
Level 1| Level 2| INFORMATION (Reading only)
Description| Values| Def.| Def.| Max.
tid| PU| Programme version|  | –| –| –
PR| Programme revision|  | –| –| –
BU| Bootloader version|  | –| –| –
BR| Bootloader revision|  | –| –| –
PAR| Parameter map revision|  | –| –| –
PCR| CRC value of the programme|  | –| –| –
BCR| CRC value of the bootloader|  | –| –| –
EP| Exit to level 1

MESSAGES

minutes.

es

| Error or malfunction of the sensor. The Pre-Alarm relay is activated, the transmitter emits 3 alert tones every 2 minutes and the AL icon flashes. Deactivate the power supply and activate it again. If after a few seconds the error persists, please contact your technical support centre.
tsH| The sensor has reached its maximum working temperature.
tSl| The sensor has reached its minimum working temperature.

1. In order to modify these levels, parameter AL1 should be configured to 1.
2. R-450A, R-442A, R-454A, R-454C, R-1234YF, R-1234ZE are detected using GC2=ALL.
3. The MODBUS address will be shown on the transmitter label by default.

AKO ELECTROMECÁNICA , S.A.L.
Avda. Roquetes, 30-38 08812
Sant Pere de Ribes.
Barcelona
Spain.
www.ako.com
We reserve the right to supply materials that might vary slightly to those described in our Technical Sheets. Updated information is available on our website.

References

• Industrial refrigeration: control and safety | AKO Group

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