Danfoss Controller type AKC 121A. Vers. 2.3x. AKA 21 Installation guide
- Category
- Thermostats
- Type
- Installation guide
REFRIGERATION AND
AIR CONDITIONING
Controller
AKC 121A
Menu operation via AKA 21
2 Menu operation RC.1M.A5.02 © Danfoss 05/2004 AKC 121A Version 2.3x
System survey
A refrigerating plant fi tted with ADAP-KOOL
®
refrigeration controls will mostly consist of several
controllers or monitoring units, where each controller will regulate its own refrigeration appliance/
cold room.
The system has been designed in such a way that contact can be made to each and every controller
via a data communication system. One specifi c controller is selected, and it will now be possible to
make settings and readouts for this unit.
The individual monitoring units type AKC 121A can be
operated in two ways:
1. With control panel type AKA 21.
Use this document when operation takes place in this way.
2. With PC and system software type AKM.
Operation
Validity
This menu operation (dated Mai 2004), applies to AKC 121A with the code number 084B2051
fi tted with software version 2.3x.
AKC 121A Version 2.3x Menu operation RC.1M.A5.02 © Danfoss 05/2004 3
All controllers that are connected to the same network can be operated with the control panel. There
may be as many as 125 controllers, and they are shown in groups of 16 on the display.
A system is shown here which consists of more than 16 controllers. The meaning of the letters is, as
follows:
A: AKC or AKL controller
E: Controller with active ERROR (on addresses 2, 11 and 12 in this example)
g: Gateway (to addresses 13 and 14 in this example)
G: Gateway with connected printer
: A blank fi eld indicates that there is no unit with this address.
Select the unit that is to be operated by using the “+/On” or “-/Off ” key, and push “Enter”. In this
example you select the controller with address 4.
If the system comprises more than 16 units or units with an address code higher than 16, you may
change to the next group by pushing "→".
When a controller has been selected, you can make settings in it. This setting is performed, as follows:
Shown in the upper right corner of the display is the setting with which the controller is operating.
Below that value a new setting may be made. Use the three keys “+/ON”, “-/OFF” and “Digit” for setting
the new value. This new value will not govern the regula tion until you push the key “Enter”.
Select a controller
Settings of a controller
5
-50 to +50 5
ON
OFF / ON ON
The functions in the controller can be protected by means of an access code. Depending on the
settings to be made, you may gain access in one of the following ways:
User input: Gives access to:
1. Push F1 Display of alarms
2. Push F2 Readout of actual values
3. Code 1 and then F1 Acknowledgement of alarms
Code 1 and then F3 Setting of selected parameters
4. Code 2 Operation of all settings of the entire menu system
(with system software type AKM there is access to
additional functions).
Pages 6 and 7 contain a description of how you gain access to the system via a code.
Access to a controller
1 < 1 > 16
AEAAAAAAAAEEgg A
1 < 4 > 16
AEAAAAAAAAEEgg A
17 < 17 > 32
AAA
4 Menu operation RC.1M.A5.02 © Danfoss 05/2004 AKC 121A Version 2.3x
A supporting text is attached to the individual functions. When such a function is shown in the control
panel’s display, the supporting text can be obtained by pushing the key “Help”. The supporting text is
intended as a help to users who no longer use these operating instructions.
In the menus shown below functions with supporting texts are identifi ed with the word “Help” next to
the function.
When an error appears in a system, it can be seen on the control panel’s display which will show an “E”.
If the control panel shows a text from a selected controller, the LED at the word “Alarm” will fl ash.
When an error has occurred, fi rst select the controller on which the error is registered. When the
controller has been found, push “F1”, and the error message will appear.
At the end of the document there is a list of all the error messages and a description of how to
acknowledge an alarm.
1 < 2 > 16
AEAAAAAAAAAAgg A
AKC 121A Adr: 2
E Mon-11:27
Standby Mode
When one controller has been selected from the total system, the following display will appear (the
display is the fi rst one shown when you have selected an address from the total system):
e.g.
