AKO 555244 Gas and Temperature User Manual

User Manual for AKO models including: 555244, 555244 Gas and Temperature, 555244, Gas and Temperature, Temperature

Manuales y documentación · Ako

Manuals and documentation · Ako

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3555524402-1

5552H4402 Ed. 02

AKO-555244
Alarm centre for trapped person, gas and temperature

User manual

5552H4402 Ed. 02

Index

Page

Versions and references........................................................................................................................ 3 Cautions .............................................................................................................................................. 4 Maintenance........................................................................................................................................ 4 Description........................................................................................................................................... 5 Installation........................................................................................................................................... 6 Wiring.................................................................................................................................................. 7 Initial configuration (wizard)................................................................................................................. 8 Operation ............................................................................................................................................ 9 Programming menu............................................................................................................................. 12 Technical specifications........................................................................................................................ 15

AKO Electromecánica thanks you and congratulates you on the purchase of our product, the development and manufacture of which involved the most innovative technologies, as well as rigorous production and quality control processes.
Our commitment to achieving customer satisfaction and our continuous efforts to improve day by day are confirmed by the various quality certificates obtained.
This is a high performance, technologically advanced product. Its operation and the final performance achieved will depend, to a great extent, on correct planning, installation, configuration and commissioning. Please read this manual carefully before proceeding to install it and respect the instructions in the manual at all times.
Only qualified personnel may install the product or provide technical support.
This product has been developed for use in the applications described in the manual. AKO Electromecánica does not guarantee its operation in any use not foreseen in this document and accepts no liability in the case of damage of any type which may result from incorrect use, configuration, installation or commissioning.
Complying with and enforcing the regulations applying to installations where our products are destined to be used is the responsibility of the installer and the customer. AKO Electromecánica accepts no liability for damage which may occur due to failure to comply with these regulations. Rigorously follow the instructions described in this manual.
In order to extend the lifetime of our products to the maximum, the following points must be observed:
Do not expose electronic equipment to dust, dirt, water, rain, moisture, high temperatures, chemical agents or corrosive substances of any type. Do not subject equipment to knocks or vibrations or attempt to handle them in any way differently to that indicated in the manual. Do not under any circumstances exceed the specifications and limitations indicated in the manual. Respect the indicated environmental conditions for operation and storage at all times. During installation and on completion of this, avoid the presence of loose, broken or unprotected cables or cables in poor condition. These may constitute a risk for the equipment and its users.
AKO Electromecánica reserves the right to make any modification to the documentation and the product without prior notification.
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5552H4402 Ed. 02

Versions and references

MODEL AKO-555244 AKO-55326 AKO-55327
AKO-575400
AKO-575400N
AKO-575400NE
AKO-575744 AKO-575744N AKO-575744NR
AKO-57613 AKO-57614 AKO-58120 AKO-58110 AKO-58010

DESCRIPTION
Alarm centre for detectors / transmitters / trapped person pushbuttons / extraction pushbuttons
Trapped person luminous pushbutton
Extraction luminous pushbutton
Universal transmitter R-23 / R-32 / R-125 / R-134a / R-404A / R-407A / R-407F /
R-410A / R-448A / R-449A / R-452A / R-455A / R-513A *(R-450A / R-442A / R-454A / R-454c / R-1234yf / R-1234ze)
Universal transmitter with NBIoT communication R-23 / R-32 / R-125 / R-134a / R-404A / R-407A / R-407F /
R-410A / R-448A / R-449A / R-452A / R-455A / R-513A *(R-450A / R-442A / R-454A / R-454c / R-1234yf / R-1234ze)
Universal transmitter with NBIoT communication and external antenna
R-23 / R-32 / R-125 / R-134a / R-404A / R-407A / R-407F / R-410A / R-448A / R-449A / R-452A / R-455A / R-513A
*(R-450A / R-442A / R-454A / R-454c / R-1234yf / R-1234ze)
R-744 (CO2) gas transmitter R-744 (CO2) gas transmitter with NBIoT communication R-744 (CO2) gas transmitter with NBIoT communication
(Includes external adapter from 230 Vac to 15 Vcc)
R-717 (NH3 / ammonia)
R-134a, R-22, R-404A, R-407A, R-407C, R-407F, R-409A, R-408A, R-410A, R-422A, R-422D, R-424A, R-434A, R-442A, R-448A, R-449A,
R-450A, R-452A, R-453A, R-507A, R-513A
Protector for pushbutton / detector
Calibration tool
Optional battery*

