AKO-D14545 5 Stage Compressor Racks Converter Outputs User Manual
- September 19, 2024
- AKO
Table of Contents
AKO-D14545 5 Stage Compressor Racks Converter Outputs
AKO Electromecánica thanks and congratulates you for purchasing our product, in whose development and manufacture the most innovative technology has been used, as well as strict production and quality control processes. Our commitment to satisfy our customers and our continuous efforts to improve every day can be seen in the various quality certifications we have obtained. This is a high performance, high technology product. The operation and final performance of the equipment depend on proper planning, installation, configuration and commissioning. Read this manual carefully before installation, and always follow its instructions.
Only qualified personnel should install or perform technical assistance on this product. This product is designed to be used in the applications described in the product manual. AKO Electromecánica gives no guarantee of its operation in any use not foreseen in the manual, and is not responsible for any damage resulting from improper use, configuration, installation or commissioning. It is the responsibility of the installer and the customer to comply with and ensure others comply with all regulations applicable to installations incorporating our products. AKO Electromecánica is not responsible for any damage caused by non-compliance with regulations. Follow strictly the instructions given in this manual. To maximise the service life of our equipment, these recommendations should be followed: Do not expose electronic equipment to dust, dirt, water, rain, humidity, high temperatures, chemicals or corrosive substances of any sort. Do not submit the equipment to blows or vibrations nor try to manipulate it differently from shown in the manual. Never exceed the specifications and limitations indicated in the manual. Always respect the specified ambient working and storage conditions. During and after installation, avoid leaving loose, broken, unprotected or damaged wiring, since they might constitute a risk for the equipment and its users. AKO Electromecánica reserves the right to make any non-metrology modification to the documentation or the equipment without previous notice.
Precautions
- Using the equipment without following the manufacturer’s instructions may affect the device’s safety requirements.
- The unit must be installed in a location protected from vibrations, water and corrosive gases, where the ambient temperature does not exceed that shown in the technical data.
- To ensure a correct reading, the probe must bWe located away from external effects.
- The power supply circuit must be provided with a main switch rated at least 2 A, 230 V, located close to the equipment. The cables will enter through the back and should be type H05VV-F or H05V-K.
- The gauge will depend on local regulations, but should in no case be less than 1 mm².
- The wiring cables for the contact relays must have a section of 2.5 mm2.
Versions and part numbers
MODELS| POWER SUPPLY| PROBES (2+1)| DIGITAL
INPUTS| ANALOGUE OUTPUTS| RELAYS| COMMUNICATION
---|---|---|---|---|---|---
AKO-D14545|
90-240 V
| 0.5 -4.5 V /
4-20 mA / NTC /
+ 1 x NTC
|
Up to 6
| 2 x 0-10 V /
4-20 mA
(inverter controls)
|
5
| NO
AKO-D14545-C| YES
Description
Keypad functions
In the programming menu, exit without saving parameter, return to previous level or exit programming.
By pressing this key for 1 second the probe display units change (according to parameter C09). Pressing for 10 seconds goes to the programming menu. In the programming menu, go to the level displayed or accept the new value while setting a parameter.
By pressing this key for 1 second probe 2 is displayed for 5 seconds (or probe 1, according to parameter P02). By pressing a second time the probe ambient temperature value will be shown (only if I07 or I08=3). In the programming menu, allows you to scroll through the various levels or, during the setting of a parameter, to change the value.
Pressing this key returns the unit to its standard operation after an alarm which requires a reset (the causes which triggered the alarm must have disappeared). In programming menu, allows you to scroll through the various levels or, during the setting of a parameter, to change the value.
Display messages
Initial setup
The unit has a wizard that configures the unit’s parameters and assigns the input and output functions according to the installation type chosen. When connecting the power supply for the first time, the Configuration Wizard will start, displaying the message INI on screen. Follow the 4 steps detailed below and the unit will be ready to operate:
In order to start the wizard again, disconnect the unit’s power supply, reconnect it and, during the subsequent 8 seconds, press the key sequence , , SET.
“WIZARD” table description
The “WIZARD” annex table is divided into 3 groups of columns. The first group
describes the different types of installation (no. of compressors and fans,
whether they have a converter, etc.) associated to their INI option.
Installation
The second group specifies the function assigned to each relay depending on the INI option selected.
The third group specifies the function assigned to each digital input depending on the INI option selected.
Legend
- x : Compressor or fan no.
- a , b , c : Compressor stages
“WIZARD” table
Wiring
The function of each relay output or digital input depends on the option chosen in the INI wizard (See page 5).
