AKO AKO-14545 User manual

AKO-14545 AKO-14545-C
5-stage compressor racks +
2 converter outputs
GB
User Manual
1454H502 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
2
1.- Precautions......................................................................................................................................3
2.- Versions and part numbers ...............................................................................................................3
3.- Description.......................................................................................................................................3
3.1.- Keypad functions.................................................................................................................3
3.2.- Display messages................................................................................................................4
4.- Inicio rápido.....................................................................................................................................5
4.1.- “WIZARD” table description................................................................................................5
4.2.- Legend ...............................................................................................................................6
4.3.- “WIZARD” table .................................................................................................................7
5.- Wiring..............................................................................................................................................9
6.- Location of the probes....................................................................................................................10
6.1.- Proportional mode ............................................................................................................10
6.2.- Neutral zone mode............................................................................................................11
6.3.- Pump Down......................................................................................................................12
7.- Fan control.....................................................................................................................................13
7.1.- Proportional mode ............................................................................................................13
7.2.- Neutral zone mode............................................................................................................14
7.3.- Floating condensation.......................................................................................................15
7.4.- Alarms ..............................................................................................................................15
7.5.- Remote disconnection .......................................................................................................17
8.- Connectivity...................................................................................................................................17
9.- Parameter setup .............................................................................................................................18
9.1.- Programming Menu ..........................................................................................................18
9.2.- Parameters........................................................................................................................19
9.3.- Limits and default values of the pressure and temperature parameters according to units.. .24
10.- Technical specifications ................................................................................................................25
10.1.- Dimensions.....................................................................................................................26
10.2.- Mounting........................................................................................................................26
1454H502 Ed.03

1- Precautions
-Using the equipment without following the manufacturer's instructions may affect the device's safety requirements.
-The unit must be installed in a location protected from vibrations, water and corrosive gases, where the ambient
temperature does not exceed that shown in the technical data.
-To ensure a correct reading, the probe must be located away from external effects.
-The power supply circuit must be provided with a main switch rated at least 2 A, 230 V, located close to the equipment.
The cables will enter through the back and should be type H05VV-F or H05V-K.
-The gauge will depend on local regulations, but should in no case be less than 1 mm².
2
-The wiring cables for the contact relays must have a section of 2.5 mm .
2.- Versions and part numbers
3.- Description
3.1.- Keypad functions
In the programming menu, exit without saving parameter, return to previous level or exit programming.
By pressing this key for 1 second the probe display units change (according to parameter C09).
Pressing for 10 seconds goes to the programming menu.
In the programming menu, go to the level displayed or accept the new value while setting a parameter.
By pressing this key for 1 second probe 2 is displayed for 5 seconds (or probe 1, according to parameter
P02). By pressing a second time the probe ambient temperature value will be shown (only if I07 or I08=3).
In the programming menu, allows you to scroll through the various levels or, during the setting of a
parameter, to change the value.
Pressing this key returns the unit to its standard operation after an alarm which requires a reset (the
causes which triggered the alarm must have disappeared).
In programming menu, allows you to scroll through the various levels or, during the setting of a
parameter, to change the value.
SET
ESC
MODELS
POWER SUPPLY
PROBES
DIGITAL
INPUTS
ANALOGUE OUTPUTS
RELAYS
COMMUNICATION
AKO-14545
90-240 V
2 x 0-5 V / 4-20 mA / NTC
+ 1 x NTC
Up to 6
2 x 0-10 V / 4-20 mA
(inverter controls)
5
NO
AKO-14545-C
90-240 V
2 x 0-5 V / 4-20 mA / NTC
+ 1 x NTC
Up to 6
2 x 0-10 V / 4-20 mA
(inverter controls)
5
YES
KeyboardActive alarm
Active relay
indicators
Display
SET
ESC
R1
R2
R3
R4
R5
PRES
TEMP
The display shows the
pressure value
Program
Mode
The display shows the
temperature value
3
1454H502 Ed.03

Flashing 0: Access code (Password) request
You must enter the access code configured on L5 to execute the requested
function (P. 23).
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). (Activates alarm relay)
Clock battery discharged or clock deprogrammed
(Activates alarm relay) (P. 16)
Low pressure alarm due to probe 1
(Activates alarm relay and stops compressors and fans) (P. 16)
High pressure alarm due to probe 2
(Activates alarm relay, stops compressors and activates fans) (P. 16)
Thermal alarm inputs 1 to 5
(Activates alarm relay and stops the output associated to the relevant
thermal) (P. 16)
Severe external alarm activated due to digital input I5 or I6
(According to parameters I07 and I08) (Activates alarm relay and stops
compressors and fans) (P. 16)
Low pressure alarm due to digital input I5 or I6
(According to parameters I07 and I08) (Activates alarm relay and stops
compressors and fans) (P. 15)
High pressure alarm due to digital input I5 or I6
(According to parameters I07 and I08) (Activates alarm relay, stops
compressors and activates fans) (P. 15)
Regulation remotely stopped due to digital input I5 or I6; all
stages/compressors are disconnected. (According to parameters I07 and
I08) (Does not activate alarm relay) (P. 17)
Pump down detained due to time (According to parameter E09)
(Does not activate alarm relay) (P. 16)
PRES
TEMP
PRES
TEMP
PRES
TEMP
3.2.- Display messages
PRES
TEMP
R1
R2
R3
R4
R5
PRES
TEMP
PRES
TEMP
PRES
TEMP
PRES
TEMP
PRES
TEMP
PRES
TEMP
PRES
TEMP
PRES
TEMP
R1
R2
R3
R4
R5
PRES
TEMP
R1
R2
R3
R4
R5
PRES
TEMP
4
1454H502 Ed.03

