AKO D144xx Series Temperature Controllers
1. Warnings
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 ensure 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 power supply circuit must be provided with a main switch rated at at least 2 Amperes, 230 Volts AC, located close to the equipment. The cables will enter through the back and should be type H05VV-F or H05V-K.
The gauge (wire gauge) will depend on local regulations, but should in no case be less than 1 square millimeter. Connecting wires for the relay contacts should be sized 2.5 square millimeters.
Between -40 Degrees Celsius and +20 Degrees Celsius, if the NTC probe is prolonged up to 1000 meters with a minimum cable of 0.5 square millimeters, the maximum deviation will be of 0.25 Degrees Celsius (extension cable for probe ref. AKO-15586).
NOTE: Equipment not compatible with AKO-14917 (external communication module) and AKO-14918 (programming key).
2. Installation
The unit is designed for panel mounting with anchors. The panel cutout dimensions are 71 x 29 mm. The front panel dimensions are 79 x 38 mm, with a depth of 61 mm.
3. Wiring
The probe and its cable should NEVER be installed in the same conduit as power, control, or supply cables.
Wiring Diagrams:
Textual description of wiring for different models:
- AKO-D14412 / D14412-RC: Connects to 90-240 Volts AC, 50/60 Hz. Terminals include L, N, Tr+, Tr-, Gnd, COOL, FAN, AUX, AUX. Relay, S1, S2 or DI2, S3 or DI1, DI1. Modbus terminals are also present.
- AKO-D14123-2-RC: Connects to 90-240 Volts AC, 50/60 Hz. Terminals include L, N, Tr+, Tr-, Gnd, COOL, FAN, AUX, AUX. Relay, S1, S2 or DI2, S3 or DI1, DI1. Modbus terminals are also present.
- AKO-D14323-C: Connects to 90-240 Volts AC, 50/60 Hz. Terminals include L, N, Tr+, Tr-, Gnd, COOL, FAN, AUX, AUX. Relay, S1, S2 or DI2, S3 or DI1, DI1. Modbus terminals are also present.
- AKO-D14423 / D14423-RC / D14420: Models include 230 Volts AC, 90-240 Volts AC, and 120 Volts AC, all 50/60 Hz. Terminals include L, N, Tr+, Tr-, Gnd, COOL, FAN, DEF, AUX, AUX. Relay, S1, S2 or DI2, S3 or DI1, DI1. Modbus terminals are also present.
Terminal Descriptions:
- S1: Probe 1, temperature in the chamber or cabinet.
- S2/DI2: Probe 2, defrost or digital input 2 (as per P4).
- S3/DI1: Probe 3, temperature of product / 2nd defrost, or digital input 1 (as per P4).
- DI1: Digital Input 1.
- AUX. Relay Function: As per parameter P6.
4. Operation
Button Functions:
- [ESC Key] / %: Press for 5 seconds to start/stop Fast Freezing mode (rapid cooling). In the programming menu, exit without saving parameters, return to the previous level, or exit programming.
- [SET Key]: Press for 5 seconds to modify the set point (SP). Press for 10 seconds to go to the programming menu. In the programming menu, go to the level displayed or accept the new value while setting a parameter.
- [Up Arrow] / N: Pressing for 5 seconds starts/stops defrosting. In the programming menu, allows scrolling through levels or changing parameter values.
- [Down Arrow] / Q: Pressing for 5 seconds activates Standby mode. Pressing for 2 seconds returns the equipment to normal mode. In Standby mode, the equipment performs no actions and only the indicator is displayed on the screen. In the programming menu, allows scrolling through levels or changing parameter values.
Programming Menu Navigation:
The menu structure is organized into Level 1 (Menus), Level 2 (Parameters), and Level 3 (Values). Navigation is done using the [SET] and [ESC] buttons.
- Change menu: Press [SET] briefly.
- Change parameter: Press [SET] briefly.
- Change value: Press [SET] briefly.
- Accept value and exit: Press [SET] for 5 seconds.
- Exit Programming: Press [ESC] for 10 seconds.
- Return to Level 1: Press [ESC] briefly.
- Back up one level without saving changes: Press [ESC] briefly.
