AKO -D140 Series User manual

Thermometers and temperature controllers
User Manual
GB
D144H002 Ed.03

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 certifi-
cations we have obtained.
This is a high performance, high technology product. The operation and final performance of the equipment depend on proper plan-
ning, 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, configu-
ration, 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 re-
gulations. 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 sub-
stances 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 constitu-
te 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.
Contents Page
Chapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chapter 2: Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Keypad functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Display messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Versions and . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.5 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Chapter 3: Initial Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Wizard (not available in thermometers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Basic settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Chapter 4: Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Compressor control (not available thermometers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Defrost control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3 Fan control (only controllers with two or more relays) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4 Light control . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.5 Pump Down function (only four-relay controllers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.6 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Chapter 5: Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.1 Thermometers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.2 1-relay controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.3 .......................................................20
5.4 .......................................................20
5.5 .......................................................21
Chapter 6: Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Chapter 7: Parameter setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.1 Programming Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.1.1 Changing the set point (not available in thermometers). . . . . . . . . . . . . . . . . . 22
7.1.2 Changing the operating parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.1.3 Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8. Technical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
part numbers
in
(not available thermometers)
(only controllers with two or more relays)
2-relay controller
3-relay controller
4-relay controller
in
2

1.- Introduction
The Darwin controller range is particularly suitable for controlling refrigerating equipment, wall units, islands, cabi-
nets, electrical panels, etc.
The wide range of models available ensures the best solution for each application.
The small SLIM models have been developed for applications where little space is available for the controller.
STANDARD models are specifically designed for applications requiring a considerable number of output relays,
h
Information displayed on the high-brightness screen has been grouped according to functionality. A first large
display shows the temperature and operating messages. The second display shows icons for the various outputs.
The built-in gasket on the front panel (Only AKO-D14xxx models) afford the unit a high degree of IP protection and
new features have been added which allow more efficient refrigeration management, thus saving energy.
The menu settings are optimized for fast and intuitive programming and may be pre-programmed according to the
application for faster start-up.
Available Models
igh load switching power and various functions with keypad shortcuts.
EXTENDED FRAME models incorporate two switches for additional functions. Ideal for controlling the turning
on/off of the cabinet, lights, etc.
Application
AKO-D140xx
Thermometers. Ideal for applications where only the temperature needs to be shown.
AKO-D141xx
1-relay controllers designed to control positive services (above 3 ºC). Defrost by compressor
shutdown. Cold/Heat operation.
AKO-D142xx
2-relay controllers designed to control positive services (above 3 ºC). Defrost by air or
resistors.
AKO-D143xx
3-relay controllers designed to control positive services (above 3 ºC). Defrost by resistors
or cycle reversal.
AKO-D144xx
4-relay controllers designed to control positive or negative services. Defrost by resistors or
cycle reversal. Configurable auxiliary relay.
AKO-D101xx
1-rela to control positive
services (above 3 ºC). Defrost by compressor shutdown. Cold/Heat operation.
y extended frame controllers and two auxiliary switches, designed
AKO-D102xx
2-relay ed to control positive
services (above 3 ºC). Defrost by air or resistors.
extended frame controllers and two auxiliary switches, design
AKO-D103xx
3-relay extended frame controllers and tw ned to control positive
services (above 3 ºC). Defrost by resistors or cycle reversal.
o auxiliary switches, desig
3

SET
ESC
ECO relay
*active COOL relay active (P0=0)*
Standby
active
Keyboard
Fast freezing
mode* AUX relay active*
*Depending on model
Flashing lights indicate that the function in question should be activated by temperature, but is not due to a conflicting
timing or protection parameter.
RES relay active (P0=1) (P6=3)or lights on *
DEF relay energised*
Program
Mode
FAN relay *active
Display
2.1.- Keypad functions
Controllers
Only models with 4 keys
Press for 5 seconds to start/stop Fast Freezing mode
(rapid cooling).
In the programming menu, exit without saving parameter,
return to previous level or exit programming.
Press for 5 seconds, allows changing the set point (SP).
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.
Press for 5 seconds to start/stop Fast Freezing mode.
In the programming menu, allows you to scroll through
the various levels or, during the setting of a parameter, to
change the value.
Press for 5 seconds
m
, activates standby mode.
Pressing for two seconds, the device returns to normal.
In Standby mode, the equipment performs no actions and
only the indicator is displayed on the screen..
In programming menu, allows you to scroll through the
various levels or, during the setting of a parameter, to change
the value.
SET
ESC
IMPORTANT: If you have configured the access code function as a key lock (P2=2) when you initiate any function
(defrost, fast freezing, access to programming, etc.) you will be prompted to enter the access code programmed into
L5. If the code entered is not correct, the unit will display the temperature without opening the requested function.
2.- Description
Thermometers
SET
Press for 5 seconds to activate Standby mode; press for 2 seconds to return the equipment to normal mode. In
Standby mode, the equipment performs no actions and only the m indicator is displayed on the screen .
Press for 10 seconds to go to the programming menu.
Press for 5 seconds in the programming menu to access the level displayed on the screen or, during the setting of a
parameter, accepts the new value.
In the programming menu, a short press allows you to scroll through the various levels or, during the setting of a parameter, to
increment the value. When upper limit is reached, it will start again from the lower limit.
4
Switches
Extended panel version
1 Key 3 Keys 4 Keys
SET
SET SET
ESC