AKC 121A Adr: 2
E Mon-11:27
From this position you can freely choose between several forms of operating levels:
1. Display of alarms - push “F1”
2. Display and setting of a few selected functions - push “F2”
3. Display and setting of several selected functions - push “F3”
The function may be protected with a code (code 1)
4. Display and setting of all allowed functions in the control ler. The function may be protected with a
code (code 2).
Operation of the individual levels is shown below:
When you push “F1” the alarm messages from the controller in question appear. Only active alarms
are shown. With a push on "↓" you can see whether there are more alarm messages, and if so, their
texts.
When an alarm has been localised and corrected, the alarm is acknowledged (removed from the
system, so that it no longer appears). In large systems where a gateway is also connected this
acknowledgement will take place automatically. In other systems it has to be done manually, cf. end
of the document.
Prior to the acknowledgement of the alarm, the keying of a code is required, see page 6.
Leave the F1 function by pushing "←".
Supporting text
How to localise an error
Functions of a controller
1. F1
AKC 121A Version 2.3x Menu operation RC.1M.A5.02 © Danfoss 05/2004 5
When you push “F2” a number of functions will appear where it is possible to read or set values.
You can move to and from the individual functions by pushing "↑" or "↓". On page 3 you can see how a
setting i changed.
Man. Def Manual defrost is activated when ON
ON/OFF (changes automatically to OFF)
6:03:01
CutOut °C A Setting of thermostat cutout value section A
-50 - 50
3:03:02
CutOut °C B Setting of thermostat cutout value section B
-50 - 50
4:03:01
Ther. Air A Actual air temperature for thermostat in section A
3:02:01
Ther. Air B Actual air temperature for thermostat in section B
4:02:01
S3 °C A Temperature at S3 sensor section A
3:02:03
S3 °C B Temperature at S3 sensor section B
4:02:03
S4 °C A Temperature at S4 sensor section A
3:02:04
S4 °C B Temperature at S4 sensor section B
4:02:04
S5°C A Temperature at S5 sensor section A
3:02:05
S5 °C B Temperature at S5 sensor section B
4:02:05
Leave the F2 function by pushing "←".
2. F2
6 Menu operation RC.1M.A5.02 © Danfoss 05/2004 AKC 121A Version 2.3x
When you push “F3”, a number of functions will appear which are used when the system is serviced.
• If access code is used (code 1), key it as follows:
- Push the “key”
- Enter the code by using the three keys “+”, “-” and “Digit” (the code is mentioned later as code
1, and the factory setting is 40. If code 2 has been set at 0, access code 1 cannot be used).
- Push “Enter”
- Push “F3”
Move to and from the individual functions by pushing "↑" or "↓".
On page 3 you can see how a setting is changed.
Main Switch Main switch: 1: Regulation
-1 / 0 / 1 0: Controller stop
2:02:01 -1: Service
RegCond A Regulating condition for section A
3:02:10 0: No cooling 5: Awaiting defrost stop on last section
1: Cooling 6: Forced closing
4: Defrosting 8: Emergency cooling (sensor failure)
10: Forced cutout (Melt function)
RegCond B Regulating condition for section B
4:02:10 0: No cooling 5: Awaiting defrost stop on last section
1: Cooling 6: Forced closing
4: Defrosting 8: Emergency cooling (sensor failure)
10: Forced cutout (Melt function)
NightCond Status of day/night function
3:02:11 Off = “day” and ON = “night”
OD % A Modulating: Refrigeration requirement in section A
3:02:08
OD % B Modulating: Refrigeration requirement in section B
4:02:08
Run Time A ON/OFF: Present refrigeration period (thermostat cutin) or duration
3:02:09 of last completed period, section A.
Run Time B ON/OFF: Present refrigeration period (thermostat cutin) or duration
4:02:09 of last completed period, section B
DefTime A Actual defrost cutin time or duration of the latest fi nished
6:02:02 defrosting period in section A
DefTime B Actual defrost cutin time or duration of the latest fi nished
6:02:04 defrosting period in section B
Leave the function by pushing "←".