POWER SUPPLY 90 - 240 V~ 50/60 Hz -
12-30 Vdc
-

AKO-58120

AKO-58110

AKO-58010

*If installing the trapped person in cold room store pushbutton, it's essential to install the optional AKO58010 battery to meet EN-378-1:2016 and RSIF (RD552:2019) standards.

5552H4402 Ed. 02
Cautions
-If the device is used without following the manufacturer's instructions, it may fail to meet its safety requirements. Only probes supplied by AKO must be used for the unit to operate correctly.
-From -40 °C to +20 °C, if the NTC sensor is extended to 1000 m with at least a 0.5 mm2 cable, the maximum deviation will be 0.25 °C (cable for sensor extension ref. AKO-15586. Earth the cable mesh at one end only). -Only NTC probes supplied by AKO should be used for the appliance to operate correctly. -The product 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. -For the reading to be correct, the sensor should be used in a place without heat influences apart from the temperature you want to measure or control. - The IP65 protection degree is only valid with the protection cover closed. - The IP65 protection degree is only valid if the cables enter the device using a tube for electric conductions + gland with IP65 or above. The gland should be the right size for the diameter of the tube used. -Do not spray the unit directly with high-pressure hoses, as this could damage it. -The centre should be installed in a monitored area, where it is guaranteed that people able to alert to the presence of alarms will be present. -Neither the alarm nor the gas transmitter / detector are suitable for areas classified as potentially explosive. -Transmitters / detectors monitor 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. -Transmitters / detectors measure gas concentration at a given point. If the gas leak does not reach the transmitter / detector, the alarm will not be activated. -Transmitters / detectors cannot supervise areas. If perimeter supervision is required, several transmitters / detectors should be installed surrounding the area to be supervised. -Thoroughly studying transmitters' / detectors' location is recommended, bearing in mind the areas most vulnerable to suffering leaks, the type of gas used, the size and shape of the room, air flows, maintenance work, etc. Working conditions: -Avoid handling refrigerant gases near the transmitter / detector. -Do not paint the transmitter / detector or place it near solvents or paints. -Exposure to acetone vapours may generate false alarms. The transmitter / detector 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.
Maintenance
Clean the surface of the unit with a soft cloth, water and soap. Do not use abrasive detergents, petrol, alcohol or solvents, as this might damage the unit.
The EN-378 and F-GAS international standards require that correct transmitter / detector functioning be checked at least once per year. Review what current local regulations specify for these cases. Consult the appropriate verification method in the transmitter / detector manual. Always ensure that you comply with current local regulations.
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Description

5552H4402 Ed. 02

SECURE
4

1: Visual alarm

2: Audible alarm

3: Display

4: Keypad

Constant green: Trapped person pushbutton connected. Quick-flashing red: Malfunction / wiring fault in pushbutton. Slow-flashing red: Pushbutton not detected or disconnected. Constant red: Trapped person alarm active.
Constant green: Gas transmitter / detector connected. Flashing green: Gas pre-alarm / alarm saved. Quick-flashing red: Malfunction / Wiring fault in transmitter / detector. Slow-flashing red: Transmitter / detector not detected or disconnected. Constant red: Gas pre-alarm / alarm active. Flashing red: Gas alarm disabled for battery work.
Scheduled ventilation cycle active.

Steady: Ventilation is activated through programming or forced. Blinking: Ventilation should be active according to programming, but its stop has been forced. Constant green: One of the digital inputs has been configured as an open door alarm. Flashing red: Open cold room door alarm.
Gas alarm muted.
Temperature indicated in degrees Celsius.
Steady: Set Hold mode active. Blinking: Maintenance mode active.
Battery connected.