Compressors control
Proportional mode
WITHOUT FREQUENCY CONVERTER
The controller activates (red line) or deactivates (green line) the different
stages/compressors available in a linear manner depending on the reading
obtained in probe 1 until the Set Point (E01) is reached again, as shown in
the following figure
n : Number of stages/compressors available
WITH FREQUENCY CONVERTER
If there is a frequency converter, the frequency converter modulates the power
of compressor 1 between 0 and 100% (blue zone). If demand increases, the
following compressor or stage (without converter) is added, again modulating
the power of compressor 1 using the converter, and so on. This method allows
modulating the total power available using just one frequency converter.
- n : Number of stages/compressors available
- In both cases, the delays t01 to t04 must be accounted for.
Neutral zone mode
WITHOUT FREQUENCY CONVERTER
In this mode, a neutral zone is defined, whose lower limit is the Set Point
minus the bandwidth, and whose upper limit is the Set Point plus the
bandwidth. While the reading of probe 1 remains in that zone, no stages or
compressors are connected or disconnected.
If the upper limit is exceeded, the controller activates the different stages/compressors separated by the interval defined in parameter t03 (red line) until returning to the neutral zone. If the lower limit is exceeded, the controller deactivates the different stages/compressors separated by the interval defined in parameter t04 (green line) until returning to the neutral zone.
In order to deactivate a stage/compressor, the interval t01 must have passed, and interval t02 defines the minimum interval between starts of the same stage/compressor.
WITH FREQUENCY CONVERTER
Operation is the same as in the previous point, but modulating the power of
compressor 1 with the converter while it remains in the neutral zone using a
PID control. Near the upper limit, the compressor operates at its maximum
capacity, and if said limit is exceeded, more stages/ compressors are added,
in accordance with the interval defined in t02, until returning to the neutral
zone. To avoid delays in the reaction of the installation, t02 time is halved
in the compressor equipped with an inverter. Near the lower limit, the
compressor operates at its minimum capacity, and if said limit is exceeded, it
stops. The rest of the stages/compressors will stop, in accordance with the
interval programmed in t01, until re-entering the neutral zone, upon which
compressor 1 activates again at its minimum capacity.
Pump Down
It is only available if the type of operation is direct (C07=0). When the
pressure reaches the Set Point value (E01) in probe 1, the last
stage/compressor remaining in operation does not stop; it continues to reduce
the pressure until reaching the value configured in parameter E08. In the
event of a failure, if the value of E08 is not reached, the controller will
stop the compressor once the security interval defined in E09 has passed,
displaying the message “PdA” (an informative message that does not affect the
unit’s operation). For this function to be active, the parameter E08 must be
configured below the Set Point (E01).
Fan control
Proportional mode
WITHOUT FREQUENCY CONVERTER
The controller activates (red line) or deactivates (green line) the different
fans available in a linear manner depending on the reading obtained in probe 2
until the Set Point (E01) is reached again, as shown in the following figure.
The delays t05 to t08 must be accounted for.
WITH FREQUENCY CONVERTER
If there is a frequency converter, the frequency converter modulates the power
of the fans between 0 and 100%.
Neutral zone mode
WITHOUT FREQUENCY CONVERTER
In this mode, a neutral zone is defined, whose lower limit is the Set Point
minus the bandwidth, and whose upper limit is the Set Point plus the
bandwidth. While the reading of probe 2 remains in that zone, no fans are
connected or disconnected.
If the upper limit is exceeded, the controller activates the different fans separated by the interval defined in parameter t07 (red line) until returning to the neutral zone. If the lower limit is exceeded, the controller deactivates the different fans separated by the interval defined in parameter t08 (green line) until returning to the neutral zone.
In order to deactivate a fan, the interval t05 must have passed, and interval t06 defines the minimum interval between starts of the same stage/compressor.
WITH FREQUENCY CONVERTER
Operation is the same as in the previous point, but modulating the power of
the fans with the converter while it remains in the neutral zone using a PID
control. Near the upper limit, the fans operate at their maximum capacity, and
if said limit is exceeded, the capacity is kept at its maximum until returning
to the neutral zone. Near the lower limit, the fans operate at their minimum
capacity, and if said limit is exceeded, they stop until returning to the
neutral zone, upon which they activate again at their minimum capacity.
Floating condensation
The controller modulates the evaporation Set Point taking into account the
ambient temperature (requiring connecting probe 3) and the power of the
compressors. This type of control improves the COP (the relationship between
cooling power and consumed electrical energy) and hence increases the energy
performance of the installation. This mode is only valid if the fans of the
condenser are controlled, with or without a frequency converter.
Alarms
IMPORTANT : The alarms that cause compressors and fans to stop will do so in a sequential manner, with a delay of 5 seconds between stops.