PRES
TEMP
PRES
TEMP
PRES
TEMP
PRES
TEMP
1
2
3
4
INI
1
1
1
-
-
-
2
1
2
-
-
-
3
1
3
-
-
-
4
1
4
-
-
-
12
Compressors without
inverter
Stages by compressor
Fans without
inverter
Fans with inverter
Compressors with
inverter
Installation
4- Inicio rápido
The unit has a wizard that configures the unit's parameters and assigns the input and output functions
according to the installation type chosen.
When connecting the power supply for the first time, the Configuration Wizard will start, displaying the message
INI on screen. Follow the 4steps detailed below and the unit will be ready to operate:
By using keys N and Q, select the most suitable option according to the installation type in
accordance with the "WIZARD"table on page7 and press SET. The wizard configures the
equipment parameters and assigns the input and output functions according to the
installation type chosen.
Select the refrigerant gas type used from amongst the following options:
0=R134a 1=R404a 2=R717a 3=R22 4=R410a 5=R507a 6=R744
7=R407a 8=R407f 9=R1234y 10=R448a 11=R449a 12=R450a 13=R454A
14=R454C 15=R455A 16=R1234ze 17=R515b 18=R452A 19=R452b
Select the primary and secondary display units from amongst the following options:
0=bar-ºC; 1=psi-ºF; 2=psi-ºC; 3=bar-ºF; 4=ºC-bar;
5=ºF-psi; 6=ºC-psi; 7=ºF-bar
Configure the rest of the parameters to their default value? :
0=No, the configuration is kept for all the parameters except for C01, C02, C04, C05 C06, C08
and C09.
1=Yes, all the parameters are configured to their default value (see parameters table)
(This option does not affect parameters C01, C02, C04, C05 C06, C08 and C09)
In order to start the wizard again, disconnect the unit's power supply, reconnect it and, during the subsequent
8seconds, press the key sequence N, Q, SET.
4.1.- “WIZARD” table description
The “WIZARD” annex table is divided into 3groups of columns.
The first group describes the different types of installation (no.of compressors and fans, whether they have a
converter,etc.) associated to their INIoption.
5
1454H502 Ed.03

The second group specifies the function assigned to each relay depending on the INI option selected.
The third group specifies the function assigned to each digital input depending on the INI option selected.
4.2.- Legend
OUTPUTS
R1
R2
R3
R4
R5
CV
C2
C2a
FV
AL
CV
C2
C2a
C2b
FV
CV
C2
C3
FV
AL
CV
C2
C2a
C2b
FV
Relays R1 to R5
Function assigned to each relay
depending on the INI option selected*
Relays
OUTPUTS
INPUTS
R5
I1
I2
I3
I4
I5
I6
AL
T-VAR-C1
T-C2
T-VAR-F
-
L.P.
H.P.
FV
T-VAR-C1
T-C2
T-VAR-F
-
L.P.
H.P.
AL
T-VAR-C1
T-C2
T-C3
T-VAR-F
L.P.
H.P.
FV
T-VAR-C1
T-C2
T-VAR-F
-
L.P.
H.P.
Inputs I1 to I6
Function assigned to each input
depending on the INI option selected*
Inputs
Compressors without inverter 12Number of stages per compressor Compressor with inverter
Fans without inverter Fans with inverter
FUNCTION OF THE INPUTS
T-VAR-C1:
Thermal input frequency inverter
(compressor)
T-Vx:
Thermal input fan
T-VAR-F:
Thermal input frequency inverter (fans)
H.P.:
Input high pressure switch
T-Cx:
Thermal input compressor
L.P.:
Input low pressure switch
FUNCTION OF THE OUTPUTS
CV:
RUN inverter output (compressor)
Cxa, Cxb,
Cxc:
Output stages 1, 2 and 3 of compressor x
FV:
RUN inverter output (fans)
Vx:
Output fan without inverter
Cx:
Output compressors without inverter
AL:
Alarm output
x: Compressor or fan no.
a, b, c: Compressor stages
6
1454H502 Ed.03