4.1 Access to Set Point and Programming:
To change the set point (SP), press the [SET] key for 5 seconds. To access the programming menu, press the [SET] key for 10 seconds.
5. Start-up
On power-up, the equipment starts in Wizard mode (P3 / 1 flashing). Use the [Up Arrow] or [Down Arrow] to select the most appropriate application and press [SET].
Available applications:
- 1: Multipurpose
- 2: Frozen
- 3: Fruits and vegetables
- 4: Fresh fish
- 5: Soft Drinks
- 6: Bottle racks
- 7: AC
- 8: Heat / Incubators
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.
Default Settings by Application:
| Application | SP | d0 | F0 | P0 |
|---|---|---|---|---|
| Multipurpose | -2 | 4 | 8 | 0 |
| Frozen | -18 | 4 | 20 | 0 |
| Fruits and vegetables | 0 | 4 | 20 | 0 |
| Fresh fish | 3 | 4 | 20 | 0 |
| Soft Drinks | 8 | 4 | 20 | 0 |
| Bottle racks | 8 | 4 | 20 | 0 |
| AC | 21 | 4 | 20 | 0 |
| Heat/Incubators | 37 | 4 | 20 | 0 |
6. Table of Parameters and Messages
The Def. column shows factory-set default parameters. Those marked with * are variable parameters depending on the application chosen in the wizard or the P3 parameter. Unless otherwise stated, temperatures are expressed in Degrees Celsius.
Control Parameters (C0-C12, EP)
| Level 2 | Level 3 Description | Values (Units) | Min. | Def. | Max. |
|---|---|---|---|---|---|
| C0 | Calibrating probe 1 (Offset) | With NTC (Degrees Celsius/Fahrenheit) | -20.0 | 0.0 | 20.0 |
| C1 | Probe 1 differential (Hysteresis) | With NTC (Degrees Celsius/Fahrenheit) | 0.1 | 2.0 | 20.0 |
| C2 | Upper blocking of the set point (cannot be set above this value) | With NTC (Degrees Celsius/Fahrenheit) | -50 (-58 Fahrenheit) | 99 (210 Fahrenheit) | 150 (302 Fahrenheit) |
| C3 | Lower blocking of the set point (cannot be set below this value) | With NTC (Degrees Celsius/Fahrenheit) | -50 (-58 Fahrenheit) | - | 150 (302 Fahrenheit) |
| C4 | Type of delay for protection of the compressor: 0=OFF/ON (since the last disconnection); 1=OFF-ON/ON-OFF (since the last shut-down /start-up) | 0 | 0 | 1 | |
| C5 | Protection delay time (value of the option selected in parameter C4) | (minutes) | 0 | 0 | 120 |
| C6 | Status of COOL relay with probe fault: 0=OFF; 1=ON; 2=Average based on last 24 hours prior to probe fault; 3=ON-OFF as prog. C7 and C8 | 0 | 2 | 3 | |
| C7 | Time relay ON in case of faulty probe (If C7=0 and C8≠0, the relay will always be OFF de-energised) | (minutes) | 0 | 10 | 120 |
| C8 | Time relay OFF in case of fault of probe 1 (If C8=0 and C7≠0, the relay will always be ON energised) | (minutes) | 0 | 5 | 120 |
| C9 | Maximum duration of fast freezing mode. (0=off) | (hours) | 0 | 24 | 48 |
| C10 | Change set point (SP) in fast freezing mode, when it reaches this point (SP + C10) returns to normal. (SP+C10 ≥ C3) (0=OFF) | (Degrees Celsius/Fahrenheit) | 0 | -50 (-58 Fahrenheit) | C3-SP |
| C11 | Length of inactivity at digital input to activate ECO mode (Only if P10 or P11=1 and P0=0) (0=OFF) | (hours) | 0 | 2 | 24 |
| C12 | Change set point (SP) in ECO mode (SP+C12 ≤ C2) (0=off) | (Degrees Celsius/Fahrenheit) | 0 | 2 | C2-SP |
| EP | Exit to Level 1 |
Defrost Control (d0-d15, EP)
| Level 2 | Level 3 Description | Values (Units) | Min. | Def. | Max. |
|---|---|---|---|---|---|
| d0 | Defrost frequency (Time between two starts) | (hours) | 0 | 0 | 96 |
| d1 | Maximum defrost duration (0=defrost deactivated) | (minutes) | 0 | 0 | 255 |
| d2 | Type of message during defrost: 0=Current temperature; 1=Temperature at start of defrost; 2=Display dEF message | 0 | 2 | 2 | |
