AKO PROPlus 3PH Series User manual

AKO-1569x AKO-1569x-EVC
PROPlus 3PH BASIC Electronic Panel
GB 1569H042 Ed.03
User Manual

2
AKO Electromecànica 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 carry out technical support.
This product has been developed for use in the applications described in the manual. AKO Electromecànica 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 Electromecànica 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 Electromecànica reserves the right to make any modification to the documentation and the product without prior notification.
Index Page
1.- Presentation ..............................................................................................................................3
1.1.- Maintenance...................................................................................................................3
1.2.- Precauciones...................................................................................................................3
2.- Versions and references..............................................................................................................3
3.- Installation ...............................................................................................................................4
4.- Recommendations .....................................................................................................................7
5.- Description ...............................................................................................................................8
5.1.- Quick access to functions ................................................................................................8
5.2.- Messages........................................................................................................................9
6.- Component location ................................................................................................................10
7.- Pressure switch wiring options ................................................................................................11
8.- Basic configuration ..................................................................................................................12
9.- Operation................................................................................................................................13
9.1.- Compressor control .......................................................................................................13
9.2.- Defrost control ..............................................................................................................15
9.3.- Fan control....................................................................................................................16
9.4.- Light control..................................................................................................................16
9.5.- Pump down function .....................................................................................................17
9.6.- Alarms ..........................................................................................................................18
9.7.- Access code (password) .................................................................................................19
10.- Parameter transfer .................................................................................................................20
11.- Connectivity ..........................................................................................................................21
12.- Advanced configuration .........................................................................................................22
12.1.- Return to initial parameters .........................................................................................22
12.2.- Program version ..........................................................................................................22
12.3.- Parameters..................................................................................................................23
13.- Technical specifications ..........................................................................................................27
1569H042 Ed.03

1.- Presentation
PROPlus 3PH is the global electronic solution to manage positive and negative cold room stores, in combination
with:
ŸStandard condensing units
ŸStreamlined condensing units
ŸOr as a service panel in decentralised systems.
It offers a high degree of IP65 protection for installation in damp environments. It is easy to install thanks to its
new connection strip.
1.1.- Maintenance
Clean the surface of the unit with a soft cloth, water and detergent. Do not use abrasive detergents, petrol, white
spirits or solvents.
1.2.- 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.
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)
IMPORTANT:
ŸThe AUX 1, AUX 2 and AUX 3 relays are programmable, and their operation depends on the
configuration (see page 25).
ŸThe function of the digital inputs depends on the configuration (See page 26).
ŸThe recommended currents and powers are the maximum working currents and powers.
2.- Versions and references
Condensing
unit
Condenser
fans
Evaporator
fan
Defrost
resistances
Light
Power supply
AKO-15690
2,5 - 4 A
3 A
(I+N)
4 A
(I+N)
7.000 W
1 A
(230 W)
400 V / III
50/60 Hz
AKO-15691
4 - 6,3 A
AKO-15692
6,3 - 10 A
10.200 W
AKO-15693
10 - 16 A
AKO-15697
-
-
5 A (I+N)
AKO-15699
1.6 - 2.5 A (III+N)
AKO-15699-1
-
-
6.3 - 10 A (I+N)
20.000 W
AKO-15690-EVC
2,5 - 4 A
3 A
(I+N)
4 A
(I+N)
7.000 W
AKO-15691-EVC
4 - 6,3 A
AKO-15692-EVC
6,3 - 10 A
10.200 W
AKO-15693-EVC
10 - 16 A
AKO-15697-EVC
-
-
5 A (I+N)
AKO-15699-EVC
1.6 - 2.5 A (III+N)
3
1569H042 Ed.03

1569H042 Ed.03
4
3.- Installation
90º
A.- Open and remove cover.
B.- Using the included template, make 4 holes in the wall and fasten the unit to the wall using the supplied screws.
Make a hole in the bottom of the box to pass the cables through, and a suitable gland should be used to main the
IP65 degree of protection.
355
255