Toggle ventilation on / off.
Pressing for 3 seconds activates / deactivates Set Hold function. Pressing for 6 seconds activates / deactivates Maintenance mode. Pressing for 3 seconds activates / deactivates scheduled ventilation cycle.

Pressing for 6 seconds accesses the programming menu.
For gas alarm, pressing briefly silences the alarm tone. Trapped person alarms cannot be silenced. Pressing for 1 second clears saved gas alarms. Pressing for 3 seconds reactivates short-circuited inputs (in error state).

Installation

5552H4402 Ed. 02

1 2
Ø Max. 20 mm
3
6
7
*
4
Ø Max. 25 mm
- Remove the bezels (1) - Make a 1/4 turn of the screws (2) anti-clockwise and open the door (3). - Install the necessary glands (4 / 5) by drilling holes in the points indicated on the box. - Mark and make the holes in the wall with the aid of the template included. - Fix the device to the wall. If it is a brick wall, use the screws and plugs supplied; if the wall is made of sheet metal (cold room store), use the screws provided without plugs (6). -If installing the optional AKO-58010 battery, connect it as shown in the figure (7) - Wire the device by following the recommendations indicated on pagepage 14. - Close the cover (3), tighten the screws (2) and replace the bezels (1).
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5552H4402 Ed. 02

Wiring
Always disconnect the power supply to do the wiring. The probes and their cables must NEVER be installed in a conduit together with power, control or power supply cables. For disconnection, the power supply circuit must be equipped with at least a 2 A, 230 V switch, located near the device. The power supply cable shall be of the H05VV-F or NYM 1x16/3 type. The section to be used will depend on current local regulations, but should never be less than 1.5 mm2. Cables for relay or contactor outputs should have a section of 2.5 mm2, allow working temperatures equal to or over 70ºC, and be installed with as little bending as possible. The 120 / 230 V~ wiring area must be kept clear of any other external element. The wiring to be undertaken depends on the options selected in the initial configuration wizard (See page 15). Check the enclosed schematic and the defined configuration before wiring.

Vac

100 - 240 V~ 50/60 Hz
A
RS485

Input x AKO-55327 extraction pushbutton H.E. pushbutton AKO-55326

Tr+ TrGnd S1 S1G DI1 Mute Gnd DI2 Sethold
15V In Gnd

15V In Gnd 15V In Gnd 15V In Gnd 15V In Gnd
15V In Gnd

Remote Mute

Remote Set Hold

B Input 1 Input 2 Input 3 Input 4

Input x

C
NC C NONC C NONC C NO

RY1

RY2

RY3

15V Out
Gas transmitter / detector AKO-575xxx / AKO-5761x
15V S GND

5552H4402 Ed. 02

Initial configuration (wizard)
The first time the unit receives the power supply, it will enter into ASSISTANT mode. The display will show the message In{ flashing at 0.
The pushbuttons / detectors / transmitters / probes should be connected before initiating the process, otherwise, they will not be detected.

SECURE

Step 1: Select the most suitable InI option based on the type of installation to be carried out and press SET. The available options will be shown in the following table:

InI

Installation location

Trapped person pushbutton input

Gas detector / transmitter input

Forced ventilation Temperature pushbutton input alarms

Demo mode, only displays temperature on the screen

Machine room

Yes

Cold room store

Yes

Open door alarm
No Yes

Step 2: The display shows the message dFp (default parameters) with two options to choose from:
0: Only change the parameters which affect the wizard. The other parameters will remain the same.
1: All parameters return to their factory setting except those which have been modified by the wizard.
Press SET to accept the changes.

SECURE

Step 3:

The input auto-detection process begins; the display sequentially lights up all inputs in green while detection takes place.

After a few seconds, the auto-detection concludes with 5 short beeps and the device restarts, entering normal

operation.

The configuration wizard will not reactivate. To reactivate it, switch off the power supply, switch
it on again and, within 2 minutes, press the following keys in this order (one after the other, not at the same time) N, Q, SET.