| d3 | Maximum duration of message (time added at the end of the defrost) | (minutes) | 0 | 5 | 255 |
| d4 | Defrost end temperature (probe 2) (If P4 ≠ 1) | (Degrees Celsius/Fahrenheit) | -50 (-58 Fahrenheit) | 8 (46 Fahrenheit) | 99.9 (211 Fahrenheit) |
| d5 | Defrost on equipment start-up: 0=NO, First defrost as per d0; 1=YES, First defrost as per d6 | 0 | 0 | 1 | |
| d6 | Defrost start delay on equipment start-up | (minutes) | 0 | 0 | 255 |
| d7 | Defrost type: 0=Resistors, 1=Inverted cycle (In two-relay equipment, P6 must be programmed to zero) | 0 | 0 | 1 | |
| d8 | Calculated time between defrost periods: 0=Total actual time; 1=Sum of times the compressor is on | 0 | 0 | 1 | |
| d9 | Drip time at end of defrost (compressor and fans off) (if P4 ≠ 1) | (minutes) | 0 | 1 | 255 |
| d10 | 1st defrost start time (RTC required) | (hours) | 00 Off | 0 | 23 |
| d11 | 2nd defrost start time (RTC required) | (hours) | 00 Off | 0 | 23 |
| d12 | 3rd defrost start time (RTC required) | (hours) | 00 Off | 0 | 23 |
| d13 | 4th defrost start time (RTC required) | (hours) | 00 Off | 0 | 23 |
| d14 | 5th defrost start time (RTC required) | (hours) | 00 Off | 0 | 23 |
| d15 | 6th defrost start time (RTC required) | (hours) | 00 Off | 0 | 23 |
| EP | Exit to Level 1 |
FAN Control (F0-F5, EP)
| Level 2 | Level 3 Description | Values (Units) | Min. | Def. | Max. |
|---|---|---|---|---|---|
| F0 | Fan shut-down temperature as per probe 2 (if P4 ≠ 1) | (Degrees Celsius/Fahrenheit) | -50 (-58 Fahrenheit) | 99.9 (211 Fahrenheit) | |
| F1 | Probe 2 differential (If P4 ≠ 1) | (Degrees Celsius/Fahrenheit) | 0.1 | 2.0 | 20.0 |
| F2 | Stop fans when stopping compressor: 0=No, 1=Yes | 0 | 1 | 1 | |
| F3 | Fan status during defrost: 0=Off; 1=On | 0 | 0 | 1 | |
| F4 | Starting delay after defrost (if F3=0) | (minutes) | 0 | 3 | 99 |
| F5 | Stop fans on opening the door: 0=No, 1=Yes (Requires a digital input configured as port P10 or P11=1) | 0 | 0 | 1 | |
| EP | Exit to Level 1 |
ALARMS Control (A0-A12, EP)
| Level 2 | Level 3 Description | Values (Units) | Min. | Def. | Max. |
|---|---|---|---|---|---|
| A0 | Configuration of temperature alarms: 0=Relative to SP; 1=Absolute | 0 | 0 | 1 | |
| A1 | Maximum alarm probe 1 (must be greater than SP) | With NTC (Degrees Celsius/Fahrenheit) | - | 99.9 (211 Fahrenheit) | 99.9 (211 Fahrenheit) |
| A2 | Minimum alarm probe 1 (must be less than SP) | With NTC (Degrees Celsius/Fahrenheit) | -50 (-58 Fahrenheit) | - | - |
| A3 | Temperature alarm delay during start-up | (minutes) | 0 | 0 | 120 |
| A4 | Temperature alarm delay after completion of a defrost | (minutes) | 0 | 0 | 99 |
| A5 | Temperature alarm delay after reaching the value of A1 or A2 | (minutes) | 0 | 30 | 99 |
| A6 | External alarm / Severe external alarm delay when receiving digital input signal (P10 or P11=2 or 3) | (minutes) | 0 | 0 | 120 |
| A7 | Deactivation delay of the external alarm / Severe external alarm when the signal of the digital input disappears (P10 or P11=2 or 3) | (minutes) | 0 | 0 | 120 |
| A8 | Show warning if defrost is terminated by time-out: 0=No, 1=Yes | 0 | 0 | 1 | |
| A9 | Alarm relay polarity: 0=Relay ON in alarm (OFF no alarm); 1=Relay OFF on alarm (ON with no alarm) | 0 | 0 | 1 | |
| A10 | Temperature Alarm Differential (A1 and A2) | (Degrees Celsius/Fahrenheit) | 0.1 | 1.0 | 20.0 |
| A12 | Door open alarm delay (if P10 or P11=1) | (minutes) | 0 | 2 | 120 |