Flashing 0: Access code (Password) request
You must enter the access code configured on L5 to execute the requested
function (p. 9 and 22).
See also parameter P2 (p. 27)
Probe 1, 2 or 3 faulty
(open circuit, crossover or temperature outside the probe limits; NTC: -50
To 99 ºC; PTC: -50 To 150 ºC).
Indicates a defrost is underway. After defrosting, the message will continue
to be displayed during the time specified in parameter d3 (see Chapter 4.2).
Alternating with temperature:
Maximum temperature in control probe alarm. Temperature set in A1 has
been reached (p. 17 and 18)
(Activates alarm relay)
Alternating with temperature:
Minimum temperature in control probe alarm. Temperature set in A2 has
been reached (p. 17 and 18)
(Activates alarm relay)
Alternating with temperature:
(Activates alarm relay)
External alarm activated (by digital input) (p. 17 and 18)
Alternating with temperature:
(by digital input) (p. 17)
(Activates alarm relay)
Severe external alarm activated
Alternating with temperature:
Defrost alarm time-out. Displayed when a defrost ends after the maximum
time elapsed as defined in parameter d1. (p. 17)
(Does not activate alarm relay)
Alternating with temperature:
Door open alarm. Shown if the door remains open longer than specified in
parameter A12 (p. 17 and 18)
(Does not activate alarm relay)
Alternating with temperature:
Pump-down time-out alarm (p. 17)
(Does not activate alarm relay)
Alternating with temperature:
Clock battery discharged or clock deprogrammed
(Does not activate alarm relay)
2.2.- Display messages
5

2.3- Versions and part numbers
2.4.- Maintenance
Clean the surface of the alarm using a soft cloth, soap and water. Do not use abrasive detergents, petrol, alcohol or
solvents.
2.5.- Precautions
Using the equipment without following the manufacturer's instructions may affect the device's safety requirements.
To ensure that the device operates correctly, only probes supplied by AKO should be used.
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 get a correct reading, the probe must be situated in a location without any external heat influences except for
the temperature which is being measured or controlled.
The probe and its cable should NEVER be installed in the same conduit as power, control or supply cables.
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 regula-
tions, but should in no case be less than 1 mm².
The relay contact cables should be 1 to 2.5 mm² and the common cable should always be 2.5 mm².
Halogen-free cables are recommended.
Between -40 ºC and +20 ºC, if the NTC probe is extended up to 1,000 m with minimum 0.5 mm² wire, the maximum
deviation will be 0.25 ºC (Wire for probe extension ref. AKO-15586).
connecting
3
MODELS
POWER SUPPLY
PROBES
DIGITAL
INPUTS
FORMAT
NO. OF
KEYS
RELAYS
COMMUNICATION
RTC
ECO
MODE
AKO-D14012
12/24V
1 (NTC/PTC)
-
SLIM
1
0
NO
NO
NO
AKO-D14023
230V
1 (NTC/PTC)
-
SLIM
1
0
NO
NO
NO
AKO-D14023-C
90-260V 50/60Hz
1 (NTC/PTC)
-
STANDARD
1
0
YES
NO
NO
AKO-D14024
230V
1 (NTC/PTC)
-
SLIM
1
0
NO
NO
NO
AKO-D14112
12/24V
Up to 2 (NTC/PTC)
Up to 2
STANDARD
4
1
NO
NO
YES
AKO-D14120
120V
1 (NTC/PTC)
-
SLIM
3
1
NO
NO
NO
AKO-D14123
230V
1 (NTC/PTC)
-
SLIM
3
1
NO
NO
NO
AKO-D14123-2
230V
Up to 2 (NTC/PTC)
Up to 2
STANDARD
4
1
NO
NO
YES
AKO-D14123-2-RC
90-260V 50/60Hz
Up to2 (NTC/PTC)
Up to 2
STANDARD
4
1
YES
YES
YES
AKO-D14124
230V
1 (NTC/PTC)
-
SLIM
3
1
NO
NO
NO
AKO-D14125
230V
1 (NTC/PTC)
-
SLIM
3
1
NO
NO
NO
AKO-D14212
12V
Up to2 (NTC)
Up to 2
STANDARD
4
2
NO
NO
YES
AKO-D14220
120V
Up to 2 (NTC)
Up to 2
STANDARD
4
2
NO
NO
YES
AKO-D14223
230V
Up to2 (NTC)
Up to 2
STANDARD
4
2
NO
NO
YES
AKO-D14312
12V
Up to 2 (NTC)
Up to 2
STANDARD
4
3
NO
NO
YES
AKO-D14320
120V
Up to 2 (NTC)
Up to 2
STANDARD
4
3
NO
NO
YES
AKO-D14323
230V
Up to 2 (NTC)
Up to 2
STANDARD
4
3
NO
NO
YES
AKO-D14323-C
90-260V 50/60Hz
Up to 2 (NTC)
Up to 2
STANDARD
4
3
YES
NO
YES
AKO-D14412-RC
12V
Up to 3 (NTC)
Up to 3
STANDARD
4
4
YES
YES
YES
AKO-D14423-RC
90-260V 50/60Hz
Up to 3 (NTC)
Up to 3
STANDARD
4
4
YES
YES
YES
AKO-D10123
230V
1 (NTC/PTC)
-
EXTENDED PANEL
3
1
NO
NO
NO
AKO-D10223
230V
Up to 2 (NTC)
Up to 2
EXTENDED PANEL
4
2
NO
NO
YES
AKO-D10323
230V
Up to 2 (NTC)
Up to 2
EXTENDED PANEL
4
3
NO
NO
YES
6

