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351652602 Ed. 03

33

Alarms

Level 1

Level 2

Description

Values Min. Def. Max.

AL

A0

Configuration of the temperature alarms  0=relative to SP 1=absolute

0

1

1

A1

Alarm for maximum in sensor 1 (it must be higher than the SP)

ºC/ºF

A2 99.0 99.0

A2

Alarm for minimum in sensor 1 (it must be lower than the SP)

ºC/ºF -50 -50 A1

A3

Delay of temperature alarms in the start-up

min.

0

0

120

A4

Delay of temperature alarms from the end of a defrost

min.

0

0

99

A5

Delay of temperature alarms from when the A1 or A2 value is reached

min.

0

30

99

A6

Delay of external alarm/severe external alarm on receiving digital input signal
(I10 or I20=2 or 3)

min.

0

0

120

A7

External alarm deactivation delay/severe external alarm on
disappearance of signal at digital input (I10 or I20=2 or 3)

min.

0

0

120

A8

Show warning if the defrost ends for maximum time 0=no 1=yes

0

0

1

A9

Polarity relay alarm 0=relay ON in alarm (OFF without alarm);
1=relay OFF in alarm (ON without alarm)

0

0

1

A10

Differential of temperature alarms (A1 and A2)

ºC/ºF 0.1 1.0 20.0

A12

Delay of open door alarm (if I10, I20 or I30=1)

min.

0

10 120

A20

Minimum superheating value for LSH alarm 

K

0

2

SH

A21

LSH alarm activation delay 

sec.

0

30 240

A22

LSH alarm hysteresis

K

0.1

2

Sh-

A20

A23

Maximum overheating value for LSH alert

K

sh

40

40

A24

Delayed activation of the HSH warning 

s

0

30 240

A25

HSH alarm deactivation hysteresis 

K

0.1

2

A23-

sh

A26

Maximum evaporating pressure (MOP) 

bar

0

60

60

A27

MOP alarm activation delay (delay time for activating alarm after threshold 
has been exceeded)  

sec.

0

30 240

A28

MOP alarm deactivation hysteresis (when the pressure drops below the 
MOP-hysteresis level the alarm is deactivated) 

bar

0.1

1

60

A29

Minimum evaporating pressure (LOP) 

bar

-1

0

8

A30

LOP alarm activation delay (delay time for activating alarm after threshold has 
been exceeded)

sec.

0

30 240

A31

LOP alarm deactivation hysteresis (when the pressure exceeds the
LOP-hysteresis level the alarm is deactivated) 

bar

0.1

1

8

EP

Output to level 1

Summary of Contents for AKO-16526

Page 1: ...351652602 Ed 03 EN AKO 16526 Temperature and electronic expansion controller for cold room store User manual...

Page 2: ...mec nica 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...

Page 3: ...e used in a place without heat influences apart from the tem perature you want to measure or control The IP65 protection degree is only valid with the protection cover closed The IP65 protection degre...

Page 4: ...LIQUID SOLENOID THERMOSTATIC EXPANSION VALVE EVAPORATOR CONDENSER S1 FAN COOL D1 AUX 1 S2 PAR METROS Tipo de v lvula u00 Solenoide 0 Sondas conectadas I00 Temp c mara temp Evap 2 Configuraci n D1 S3...

Page 5: ...sonda S6 I61 1 2 3 o 4 Rel AUX 1 o00 Compresor Res c rter 1 LIQUID CONTAINER COMPRESSOR FREQUENCY CONVERTER CONDENSER EVAPORATOR S1 S2 S5 S6 FAN AN OUT COOL D1 AUX 1 ON OFF Reg 4 20 mA 0 10 V PWM VAL...

Page 6: ...something is preventing them from activating Pulsing evaporator fans controlled by analogue output Constant the COOL relay is active Flashing the COOL relay should be active but a delay or protection...

Page 7: ...deactivates the cold room light Pressing it for 3 seconds accesses the condensed programming menu Pressing it for 6 seconds accesses the expanded programming menu In the programming menu it accesses t...

Page 8: ...box Mark and make the holes in the wall with the aid of the template included Fix the device to the wall If it is a brick wall use the screws and plugs supplied if the wall is made of sheet metal col...

Page 9: ...for relay or contactor outputs should have a section of 2 5mm2 allow working temperatures equal to or over 70 C and be installed with as little bending as possible The 120 230 V wiring area must be ke...

Page 10: ...the fan control is ON OFF F10 0 or an external frequency inverter is used for ventilation F10 1 The second option is only available if a STEPPER type electronic expansion valve u00 2 is not used Anal...

Page 11: ...0 0 0 0 20 0 0 2 Yes Yes Electric Yes 1 1 2 7 1 0 0 20 0 0 3 Yes No Electric Yes 0 1 2 0 0 0 0 20 0 0 4 No No Air Yes 0 0 1 0 0 0 0 20 1 1 5 Yes Yes Air Yes 1 1 1 7 1 0 0 20 1 1 6 Yes No Air Yes 0 1...

Page 12: ...u02 4 R410A u02 5 R450A u02 6 R513A u02 7 R744 u02 8 R449A u02 9 R290 u02 10 R32 u02 11 R448A u02 12 R1234ze u02 13 R23 u02 14 R717 u02 15 R407C u02 16 R1234yf u02 17 R22 u02 18 R454C u02 19 R455A u0...