3. F3
AKC 121A Version 2.3x Menu operation RC.1M.A5.02 © Danfoss 05/2004 7
4. Access to all
functions
The access to the functions may be protected with a code (code 2).
• If access code is used, key it as follows:
- Push the “key”
- Enter the code by using the three keys “+”, “-” and “Digit”
- Push “Enter”
- Push "←"
Move to and from the individual functions by pushing the four arrow keys.
On page 3 you can see how a setting is changed.
When you wish to leave the “Access to all functions” function, push “Clear” and then "←".
List of functions on level 1:
1. Controller’s access picture and access to system information
2. Switch and selection of language
3. Measurements and confi gurations for section A
4. Measurements and confi gurations for section B
5. Common settings for section A and B
6. Defrost function
7. Confi guration
8. Forced-control functions for service
9. Alarm destinations
Below and on the following pages the individual functions are shown together with a brief
description:
Level 1 Level 2 Level 3 Level 4 Description
AKC 121A Adr:
xxx Controller access display
Mon hh:mm If the code function is used, continue by pushing the “key” key
Enter Code Entry of access code 1 or access code 2 (cf. also 1:07 and
0 - 255 0 1:08). Continue by pushing “arrow left”
1:01
AKC 121A Adr:
xxx Access to system information
Mon hh:mm If an E appears in the display, an error has been registered.
1
Code No. Reading of the controller’s code no. and programme version.
Prog. Ver.
1:02
|
Clock: Setting of controller clock (AKC clock)
Mon hh:mm
1:03
Clock: Day. Setting of day (1 = Monday, 7 = Sunday)
Mon(1) Sun(7)
1:03:01
|
Clock: Hour Setting of hours
0 - 23
1:03:02
|
Clock: Min. Setting of minutes
0 - 59
1:03:03
|
System Address Reading of the controller’s system address
Addr. yyy xxx yyy=network no. and xxx=address.
1:04 The system address can only be set via PC
|
Alarm report to Reading of the alarm address (end receiver) the alarms are
Addr. yyy xxx to be sent to.
1:05 The alarm address can only be set via PC.
|
Gateway
Address Reading of the address on the nearst gateway which has to
xxx eff ect alarms (see 1:05)
1:06 The address can only be set via PC
8 Menu operation RC.1M.A5.02 © Danfoss 05/2004 AKC 121A Version 2.3x
|
Chg. Code1 Change of code 1. The code gives access to akknowlegdement of
0 - 255 active alarm by means of the F1 key.
1:07 Also access to the selected settings/readouts via the F3 key.
| (Factory setting = 40) (See also code 2)
Chg. Code2 Change of code 2. The code gives access to the whole
0 - 255 menusystem.
1:08 (Factory setting = 0. Setting = 0 off ers free access where
neither code 1 nor code 2 is required)
|
Main Function Main function
2
Alarm Message In case of alarm, an E is shown on the display
2:01 (error log becomes visible)
See page 18, check of error log
2:01:01
|
Main Function Access to the main switch
Settings
2:02
Main Switch Main switch: 1: Regulation
-1 / 0 / 1 Help 0: Controller stop
2:02:01 -1: Service
|
Language Selection of language. Six languages have been entered
0 - 6 Help in the controller
2:02:02 0: English 3: Danish
1: German 4: Spanish
2: French 6: Swedish
NB! This function must be set prior to any uploading to
systemsoftware type AKM.