3.- Initial Setup
3.1.- Wizard (not available in thermometers)
The Darwin range controllers have a setup wizard to configure the main parameters
for the type of application chosen (see table). The other parameters will be configured
according to the "Def" column in the parameter table (see section 7.1.3).
For the meaning of each parameter, see section 7.1.3.
This wizard starts the first time that the unit is powered up or at any time through the programming menu, through
P3 (see Section 7).
WARNING: The default parameters by type of application have been defined for the most common
applications. Check that these parameters are suitable for your installation.
*Parameters not available in 3-key controllers.
DEFAULT SETTINGS BY APPLICATION (P3)
1
Multi-
purpose
2
Frozen
3
Fruits and
vegetables
4
Fresh fish
5
Soft Drinks
6
Bottle Racks
7
AC
8
Heat/
Incubators
SP
2ºC
(36ºF)
-18ºC
(-0,4ºF)
10ºC
(50ºF)
0ºC
(32ºF)
3ºC
(37,4ºF)
12ºC
(53,6ºF)
21ºC
(69,8ºF)
37ºC
(38,6ºF)
d0
4
4
4
4
24
24
96
-
d1
20
20
20
20
20
20
0
-
F0*
8ºC
(46ºF)
0ºC
(32ºF)
30ºC
(86ºF)
8ºC
(46ºF)
8ºC
(46ºF)
30ºC
(86ºF)
99ºC
(210ºF)
-
F3*
1
0
1
1
1
1
1
-
P0
0
0
0
0
0
0
0
1
7

3.2.- Basic settings
Type of operation (only 1-relay controllers)
Specifies how the controller will control temperature (see page 10)
P0=0 Direct mode, refrigeration applications
P0=1 Reverse mode, heating applications
Type of inputs (only 4-key controllers)
Some units have 3 programmable inputs to function as probes or as digital inputs as needed. This configuration
parameter is defined by P4, with the following options:
P4=1: 1 probe input (S1: control probe) + 2 digital inputs (D1 and D2).
P4=2: 2 probe inputs (S1: Control probe and S2: Defrost probe) + 1 digital input (D1).
P4=3: 3 probe inputs (S1: Control probe, S2: Defrost probe and S3: second defrost probe or product temperature)
(Only available on 4-relay units).
Probe types (only available in thermometers and 1-relay controllers)
Parameter P9 permits selecting the type of probes to be connected between NTC (P9=0) and PTC (P9=1).
Probe function
S1: Temperature control probe, controls temperature of the chamber or cabinet (SP) acting on the COOL/RES relay.
S2*: Evaporator probe, controls the defrost end temperature (d4) and shuts down the fans (F0).
S3**: Second evaporator or product temperature probe, controls defrost end temperature (d4) of a second
evaporator. If second defrosting is not configured (P6¹1),
* (Only available in 4-key controllers and if P4=2 or 3)
** (Only available in 4-relay controllers and if P4=3)
Probe to display:
Parameter P8 defines which probe is displayed on the controller screen (P8=0 All probes sequentially, P8=1 Probe
1, P8=2 Probe 2 and P8=3 Probe 3).
In the sequential mode the screen will display the name of each probe followed by the temperature of each.
(S1 - 8,3ºC - S2 - 6,2ºC - S3 - 9,4ºC)
Calibrating probe 1
Allows correcting a possible error in probe reading. This can be very useful when you cannot place it in the ideal place.
Display mode
Parameter P7 sets the display mode for the temperature displayed on the screen (P7=0 No decimals in ºC, P7=1
With a decimal in ºC, P7=2 No decimal degrees in ºF, P7=3, with a decimal in ºF).
The changes in this parameter do not affect the operation of the system because the controller automatically
calculates equivalent values for the set point, locks, alarms, calibration, etc.
Upper/lower blocking of the set point
Sets the upper (C2) and lower (C3) thresholds for the set point value (SP). These limits are also valid for automatic
variations of the set point (C10 and C12).
it will function as product temperature probe.
8