5552H4402 Ed. 02

Operation

Messages

Probe 1 faulty (Open circuit, crossed circuit or temperature outside the limits of the probe).

Maximum temperature alarm in probe 1. The temperature value programmed in A1 has been reached.

Minimum temperature alarm in probe 1. The temperature value programmed in A2 has been reached.

Gas pre-alarm active.

Gas alarm active. Trapped person alarm active. Open door alarm active. Probe disabled by parameter I00.

Relay management
Relay RY1 InI= 1 Machine room: Activated (A) and deactivated (B) based on ventilation cycles (Parameters U1 and U2)
InI=2 Cold room: Activated (A) in case of gas pre-alarm or alarm in any of the gas detectors / transmitters.
Relay RY2 Cold stop, activated (A) in case of gas alarm, stopping the cooling regulation of the cold room or the centre.
Relay RY3 CMS (Central Monitoring Station) Remote alarm, operates inversely, deactivating (B) in case of:
· Gas pre-alarm · Gas alarm · Ventilation pushbutton error (If InI=1) · Trapped person alarm (If InI=2) · Maximum temperature alarm (If InI=2) · Minimum temperature alarm (If InI=2) · Open door alarm (If InI=2) · Ventilation pushbutton error (If InI=1) · Trapped person pushbutton error (If InI=1) · Gas detector / transmitter error · Error in probe 1 If none of these alarms is active, the relay will be activated (A).

A NC C NO
B NC C NO

Operation in machine room mode (InI=1)

B A

SECURE

5552H4402 Ed. 02

C.R.A.

Extractor fan (C) Controlled by relay RY1, it automatically activates and deactivates according to the programmed times in parameters U1 and U2 (Scheduled ventilation cycle). If necessary, its activation or stop can be forced by pressing the AKO-55327 pushbutton (B) for more than 1 second.
Gas leak detection (A) If one of the connected detectors / transmitters (A) detects a gas leak (pre-alarm or alarm), the station's visual and acoustic alarm activates, and relay RY3 (D) switches to state B, (See page 16) activating forced ventilation (RY1). Only in the case of a gas alarm (not pre-alarm), relay RY2 is activated, sending a signal to the cold room's controller (E) to stop cold production.
Temperature display The display shows the temperature of probe S1 (See page 14).
Ventilation activation due to high temperature If the temperature in probe S1 exceeds the value configured in parameter A0, after the delay programmed in parameter A5, forced ventilation (RY1) is activated and relay RY3 (D) switches to state B (See page 16).
Maximum temperature alarm If the temperature in probe 1 exceeds the value configured in parameter A1, the maximum temperature alarm (AH) is activated. The maximum temperature alarm activates the station's visual and acoustic alarm once the delay programmed in parameter A5 has passed, and relay RY3 (D) remains in state B (See page 16).
Input errors In case of an error in any of the inputs (pushbutton, detector, transmitter or temperature probe), the corresponding indicator activates (see page 13 and page 16) and relay RY3 (D) switches to state B (See page 16).

Operation in cold room mode (InI=2)

SECURE

5552H4402 Ed. 02

GAS
C.R.A.

Gas leak detection (A) If one of the connected detectors / transmitters (A) detects a gas leak (pre-alarm or alarm), the station's visual and acoustic alarm activates, relay RY3 (F) switches to state B (See page 16) and relay RY1 (E) is activated. Only in the case of a gas alarm (not pre-alarm), relay RY2 is activated, sending a signal to the cold room's controller (G) to stop cold production.
Trapped person alarm (B) If one of the trapped person pushbuttons AKO-55326 (B) is pressed, the station's visual and acoustic alarm activates, and relay RY3 (F) switches to state B (See page 16).
Temperature display
The display shows the temperature of probe S1 (See page 14).
Temperature alarms If the temperature surpasses the set value in parameter A1, the maximum temperature alarm (AH) is activated. If the temperature falls below the configured value in parameter A2, the minimum temperature alarm (AL) is activated. Both alarms initiate the visual and acoustic alarm in the station after the programmed delay in parameter A5, causing relay RY3 (F) to switch to state B ((See page 16).
Open door alarm Upon detecting the opening of the cold room door (C), indicator D changes from green to red. If it remains open for a duration exceeding the defined time in parameter A12, the station's visual and acoustic alarm activates, and relay RY3 (F) switches to state B (See page 16). This requires configuring one of the inputs (DI1 or DI2) as a door contact (I50 or I60 = 4).
Input errors In the event of an error in any of the inputs (pushbutton, detector, transmitter or temperature probe), relay RY3 (F) switches to state B (See page 16).
Operation in the event of power failure In the event of a power failure, with the optional battery AKO-58010 installed, the station only maintains the functionality of the trapped person alarm active (InI=2).
*When installing the trapped person pushbutton in negative-pressure cold rooms, it's necessary to install the optional battery AKO-58010 to comply with the EN-378-1:2016 standard.