LOW AND HIGH PRESSURE ALARM DUE TO DIGITAL INPUT
When the digital input I5 or I6 is activated, the message HPA (High) or LPA
(Low) is shown on screen, the alarm relay is activated (if available) and the
compressors are stopped. If the alarm is due to low pressure, the fans stop;
if it is due to high pressure, the fans activate regardless of parameter F07.
If the cause that triggered the alarm disappears, the installation returns to
its standard operation. Parameter A09 defines the number of high-pressure
alarms allowed per hour. If this value is exceeded, the unit must be manually
reset by pressing the key in order for it to return to its standard operation,
once the cause that triggered the alarm has disappeared. This requires the
parameters I07 or I08 to be set to 0 or 1. When the readings return to their
normal values, the alarm relay deactivates but the BELL indicator remains
on until the key is pressed. LOW AND HIGH PRESSURE ALARM DUE TO PROBES 1 AND
2
If the reading in probe 1 reaches the value set for parameter A03, the message
ALL (Low pressure) is displayed on screen, the alarm relay (if available) is
activated and the compressors and fans stop. This alarm differential is
established in parameter A04. If the reading in probe 1 reaches the value set
for parameter A05, the message ALH (High pressure) is displayed on screen,the
alarm relay (if available) is activated and the compressors and fans stop.
This alarm differential is established in parameter A06. When the readings
return to their normal values, the alarm relay deactivates but the BELL
indicator remains on until the key is pressed.
PROTECTION ALARMS
If one of the thermal protections goes off (digital inputs I1 to I5, according
to the configuration), the message At1 … is displayed on screen At5, the
associated element (compressor or fan) stops and the alarm relay activates (if
available). Once the protection is reset, the installation returns to its
standard operation, but the alarm relay remains activated until the key is
pressed.
SEVERE EXTERNAL ALARM
When the digital input configured as a severe external alarm (I07 or I08=4) is
activated, the screen displays the message AES, the compressors and fans stop
and the alarm relay activates. Once the cause that triggered the alarm
disappears, the installation returns to its standard operation, but the
BELL indicator remains activated until the key is pressed.
PROBE 1, 2 or 3 ERROR
If an error occurs in probes 1, 2 or 3 (disconnection, cross-over or probe out
of range), the screen displays the messages E1, E2 or E3 respectively, the
alarm relay activates and the compressors and fans go on to operate according
to parameters A01 and A02. Once the cause that triggered the alarm disappears,
the installation returns to its standard operation, but the BELL indicator
remains activated until the key is pressed.
PUMP DOWN ALARM STOPPED DUE TO TIME
If, during pump down, the maximum interval configured in E09 passes before
the stop value specified by E08 is reached, the last stage will stop and the
message PdA will be displayed. Does not activate the alarm relay.
Alarm delay
These delays prevent the display of specific alarms while allowing the unit to
recover normal operation after certain events.
- Delays in start-up (A08): Delays the activation of the alarms upon receiving power supply (start-up or after a fault in the power supply). This allows starting up the installation avoiding constant alarm statuses.
- Alarm delay (A07): It delays the activation of the high and low pressure alarms (A03 and A05) from the time that the programmed values are reached.
- Turn-on delay time of alarms due to digital input 5 (I09): It delays the activation of activated alarms due to digital input 5. The type of alarm to be activated depends on the configuration of parameter I07. It does not take effect if parameter I07 is set to 2 (Thermal alarm).
- Turn-on delay time of alarms due to digital input 6 (I10): It delays the activation of activated alarms due to digital input 6. The type of alarm to be activated depends on the configuration of parameter I08. It does not take effect if parameter I08 is set to 2 (Thermal alarm).
Remote disconnection
This function allows stopping / starting regulation with an external signal
via the digital input 5 or 6. The digital input 5 or 6 must be configured as a
remote disconnection (I07 or I08=5). When stopping or starting regulation, the
compressors / stages and fans will stop or start in accordance with the
timings set in parameters t01 to t08.
Connectivity
The AKO-D14545-C model has a port for RS485 (MODBUS) data connection, which
enables remote management via the AKO XaviP Edge gateway and the akonet.cloud
platform. A different address must be assigned to each unit on the same
network. This address is defined by parameter b20.
Parameter setup
Through the programming menu users can set different parameters to adjust the operation of the controller to the needs of their installation.
Programming Menu
It allows changing the unit’s operating parameters. To access the programming
menu, press the SET button for 10 seconds, or until the “PRG” appears on the
screen.