Digital input function (only 4-key controllers)
The digital input function is defined by parameters P10 (D1) and P11 (D2), with the following options:
P10/P11=0: Off (no function)
P10/P11=1: Door contact, controls the activation/deactivation of ECO mode. (p. 11)
P10/P11=2: External alarm, controls activation/deactivation of the external alarm (p. 17).
P10/P11=3: Severe external alarm, controls activation/deactivation of the severe external alarm (p. 17).
P10/P11=4: Slave defrost, activates defrost synchronisation with master unit (p.13).
P10/P11=5: ECO mode activated, controls activation/deactivation of the ECO mode with an external button (p. 11).
P10/P11=6: Activation of the fast freezing mode, controls the activation/deactivation of this mode with an
external button (p. 10).
P10/P11=7: Low pressure switch controls the activation/deactivation of the compressor depending on the state of
the low pressure switch when the pump-down function is on (p. 16) (only available in P10 and 4-
relay units)
Digital input polarity (only 4-key controllers)
Parameters P12 (D1) and P13 (D2) define the polarity of the digital inputs, with the following options:
P12/P13=0: The digital input is energised on closed contact.
P12/P13=1: The digital input is energised on open contact.
Set time (Only controllers with RTC)
The r1 and r2 parameters from the real-time clock (RTC); settings adjust the local time of the controller. The first (r1)
defines the hours and the second (r2) the minutes.
Password
Parameter L5 sets a 2-digit access code for accessing certain controller functions. Its functionality is set using the P2
parameter and a choice of several possibilities:
P2=0: Inactive access code; password will never by requested.
P2=1: Blocks access to parameters; will request access code (L5) when trying to access the program menu.
P2=2: Blocks keypad functions; will request the access code (L5) when trying to activate any of the keypad functions
(standby, defrost, fast freezing, program menu, set point change menu, etc.)
Power supply delays
Parameter P1 delays all controller functions when energised, and displays a minute count. It is normally used to
stagger the start-up of various refrigeration services in a single system during the process of start-up or reset after
a period without power. It can also help to avoid repeated system start-ups when tests are carried out on the
facility's electrical system.
IMPORTANT: During the time set in P1, the controller will only show the temperature. It will not control
the system in any way. If additional delays (alarm, protection of the compressor, etc.) have been
programmed, they start to run after the period set by P1.
9

4.- Operation
4.1.- C ontrol (not available in thermometers)
Commonly used for fast freezing newly stored product.
Activated by pressing the ESC key for 5 seconds. The display shows the icon while
%
this mode is active.
Otherwise, users may turn this function on and off at will by pressing an external button (1-touch on/off), for which
one of the digital inputs must be set as "fast freezing activation" (P10 or P11=6).
ompressor c
NORMAL OPERATION (COOL)
REVERSE OPERATION (HEAT) (only 1-relay controllers)
FAST FREEZING MODE (only 4-key controllers)
ON
SP SP+C1
OFF
COOL
ºC
When the temperature in probe 1 reaches the set
point value (SP) plus the probe differential (C1),
the COOL relay is activated, starting the
compressor and leading to a drop in temperature.
Once you the set point value (SP) is reached, the COOL relay is turned off,
stopping the compressor.
When the temperature in probe 1 reaches the set
point value (SP) minus the probe differential (C1),
the COOL relay is activated, starting the heating
resistors and leading to a rise in temperature.
Once the set point value (SP) is reached, the
COOL relay is turned off, cutting power to the
resistors.
Upon enabling this mode, the compressor starts
up until the temperature of probe 1 reaches the
set point value, minus the change indicated in pa-
rameter C10.
The unit will then return to normal operation.
If this point is not reached, the unit returns to normal operation after the
time set in C9, or by pressing the ESC key again for 5 seconds.
4.- Operation
4.1.- C ontrol (not available in thermometers)
Commonly used for fast freezing newly stored product.
Activated by pressing the ESC key for 5 seconds. The display shows the icon while
%
this mode is active.
Otherwise, users may turn this function on and off at will by pressing an external button (1-touch on/off), for which
one of the digital inputs must be set as "fast freezing activation" (P10 or P11=6).
ompressor c
NORMAL OPERATION (COOL)
REVERSE OPERATION (HEAT) (only 1-relay controllers)
FAST FREEZING MODE (only 4-key controllers)
When the temperature in probe 1 reaches the set
point value (SP) plus the probe differential (C1),
the COOL relay is activated, starting the
compressor and leading to a drop in temperature.
Once you the set point value (SP) is reached, the COOL relay is turned off,
stopping the compressor.
4.- Operation
4.1.- C ontrol (not available in thermometers)
Commonly used for fast freezing newly stored product.
Activated by pressing the ESC key for 5 seconds. The display shows the icon while
%
this mode is active.
Otherwise, users may turn this function on and off at will by pressing an external button (1-touch on/off), for which
one of the digital inputs must be set as "fast freezing activation" (P10 or P11=6).
ompressor c
NORMAL OPERATION (COOL)
REVERSE OPERATION (HEAT) (only 1-relay controllers)
FAST FREEZING MODE (only 4-key controllers)
When the temperature in probe 1 reaches the set
point value (SP) minus the probe differential (C1),
the COOL relay is activated, starting the heating
resistors and leading to a rise in temperature.
Once the set point value (SP) is reached, the
COOL relay is turned off, cutting power to the
resistors.
4.- Operation
4.1.- C ontrol (not available in thermometers)
Commonly used for fast freezing newly stored product.
Activated by pressing the ESC key for 5 seconds. The display shows the icon while
%
this mode is active.
Otherwise, users may turn this function on and off at will by pressing an external button (1-touch on/off), for which
one of the digital inputs must be set as "fast freezing activation" (P10 or P11=6).
ompressor c
NORMAL OPERATION (COOL)
REVERSE OPERATION (HEAT) (only 1-relay controllers)
FAST FREEZING MODE (only 4-key controllers)
Upon enabling this mode, the compressor starts
up until the temperature of probe 1 reaches the
set point value, minus the change indicated in pa-
rameter C10.
The unit will then return to normal operation.
If this point is not reached, the unit returns to normal operation after the
time set in C9, or by pressing the ESC key again for 5 seconds.
10
ON
SPSP-C10 SP+C1
OFF
COOL
ºC
ON
SPSP-C1
OFF
COOL
ºC