5552H4402 Ed. 02

Programming the ventilation cycle Ventilation cycles allow you to establish periods during which the fans are active. The programming is defined by parameters U1 (fan OFF time) and U2 (fan ON time). If U2 is set to "0", the programming never starts.
Set Hold mode Prevents false alarms when charging or cleaning the chambers. While this mode is activated, pre-alarms will not signal and alarms will signal as pre-alarms when faced with all effects (sound, relay activation and signalling). To activate/deactivate this mode, press the key for 3 seconds. The display will show the indicator. You may also activate/deactivate this function remotely using digital input 2 (DI2) if required. This mode will remain active for a maximum of 5 hours, then will deactivate automatically.
If this mode is activated using the key, it can only be deactivated using the same key. This is also true when activating the mode using digital input 2.

Maintenance mode Disables gas pre-alarms and alarms for 1 hour for maintenance tasks. While this mode is activated, no gas pre-alarm or alarm will sound.
To activate/deactivate this mode, press the key for 6 seconds. The

indicator will flash.

If there is a sudden increase in temperature near the transmitter, either in the cold room loading process, or because the door has been accidentally left open, there is a risk of condensation occurring inside the transmitter. In these conditions, the maintenance mode temporarily activates to avoid false alarms. The transmitter returns to normal operation after 3 to 15 minutes. In these cases, the maintenance mode cannot be manually deactivated.

5552H4402 Ed. 02

Programming menu
Use the extended programming menu to configure all of the unit's parameters in order to adapt it to your installation requirements. Press the SET key for 6 seconds to access it.
IMPORTANT: If the password function has been configured as a keypad lock (b10=2), or as an access to parameters block (b10=1), you will be requested to enter the password programmed in PAS when attempting to access either of the two functions. If the entered password is not correct, the unit will go back to showing the temperature.
IMPORTANT: Certain parameters or menus may not be visible depending on the configuration of the other parameters and the options chosen during set-up.

Save changes
Do not save changes

OUT OF PROGRAMMING
20 s
Start

Level 1 Menus

20 s OK

IN PROGRAMMING

Level 2 Parameters

Level 3 Values

6 s Change menus

Change parameters

Change value
OK

20 s
OK OK

Parameters Alarm control

Level 2

Level 1

Description A0 Ventilation for excessive temperature A1 Maximum in probe 1 alarm A2 Minimum in probe 1 alarm A3 Start-up delay for alarms A0, A1 and A2 A5 Delay for Alarms A0, A1 and A2 after reaching the programmed value A10 Differential of temperature alarms (A0, A1 and A2) A12 Delay to open door alarm A13 Enable pre-alarm: 0=Disabled; 1=Enabled EP Output to level 1
Ventilation cycle

Level 2

Level 1 FAn

U1 Fan OFF time U2 Fan ON time (0=disabled) EP Output to level 1
Basic configuration