When the language code has been changed, push “ENTER”
and then “Clear”.
|
Controller A Measurements and confi gurations for section A
3
Alarm messsage In case of alarm, an E is shown on the display
3:01 (error log becomes visible)
See page 18, check of error log
3:01:01
|
Thermostat Readout of measuring values related to section A
Measurements
3:02
Ther. Air A Actual air temperature for thermostat in section A
3:02:01
|
Weighted A Weighted display
3:02:02 The measured temperatures from S3 and S4 are shown with
| the calculation defi ned in S4 Day % (3:3:4) or S4 Night % (3:3:5)
|
S3 °C A Temperature at S3 sensor section A
3:02:03
|
S4 °C A Temperature at S4 sensor section A
3:02:04
|
S5°C A Temperature at S5 sensor section A
3:02:05
|
Cut In °C A Actual thermostat cutin value section A
3:02:06
|
CutOut °C A Actual thermostat cutout value section A
3:02:07
|
OD % A This and the next readout depend on the thermostat selected under
3:02:08 “7:1”. There will only be a readout on one of the display units:
| Modulating: Refrigeration requirement in section A
Run Time A ON/OFF: Present refrigeration period (thermostat cutin) or duration
3:02:09 of last completed period, section A.
AKC 121A Version 2.3x Menu operation RC.1M.A5.02 © Danfoss 05/2004 9
|
RegCond A Regulating condition for section A
3:02:10 0: No cooling 5: Awaiting defrost stop on last section
1: Cooling 6: Forced closing
4: Defrosting 8: Emergency cooling (sensor failure)
10: Forced cutout (Melt function)
|
NightCond Status of day/night function
3:02:11 Off = “day” and ON = “night”
|
Thermostat Ctrl. Settings for thermostat function
Settings
3:03
Ther. Sx A Defi ne thermostat sensor
1 - 3 1: S3 used
3:03:01 2: S4 used
| 3: S3, S4 used. CPT(calculated product temperature)
|
CutOut °C A Setting of thermostat cutout value section A
-50 - 50
3:03:02
|
Diff . K A Setting of thermostat diff erential section A
0.1 - 10
3:03:03
|
S4 Day % A S4 weighting by day
0 - 100 S3 is automatically weighted. Must only be set if “Ther.Sx” = 3
3:03:04
|
S4 Night % A S4 is weighting at night
0 - 100 S3 is automatically weighted
3:03:05
|
Dt Night A Night set back value section A
-25 - 25
3:03:06
|
Air Temp. Alarm Settings for alarm function
Settings Alarm defi nitions for: S3A, S4A and S5A.
3:04
High S3A High air temperature alarm limit, section A (absolute value)
-50 - 50
3:04:01
|
Low S3A Low air temperature alarm limit, section A ( absolute value )
-50 - 50
3:04:02
|
High S4A High air temperature alarm limit, section A (absolute value)
-50 - 50
3:04:03
|
Low S4A Low air temperature alarm limit, section A (absolute value )
-50 - 50
3:04:04
|
High S5A High air temperature alarm limit, section A (absolute value)
-50 - 50
3:04:05
|
Low S5A Low air temperature alarm limit, section A (absolute value )
-50 - 50
3:04:06
|
HighDel1 A Time delay for alarm after start-up, forced closing, defrost, or when
0 - 240 function switch is in position 0/-1.
3:04:07 (Time is common to all three sensors)
|
HighDel2 A Time delay for alarm during normal regulation
0 - 60 (Time is common to all three sensors)
3:04:08
10 Menu operation RC.1M.A5.02 © Danfoss 05/2004 AKC 121A Version 2.3x
|
Low Del. A Time delay for alarm when too low temperature is registered
0 - 60 (Time is common to all three sensors)
3:04:10
|
Temp. Mon. A Monitoring of temperature alarms
0 - 2 0: No alarm
3:04:10 1: Alarm permitted
2: Alarm permitted, but not if regulation is stopped
|
Controller B The settings for section A also apply to section B. Please refer
4 to the above information.
|
|
Common
Settings Functions common to sections A and B
5
Day/Night Ctrl. Settings of day/night function
Settings
5:01
Day/Night Choose day-/night operation function
0 3 Help 0: No night setback
5:01:01 1: Change between day and night operation according to
| signal on DI input
2: Change between day and night operation according to
internal time clock
3: Change between day and night operation according to the
signal from the master controller (Signal via DANBUSS)
Mo Day h Time table for day operation on mondays
0 - 24 End of night setback
5:01:02 At setting = 0 there is no night setback this day
|
Mo Night h Time table continued:
0 - 24 Start (of night setback)
5:01:03 At setting = 0 there is no night setback this day
Tu If day and night settings are identical, and if night is set before
We the function will be changed. See function description.