ECO MODE (only 4-key controllers)
This mode saves energy during periods in which the refrigeration cabinet is not used
much. While this mode is active, the screen will display the ECO icon.
It is activated after a certain period (set in parameter C11) of cabinet door inactivity, for
which one of the digital inputs must be set as "door contact" (P10 or P11=1).
Otherwise, users may turn this function on and off at will by pressing an external button (1-touch on/off), for which
one of the digital inputs must be set as "ECO mode activation" (P10 or P11=5).
If parameter C11 is set to 0, the ECO mode will never be activated.
There are three types of delay, selectable by parameter C4, to protect the compressor (COOL relay). These delays
prevent continuous compressor starts and stops due to sudden changes in temperature.
OFF-ON (C4=0):Minimum compressor OFF time before each start-up.
ON (C4=1):Minimum compressor OFF time after power-up or reset.
OFF-ON / ON-OFF (C4=2):Minimum time during which the compressor will remain ON and OFF in every cycle.
The delay time is defined by parameter C5.
In the event of probe 1 failure (fault, disconnection, etc.) compressor performance will depend on C6 settings.
Users may choose between 3 options:
C6=0: The compressor will be stopped until probe 1 is working again.
C6=1: The compressor will be operational until probe 1 is working again.
C6=2: The compressor will operate according to the average performance of the last 24 hours, taking into
account the number of starts and stops and the average time in each state (stop-start).
C6=3: The compressor will run as scheduled in C7 (ON)
and C8 (OFF).
COMPRESSOR PROTECTION DELAY
OPERATION IN CASE OF PROBE 1 FAILURE
ON
ON
ON
ON
ON (C4=1)OFF-ON (C4=0)
OFF-ON / ON-OFF (C4=1)
SP
SP
SP
SP+C1
SP+C1
SP+C1
C5
C5
C5C5
C5
OFF
OFF
OFF
OFF
COOL
COOL
COOL
POWER SUPPLY
Time
Time
Time
ON
Probe 1 error (If C6=3)
C8 C8C7 C7
OFF
COOL
Time
ON
SP+C12 (SP+C12)+C1
OFF
COOL
ºC
The operation is the same as normal (cool), but increasing the set point by
the number of degrees set in parameter C12.
ECO MODE (only 4-key controllers)
This mode saves energy during periods in which the refrigeration cabinet is not used
much. While this mode is active, the screen will display the ECO icon.
It is activated after a certain period (set in parameter C11) of cabinet door inactivity, for
which one of the digital inputs must be set as "door contact" (P10 or P11=1).
Otherwise, users may turn this function on and off at will by pressing an external button (1-touch on/off), for which
one of the digital inputs must be set as "ECO mode activation" (P10 or P11=5).
If parameter C11 is set to 0, the ECO mode will never be activated.
There are three types of delay, selectable by parameter C4, to protect the compressor (COOL relay). These delays
prevent continuous compressor starts and stops due to sudden changes in temperature.
OFF-ON (C4=0):Minimum compressor OFF time before each start-up.
ON (C4=1):Minimum compressor OFF time after power-up or reset.
OFF-ON / ON-OFF (C4=2):Minimum time during which the compressor will remain ON and OFF in every cycle.
The delay time is defined by parameter C5.
In the event of probe 1 failure (fault, disconnection, etc.) compressor performance will depend on C6 settings.
Users may choose between 3 options:
C6=0: The compressor will be stopped until probe 1 is working again.
C6=1: The compressor will be operational until probe 1 is working again.
C6=2: The compressor will operate according to the average performance of the last 24 hours, taking into
account the number of starts and stops and the average time in each state (stop-start).
C6=3: The compressor will run as scheduled in C7 (ON)
and C8 (OFF).
COMPRESSOR PROTECTION DELAY
OPERATION IN CASE OF PROBE 1 FAILURE
11

4.2.- Defrost control (not available in thermometers)
On units with 1 relay, defrost can only be set by compressor shutdown.
On units with 2 or 3 relays, the auxiliary relay must be set as "defrost" (P6=1), except for
defrost by compressor shutdown.
Defrost is initiated if:
-Time scheduled in parameter d0 has passed since the beginning of last defrost.
-It is time for one of its scheduled start-ups (parameters d10 to d15). This feature requires that d0 is set to 0
(only units with RTC).
-The H key is pressed for 5 seconds
Defrost type
Selected by parameter d7 to define the controller performance during the defrost process.
Drip time
Parameter d9 sets drip time and the time added at the end of defrost cycle to allow for drainage of the remaining
water in the evaporator. During this time the compressor and fans will not be running (unless defrost is by air).
Defrost start-up
By compressor shutdown
(d7=3)
The compressor stops and the defrost takes place statically.
Fans will stop running regardless of parameter F3.
By air
(d7=2)
(models with 2 or more relays)
Fans start running and the compressor starts up. Defrost takes place by air being forced
through the evaporator.
Fans will be on regardless of parameter F3.
By resistors
(d7=0)
(models with 2 or more relays)
The defrost resistors start up and the compressor stops; defrost is the result of heat from the
resistors.
Fans will be running or not depending on parameter F3.
Reverse cycle (Heatpump)
(d7=1)
(models with 2 or more relays)
A 4-way valve is activated which reverses the cold-generating circuit and the compressor starts
up, forcing the defrost.
Fans will be running or not depending on parameter F3.
By hot gas
(d7=1)
(models with 2 or more relays)
A valve is actuated which discharges gas from the compressor to the evaporator inlet. A check
valve prevents hot gas from returning to the liquid line.
Fans will be running or not depending on parameter F3.
12
CONTROL
time
ºC
F4
Max. d1 d3
d9
d0
SP
SP+C1
d4
DEFROST DEFROST
DRIP
TIME
FAN START DELAY
“DEF” MESSAGE
CONTROL CONTROL