4.3.- “WIZARD” table
INI
OUTPUTS
INPUTS
R1
R2
R3
R4
R5
I1
I2
I3
I4
I5
I6
1
1
1
-
-
-
C1
-
-
-
AL
T-C1
-
-
-
L.P.
H.P.
2
1
2
-
-
-
C1
C1a
-
-
AL
T-C1
-
-
-
L.P.
H.P.
3
1
3
-
-
-
C1
C1a
C1b
-
AL
T-C1
-
-
-
L.P.
H.P.
4
1
4
-
-
-
C1
C1a
C1b
C1c
AL
T-C1
-
-
-
L.P.
H.P.
5
2
1
-
-
-
C1
C2
-
-
AL
T-C1
T-C2
-
-
L.P.
H.P.
6
2
2
-
-
-
C1
C1a
C2
C2a
AL
T-C1
T-C2
-
-
L.P.
H.P.
7
3
1
-
-
-
C1
C2
C3
-
AL
T-C1
T-C2
T-C3
-
L.P.
H.P.
8
4
1
-
-
-
C1
C2
C3
C4
AL
T-C1
T-C2
T-C3
T-C4
L.P.
H.P.
9
5
1
-
-
-
C1
C2
C3
C4
C5
T-C1
T-C2
T-C3
T-C4
T-C5
H.P.
10
0
-
1
-
-
CV
-
-
-
AL
T-VAR-C1
-
-
-
L.P.
H.P.
11
1
1
1
-
-
CV
C2
-
-
AL
T-VAR-C1
T-C2
-
-
L.P.
H.P.
12
1
2
1
-
-
CV
C2
C2a
-
AL
T-VAR-C1
T-C2
-
-
L.P.
H.P.
13
1
3
1
-
-
CV
C2
C2a
C2b
AL
T-VAR-C1
T-C2
-
-
L.P.
H.P.
14
1
4
1
-
-
CV
C2
C2a
C2b
C2c
T-VAR-C1
T-C2
-
-
L.P.
H.P.
15
2
1
1
-
-
CV
C2
C3
-
AL
T-VAR-C1
T-C2
T-C3
-
L.P.
H.P.
16
2
2
1
-
-
CV
C2
C2a
C3
C3a
T-VAR-C1
T-C2
T-C3
-
L.P.
H.P.
17
3
1
1
-
-
CV
C2
C3
C4
AL
T-VAR-C1
T-C2
T-C3
T-C4
L.P.
H.P.
18
4
1
1
-
-
CV
C2
C3
C4
C5
T-VAR-C1
T-C2
T-C3
T-C4
T-C5
H.P.
19
-
-
-
-
FV
-
-
-
AL
T-VAR-F
-
-
-
L.P.
H.P.
20
1
1
-
-
C1
FV
-
-
AL
T-C1
T-VAR-F
-
-
L.P.
H.P.
21
1
2
-
-
C1
C1a
FV
-
AL
T-C1
T-VAR-F
-
-
L.P.
H.P.
22
1
3
-
-
C1
C1a
C1b
FV
AL
T-C1
T-VAR-F
-
-
L.P.
H.P.
23
1
4
-
-
C1
C1a
C1b
C1c
FV
T-C1
T-VAR-F
-
-
L.P.
H.P.
24
2
1
-
-
C1
C2
FV
-
AL
T-C1
T-C2
T-VAR-F
-
L.P.
H.P.
25
2
2
-
-
C1
C1a
C2
C2a
FV
T-C1
T-C2
T-VAR-F
-
L.P.
H.P.
26
3
1
-
-
C1
C2
C3
FV
AL
T-C1
T-C2
T-C3
T-VAR-F
L.P.
H.P.
27
4
1
-
-
C1
C2
C3
C4
FV
T-C1
T-C2
T-C3
T-C4
T-VAR-F
H.P.
28
0
-
1
-
CV
FV
-
-
AL
T-VAR-C1
T-VAR-F
-
-
L.P.
H.P.
29
1
1
1
-
CV
C2
FV
-
AL
T-VAR-C1
T-C2
T-VAR-F
-
L.P.
H.P.
30
1
2
1
-
CV
C2
C2a
FV
AL
T-VAR-C1
T-C2
T-VAR-F
-
L.P.
H.P.
31
1
3
1
-
CV
C2
C2a
C2b
FV
T-VAR-C1
T-C2
T-VAR-F
-
L.P.
H.P.
32
2
1
1
-
CV
C2
C3
FV
AL
T-VAR-C1
T-C2
T-C3
T-VAR-F
L.P.
H.P.
33
3
1
1
-
CV
C2
C3
C4
FV
T-VAR-C1
T-C2
T-C3
T-C4
T-VAR-F
H.P.
12
V
1454H502 Ed.03