| EP | Exit to Level 1 |
General Status Parameters (P0-P19, EP)
| Level 2 | Level 3 Description | Values (Units) | Min. | Def. | Max. |
|---|---|---|---|---|---|
| P0 | Type of operation: 0=Direct,Cold; 1=Inverted,Heat | 0 | 0 | 1 | |
| P1 | Delay of all functions on receiving electrical power | (minutes) | 0 | 0 | 255 |
| P2 | Access code (password) functions: 0=Inactive; 1=Block access to parameters; 2=Keyboard lock | 0 | 0 | 2 | |
| P4 | Selection of type of inputs: 1=1 probe + 2 digital inputs; 2=2 probes +1 digital input; 3=3 probes (1) | 1 | 1 | 3 | |
| P5 | MODBUS address | 1 | 1 | 255 | |
| P6 | Configuration of AUX relay: 1=Defrost / 2nd Defrost (1); 2=Alarm; 3=Light; 4=Pump down (1); 5=Master Defrost(1) | 0 | 1 | 5 | |
| P7 | Temperature display mode: 0=Whole in Degrees Celsius; 1=One decimal in Degrees Celsius; 2=Whole in Degrees Fahrenheit; 3=One decimal in Degrees Fahrenheit | 0 | 1 | 3 | |
| P8 | Probe to be displayed (as per parameter P4): 0=visualization of all the probes in sequence; 1=Probe 1; 2=Probe 2; 3=Probe 3 (1) | 1 | 1 | 2 | |
| P9 | Selection of probe type: 0=NTC; 1=PTC | 0 | 0 | 1 | |
| P10 | Configuring digital input 1: 0= Off; 1=Door contact; 2=External alarm; 3=Severe external alarm; 4=Slave defrost; 5=Act. ECO mode by pushbutton; 6=Act.Fast Freezing; 7= Low pressure switch (1); 8=Remote defrost; 9=Act. ECO mode by switch | 0 | 0 | 9 | |
| P11 | Configuring digital input 2: 0= Off; 1=Door contact; 2=External alarm; 3=Severe external alarm; 4=Slave defrost; 5=Act. ECO mode by pushbutton; 6=Act.Fast Freezing; 7=Not used; 8=Remote defrost; 9=Act. ECO mode by switch | 0 | 0 | 9 | |
| P12 | Digital input polarity 1: 0=Energised on closed contact, 1=Energised on open contact | 0 | 0 | 1 | |
| P13 | Digital input polarity 2: 0=Energised on closed contact, 1=Energised on open contact | 0 | 0 | 1 | |
| P14 | Maximum start-up time after pump down ((Values between 1 and 9 seconds are not accepted) | (Sec.) | 1 | 0 | 120 |
| P15 | Maximum pump down time | (minutes) | 0 | 0 | 15 |
| P19 | Lights in ECO Mode (P6=3): 0=ON; 1=OFF | 0 | 0 | 1 | |
| EP | Exit to Level 1 |
REAL TIME CLOCK Parameters (RTC required)
| Level 2 | Level 3 Description | Values (Units) | Min. | Def. | Max. |
|---|---|---|---|---|---|
| r1 | Clock configuration:HOUR | (hours) | 0 | 0 | 23 |
| r2 | Clock configuration:MINUTES | (minutes) | 0 | 0 | 59 |
| EP | Exit to Level 1 |
Access and Information Control
| Level 2 | Level 3 Description | Values (Units) | Min. | Def. | Max. |
|---|---|---|---|---|---|
| L5 | Access code (Password) | 0 | - | 99 | |
| PU | Program version (Information) | - | - | - | |
| Pr | Program revision (Information) | - | - | - | |
| EP | Exit to Level 1 |
MESSAGES
- L5: Access code (Password) request
- dEF: Indicates a defrost is underway. (Only if parameter d2=2)
- E1: Probe 1 faulty (open circuit, crossover, or temperature outside the probe limits)
- E2: Probe 2 faulty (open circuit, crossover, or temperature outside the probe limits)
- E3: Probe 3 faulty (open circuit, crossover, or temperature outside the probe limits)
- AH: Flashing: maximum temperature alarm on probe 1 (A1)
- AL: Flashing: minimum temperature alarm on probe 1 (A2)
- AE: External alarm activated (only if parameter P10 or P11=2)
- AES: Severe external alarm activated (only if parameter P10 or P11=3)
- Adt: Defrost time-out alarm (only if parameter A8=1)
- PAb: Door open alarm (Only if P10 or P11=1 and as per time at A12)
- Pd: Pump down malfunction error (Stop).