1569H042 Ed.03
C.- Put on the cover, and arrange the wiring according to the diagrams enclosed.
Connect the control hose (1), adjust the motor guard (Q1/Q3) and close the cover (2).
Motor guard adjustment (Q1): Put an ammeter clamp into one of the compressor's conductors. Start
the compressor and check its consumption. Set the motor guard (Q1) according to the obtained value. The
set value should never be higher than the consumption indicated by the manufacturer.
11.5
A
A
1
2
I
O
10
16
10
16
Q1
AKO-15690/1/2/3, AKO-15690/1/2/3-EVC
AKO-15699, AKO-15699-EVC
Motor guard adjustment (Q3)
Q3: Put an ammeter clamp into one of the fan's conductors. Start the
fan and check its consumption.
Set the motor guard (Q3) according to
the obtained value.The set value
should never be higher than the
consumption indicated by the
manufacturer.
I
O
1
16
1
1.6
Q3
1.2
A
A
VENT.
5

1569H042 Ed.03
A
B
C
C
C
6
D.- Remove the front trims (A) and screw the cover on using the included screws (B).
Then install the trims again.
ALL MODELS

1569H042 Ed.03
7
4.- Recommendations
Disconnect the voltage before carrying out any operations inside the electrical panel. All wiring should be according to
current standards and should be carried out by authorised staff. Only carry out the wiring foreseen in the wiring
diagrams. Using the electrical panel not observing the manufacturer's instructions may alter the appliance's safety
requirements. A tool is needed to remove any fixed part.
Panel installation:
It is advisable to leave a clean safety space without obstacles around the panel.
Do not knock or make sudden movements on the panel.
Carry out the wiring according to the installation manual.
The probes and their cables should NEVER be installed in a conduit together with power, control or feeder cables.
The earth terminals that the panels contain are installed to guarantee the continuity of earthing, however, earthing is
not carried out by the terminal and should be carried out outside the panel.
The neutral ratings are of the TT type. The IT rating should not be used.
Circuit breakers (protective switches) are of the phase/s + neutral, curve C type, guaranteeing switching and protection
against overcurrents.
Close the panel when your are not working on it.
Residual current protection outside the electrical panel according to low voltage electrotechnical regulations.
The panels meet European standard EN 61439-1 / EN 61439-2.
Terminals for copper external conductors.
Checks before starting the panel up:
Power supply voltages and frequencies will be the ones that figure in the "Technical specifications" section.
Check that there are no loose parts or foreign bodies on connections or switchgear.
Check that there is no dust or damp inside the panel.
Check the correct fastening of the switchgear and components.
Check the correct tightening of the screws and power connections.
Check the correct connection of the power conductors.
Check the correct insulation of the outer lines and that they do not mechanically force the inner connections of the panel.
Check that the maximum current of the Q1 and Q3 current breaker (according to model) has been set correctly.
Before starting the installation up, we recommend preheating the compressor's housing.
Checks during the panel start-up:
Check that no electric arcs occur.
Check that the relays or contactors do not produce ratios.
Check that there is no overheating in cables, controllers and the rest of the switchgear.
Checks after the first 24 hours of operation:
Check that no overheating occurs.
Retighten screws and power connections.
Periodical preventive maintenance:
The panel should remain closed using its lock.
Retighten the power connections once a year.
Check the wear of the switchgear once a year.
Clean the outer surface of the panel with a soft cloth, water and detergent. Do not use abrasive detergents, petrol,
white spirits or solvents.
Technical data:
Working ambient temperature: –5 ºC to 40 ºC
Rated isolation voltage Ui = 440 V~
Electrical panels with degree of protection: IP 65
CEM B environment
Terminals for copper conductors
Resistance to short-circuits Icc=6 kA
Rated pulse voltage (Vimp) 2,5 KV
Cable isolation voltage:
Operation: 500V (Halogen free)
Power: 750V (Halogen free)