Description

Level 2

Level 1

bcn

Description

b10

Password function 0=Inactive 1=Parameter access lock

2=Keypad lock

PAS Password

b20 MODBUS address

b21

Communication speed: 0=9600 bps

1=19200 bps

2=38400 bps

3=57600 bps

Unt Working units

0=Whole numbers; 1= 1 decimal

EP Output to level 1

** Indicated on the device label.

5552H4402 Ed. 02
Values Min. Def. Max. ºC -50.0 40.0 A1 ºC A2 37 99.9 ºC -50.0 -50.0 A1
min. 0 0 120 min. 0 30 99 ºC 0.1 1 2.0 min. 0 5 99
011
Values Min. Def. Max. min. 1 7 255 min. 0 3 255
Values Min. Def. Max. 002 0 0 99 1 ** 247 003 011

Inputs / outputs

Level 2

Level 1

InO

Description

I00 Type of probe: 0: Not connected; 1: NTC; 2: PT1000

I01 Differential of Probe 1

Configuration of digital input 1: 0=Disabled; I50 1=Remote Gas Pre-Alarm; 2=Remote Gas Alarm;
3=Remote Set-Hold; 4=Door Contact

I51

Polarity of digital input 1 0=Activates on closing contact; 1=Activates on opening contact

Configuration of digital input 2: 0=Disabled; I60 1=Remote Gas Pre-Alarm; 2=Remote Gas Alarm;
3=Remote Set-Hold; 4=Door Contact

I61

Polarity of digital input 2 0=Activates on closing contact; 1=Activates on opening contact

EP Output to level 1

Information (read-only)

Level 2

Level 1

Description

InI

Option chosen in the configuration wizard 0= Demo mode; 1= Machine room; 2= Cold room

PU Program version

Pr Program revision

PSr Program subrevision

EP Output to level 1

tid

*The maximum value depends on the option selected in the wizard. **Defined in the configuration wizard.

5552H4402 Ed. 02
Values Min. Def. Max. 012
ºC -5.0 0.0 5.0 00* 001 00* 001
Values Min. Def. Max. 0*2
ºC -5.0 0.0 5.0 004 001

5552H4402 Ed. 02
Technical specifications
Power supply.................................................................................................................... 100 - 240 V ~ 50/60 Hz Maximum input power ................................................................................................................................. 3.1 W Relays .....................................................................................................................................SPDT 8(2) A 250 V~ No. of relay operations ..........................................................................................EN 60730-1:100000 operations Temperature probe range (NTC/Pt1000)....................................................................................-50.0 ºC to 99.9 ºC Resolution, adjustment and differential........................................................................................................ 0.1 ºC Thermometric accuracy ..............................................................................................................................±0.5 ºC Input for NTC probe ............................................................................................................................ AKO-14901 Working ambient temperature ......................................................................................-5 ºC to 50 ºC (H.R.: 90%) Ambient storage temperature ......................................................................................-30 ºC to 60 ºC (H.R.: 90%) Protection degree ......................................................................................................................................... IP 65 Installation category.............................................................................................................. II as per EN 61010-1 Degree of pollution ............................................................................................................... II as per EN 61010-1 Sound power...........................................................................................................................90 dB(A) at 1 metre Accumulators ................................................................................................................................... Ni-MH 1.6 Ah Lighting + alarm autonomy ...............................................................................................................> 10 Hours * MODBUS address................................................................................................................. Indicated on the label Maximum cable distance for pushbutton / detector / transmitter .................................................................. 300 m Double isolation between power supply, secondary circuit and relay output. Dimensions ........................................................................................... 290 mm (W) x 141 mm (H) x 84.4 mm (D) Probe extensions: ** NTC ..................................................................... Extendable up to 100 metres with AKO-15586H extension cable PTC...................................................................... Extendable up to 100 metres with AKO-15586H extension cable PT1000.................................................................. Extendable up to 30 metres with AKO-15586H extension cable 4-20mA ............................................................... Extendable up to 200 metres with AKO-15586H extension cable 0.54.5V ............................................................. Extendable up to 100 metres with AKO-15586H extension cable 010V ................................................................. Extendable up to 100 metres with AKO-15586H extension cable *Duration in alarm status at an ambient temperature of between 25 ºC. ** The AKO-15586H extension cable has an impedance of maximum cable distance 0.0172 Ohms* mm2/m
16

3555524402 Rev. 01 2024

AKO ELECTROMECÁNICA, S.A. 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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