Th
Fr Settings can also be made for the remaining days of the week in
Sa comformity with the two settings shown above
Su
|
Railheat Pulsing Settings for railheat function
(Day/Night)
5:02
RailOnDay% During day operation: Setting of rail heat ON period in percent
0 - 100 of the “RailCycl m” time
5:02:01
|
RailOnNgt% During night operation: Setting of rail heat ON period in percent
0 - 100 of the “RailCycl m” time
5:02:02
|
RailCycl m Period time for total ON / OFF time
6 - 60
5:02:03
Defrost Control Defrost function
6
Alarm messsage In case of alarm, an E is shown on the display
6:01 (error log becomes visible)
See page 18, check of error log
6:01:01
|
Defrost Read-out of mesuring values related to defrost function
Measurements
6:02
S5 °C A Defrost sensor temperature in section A
6:02:01
AKC 121A Version 2.3x Menu operation RC.1M.A5.02 © Danfoss 05/2004 11
|
DefTime A Actual defrost cutin time or duration of the latest fi nished
6:02:02 defrosting period in section A
|
S5 °C B Defrost sensor temperature in section B
6:02:03
|
DefTime B Actual defrost cutin time or duration of the latest fi nished
6:02:04 defrosting period in section B
|
Defrost Start Settings of defrost start
Method
6:03
Man. Def Manual defrost is activated when ON
ON/OFF (changes automatically to OFF)
6:03:01
|
Def Sched Defrost will be started in accordance with the settings in defrost
ON/OFF tables 1, 2 and 3 (6:06, 6:07 and 6:08)
6:03:02
|
PumpDown A Delay time prior to start of gas defrost. Section A
0-60 The evaporator is drained of refrigerant through the
6:03:03 mian valve in the suction line. Set in minutes.
|
PumpDown B Delay time prior to start of gas defrost. Section B
0-60 The evaporator is drained of refrigerant through the
6:03:04 mian valve in the suction line. Set in minutes.
|
Defrost Stop Defi nition of how defrost stop is made, and how start-up after
Temp(1)/Time(2) defrost take place
6:04
Temp/TimeA 1: Temperature stop (time as security)
1 - 2 2: Stop on time
6:04:01 (section A)
|
MaxDefTimA Max. permissible defrost time in minutes. Section A.
5 - 180 (Security time on temperature stop)
6:04:02
|
DefStop °C A Temperature value of defrost stop. Section A
0 - 60
6:04:03
|
DrainDown A Delay time when defrost completed. Section A.
0 - 60 The evaporator is drained of condensed refrigerant through
6:04:04 the drain valve. Set in minutes.
|
Temp/TimeB 1: Temperature stop (time as security)
1 - 2 2: Stop on time
6:04:05 (section B)
|
MaxDefTimB Max. permissible defrost time in minutes. Section B.
5 - 180 (Security time on temperature stop)
6:04:06
|
DefStop°C B Temperature value of defrost stop. Section B
0 - 60
6:04:07
|
DrainDown B Delay time when defrost completed. Section B.
0-60 The evaporator is drained of condensed refrigerant through
6:04:08 the drain valve. Set in minutes.
|
Fan Del. m Time delay before fans are started (the time starts when the
0 - 60 defrost period for both sections has been completed)
6:04:09
|
CentralDef ON: Valve A and B are open during the defrost period.
ON-OFF OFF: Valve A and B are closed during the defrost period.