INI
INPUTS
OUTPUTS
R1
R2
R3
R4
R5
I1
I2
I3
I4
I5
I6
34
-
-
-
1
-
V1
-
-
-
AL
T-V1
-
-
-
L.P.
H.P.
35
-
-
-
2
-
V1
V2
-
-
AL
T-V1
T-V2
-
-
L.P.
H.P.
36
-
-
-
3
-
V1
V2
V3
-
AL
T-V1
T-V2
T-V3
-
L.P.
H.P.
37
-
-
-
4
-
V1
V2
V3
V4
AL
T-V1
T-V2
T-V3
T-V4
L.P.
H.P.
38
-
-
-
5
-
V1
V2
V3
V4
V5
T-V1
T-V2
T-V3
T-V4
T-V5
H.P.
39
1
1
-
1
-
C1
V1
-
-
AL
T-C1
T-V1
-
-
L.P.
H.P.
40
1
1
-
2
-
C1
V1
V2
-
AL
T-C1
T-V1
T-V2
-
L.P.
H.P.
41
1
1
-
3
-
C1
V1
V2
V3
AL
T-C1
T-V1
T-V2
T-V3
L.P.
H.P.
42
1
1
-
4
-
C1
V1
V2
V3
V4
T-C1
T-V1
T-V2
T-V3
T-V4
H.P.
43
1
2
-
1
-
C1
C1a
V1
-
AL
T-C1
T-V1
-
-
L.P.
H.P.
44
1
2
-
2
-
C1
C1a
V1
V2
AL
T-C1
T-V1
T-V2
-
L.P.
H.P.
45
1
2
-
3
-
C1
C1a
V1
V2
V3
T-C1
T-V1
T-V2
T-V3
L.P.
H.P.
46
1
3
-
1
-
C1
C1a
C1b
V1
AL
T-C1
T-V1
-
-
L.P.
H.P.
47
1
3
-
2
-
C1
C1a
C1b
V1
V2
T-C1
T-V1
T-V2
-
L.P.
H.P.
48
1
4
-
1
-
C1
C1a
C1b
C1c
V1
T-C1
T-V1
-
-
L.P.
H.P.
49
2
1
-
1
-
C1
C2
V1
-
AL
T-C1
T-C2
T-V1
-
L.P.
H.P.
50
2
1
-
2
-
C1
C2
V1
V2
AL
T-C1
T-C2
T-V1
T-V2
L.P.
H.P.
51
2
1
-
3
-
C1
C2
V1
V2
V3
T-C1
T-C2
T-V1
T-V2
T-V3
H.P.
52
2
2
-
1
-
C1
C1a
C2
C2a
V1
T-C1
T-C2
T-V1
-
L.P.
H.P.
53
3
1
-
1
-
C1
C2
C3
V1
AL
T-C1
T-C2
T-C3
T-V1
L.P.
H.P.
54
3
1
-
2
-
C1
C2
C3
V1
V2
T-C1
T-C2
T-C3
T-V1
T-V2
H.P.
55
4
1
-
1
-
C1
C2
C3
C4
V1
T-C1
T-C2
T-C3
T-C4
T-V1
H.P.
56
0
-
1
1
-
CV
V1
-
-
AL
T-VAR-C1
T-V1
-
-
L.P.
H.P.
57
0
-
1
2
-
CV
V1
V2
-
AL
T-VAR-C1
T-V1
T-V2
-
L.P.
H.P.
58
0
-
1
3
-
CV
V1
V2
V3
AL
T-VAR-C1
T-V1
T-V2
T-V3
L.P.
H.P.
59
0
-
1
4
-
CV
V1
V2
V3
V4
T-VAR-C1
T-V1
T-V2
T-V3
T-V4
H.P.
60
1
1
1
1
-
CV
C2
V1
-
AL
T-VAR-C1
T-C2
T-V1
-
L.P.
H.P.
61
1
1
1
2
-
CV
C2
V1
V2
AL
T-VAR-C1
T-C2
T-V1
T-V2
L.P.
H.P.
62
1
1
1
3
-
CV
C2
V1
V2
V3
T-VAR-C1
T-C2
T-V1
T-V2
T-V3
H.P.
63
1
2
1
1
-
CV
C2
C2a
V1
AL
T-VAR-C1
T-C2
T-V1
-
L.P.
H.P.
64
1
2
1
2
-
CV
C2
C2a
V1
V2
T-VAR-C1
T-C2
T-V1
T-V2
L.P.
H.P.
65
1
3
1
1
-
CV
C2
C2a
C2b
V1
T-VAR-C1
T-C2
T-V1
-
L.P.
H.P.
66
2
1
1
1
-
CV
C2
C3
V1
AL
T-VAR-C1
T-C2
T-C3
T-V1
L.P.
H.P.
67
2
1
1
2
-
CV
C2
C3
V1
V2
T-VAR-C1
T-C2
T-C3
T-V1
T-V2
H.P.
68
3
1
1
1
-
CV
C2
C3
C4
V1
T-VAR-C1
T-C2
T-C3
T-C4
T-V1
H.P.
12
L.P.
H.P.
In the case of floating condensation (F08=1), the highlighted inputs are configured as inputs for the
ambient temperature probe.
8
1454H502 Ed.03

Control of fan inverter
S1: Aspiration probe S2: Discharge probe
Control of compressor inverter
Probes S1 and S2 must be the same type (NTC, 4-20 mA or 0-5 V). They will be active depending on the INI value
selected.
Make the connection before plugging in the terminals to the equipment (see section 10.2).
5.- Wiring
The function of each relay output or digital input depends on the option chosen in the INI wizard (See page 5).
Location of the probes
15
12 16 13 17 14 18 19 20 21 22 23 24 25 26 27 28
15 16 17
14 18 19 20
I max.:
16 A
L N
I1 I2 I3 I4
I5
I6
Modbus*
Tr+
IN 1 S1
S3 (F08=1)
S3 (F08=1)
S1
II
S2
S2
NTC
IN 2
+15 V
+5 V
GND
Gnd
Tr-
0-10 V (³ 5KW) /
4-20 mA (£ 500W)
(C10)
S1
II
S2
4-20 mA
GND
+
+
+
4
15 26 37 8 9 10
15 16 17
14 18 19 20
15 16 17
14 18 19 20
15 16 17
14 18 19 20
15 16 17
14 18 19 20
11
AKO-14545
AKO-14545-C
R5
R1
R2
R3
R4
R1 R3
R2 R4
R5
S1 S1
0-5 V
S2 S2
IN 1
IN 1
IN 1
IN 2
IN 2 IN 2
+15 V
+15 V +15 V
+5 V
+5 V +5 V
GND
GND GND
IN 1
IN 2
+15 V
+5 V
GND
VV
VV
+
+
++
+
-
-
90-240 V~
50/60 Hz
S2
S3
S1
9
1454H502 Ed.03