- LP: Pump down malfunction error (Start-up).
- Ar: Clock battery discharged or clock deprogrammed
7. Technical Specifications
Power Supply
| Model | Power Supply |
|---|---|
| AKO-D14412 | 12 Volts AC ±20% 2 VA |
| AKO-D14412-RC | 12 Volts AC ±20% 3 VA |
| AKO-D14420 | 120 Volts AC +8% -12% 50/60 Hz 4 VA |
| AKO-D14123-2-RC/D14423-RC/D14323-C | 90-240 Volts AC 50/60 Hz 7 VA |
| AKO-D14423 | 230 Volts AC 50/60 Hz 3.75 VA |
General Specifications
| Specification | Details |
|---|---|
| Maximum Voltage SELV circuits | 20 V |
| Communication | Modbus RTU RS485 |
| Inputs (According to P4) | 3 NTC/PTC inputs (Sólo AKO-D14412-RC y AKO-D14423-RC); 2 NTC/PTC inputs + 1 digitised input; 1 NTC/PTC input + 2 digitised input |
| Relay 2 CV | (EN60730-1: 16(10) A 250 V~) |
| Relay 16 A | (EN60730-1: 12(9) A 250 V~) |
| Relay 6 A | (EN60730-1: 5(4) A 250 V~) |
| Relay 8 A | (EN60730-1: 8(4) A 250 V~) |
| Number of relay operations | EN60730-1: 100,000 operations |
| Types of probe | NTC AKO-149xx / PTC AKO-1558xx |
| Measurement range NTC | -50.0 °C to +99.9 °C (-58.0 °F to 211 °F) |
| Measurement range PTC | -50.0 °C to +150 °C (-58.0 °F to 302 °F) |
| Resolution (-50 to 100 °C) | 0.1 °C |
| Resolution (> 100 °C) | 1 °C |
| Working environment | -10 to 50 °C, humidity <90 % |
| Ambient storage humidity | -30 to 70 °C, humidity <90 % |
| Class of protection - front panel | IP65 |
| Fixation | Panel-mounted with anchors |
| Panel cutout dimensions | 71 x 29 mm |
| Front panel dimensions | 79 x 38 mm |
| Depth | 61 mm |
| Connections | Connections via screw terminals for cables up to 2.5 mm² |
| Rating of control device | Built-in, automatic operation feature Type 1.B, for use in clean environments, Class A software and continuous operation. Pollution classification 2 s / UNE-EN 60730-1. Double insulation between supply, secondary circuit and relay output. |
| Rated pulse voltage | 2500 V |
| Temperature during ball-pressure test (Accessible parts) | 75 °C |
| Temperature during ball-pressure test (Parts which position active elements) | 125 °C |
| Voltage and current as per EMC test | |
| AKO-D14123-2-RC/D14423/D14423-RC/D14323-C | 207 V, 17 mA |
| AKO-D14420 | 105 V, 36 mA |
| AKO-D14412/D14412-RC | 9.6 V, 181 mA |
| Current of radio jamming suppression tests | 270 mA |