6:04:10 (Defrost sequence: Pumpdown, defrost, draindown)
|
ComDefStop Defi nition of how refrigeration is restarted
ON - OFF ON: Refrigeration must not be started until both sections have
6:04:11 completed their defrost
OFF: Refrigeration can be started individually in both sections
12 Menu operation RC.1M.A5.02 © Danfoss 05/2004 AKC 121A Version 2.3x
|
Def. Schedule Defi nition of defrost programme to be used on the diff erent days
Day selection of the week
6:05
Mon Sched Choose defrost program for monday: 1, 2 or 3
1 - 3
6:05:01
Tue Settings must also be made for the remaining days of the week in
Wed conformity with the above setting
Thu
Fri
Sat
Sun
|
Schedule 1 Settings for defrost programme 1
Def. Start Times
6:06
No. Per Day Number of defrosts / 24 hours
0 - 8
6:06:01
|
Def1 Sc1 Setting of time the 1st defrost begins
00:00
6:06:02
Def1 Sc1 Hour Setting of hours
0 - 23
6:06:02:01
|
Def1 Sc1 Min Setting of minutes
0 - 59
6:06:02:02
|
Def2 Sc1 If several defrost periods have been selected, they must also have
Def3 Sc1 settings in comformity with the three above mentioned ones
Def4 Sc1
Def5 Sc1
Def6 Sc1
Def7 Sc1
Def8 Sc1
|
Schedule 2 Also make settings for defrost programmes 2 and 3, if they are to be
Schedule 3 used
|
Confi guration Confi guration
Settings
7
Control Confi guration of sections A and B
Section A/B
7:01
Ctrl. A Section A
ON/OFF ON: Regulation
7:01:01 OFF: No regulation
|
Ctrl. B Section B
ON/OFF ON: Regulation
7:01:02 OFF: No regulation
|
Thermostat Defi ne thermostat function’s regulating mode
ON/
OFF(1)PWM(2)
7:02
TherMode A Section A
1 - 2 1: ON/OFF thermostat
7:02:01 2: Modulating thermostat
|
TherMode B Section B
1 - 2 1: ON/OFF thermostat
7:02:02 2: Modulating thermostat
AKC 121A Version 2.3x Menu operation RC.1M.A5.02 © Danfoss 05/2004 13
|
AKA 14 A Read-out on AKA 14 (section A)
1 - 5 1: S3A
7:02:03 2: S4A
3: S5A
4: Air Temp A
5: Weighted A
|
AKA 14 B Read-out on AKA 14 (section B)
1 - 5 1: S3B
7:02:04 2: S4B
3: S5B
4: Air Temp B
5: Weighted B
|
Off set K. A
Displacement of the display view (Section A)
-10 - 10
7:02:05
|
Off set K. B
Displacement of the display view(Section B)
-10 - 10
7:02:06
|
Sensor Sensor calibration
Calibration
7:03
Corr S3A Correction of signal from “S3A” sensor
-10 - 10
7:03:01
|
Corr. S4A Correction of signal from “S4A” sensor
-10 - 10
7:03:02
|
Corr. S5A Correction of signal from “S5A” sensor
-10 - 10
7:03:03
|
Corr. S3B Correction of signal from “S3B” sensor
-10 - 10
7:03:04
|
Corr. S4B Correction of signal from “S4B” sensor
-10 - 10
7:03:05
|
Corr. S5B Corretion of signal from “S5B” sensor
-10 - 10
7:03:06
|
DI1 Confi g Confi guration of “DI1” input
Def(1) Night(2)
7:04
DI1 Confi g 1: A pulse signal at the input will start a defrost cycle
1 - 2 2: An on/off switch at the input will change between day and night
7:04:01 operation
|
DO1 Confi g Confi guration of “DO1” output
Rail Night Fan
7:05
DO1 Confi g 1: The output is used for impulse control of the rail heat
1 - 4 2: The output must follow the times indicated in the day/night table
7:05:01 3: The output is used for controlling the fans
* The Fans are stopped during defrost
4: The output is used for controlling the fans. The fans are in operation
during defrost.