Defrost termination
The defrost will terminate if:
-The temperature programmed in parameter 24 has been reached in probe 2 (requires an additional input for
the second probe and activating it via parameter P4).
-Time set in parameter d1 has passed (maximum duration of defrost).
-The H key is pressed for 5 seconds.
Message displayed during defrost
Set by parameter d2, with the choice of showing the actual temperature detected by probe 1 (d2=0), displaying
the temperature detected by probe 1 at the start of defrost (d2=1) or displaying the DEF message (d2=2). The d3
parameter defines the time during which the message is displayed, once the drip time (D9) and the fan stop time
(F4) is over.
Parameter d5 allows users to specify if the unit will (d5=1) or will not (d5=0) defrost when powered up (initial
start-up or after a power failure). In case of choosing option YES (d5=1), the defrost will start after the delay time
specified in d6.
Using parameter d8, users define the computation of time in d0, choosing between total time elapsed (d8=0) or
the total compressor running time (d8=1).
NOTE: If parameter d1 is set to 0, no defrost will be performed.
Defrosting is not performed if the controller is set to heat mode (P0=1)
It works the same way as defrost, but acts on the auxiliary relay (only if P6=1), controlled by probe 3 and serves to
control defrost of a second evaporator.
Defrost Master - Slave
This feature allows users to synchronize defrost of several units. This is especially suitable for cabinets with multiple
independently controlled evaporators, thus avoiding having an evaporator defrosting (generating heat) while the
next is generating cold.
When the main controller designated as Master (P6=5) initiates a defrost, it forces the rest, which must be
configured as slaves (P10 or P11=4), to initiate their defrost cycles.
When the main controller ends the defrost according to the time set by d1 (the temperature in probe 2 is not taken
into account) it will force slaves to end defrosting and start synchronised drip time.
The master defrost function can only be set on 4-relay units and requires the use of an external relay (see diagram
on next page).
Up to 15 units may be connected to a Master Controller and the maximum distance should not exceed 15 metres.
Other parameters
Second defrost (only 4-relay controllers)
13

Example of Master - Slave defrost function
S1
S1
S1
S1
S1
S2
S2
S2
S2
S2
1 2 3 4
AKO-D144xx-RC
Master
RE
DEF
DEF
DEF
DEF
DEF
I max.:
16 A
L N
5 6 7 8 9 10 11
AKO-D143xx
AKO-D143xx
AKO-D143xx
AKO-D143xx
5
5
5
5
1
1
1
1
6
6
6
6
2
2
2
2
7
7
7
7
3
3
3
3
8
8
8
8
4
4
4
4
9
9
9
9
10
10
10
10
11
11
11
11
I max.:
16 A
L N
Settings:
d7=0 P4=2
P6=1 P10=4
Settings:
d7=0 P4=2
P6=1 P10=4
Settings:
d7=0 P4=2
P6=1 P10=4
Settings
d7=0 P4=2
P6=1 P10=4
to other slave controllers
(Maximum 15 controllers)
Settings
d7=0 P4=2
P6=5
S1: Control probe
S2: Defrost probe (evaporator)
RE: External relay
Slave
Slave
Slave
Slave
14
Maximum distance 15 meters