6.- Location of the probes
6.1.- Proportional mode
WITHOUT FREQUENCY CONVERTER
The controller activates (red line) or deactivates (green line) the different stages/compressors available in a linear
manner depending on the reading obtained in probe1 until the Set Point(E01) is reached again, as shown in
the following figure.
WITH FREQUENCY CONVERTER
If there is a frequency converter, the frequency converter modulates the power of compressor1 between 0 and
100% (blue zone). If demand increases, the following compressor or stage (without converter) is added, again
modulating the power of compressor1 using the converter, and so on.
This method allows modulating the total power available using just one frequency converter.
In both cases, the delays t01 to t04 must be accounted for.
Stages /
Compressors
stage / compressor 1 ON
stage / compressor 2 ON
stage / compressor 3 ON
stage / compressor 4 ON
Bandwidth (E06)
Bandwidth (E06)
Bandwidth (E06)
Bandwidth (E06)
Direct
operation (C07=0)
E01
E01
E01
E01
Direct
operation (C07=0)
Inverse
operation (C07=1)
Inverse
operation (C07=1)
Pressure in Probe 1
Pressure in Probe 1
Total power applied
100%
0%
100%
0%
100%
0%
100%
0%
100%
0%
100%
0%
100%
0%
100%
0%
E06
n
E06
n
E06
n
E06
n
n: Number of stages/compressors available
n: Number of stages/compressors available
R2 R2R2 R2
R3 R3
R2 R2
R3 R3
R4 R4
10
1454H502 Ed.03

6.2.- Neutral zone mode
WITHOUT FREQUENCY CONVERTER
In this mode, a neutral zone is defined, whose lower limit is the Set Point minus the bandwidth, and whose upper
limit is the Set Point plus the bandwidth. While the reading of probe1 remains in that zone, no stages or
compressors are connected or disconnected.
If the upper limit is exceeded, the controller activates the different stages/compressors separated by the interval
defined in parameter t03 (red line) until returning to the neutral zone.
If the lower limit is exceeded, the controller deactivates the different stages/compressors separated by the interval
defined in parameter t04 (green line) until returning to the neutral zone.
In order to deactivate a stage/compressor, the interval t01 must have passed, and interval t02 defines the
minimum interval between starts of the same stage/compressor.
SP+E06
Upper limit
Lower limit
NEUTRAL ZONE
SP-E06
SP
Stages /
Compressors
stage / compressor 1 ON
stage / compressor 2 ON
stage / compressor 3 ON
stage / compressor 4 ON
t03 t03
t04 t04
Direct
operation (C07=0) Inverse operation (C07=1)
Pressure in Probe 1
E01 E01
11
1454H502 Ed.03

WITH FREQUENCY CONVERTER
Operation is the same as in the previous point, but modulating the power of compressor1 with the converter
while it remains in the neutral zone using a PIDcontrol.
Near the upper limit, the compressor operates at its maximum capacity, and if said limit is exceeded, more
stages/compressors are added, in accordance with the interval defined in t02, until returning to the neutral zone.
To avoid delays in the reaction of the installation, t02 time is halved in the compressor equipped with an inverter.
Near the lower limit, the compressor operates at its minimum capacity, and if said limit is exceeded, it stops. The
rest of the stages/compressors will stop, in accordance with the interval programmed in t01, until re-entering the
neutral zone, upon which compressor 1 activates again at its minimum capacity.
6.3.- Pump Down
It is only available if the type of operation is direct (C07=0).
When the pressure reaches the Set Point value (E01) in probe 1, the last stage/compressor remaining in operation
does not stop; it continues to reduce the pressure until reaching the value configured in parameter E08.
In the event of a failure, if the value of E08 is not reached, the controller will stop the compressor once the security
interval defined in E09 has passed, displaying the message “PdA” (an informative message that does not affect
the unit's operation).
For this function to be active, the parameter E08 must be configured below the Set Point (E01).
Upper limit
SP+E06
Pres / Temp (Probe 1)
Converter status:
NEUTRAL
ZONE
Lower limit
SP-E06
Time
SP
R1
R2
R4
R1
R2
R2
R3
R1
R2
R1
R2
R3
qQ
R3
R4
R3
100 %
100 %
0 %
OFF
(R1 OFF)
t02
t01
Example with the type of compressor rotation configured as sequential (E04=1)
12
1454H502 Ed.03