14 Menu operation RC.1M.A5.02 © Danfoss 05/2004 AKC 121A Version 2.3x
|
Service Mode Service function
8
Measurements
of Measurements on inlets
input Terminals
8:01
S3 °C A Temperature at S3 sensor section A
8:01:01
|
Corr. S3A Set correction value for the “S3A” sensor
8:01:02
|
S4 °C A Temperature at S4 sensor section A
8:01:03
|
Corr. S4A Set correction value for “S4A” sensor
8:01:04
|
S5 °C A Temperature at “S5” sensor section A
8:01:05
|
Corr. S5A Set correction value for “S5A” sensor
8:01:06
|
ON input A Status of ON input section A (terminals 94-95)
8:01:07
|
S3 °C B Temperature at “S3” sensor section B
8:01:08
|
Corr. S3B Set correction value for “S3B” sensor
8:01:09
|
S4 °C B Temperature at “S4” sensor section B
8:0110
|
Corr. S4B Set correction value for “S4B” sensor
8:01:11
|
S5 °C B Temperature at “S5” sensor section B
8:01:12
|
Corr. S5B Set correction value for “S5B” sensor
8:01:13
|
ON input B Status of ON input section B (terminals 104-105)
8:01:14
|
DI1 input Status of DI input (terminals 106-107)
8:01:15
|
State of Outputs Status of Outputs
8:02
Valve st. A Status of valve output section A (terminals 10-11)
8:02:01
|
Defr.st. A Status of defrost output section A (terminals 12-13)
8:02:02
|
Valve st. B Status of valve output section B (terminals 14-15)
8:02:03
|
Defr.st. B Status of defrost output section B (terminals 16-17)
8:02:04
|
DO1 st. Status of DO1 output (terminals 18-19)
8:02:05
|
Al.Rel.st. Status of alarm output (terminals 20-21)
8:02:06
AKC 121A Version 2.3x Menu operation RC.1M.A5.02 © Danfoss 05/2004 15
|
Manual control Forced operation of outlets during service
of Outputs “Main Switch” must be set to : “-1” (see 2:02:01)
8:03
Man. Ctrl. ON: Manual control is permitted when “Main Switch” = -1
ON/OFF NOTE: No monotoring
8:03:01 When manual setting is fi nished, setting must be changed
| to OFF
Valve A
ON/OFF Forced operation of valve outlet section A
8:03:02
|
Defrost A Forced operation of defrost outlet section A
ON/OFF
8:03:03
|
Valve B Forced operation of valve outlet section B
ON/OFF
8:03:04
|
Defrost B Forced operation of defrost outlet section B
ON/OFF
8:03:05
|
DO1 output Forced operation of DO1 outlet
ON/OFF
8:03:06
|
AlarmRelay Forced operation of alarm outlet (terninal 20-21)
ON/OFF ON: Relay switch closed (no alarm)
8:03:07 OFF: Relay switch interrupted (alarm)
16 Menu operation RC.1M.A5.02 © Danfoss 05/2004 AKC 121A Version 2.3x
|
Alarm Alarm priorities
destinations Set priority for the following alarm texts
9 Choose between 1,2,3 or 0. They have the following meaning:
1: Alarm at AKC121A relay output + DO 2 on master gateway
+ message on DANBUSS
2: DANBUSS message only
3: Alarm at AKC121A relay output + DANBUSS message
0: No activity
Sensor Alarms when there are sensor faults
Alarms
9:01
S3 Error A S3A
0 - 3
9:01:01
|
S4 Error A S4A
0 - 3
9:01:02
|
S5 Error A S5A
0 - 3
9:01:03
|
S3 Error B S3B
0 - 3
9:01:04
|
S4 Error B S4B
0 - 3
9:01:05
|
S5 Error B S5B
0 - 3
9:01:06
|
Other Other alarms
Alarms The alarm will sound if:
9:02
Network ON: When alarms are registrered via PC or Gateway printer
ON/OFF OFF: When alarms are registrered via AKA 21, only
9:02:01
|
StandbyMod The regulation is stopped.