IMPORTANT : If the password function has been configured, the system will
demand entering the password programmed in L5. If the entered password is not
correct, the unit will go back to showing the temperature. After 20 seconds
with no key being pressed, the equipment will return to the previous level. If
you are on level 3, the changes will not be saved.
Parameters
The unit’s operation parameters are organized into groups or families according to their function. The Def. column shows factory-set default parameters. The pressure values featured on the table are expressed in bar and those for temperature in ºC. If the wizard meanwhile selects another set of units (parameter C09), the unit will make the conversion automatically.
IMPORTANT : C01, C02, C04, C05, C06, C08 and C09 are read-only parameters, editable using the INI wizard only.
Level 1.- INSTALLATION CONFIGURATION
Level 1.- EVAPORATION CONFIGURATION
Depending on the compressor control type: Proportional=E01; Neutral zone=E01-E06.
Level 1.- CONDENSATION CONFIGURATION
Remark 1: The equivalent value in pressure is calculated depending on the refrigerant gas specified in the wizard.
Level 1.- DIGITAL INPUT CONFIGURATION
Remark 2 : In the event of the energy saving and the variation in the set point per digital input being activated at the same time, the variation in the set point per digital input will always prevail. If the compressor is equipped with an inverter, this period of time halves.
Level 1.- CONFIGURATION OF PROTECTIONS AND ALARMS
The number of stages depends on the configuration selected in the wizard.
Limits and default values of the pressure and temperature parameters
according to units.
The following table shows the default values and the limits of the pressure
and temperature parameters according to the display units defined by parameter
C09 during quick start (See page 5).
Depending on the compressor control type: Proportional=E01; Neutral zone=E01-E06.
Technical specifications
- Power supply……………………………………………………………………………………………………. 90-240 V~ 50/60 Hz 7VA
- Maximum voltage in the SELV circuits……………………………………………………………………………………………….. 20 V
- Inputs………………………………………………………………………………………………….. 2 analog inputs + 6 digital inputs
- Relays R1 to R4…………………………………………………………………………………….. (EN60730-1: 5(4) A 250 V~ SPST)
- Relay R5…………………………………………………………………………………………….. (EN60730-1: 5(4) A 250 V~ SPDT)
- No. of relay operations………………………………………………………………………………EN60730-1: 100.000 operations
- Types of probes………………………………………………………………………………………………………………NTC AKO-149xx
- …………………………………………………………………………………………………………………………………………… 4-20 mA
- ………………………………………………………………………………………………………………………………….0-5 V ratiometric
- Measuring range NTC…………………………………………………………………… -50,0 ºC a +99,9 ºC (-58,0 ºF a 211 ºF)
- 4-20 mA / 0.5 – 4.5 V…………………………………………………………………………………-60 to 999
- Resolution NTC…………………………………………………………………………………………………….. 0.1 ºC (0.1 ºF)
- 4-20 mA / 0.5 – 4.5 V -99.9 a 99.9………………………………………………………………………. 0.1
- ≤-100 / ≥ 100……………………………………………………………………..1
- Thermometric precision of the equipment (S1/S2) NTC…………………………………………………………………….± 1 ºC
- 4-20 mA……………………………………………………………….±1%
- 0.5 – 4.5 V……………………………………………………………± 1%
- Working environment…………………………………………………………………………………. -10 to 50 ºC, moisture <90 %
- Storage environment………………………………………………………………………………….. -30 to 70 ºC, moisture <90 %
- Protection degree of the front part……………………………………………………………………………………………………. IP65
- Fixing………………………………………………………………………………………………………….Panel mounting with anchors
- Panel cavity dimensions…………………………………………………………………………………………………………71 x 29 mm
- Front part dimensions……………………………………………………………………………………………………………79 x 38 mm
- Depth……………………………………………………………………………………………………………………………………… 61 mm
- Connections: ……………………………………………………..Terminal to screw for cables with a section of up to 2.5 mm2
Control device classification: Built-in assembly, with Type 1.B automatic operation action feature, for use in clean situations, logical support (Software) class A and continuous operation. Degree of contamination 2 acc. to UNE-EN 60730-1. Double power input insulation, secondary circuit and relay output.
- Rated pulse voltage……………………………………………………………………………………………………………………. 2500 V
- Pressure ball test temperature: Accessible parts………………………………………………………… 75 ºC
- Parts that position active elements……………………………… 125 ºC
- Voltage and current declared by the EMC tests:……………………………………………………………………….207 V, 17 mA
- Radio interference suppression test current…………………………………………………………………………………….270 mA
Dimensions
Mounting
AKO ELECTROMECÁNICA , S.A.
Avda. Roquetes, 30-38
08812 • Sant Pere de Ribes.
Barcelona • Spain
www.ako.com
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