7.- Fan control
7.1.- Proportional mode
WITHOUT FREQUENCY CONVERTER
The controller activates (red line) or deactivates (green line) the different fans available in a linear manner
depending on the reading obtained in probe2 until the Set Point(E01) is reached again, as shown in the
following figure.
The delays t05 to t08 must be accounted for.
WITH FREQUENCY CONVERTER
If there is a frequency converter, the frequency converter modulates the power of the fans between 0 and 100%.
Fans active
Fan 1 ON
Fan 2 ON
Fan 3 ON
Fan 4 ON
Bandwidth (F06) Bandwidth (F06)
Direct
operation (C07=0)
F01 F01
Inverse
operation (C07=1)
Pressure in Probe 2
F06
4
F06
4
Fan power
Fans at 100%
Fans at 0%
Bandwidth (F06) Bandwidth (F06)
F01 F01
Direct
operation (C07=0) Inverse operation (C07=1)
Pressure in Probe 2
13
1454H502 Ed.03

7.2.- Neutral zone mode
WITHOUT FREQUENCY CONVERTER
In this mode, a neutral zone is defined, whose lower limit is the Set Point minus the bandwidth, and whose upper
limit is the Set Point plus the bandwidth. While the reading of probe2 remains in that zone, no fans are connected
or disconnected.
If the upper limit is exceeded, the controller activates the different fans separated by the interval defined in
parameter t07 (red line) until returning to the neutral zone.
If the lower limit is exceeded, the controller deactivates the different fans separated by the interval defined in
parameter t08 (green line) until returning to the neutral zone.
In order to deactivate a fan, the interval t05 must have passed, and interval t06 defines the minimum interval
between starts of the same stage/compressor.
SP+F06 Upper limit
Lower limit
NEUTRAL ZONE
SP-F06
SP
Fans
Fan 1 ON
Fan 2 ON
Fan 3 ON
Fan 4 ON
t07 t07
t08 t08
Direct
operation (C07=0) Inverse operation (C07=1)
Pressure in Probe 2
F01 F01
14
1454H502 Ed.03

1454H502 Ed.03
WITH FREQUENCY CONVERTER
Operation is the same as in the previous point, but modulating the power of the fans with the converter while it remains
in the neutral zone using a PIDcontrol.
Near the upper limit, the fans operate at their maximum capacity, and if said limit is exceeded, the capacity is kept at its
maximum until returning to the neutral zone.
Near the lower limit, the fans operate at their minimum capacity, and if said limit is exceeded, they stop until returning
to the neutral zone, upon which they activate again at their minimum capacity.
7.3.- Floating condensation
The controller modulates the evaporation Set Point taking into account the ambient temperature (requiring
connecting probe3) and the power of the compressors.
This type of control improves the COP (the relationship between cooling power and consumed electrical energy)
and hence increases the energy performance of the installation.
This mode is only valid if the fans of the condenser are controlled, with or without a frequency converter.
7.4- Alarms
IMPORTANT: The alarms that cause compressors and fans to stop will do so in a sequential manner,
with a delay of 5seconds between stops.
LOW AND HIGH PRESSURE ALARM DUE TO DIGITAL INPUT
When the digital input I5 or I6 is activated, the message HPA (High) or LPA (Low) is shown on
screen, the alarm relay is activated (if available) and the compressors are stopped.
If the alarm is due to low pressure, the fans stop; if it is due to high pressure, the fans activate
regardless of parameter F07.
If the cause that triggered the alarm disappears, the installation returns to its standard operation.
Parameter A09 defines the number of high-pressure alarms allowed per hour. If this value is
exceeded, the unit must be manually reset by pressing the Q key in order for it to return to its
standard operation, once the cause that triggered the alarm has disappeared.
This requires the parameters I07 or I08 to be set to 0 or 1.
When the readings return to their normal values, the alarm relay deactivates but the R indicator remains on until
the Qkey is pressed.
Upper limit
SP+E06
Pres / Temp (Probe 2)
Converter status
NEUTRAL
ZONE
Upper limit
SP-E06
Time
SP
100 %
100 %
0 %
OFF
(R1 OFF)
PRES
TEMP
PRES
TEMP
15

LOW AND HIGH PRESSURE ALARM DUE TO PROBES 1 AND 2
If the reading in probe 1 reaches the value set for parameter A03, the message ALL (Low
pressure) is displayed on screen, the alarm relay (if available) is activated and the compressors and
fans stop.
This alarm differential is established in parameter A04.
If the reading in probe 1 reaches the value set for parameter A05, the message ALH (High
pressure) is displayed on screen,the alarm relay (if available) is activated and the compressors and
fans stop.
This alarm differential is established in parameter A06.
When the readings return to their normal values, the alarm relay deactivates but the Rindicator remains on until
the Qkey is pressed.
PROTECTION ALARMS
If one of the thermal protections goes off (digital inputs I1 to I5, according to the configuration),
the message At1... is displayed on screen At5, the associated element (compressor or fan) stops
and the alarm relay activates (if available).
Once the protection is reset, the installation returns to its standard operation, but the alarm relay remains activated
until the Qkey is pressed.
SEVERE EXTERNAL ALARM
When the digital input configured as a severe external alarm (I07 or I08=4) is activated, the
screen displays the messageAES, the compressors and fans stop and the alarm relay activates.
Once the cause that triggered the alarm disappears, the installation returns to its standard
operation, but the R indicator remains activated until the Qkey is pressed.
PROBE 1, 2 or 3 ERROR
If an error occurs in probes1,2or3 (disconnection, cross-over or probe out of range), the
screen displays the messages E1, E2 or E3 respectively, the alarm relay activates and the
compressors and fans go on to operate according to parameters A01 and A02.
Once the cause that triggered the alarm disappears, the installation returns to its standard operation, but the R
indicator remains activated until the Qkey is pressed.
DEPROGRAMMED CLOCK ALARM
If the unit remains without electrical supply for a period longer than 6hours, or upon its first start-
up, the screen displays the message Ar, indicating that the internal clock is deprogrammed. The
unit will continue its standard operation, but if the energy save mode has been activated, it will
not start. In order to set the date and time again, adjust parametersr01 to r05. Activates the alarm relay.
PUMP DOWN ALARM STOPPED DUE TO TIME
If, during pump down, the maximum interval configured in E09 passes before the stop value
specified by E08 is reached, the last stage will stop and the messagePdA will be displayed. Does
not activate the alarm relay.
PRES
TEMP
PRES
TEMP
PRES
TEMP
PRES
TEMP
PRES
TEMP
PRES
TEMP
PRES
TEMP
16
1454H502 Ed.03