5.- Description
Electronic
expansion valve
controller
Defrosting in progress
Continuous cycle active
Stand-by active mode
Change of the Set Point active
(see page 13)
Cold room light active
Alarm active
Fans active
Compressor active*
Compressor or solenoid active**
Temperatura
* If pump down is active, it indicates the operation of the compressor.
** If pump down is active, it indicates that the solenoid is open, otherwise it indicates that the compressor is in operation.
5.1.- Quick access to functions
?ESC
8
Display
Browser
Help key
Safety cover
Electrical
protections
Escape key
Pressing it for 5 seconds allows changing the
SET POINT temperature.
Pressing it for 5 seconds, activates or deacti-
vates the CONTINUOUS CYCLE.
Pressing it for 5 seconds, the quick setup
menu is accessed.
Pressing it for 2 seconds, activates or deacti-
vates the cold room light (if P63=1). This
function stays active although the unit is in the
m mode.
Pressing it for 5 seconds activates or
deactivates the defrost.
If probe 1 is displayed by default, the value
of probe 2 will be displayed by pressing and
vice versa. (see parameter P8)
Pressing it for 10 seconds, the advanced setup
menu is accessed.
Silences the alarms (they are indicated on the
display).
Pressing it for 5 seconds activates or
deactivates the Stand-By mode. The display
shows the m symbol in this mode.
SET
SET
SET
SET
SET
SET
1569H042 Ed.03

6.2- Messages
9
* Requires auxiliary alarm 2 to be configured as alarm relay (P62=1)
Flashing 0: Access code (Password) request
You must enter the access code configured on L5 to execute the requested
function (p. 19).
See also parameter P2 (p. 25)
Probe 1 or 2 faulty
(open circuit, crossover or temperature outside the probe limits; NTC: -50
To 99 ºC).
(Activates alarm relay and sound alarm) *
Indicates a defrost is underway. When the defrost process has finished, the
message will continue to be displayed during the time defined in parameter
d3 (see Chapter 9.2).
Alternating with temperature:
Maximum temperature in control probe alarm. Temperature set in A1 has
been reached (p. 18)
(Activates alarm relay and sound alarm) *
Alternating with temperature:
Minimum temperature in control probe alarm. Temperature set in A2 has
been reached (p. 18).
(Activates alarm relay and sound alarm) *
Alternating with temperature:
External alarm activated (by digital input) (p. 18).
(Activates alarm relay and sound alarm) *
Alternating with temperature:
Severe external alarm activated (by digital input) (p. 18).
(Activates alarm relay and sound alarm) *
Alternating with temperature:
Defrost alarm time-out. Displayed when a defrost ends after the maximum
time elapsed as defined in parameter d1. (p. 18).
(Message only displayed on screen)
Alternating with temperature:
Door open alarm. Shown if the door remains open longer than specified in
parameter A12 (p. 18).
(Activates alarm relay and sound alarm) *
Alternating with temperature:
The maximum pump down stop time has been exceeded (P15)
(p. 18) (Message only displayed on screen)
Alternating with temperature:
The maximum pump down start-up time has been exceeded (P14) (p. 19)
(Message only displayed on screen)
It indicates that a component in the compressor's safety chain has triggered
(compressor motor guard, thermistors or high pressure controller). (Pág. 19)
1569H042 Ed.03

1569H042 Ed.03
6.- Component location
ATTENTION: Make sure to turn of the equipment's power supply before handling it, as different areas
may be energised.
IMPORTANT: The availability of the elements described depends on the panel model.
Identification
F1: Defrost circuit breaker
FM: Operation circuit breaker
Q1: Compressor motor guard
Q3: Evaporator fan motor guard
K1M: Compressor contactor
K2M: Defrost contactor
K4M: Evaporator fan contactor
T2: EVC Transformer
EVC1: Controller for expansion valve
Probe and communications terminal
Protections
Expansion
valve
controller
(EVC)
Contactors
EVC
Transformer
Control cable connector
Control
terminal
Earth
terminal
Power supply
terminal and
expansion valve
control
10