Page 13: ...controller stops See page 17 Operation Messages 10 SET 11 SET 12 SET Pump down malfunction error Stop The time configured in parameter C20 has been exceeded See page 17 Only displayed on screen Pump d...

Page 14: ...d the audible alarm Minimum superheat alarm The value set in A20 has been reached See page 25 Acti vates the alarm relay and the audible alarm Minimum superheat alert The value defined in A23 has been...

Page 15: ...pressure in the evaporator to increase and therefore the low pressure switch deactivates and the compressor starts up Once the set point SP value is reached the solenoid closes causing the pressure in...

Page 16: ...line of the display by default Parameter b23 defines which value is displayed on that line When there is no cooling required the superheat value is not updated as the regulation is stopped When the c...

Page 17: ...ressor will not stop until the low pressure switch is activated but it will display the Pd message after 15 minutes START When the temperature in sensor S1 reaches the set point value plus the differe...

Page 18: ...oned value may be negative or positive which allows for the Set Point to be reduced or increased If it is configured in 0 the mode is disabled It is activated in three possible ways By means of an ext...

Page 19: ...e controlled should the cold room door open through parameters C22 and C23 Parameter C22 defines whether cold production should be stopped if the door opens If C22 1 when the door opens the fans stop...

Page 20: ...m change parameter F3 to 0 The compressor and solenoid are stopped Hot gas InI 7 and 8 d7 2 The hot gas from compressor discharge is used to melt evaporator ice and to this end two valves are necessar...

Page 21: ...start up delay This is established through parameter F4 and allows for the possible drops left in the evaporator to freeze before the fans activate preventing them from being projected into the cold r...

Page 22: ...porator defrost o10 4 Defrost begins simultaneously in both evaporators When the sensor of evaporator 1 reaches the temperature defined in d4 the DEF relay deactivates completing defrost of evaporator...

Page 23: ...C22 defines whether fans stop when the door is opened ON OFF control F10 0 This type of control starts or stops the fans depending on the temperature at sensor S2 If F2 0 the fans start when the tempe...

Page 24: ...and will deactivate when 10 degrees are reached If A0 1 absolute the maximum temperature alarm will activate when 10 degrees are reached in sensor 1 and will deactivate when 8 degrees are reached Exte...

Page 25: ...door alarm is activated In order to detect the open door configuration is required of one of the digital inputs as door contact l10 l20 or l30 1 Activates alarm relay and audible alarm Minimum superhe...

Page 26: ...OFF without alarm A9 1 Relay inactive OFF in the event of an alarm ON without alarm Alerts The device alerts the user through an on screen message when an event occurs which requires his her attention...

Page 27: ...and deactivated by means of AKONet software AUX 2 relay Deactivated o10 0 does not carry out any function Alarm o10 1 this activates the relay every time that an alarm occurs See page 24 Light o10 2...

Page 28: ...defrost duration 0 defrost deactivated min 0 255 d4 Final defrost temperature by sensor If I00 1 C F 50 8 0 50 SH Superheating set point K 0 1 8 40 F3 Status of the fans during the defrost 0 stopped 1...

Page 29: ...enter the password programmed in PAS when attempting to access either of the two functions If the entered password is not correct the unit will go back to showing the temperature IMPORTANT certain pa...

Page 30: ...e of relay ON if sensor 1 damaged if C7 0 and C8 0 the relay will always be OFF when disconnected min 0 10 120 C8 Time of relay OFF if sensor 1 damaged if C8 0 and C7 0 the relay will always be ON whe...

Page 31: ...d6 0 0 1 d6 Delay of the defrost start on connecting the unit min 0 0 255 d7 Type of defrost 0 resistors 1 air fans 2 hot gas 0 2 d8 Time calculation between defrost periods 0 total real time 1 sum o...

Page 32: ...lue D 0 0 100 u07 Opening value of the electronic expansion valve when cooling is activated u13 50 u12 u08 Duration of valve opening on cooling demand s 2 5 240 u09 Valve opening value with sensor err...

Page 33: ...F without alarm 1 relay OFF in alarm ON without alarm 0 0 1 A10 Differential of temperature alarms A1 and A2 C F 0 1 1 0 20 0 A12 Delay of open door alarm if I10 I20 or I30 1 min 0 10 120 A20 Minimum...

Page 34: ...ation 0 deactivated 1 door contact 2 external alarm 3 severe external alarm 4 change SP 5 remote defrost 6 defrost lockout 7 low pressure switch 8 remote activation in Stand by mode 9 product temperat...

Page 35: ...noid status 7 equal device status 0 2 7 o20 AUX 3 relay configuration 0 deactivated 1 alarm 2 light 3 external AO controller ON OFF 4 defrost 2nd evaporator 5 resistor door frame 0 0 5 o30 Analogue ou...

Page 36: ...m 0 Terminating resistors are not required SECURE CONTROL Connectivity The controllers are equipped with a port for connection of RS485 MODBUS data which allows for remote manage ment of these using...

Page 37: ...y 1 C Tolerance of the NTC probe at 25 C 0 4 C Input for NTC probe AKO 14901 Working ambient temperature 10 C to 50 C Ambient storage temperature 30 C to 60 C Protection degree IP 65 Installation cate...

Page 38: ...351652602 Ed 03 38...

Page 39: ...351652602 Ed 03 39...

Page 40: ...vda Roquetes 30 38 08812 Sant Pere de Ribes Barcelona Spain www ako com We reserve the right to supply materials slightly different to those described in our data sheets Updated information on our web...

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