1454H502 Ed.03
Alarm delay
These delays prevent the display of specific alarms while allowing the unit to recover normal operation after certain
events.
-Delays in start-up (A08): Delays the activation of the alarms upon receiving power supply (start-up or after a
fault in the power supply). This allows starting up the installation avoiding constant alarm statuses.
-Alarm delay (A07): It delays the activation of the high and low pressure alarms (A03 and A05) from the time
that the programmed values are reached.
-Turn-on delay time of alarms due to digital input 5 (I09): It delays the activation of activated alarms due to
digital input 5. The type of alarm to be activated depends on the configuration of parameter I07. It does not take
effect if parameter I07 is set to 2 (Thermal alarm).
-Turn-on delay time of alarms due to digital input 6 (I10): It delays the activation of activated alarms due to
digital input 6. The type of alarm to be activated depends on the configuration of parameter I08. It does not take
effect if parameter I08 is set to 2 (Thermal alarm).
7.5.- Remote disconnection
This function allows stopping/starting regulation with an external signal via the digital input 5 or 6.
The digital input 5 or 6 must be configured as a remote disconnection (I07 or I08=5).
When stopping or starting regulation, the compressors / stages and fans will stop or start in accordance with the
timings set in parameters t01 to t08.
8.- Connectivity
The AKO-14545-C model has a port for connection of RS485 (MODBUS) data, that allows remotely managing them
using a PC with the AKONet software or an AKO-5011 server.
A different address must be assigned to each unit on the same network. This address is defined by parameter P5.
Other AKO equipment
with comunications
AKO-80039
PC +
AKONet
Tr-
Gnd
Tr+
AKO-5011
LAN
26 27 28
AKO-14545-C
ESC ?
SET
AKOCAM
Alarm delay
These delays prevent the display of specific alarms while allowing the unit to recover normal operation after certain
events.
-Delays in start-up (A08): Delays the activation of the alarms upon receiving power supply (start-up or after a
fault in the power supply). This allows starting up the installation avoiding constant alarm statuses.
-Alarm delay (A07): It delays the activation of the high and low pressure alarms (A03 and A05) from the time
that the programmed values are reached.
-Turn-on delay time of alarms due to digital input 5 (I09): It delays the activation of activated alarms due to
digital input 5. The type of alarm to be activated depends on the configuration of parameter I07. It does not take
effect if parameter I07 is set to 2 (Thermal alarm).
-Turn-on delay time of alarms due to digital input 6 (I10): It delays the activation of activated alarms due to
digital input 6. The type of alarm to be activated depends on the configuration of parameter I08. It does not take
effect if parameter I08 is set to 2 (Thermal alarm).
7.5.- Remote disconnection
This function allows stopping/starting regulation with an external signal via the digital input 5 or 6.
The digital input 5 or 6 must be configured as a remote disconnection (I07 or I08=5).
When stopping or starting regulation, the compressors / stages and fans will stop or start in accordance with the
timings set in parameters t01 to t08.
8.- Connectivity
The AKO-14545-C model has a port for connection of RS485 (MODBUS) data, that allows remotely managing them
using a PC with the AKONet software or an AKO-5011 server.
A different address must be assigned to each unit on the same network. This address is defined by parameter P5.
+
RS-485
GND
17

9.- Parameter setup
Through the programming menu users can set different parameters to adjust the operation of the controller to the
needs of their installation.
9.1.- Programming Menu
It allows changing the unit's operating parameters.
To access the programming menu, press the SET button for 10 seconds, or until the "PRG" appears on the screen.
IMPORTANT: If the password function has been configured, the system will demand entering the
password programmed in L5. If the entered password is not correct, the unit will go back to showing
the temperature.
After 20 seconds with no key being pressed, the equipment will return to the previous level. If you are on level 3,
the changes will not be saved.
Level 2
Parameters
Change
parameters
ESC
ESCESC
Level 3
Values
Save changes
Don’t save changes
OK
20 sec.
20 sec.20 sec.
OKOK
OK
OK
Change
value
SET
SET
SET
SET
SET
SET
Level 1
Menus
Change
menu
Temperature
Indication
10 sec.
OUT OF
PROGRAMMING PROGRAMMING
18
1454H502 Ed.03