1569H042 Ed.03
7.- Pressure switch wiring options
7
7
PE
PE
6
6
9
9
LP HP
LP HP
7.- Pressure switch wiring options
7.- Pressure switch wiring options
Combine high-low pressure controller (AKO-15690/1/2/3 - AKO-15690/1/2/3-EVC)
Separate Low pressure controller per AC input (AKO-15690/1/2/3 - AKO-15690/1/2/3-EVC)
Pressure controller equivalence
HIGH / LOW
16 1617 17
1 A4 C
FAN CONTROL
DANFOS
/ ALCO / RANCO PENN
7.- Pressure switch wiring options
6 69 97 7 7
21 22 1
14 4B 12 11 2
ALCO RANCO
6 9
AC
DANFOS
/ PENN
11

12
8.- Basic configuration
The basic configuration menu allows the equipment to be configured for the most common applications. Press the
SET key for 5 seconds to access it.
If the access code is activated, a 2 digit code is requested (See page 19), if the code entered is not correct the unit
will not enter programming.
If more specific configuration is required use the advanced configuration menu (see page 22)
After 20 seconds without touching any key, the unit returns to the previous level without saving changes or it will
exit programming.
Function of the keys in programming
SP: Set point
It defines the temperature that should be inside the cold storage room (See page 13):
ŸMinimum: –45.0 *
ŸMaximum: 99 *
*(Depends on the bottom/top locking of the set point).
d0: Defrost frequency
Time that must elapse between the starting of each defrost (see page 15)
d1: Maximum defrost duration
The defrost will end after this time has elapsed since it started.
F3: Fan status during defrost
It defines the status of the fans during defrost. 0= OFF 1= ON
A1: Maximum alarm probe 1
Defines the temperature at which the maximum alarm will be triggered. Only affects probe 1.
ŸMinimum: –45.0 *
ŸMaximum: 99 *
*(Depends on the bottom/top locking of the set point).
A2: Minimum alarm probe 1
Defines the temperature at which the minimum alarm will be triggered. Only affects probe 1.
ŸMinimum: –45.0 *
ŸMaximum: 99 *
*(Depends on the bottom/top locking of the set point).
Passes back to the previous parameter or
decreases the value of the parameter.
Passes on to the next parameter or increases the
value of the parameter.
Accesses the selected parameter or accepts the
value.
Allows exiting a parameter without saving the
changes or exiting programming.
SETSET
SET
ESC
1569H042 Ed.03