4.3.- Fan control (only controllers with two or more relays)
On 2-relay units, the auxiliary relays must be configured as "Fans" (P6=0).
Fans are controlled with probe 2 (evaporator) and parameters F0 (shutdown temperature) and F1 (Probe differential).
Even if probe 2 is not connected (P4=1) or an error is detected in the probe (E2), the fans will always run
regardless of parameters F0 and F1, but taking into account parameters F2 to F5.
Parameter F2 defines the status of the fans during compressor stops and parameter F5 defines the status of the
fans when the door is opened, which requires setting up one of the digital inputs as door contact (P10 or P11=1).
Parameter F3 defines the status of fans during defrost. This feature is activated only for defrost by resistors, cycle
reversal or hot gas. If defrost is by air, the fans will always be active and if it is by compressor shutdown they will
always be inactive, regardless of parameter F3.
Parameter F4 defines the fan start-up delay after defrost (see section 4.2)
4.4.- Light control (only controllers with two or more relays)
On units with 2 or more relays, the auxiliary relay can be configured as "Light" (P6=3).
In these cases, the AUX relay will remain ON (lights on) while the unit is running. If the
unit switches to standby mode, the relay will switch OFF (lights out).
This feature turns off the lights in the cabinet when not in use (standby mode).
ON
ON
Fan control
SPF0
(probe 2)
F0+F1
(probe 2)
Only if F2=1
SP+C1
OFF
OFF
COOL
FAN
Time
4.3.- Fan control (only controllers with two or more relays)
On 2-relay units, the auxiliary relays must be configured as "Fans" (P6=0).
Fans are controlled with probe 2 (evaporator) and parameters F0 (shutdown temperature) and F1 (Probe differential).
Even if probe 2 is not connected (P4=1) or an error is detected in the probe (E2), the fans will always run
regardless of parameters F0 and F1, but taking into account parameters F2 to F5.
Parameter F2 defines the status of the fans during compressor stops and parameter F5 defines the status of the
fans when the door is opened, which requires setting up one of the digital inputs as door contact (P10 or P11=1).
Parameter F3 defines the status of fans during defrost. This feature is activated only for defrost by resistors, cycle
reversal or hot gas. If defrost is by air, the fans will always be active and if it is by compressor shutdown they will
always be inactive, regardless of parameter F3.
Parameter F4 defines the fan start-up delay after defrost (see section 4.2)
4.4.- Light control (only controllers with two or more relays)
On units with 2 or more relays, the auxiliary relay can be configured as "Light" (P6=3).
In these cases, the AUX relay will remain ON (lights on) while the unit is running. If the
unit switches to standby mode, the relay will switch OFF (lights out).
This feature turns off the lights in the cabinet when not in use (standby mode).
4.3.- Fan control (only controllers with two or more relays)
On 2-relay units, the auxiliary relays must be configured as "Fans" (P6=0).
Fans are controlled with probe 2 (evaporator) and parameters F0 (shutdown temperature) and F1 (Probe differential).
Even if probe 2 is not connected (P4=1) or an error is detected in the probe (E2), the fans will always run
regardless of parameters F0 and F1, but taking into account parameters F2 to F5.
Parameter F2 defines the status of the fans during compressor stops and parameter F5 defines the status of the
fans when the door is opened, which requires setting up one of the digital inputs as door contact (P10 or P11=1).
Parameter F3 defines the status of fans during defrost. This feature is activated only for defrost by resistors, cycle
reversal or hot gas. If defrost is by air, the fans will always be active and if it is by compressor shutdown they will
always be inactive, regardless of parameter F3.
Parameter F4 defines the fan start-up delay after defrost (see section 4.2)
4.4.- Light control (only controllers with two or more relays)
On units with 2 or more relays, the auxiliary relay can be configured as "Light" (P6=3).
In these cases, the AUX relay will remain ON (lights on) while the unit is running. If the
unit switches to standby mode, the relay will switch OFF (lights out).
This feature turns off the lights in the cabinet when not in use (standby mode).
15

4.5.- Pump down function (only four-relay controllers)
This function prevents compressor problems caused by movement of the refrigerant, using a stop/start technique of
the unit controlled by liquid solenoid, the low pressure switch and the compressor.
For this feature to be active, the auxiliary relay must be set as "Pump down" (P6=4), which automatically
configures digital input 1 as "low pressure switch" (P10=7)
SHUTOFF
When temperature probe 1 reaches the set point value (SP), the AUX relay is deactivated (OFF) by closing the liquid
solenoid.
Since the compressor is still running (COOL relay ON) the evaporator pressure drops suddenly. When it reaches a
specific point, the low pressure switch is activated, changing the state of digital input 1, and the controller stops
the compressor (COOL Relay OFF).
This manoeuvre isolates the refrigerant from the compressor crankcase, preventing serious damage on start-up.
In case of low pressure switch failure, the controller stops the compressor after the safety time set at P15, showing
the message "Art", but it will continue to function normally.
STARTUP
When temperature probe 1 reaches the set point value plus the differential (SP+C1), the AUX relay is activated
(ON), opening the liquid solenoid. This causes the pressure in the evaporator to increase, disabling the low pressure
switch. The controller detects this change and starts the compressor (COOL relay ON).
Balancing the high and low pressure settings before start-up makes it much smoother and extends compressor life.
If after a time (as determined by P14) after opening the liquid solenoid (AUX relay ON), the low pressure switch is
not turned off, the controller will again close the solenoid (AUX relay OFF) and will repeat the manoeuvre after 2
minutes. The controller will display "Art".
STAND-BY
If the pump-down function is active, some time may elapse from the time the stand-by function starts until the
controller stops. This is because certain control phases of the system cannot be stopped.
ON
Liquid
solenoid
Low pressure
switch
Pressure
switch fault
Pressure
switch fault
Compressor
Evaporator
pressure
ON
ON
+
P15 P14
OFF
OFF
OFF
AUX
Digital
Input
COOL
Time SP SPSP+C1 SP+C1
16