9.2.- Parameters
The unit's operation parameters are organized into groups or families according to their function.
The Def. column shows factory-set default parameters.
The pressure values featured on the table are expressed in bar and those for temperature in ºC. If the wizard
meanwhile selects another set of units (parameter C09), the unit will make the conversion automatically.
IMPORTANT: C01, C02, C04, C05, C06, C08 and C09 are read-only parameters, editable using the
INI wizard only.
Level 1.- INSTALLATION CONFIGURATION
Level 1.- EVAPORATION CONFIGURATION
Description
Units
Min
Def
Max.
C01
Total number of compressors (with or without inverter)
-
-
-
C02
Number of stages per compressor
-
-
-
C03
Polarity of the capacity reduction contact
0=Active when closing the contact; 1=Active when opening the contact
0
0
1
C04
Compressor 1 with frequency inverter 0=No; 1=Yes
-
-
-
C05
Total number of fans (1 inverter only is considered with inverter)
-
-
-
C06
Fan control type 0=ON/OFF; 1=Frequency inverter
-
-
-
C07
Operation type 0=Direct; 1=Inverse
0
0
1
C08
Refrigerant gas type: 0=R134a 1=R404a 2=R717a 3=R22 4=R410a 5=R507a
6=R744 7=R407a 8=R407f 9=R1234y 10=R448a 11=R449a 12=R450a
13=R454A 14=R454C 15=R455A 16=R1234ze 17=R515b 18=R452A 19=R452b
-
-
-
C09
Display units (Primary-Secondary) 0=bar-ºC 1=psi-ºF
2=psi-ºC 3=bar-ºF 4=ºC-bar 5=ºF-psi 6=ºC-psi 7=ºF-bar
-
-
-
C10
Frequency inverter output type 0=4-20 mA; 1=0-10 V
0
0
1
InI
This indicates the configuration selected in the wizard (read only)
-
-
-
EP
Output to level 1
Description
Units
Min
Def
Max.
E01
Pressure / evaporation temperature set point
bar
E03
5
E02
E02
Evaporation set point upper limit (It cannot be set above this limit)
bar
E03
75
75
E03
Evaporation set point lower limit (It cannot be set below this limit)
bar
-0.7
-0.7
E02
E04
Compressor rotation type: 0=Balancing, depending on the operation time
1=Sequential (the last in is the first out)
0
0
1
E05
Compressor control type: 0=Neutral zone; 1=Proportional
0
0
1
E06
Evaporation regulation bandwidth
bar
0.0
2.0
50
E07
Integral time (PID inverter control)
sec.
2
5
10
E08
Stop value for pump down (If C07=0)
bar
-0.7
0.1
*
E09
Maximum pump down time (If C07=0) (0= deactivated)
sec.x10
0
0
255
EP
Output to level 1
Level 2Level 2
* Depending on the compressor control type: Proportional=E01; Neutral zone=E01-E06.
19
1454H502 Ed.03

Level 1.- CONDENSATION CONFIGURATION
Level 1.- PROBE CONFIGURATION
Description
Units
Min
Def
Max.
F01
Condensation pressure / temperature set point
bar
F03
19
F02
F02
Condensation set point upper limit (It cannot be set above this limit)
bar
F03
75
75
F03
Condensation set point lower limit (It cannot be set below this limit)
bar
-0.7
-0.7
F02
F04
Fan rotation type: 0=Balancing, depending on the operation time
1=Sequential (the last in is the first out)
0
1
1
F05
Fan control type: 0=Neutral zone; 1=Proportional
0
0
1
F06
Condensation regulation bandwidth
bar
0.0
2.0
50
F07
For fans when the compressors stop 0=No; 1=Yes
0
0
1
F08
Floating condensation 0=No; 1=Yes
0
0
1
F09
Integral time (PID inverter control)
sec.
2
5
10
F10
Floating condensation minimum set point value ( see remark 1)
ºC
-50
28
99.9
F11
Condenser temperature delta
ºC
6
12
20
EP
Output to level 1
Description
Units
Min
Def
Max.
P01
Probe type selection 0=4-20 mA; 1=0-5 V; 2=NTC
0
0
2
P02
Probe to be displayed: 0=Probe 1 (Aspiration) 1=Probe 2 (Discharge);
2=Probes 1 and 2 in carousel
0
0
2
P03
Value 4 mA / 0 V (according to P01) probe 1
bar
-60
-60
999
P04
Value 20 mA / 5 V (according to P01) probe 1
bar
-60
999
999
P05
Probe 1 calibration (Offset)
bar
-20
0
20
P06
Value 4 mA / 0 V (according to P01) probe 2
bar
-60
-60
999
P07
Value 20 mA / 5 V (according to P01) probe 2
bar
-60
999
999
P08
Probe 2 calibration (Offset)
bar
-20
0
20
P09
Calibration of the outside temperature probe for floating condensation
ºC
-20
0
20
EP
Output to level 1
Level 2Level 2
Remark 1: The equivalent value in pressure is calculated depending on the refrigerant gas specified in the wizard.
20
1454H502 Ed.03