13
9.- Operation
9.1.- Compressor control
NORMAL OPERATION
CONTINUOUS CYCLE MODE
Use this function to cool the cold rooms before loading products.
It is activate pressing the O key for 5 seconds, the display shows the % icon while this mode is active.
“CHANGE OF SET POINT” FUNCTION
Modifies the set point value in the low-use periods of the refrigeration device. If this variation is positive (increases
the value), the display will show the ECO icon.
It can be activated after a certain time has elapsed (defined in parameter C11) without activity in the cold room
door, to do this one of the digital inputs such as “door contact” (P10 or P11 = 1) must be configured.
Optionally, you can activate and deactivate this mode at will, using an external pushbutton (1 press to
activate/deactivate), configuring one of the digital inputs as “Change set point” (P10 or P11 = 4).
If we set parameter C11 to 0, it can only be activated by external pushbutton.
ON
SP SP+Dif.
OFF
COMP.
ºC
When the temperature in probe 1 reaches the set
point value (SP) plus the probe's differential (C1),
the compressor activates and makes the
temperature drop. When the set point value (SP) is
reached, the compressor stops.
ON
SP
C9 SP+C1
OFF
COMP.
ºC
9.- Operation
9.1.- Compressor control
NORMAL OPERATION
CONTINUOUS CYCLE MODE
Use this function to cool the cold rooms before loading products.
It is activate pressing the O key for 5 seconds, the display shows the % icon while this mode is active.
“CHANGE OF SET POINT” FUNCTION
Modifies the set point value in the low-use periods of the refrigeration device. If this variation is positive (increases
the value), the display will show the ECO icon.
It can be activated after a certain time has elapsed (defined in parameter C11) without activity in the cold room
door, to do this one of the digital inputs such as “door contact” (P10 or P11 = 1) must be configured.
Optionally, you can activate and deactivate this mode at will, using an external pushbutton (1 press to
activate/deactivate), configuring one of the digital inputs as “Change set point” (P10 or P11 = 4).
If we set parameter C11 to 0, it can only be activated by external pushbutton.
When the temperature in probe 1 reaches the set
point value (SP) plus the probe's differential (C1),
the compressor activates and makes the
temperature drop. When the set point value (SP) is
reached, the compressor stops.
9.- Operation
9.1.- Compressor control
NORMAL OPERATION
CONTINUOUS CYCLE MODE
Use this function to cool the cold rooms before loading products.
It is activate pressing the O key for 5 seconds, the display shows the % icon while this mode is active.
“CHANGE OF SET POINT” FUNCTION
Modifies the set point value in the low-use periods of the refrigeration device. If this variation is positive (increases
the value), the display will show the ECO icon.
It can be activated after a certain time has elapsed (defined in parameter C11) without activity in the cold room
door, to do this one of the digital inputs such as “door contact” (P10 or P11 = 1) must be configured.
Optionally, you can activate and deactivate this mode at will, using an external pushbutton (1 press to
activate/deactivate), configuring one of the digital inputs as “Change set point” (P10 or P11 = 4).
If we set parameter C11 to 0, it can only be activated by external pushbutton.
9.- Operation
9.1.- Compressor control
NORMAL OPERATION
CONTINUOUS CYCLE MODE
Use this function to cool the cold rooms before loading products.
It is activate pressing the O key for 5 seconds, the display shows the % icon while this mode is active.
“CHANGE OF SET POINT” FUNCTION
Modifies the set point value in the low-use periods of the refrigeration device. If this variation is positive (increases
the value), the display will show the ECO icon.
It can be activated after a certain time has elapsed (defined in parameter C11) without activity in the cold room
door, to do this one of the digital inputs such as “door contact” (P10 or P11 = 1) must be configured.
Optionally, you can activate and deactivate this mode at will, using an external pushbutton (1 press to
activate/deactivate), configuring one of the digital inputs as “Change set point” (P10 or P11 = 4).
If we set parameter C11 to 0, it can only be activated by external pushbutton.
Upon enabling this mode, the compressor starts up
until the temperature of probe 1 reaches the set
point value minus the change indicated in parame-
ter 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 O key again for 5 seconds.
ON
SP+C12 (SP+C12)+C1
OFF
COMP.
ºC
Operation is the same as in the normal ode, but
increasing the set point the amount of degrees
defined in the C12 parameter.
1569H042 Ed.03

1569H042 Ed.03
14
COMPRESSOR PROTECTION DELAY
There are three types of delay, selectable by parameter C4, to protect the compressor. 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.
OFF-ON / ON-OFF (C4=1): Minimum time during which the compressor will remain ON and OFF in every cycle.
The delay time is defined by parameter C5.
OPERATION IN CASE OF PROBE 1 FAILURE
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).
SET POINT LOCKING
Using the C2 and C3 parameters, it is possible to set an upper and a lower limit for the Set point (SP), which
precludes configuring a set point that is too low or too high that could damage the installation or the stored
product.
STOP FANS AND COMPRESSOR WHEN THE DOOR IS OPENED
Parameter P23 defines whether the compressor stops when the cold room door is opened. To do so one of the
digital inputs must be configured as "door contact" (P10 or P11=1) (See page 26).
If the door stays open longer than the value programmed in parameter P24, the compressor will return to its
normal operation.
ON ON
OFF-ON (C4=0) OFF-ON / ON-OFF (C4=1)
SP SPSP+C1 SP+C1
C5 C5C5
OFF OFF
COMP. COMP.
Time Time
ON
Probe 1 error (If C6=3)
C8 C8C7 C7
OFF
COMP.
Time