0 - 2
9:02:02
|
ChClockSet The controller has been without supply voltage
0 - 3
9:02:03
|
High S3A The S3A temperature exceeds the max. limit
0 - 3
9:02:04
|
Low S3A The S3A temperature goes below the min. value
0 - 3
9:02:05
|
High S4A The S4A temperature exceeds the max. limit
0 - 3
9:02:06
|
Low S4A The S4A temperature goes below the min. value
0 - 3
9:02:07
|
High S5A The S5A temperature exceeds the max. limit
0 - 3
9:02:08
AKC 121A Version 2.3x Menu operation RC.1M.A5.02 © Danfoss 05/2004 17
|
Low S5A The S5A temperature goes below the min. value
0 - 3
9:02:09
|
High S3B The S3B temperature exceeds the max. limit
0 - 3
9:02:10
|
Low S3B The S3B temperature goes below the min. value
0 - 3
9:02:11
|
High S4B The S4B temperature exceeds the max. limit
0 - 3
9:02:12
|
Low S4B The S4B temperature goes below the min. value
0 - 3
9:02:13
|
High S5B The S5B temperature exceeds the max. limit
0 - 3
9:02:14
|
Low S5B The S5B temperature goes below the min. value
0 - 3
9:02:15
|
DefTimExce Defrost is stopped on max. time (defrost stop temperature not
0 - 3 reached within the set safety time)
9:02:16
|
DI1Def.On There is still signal on the DEFR input 30 minutes after the
0 - 3 termination of a defrost
9:02:17
|
Ctrl. Off A Set section A Off
0 - 3
9:02:18
|
Ctrl. Off B Set section B Off
0 - 3
9:02:19
18 Menu operation RC.1M.A5.02 © Danfoss 05/2004 AKC 121A Version 2.3x
Alarm message
The following display read-outs are only visible if there is an active error.
A or B in brackets show in which section an active error is recorded.
When the error is corrected, the error message can be removed by pressing ENTER.
(If the code function has been selected, a code must also be entered).
Alarm message Cause Remedy
Standby mode Regulation has stopped The function switch (Main Switch) is either in position
“Controller stopped” or “Service” (See 2:02:01)
Check clock Power failure After power failure, timer must be set.
settings NB! If Network = ON, resetting will take place automatically from
the gateway
Max. Def. Time
Max. defrosting period exceeded
(section A or B)
Defrosting fi nished according to time not as selected
( ) exceeded according to temperature
SXXX Sensor error Check sensor connection / sensor resistance
Sensor Error
High Sx ()
Too high air temperature
S3, S4, S5
Low Sx ( )
Too low air temperature
S3, S4, S5
Wrong Signal on
Wrong defrost demand Active defrost signal on terminal 106-107 contrary to just fi nished
Def Start inp defrosting
AKC 121A Version 2.3x Menu operation RC.1M.A5.02 © Danfoss 05/2004 19
Communications / messages from AKA 21
Message not
sent
There is no contact between
control panel and a controller Check the data communication system
Regulator
message
- ll -
Check the data communication system
not received
No node - ll - Check the data communication system
(There is no gateway on the data communication system)
Initialisation
error
- ll -
Check the data communication system
(There is a gateway on the data communication system)
The message may be removed, if you disconnect AKA 21 briefl y
Message not
Temporary communication
problem or wrong setup
Wait, or if it is a newly started system, check the setup of the data
understood communication system
Dansett
supervising
Pause function
When you push a key, the display disappears.
Supervising Lack of contact to a controller Check the data communication system
no answer
AKC AKA 21 had been disconnected Wait. The message disappears on its own after three minutes.
Occupied for a brief period
20 Menu operation RC.1M.A5.02 © Danfoss 05/2004 AKC 121A Version 2.3x
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products
already on order provided that such alternations can be made without subsequential changes being necessary in specifi cations already agreed.
All trademarks in this material are property of the respecitve companies. Danfoss and Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
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Danfoss Controller type AKC 121A. Vers. 2.3x. AKA 21 Installation guide
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- Thermostats
- Type
- Installation guide
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