4.6.- Alarms
The unit alerts users via a message on the screen, by activating a relay* or both, when the programmed parameter
criteria are met.
Shows the AH or AL message when the temperature in probe 1 reaches the value set in the
A1 (maximum temperature) and A2 (low temperature) parameters.
This value can be:
Absolute (A0=1): A1/A2 should indicate the temperature at which the alarm should
be activated.
Relative to SP (A0=0): A1/A2 should indicate the number of degrees above or below
the set point at which the alarm is activated. This option
allows users to adjust the set point without having to modify
the high and low alarm settings.
Parameter A10 sets the differentials for both parameters (hysteresis).
This alarm will also activate the auxiliary relay (if P6=2).
In a controller we configure the following parameters: SP=2, A1=10, A10=2
- If A0=0 (relative to SP), the maximum temperature alarm goes off when probe 1 reaches 12 degrees and
is disabled when it reaches 10 degrees.
- If A0=1 (absolute), the maximum temperature alarm goes off when probe 1 reaches 10 degrees and is
disabled when it reaches 8 degrees.
Displays the message AE (external alarm) or AES (severe external alarm), when the digital
input configured as external alarm or severe external alarm is activated.
At least one of the digital inputs must be configured as external alarm (P10 or P11=2)
or severe external alarm (P10 or P11=3).
This alarm will also activate the auxiliary relay (if P6=2).
Shows the Adt alarm message when a defrost terminates by time-out, if parameter A8=1.
This alarm is only displayed on the screen; it will never activate the alarm relay.
Displays PAb message when the digital input configured as door contact (P10 or P11=1), is active longer than the
time set by parameter A12.
This alarm is only displayed on the screen; it will never activate the alarm relay.
The Art message is displayed when the pump down function times out, either in the start-up
or the shutoff phase (see section 4.5).
This alarm is only displayed on the screen; it will never activate the alarm relay.
Max/Min Temperature Alarm
Example
External alarm/severe external alarm (only 4-key controllers)
Defrost alarm completed by time.
Open door alarm (only 4-key controllers)
Pump down alarm timed-out (only 4-relay controllers)
*Only available in controllers with 2 or more relays; the AUX relay must be configured as an alarm (P6=2).
17

Alarm delay
Alarm relay configuration (only controllers with 2 or more relays)
These delays prevent the display of specific alarms while allowing the unit to recover normal operation after certain
events.
-Start-up delays (A3): Delays activation of temperature alarms on power-up (start-up or after a power failure). This
allows avoiding continuous alarms upon start-up
-Delay after defrost (A4): Delays activation of temperature alarms post-defrost.
-Delay of max/min temperature alarm (A5): Delays activation of maximum (A1) and minimum (A2) temperature
alarms from the moment temperature probe 1 reaches the set value.
-Delay of external alarm activation (A6): Delays the activation of the external alarm from the moment the digital
input becomes active.
-Delay of external alarm deactivation (A7): Delays the deactivation of the external alarm from the moment the
digital input becomes active.
-Door opening alarm relay (A12): Delays activation of the open door opening detection alarm.
If the auxiliary relay is configured as an alarm relay (P6=2), parameter A9 allows defining the status of the relay when
an alarm is triggered.
A9=0 relay active (ON) in case of alarm (no alarm OFF); A9=1 Inactive relay (OFF) in case of alarm (no alarm ON)
5.- Wiring
5.1.- Thermometers
AKO-D14023, AKO-D14024
1 2 3 4 5 6
230 V~
50/60 Hz
Probe 1
AKO-D14012
1 2 3 4 5 6
Probe 1
_
~
12 V
_
~
24 V
AKO-D14023-C
Probe 1
90-260 V~
50/60 Hz
Modbus
Tr-
Gnd
Tr+
1 2 3 4 5 6 7 8 9 10 11
1514
13
12
18

5.2.- 1-relay controller
AKO-D14112
_
~
12 V
_
~
24 V
16 A
S1
S2 or DI2
DI1
5
16 27 38 49 10 11
COOL /
RES
C.HEATER
I max.:
16 A
L N
AKO-D14120 / D14123 / D14125 / D10123
AKO-D14120
120 V~
50/60 Hz
AKO-D14123/14125/10123
230 V~
50/60 Hz
16 A
Probe 1
1 2 3 4 5 6
COOL
RES
RES
RES
I max.:
16 A
L N
AKO-D14123-2
230 V~
50/60 Hz
2 CV
S1
S2 or DI2
DI1
5
16 27 38 49 10 11
COOL
C.HEATER
I max.:
16 A
L N
AKO-D14123-2-RC
90-260 V~
50/60 Hz
2 CV
S1
S2 or DI2
DI1
1 2 3 4
Tr-
Gnd
Modbus
Tr+
5 6 7 8 9 10 11
1514
13
12
COOL
C.HEATER
I max.:
16 A
L N
If P0=0 (Cool mode) COOL
If P0=1 (Heat mode) RES
19

5.3.- 2-relay controller
16 A 8 A
S1
S2 or DI2
DI1
5
16 27 38 49 10 11
COOL
AUX
C.HEATER
AKO-D14212 / D14220 / D14223 / D10223
I max.:
16 A
L N
AUX.
AKO-D14212
_
~
12 V
AKO-D14220
120 V~
50/60 Hz
AKO-D14223/10223
230 V~
50/60 Hz
5.4.- 3-relay controller
AKO-D14312 / D14320 / D14323 / D10323
16 A 8 A6 A
S1
S2 or DI2
DI1
5
16 27 38 49 10 11
COOL
FAN
C.HEATER
AUX
I max.:
16 A
L N
AUX.
COOL
FAN
C.HEATER
AUX
I max.:
16 A
L N
AUX.
AKO-D14323-C
230 V~
50/60 Hz
16 A 8 A6 A
S1
S2 or DI2
DI1
1 2 3 4
Tr-
Gnd
Modbus
Tr+
5 6 7 8 9 10 11
1514
13
12
AKO-D14312
_
~
12 V
AKO-D14320
120 V~
50/60 Hz
AKO-D14323/10323
230 V~
50/60 Hz
20