1569H042 Ed.03
15
9.2.- Defrost control
Defrost start-up
Defrost is initiated if:
-Time scheduled in parameter d0 has passed since the beginning of last defrost.
-The N key is pressed for 5 seconds.
Defrost type
By resistors: 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.
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 termination
The defrost will terminate if:
-The temperature programmed in parameter d4 has been reached in probe 2 Probe 2 must be activated (P4).
In the event of probe 2 failure, defrosting will be complete once the maximum time has elapsed (d1)
-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.
CONTROL
time
ºC
F4
Max. d1 d3
d9
d0
SP
SP+C1
d4
DEFROST DEFROST
DRIP
TIME
FAN START DELAY
“DEF” MESSAGE
CONTROL CONTROL

1569H042 Ed.03
16
Other parameters
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.
Remote defrost
This function allows activating the defrost of the unit using an external button, connecting it to one of the digital inputs
that must be configured as "remote defrost”(P10 ó P11=6) .
9.3.- Fan control
Fans are controlled with probe 2 (evaporator) and parameters F0 (shutdown temperature) and F1 (Probe differential).
Even if probe 2 is not connected 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.
Parameter F3 defines the status of fans during defrost.
Parameter F4 defines the fan start-up delay after defrost (see section 9.2)
9.4.- Light control
Auxiliary relay 3 must be configured as “Light” (P63=1).
Switching the lights on or off is controlled using:
ŸThe ? pushbutton: One press switches the lights on or off.
ŸThe cold room door: When the door is opened, the lights stay on for the time
defined by parameter P22. If the value is 0, when the door closes the lights go out. (One of the digital
inputs must be configured as door contact (P10 or P11=1).
The control even occurs with the equipment in Stand-by.
ON
ON
Fan control
SPF0
(probe 2)
F0+F1
probe 2)
Only if F2=1
SP+C1
OFF
OFF
COMP.
FAN
Time
Other parameters
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.
Remote defrost
This function allows activating the defrost of the unit using an external button, connecting it to one of the digital inputs
that must be configured as "remote defrost”(P10 ó P11=6) .
9.3.- Fan control
Fans are controlled with probe 2 (evaporator) and parameters F0 (shutdown temperature) and F1 (Probe differential).
Even if probe 2 is not connected 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.
Parameter F3 defines the status of fans during defrost.
Parameter F4 defines the fan start-up delay after defrost (see section 9.2)
9.4.- Light control
Auxiliary relay 3 must be configured as “Light” (P63=1).
Switching the lights on or off is controlled using:
ŸThe ? pushbutton: One press switches the lights on or off.
ŸThe cold room door: When the door is opened, the lights stay on for the time
defined by parameter P22. If the value is 0, when the door closes the lights go out. (One of the digital
inputs must be configured as door contact (P10 or P11=1).
The control even occurs with the equipment in Stand-by.
Other parameters
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.
Remote defrost
This function allows activating the defrost of the unit using an external button, connecting it to one of the digital inputs
that must be configured as "remote defrost”(P10 ó P11=6) .
9.3.- Fan control
Fans are controlled with probe 2 (evaporator) and parameters F0 (shutdown temperature) and F1 (Probe differential).
Even if probe 2 is not connected 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.
Parameter F3 defines the status of fans during defrost.
Parameter F4 defines the fan start-up delay after defrost (see section 9.2)
9.4.- Light control
Auxiliary relay 3 must be configured as “Light” (P63=1).
Switching the lights on or off is controlled using:
ŸThe ? pushbutton: One press switches the lights on or off.
ŸThe cold room door: When the door is opened, the lights stay on for the time
defined by parameter P22. If the value is 0, when the door closes the lights go out. (One of the digital
inputs must be configured as door contact (P10 or P11=1).
The control even occurs with the equipment in Stand-by.

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9.5.- Pump down function
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=1).
SHUTOFF
When temperature probe 1 reaches the set point value (SP), the AUX 1 relay is deactivated by closing the liquid
solenoid.
Since the compressor is still running 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.
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 "Pd", but it will continue to function normally. (informative message, does not affect the equipment
operation).
If time P15 is 0 (default value), the compressor will not stop until the low pressostat is activated, but it will display
the “Pd” message after 15 minutes.
DOES NOT activate the alarm relay or the sound alarm, it is only shown on the display.
STARTUP
When temperature probe 1 reaches the set point value plus the differential (SP+C1), the AUX 1 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.
If a period of time has elapsed (determined by P14) after the liquid solenoid is opened (AUX 1 relay set to ON), the
low pressostat will not be deactivated, the controller will once again close the solenoid (AUX 1 relay set to OFF)
and the “LP” message will be displayed. This manoeuvre will be repeated every 2 minutes indefinitely until the
pressostat is deactivated and the installation reverts to its normal operation.
If time P14 is 0 (default value), the solenoid will stay open until the low pressostat is deactivated, but it will display
the “LP” message after 3 minutes.
DOES NOT activate the alarm relay or the sound alarm, it is only shown on the display.
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 1
Digital
Input
COMP.
Time SP SPSP+C1 SP+C1

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9.6.- Alarms
The unit warns the user with a message on the screen of the activation of a relay or the activation of an acoustic signal in
certain circumstances, according to the programming of the following parameters.
Max/Min Temperature Alarm
Shows the AH or AL message when the temperature in probe 1 reaches the value set in
the A1 (maximum temperature) or 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).
Activates alarm relay (if P62=1) and sound alarm.
Example
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.
External alarm/severe external alarm
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.
The severe external alarm also deactivates all the charges, therefore, the temperature regulation
is stopped. When this alarm disappears the device returns to its normal operation.
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).
Activates alarm relay (if P62=1) and sound alarm.
Defrost alarm completed by time.
Shows the Adt alarm message when a defrost terminates by time-out, if parameter A8=1.
DOES NOT activate the alarm relay or the sound alarm, it is only shown on the display.
Door open alarm
Displays the PAb message when the door stays open for a time greater than that set with parameter A12. (One of
the digital inputs must be configured as door contact (P10 or P11=1).
Activates alarm relay (if P62=1) and sound alarm.
Pump down malfunction error (Stop)
Displays the Pd message if a malfunction is detected when the installation is stopped
using the pump down manoeuvre. (See page 17).
DOES NOT activate the alarm relay or the sound alarm, it is only shown on the display.

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Pump down malfunction error (Start up)
Displays the LP message if a malfunction is detected when the installation is started up
using the pump down manoeuvre. (See page 17).
DOES NOT activate the alarm relay or the sound alarm, it is only shown on the display.
Compressor safety chain alarm
The ASC message is displayed if any component in the compressor's safety chain is triggered
(compressor motor guard, thermistors or high pressure controller). Regulation is stopped until
protection has been restored.
Alarm delay
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 inactive.
-Door opening alarm relay (A12): Delays activation of the open door opening detection alarm.
Alarm relay configuration
If the auxiliary relay 2 is configured as an alarm relay (P62=1), parameter A9 allows defining the status of the relay
when an alarm is triggered.
ŸA9=0 relay active (ON) in case of alarm (no alarm OFF)
ŸA9=1 Inactive relay (OFF) in case of alarm (no alarm ON)
9.7.- Access code (password)
It allows protecting the configuration of the unit using a 2 digit code (from 01 to 99). If it is active a code is requested
when you try to access the programming menu. This menu cannot be accessed if a wrong value is entered. The code is
defined using the L5 parameter.
Parameter P2 defines the operation of this code.

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10.- Parameter transfer
This function allows transferring the programmed parameters from one device to others, using the AKO-D14918
programming key. This will save a lot of time when configuring similar devices.
Requires the use of the AKO-80018 power supply for the programming key.
Transfer parameters from the equipment to the key
žDisconnect the unit power supply.
žConnect the programming key in the parameter server connector.
žConnect the power supply for the programming key.
žPress the READ key on the programming key.
žDisconnect the device programming key.
Transfer parameters from the key to the equipment
žDisconnect the unit power supply.
žConnect the programming key in the parameter server connector.
žConnect the power supply for the programming key.
žPress the RECORD key for the programming key.
žDisconnect the device programming key.
AKO-80018
AKO-D14918
LED ON
LED COM
Connection cable
Read
Key
Record
Key
External
Power Supply
Connector