Danfoss Controller AKC 121B, version 1.5x. AKA 21 Installation guide
- Category
- Thermostats
- Type
- Installation guide
RC.1M.J1.02 → RC.1M.J2.02 01-1999
Software version 1.5x
Controller
AKC 121B
ADAP-KOOL
®
Menu operation via AKA 21
2 Menu operation RC.1M.J2.02 © Danfoss 01/1999 AKC 121B Version 1.5x
System survey
A refrigerating plant fitted 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 specific controller is selected, and it will now
be possible to make settings and readouts for this unit.
The individual monitoring units type AKC 121B 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 January 1999), applies to AKC 121B with the code number
084B2904 fitted with software version 1.5x.
AKC 121B Version 1.5x Menu operation RC.1M.J2.02 © Danfoss 01/1999 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 field 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 regulation 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.J2.02 © Danfoss 01/1999 AKC 121B Version 1.5x
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 identified 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 flash.
When an error has occurred, first 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 121B 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 first one shown when you have selected an address from the total
system):
e.g.
AKC 121B 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 controller. 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 121B Version 1.5x Menu operation RC.1M.J2.02 © Danfoss 01/1999 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 A °C Setting of thermostat cutout value section A
-50 - 50
3:03:01
CutOut B °C Setting of thermostat cutout value section B
-50 - 50
4:03:01
SAir A °C Actual air temperature for thermostat in section A
3:02:01
SAir B °C Actual air temperature for thermostat in section B
4:02:01
SDef/Aux A Temperature at SDef/Aux A sensor section A
3:02:02
SDef/AuxB Temperature at SDef/Aux B sensor, section B
4:02:02
Leave the F2 function by pushing "←".
2. F2
6 Menu operation RC.1M.J2.02 © Danfoss 01/1999 AKC 121B Version 1.5x
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
3:02:08 0: No cooling 5: Awaiting defrost stop on last section
1: Cooling 6: Forced closing
4: Defrosting 8: Emergency cooling (sensor failure)
10: Forced closing (melt function)
11: Door open
RegCond B Regulating condition for section B
4:02:08 0: No cooling 5: Awaiting defrost stop on last section
1: Cooling 6: Forced closing
4: Defrosting 8: Emergency cooling (sensor failure)
10: Forced closing (melt function)
11: Door open
NightCond Status of day/night function
3:02:09 Off = "day" and ON = "night"
OD % A Modulating: Refrigeration requirement in section A
3:02:06
OD % B Modulating: Refrigeration requirement in section B
4:02:06
Run Time A ON/OFF: Present refrigeration period (thermostat cutin) or duration
3:02:07 of last completed period, section A.
Run Time B ON/OFF: Present refrigeration period (thermostat cutin) or duration
4:02:07 of last completed period, section B
DefTime A Actual defrost cutin time or duration of the latest finished
6:02:02 defrosting period in section A
DefTime B Actual defrost cutin time or duration of the latest finished
6:02:04 defrosting period in section B
Leave the function by pushing "←".
3. F3
AKC 121B Version 1.5x Menu operation RC.1M.J2.02 © Danfoss 01/1999 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 configurations for section A
4. Measurements and configurations for section B
5. Common settings for section A and B
6. Defrost function
7. Configuration
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 121B 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 121B 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.
8 Menu operation RC.1M.J2.02 © Danfoss 01/1999 AKC 121B Version 1.5x
Gateway Address Reading of the address on the nearst gateway which has to
xxx effect alarms (see 1:05)
1:06 The address can only be set via PC
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 offers 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 16, 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 configurations 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 16, check of error log
3:01:01
Thermostat Readout of measuring values related to section A
Measurements
3:02
SAir A °C Actual air temperature for thermostat in section A
3:02:01
SDef/Aux A Temperature at SDef/Aux A sensor section A
3:02:02
Door A Statement of door switch input "A"
3:02:03
Cut In A°C Actual thermostat cutin value section A
3:02:04
CutOut A°C Actual thermostat cutout value section A
3:02:05
OD % A This and the next readout depend on the thermostat selected under
3:02:06 "7:2". There will only be a readout on one of the display units:
Modulating: Refrigeration requirement in section A
Run Time A ON/OFF: Present refri
g
eration period (thermostat cutin) or duration
3:02:07 of last completed period, section A.
Re
g
Cond A Re
g
ulatin
g
condition for section A
3:02:08 0: No cooling 5: Awaiting defrost stop on last section
1: Coolin
g
6: Forced closin
g
4: Defrosting 8: Emergency cooling (sensor failure)
10: Forced closing (melt function)
11: Door open
AKC 121B Version 1.5x Menu operation RC.1M.J2.02 © Danfoss 01/1999 9
NightCond Status of day/night function
3:02:09 Off = "da
y
" and ON = "ni
g
ht"
Thermostat Ctrl. Settin
g
s for thermostat function
Settin
g
s
3:03
CutOut A °C Settin
g
of thermostat cutout value section A
-50 - 50
3:03:01
Diff A K Setting of thermostat differential section A
0.1 - 10
3:03:02
FanCutout A Choose fan operation durin
g
thermostats cutout ON/OFF
OFF ON
3:03:03
Dt Ni
g
ht A Ni
g
ht set back value section A
-25 - 25
3:03:04
Air Temp. Alarm Settings for alarm function
Settin
g
s
3:04
HighSAir A High air temperature alarm limit, section A (absolute value)
-50 - 50
3:04:01
Low SAir A Low air temperature alarm limit, section A ( absolute value )
-50 - 50
3:04:02
Hi
g
hSAuxA Hi
g
h air temperature alarm limit, section A (absolute value)
-50 - 50
3:04:03
Low SAuxA Low air temperature alarm limit, section A (absolute value )
-50 - 50
3:04:04
Hi
g
hDel1 A Time dela
y
for alarm after start-up, forced closin
g
, defrost, or when
0 - 240 function switch is in position 0/-1.
3:04:05 (Time is common to both sensors)
HighDel2 A Time delay for alarm during normal regulation
0 - 60 (Time is common to both sensors)
3:04:06
Low Del A Time dela
y
for alarm when too low temperature is re
g
istered
0 - 60 (Time is common to both sensors)
3:04:07
Temp. Mon. A Monitorin
g
of temperature alarms
0 - 2 0: No alarms
3:04:08 1: Alarm permitted
2: Alarm permitted, but not if re
g
ulation is stopped
Controller B The settin
g
s for section A also appl
y
to section B. Please refer
4 to the above information.
Common Settin
g
s Functions common to sections A and B
5
Day/Night Ctrl. Settings of day/night function
Settings
5:01
Da
y
/Ni
g
ht Choose da
y
-/ni
g
ht operation function
0 3 Help 0: No night setback
5:01:01 1: Chan
g
e between da
y
and ni
g
ht operation accordin
g
to
signal on DI input
2: Chan
g
e between da
y
and ni
g
ht operation accordin
g
to
internal time clock
3: Change between day and night operation according to the
si
g
nal from the master controller (Si
g
nal via DANBUSS)
10 Menu operation RC.1M.J2.02 © Danfoss 01/1999 AKC 121B Version 1.5x
Mo Day h Time table for day operation on mondays
0 - 24 End of ni
g
ht setback
5:01:02 At settin
g
= 0 there is no ni
g
ht setback this day
Mo Ni
g
ht h Time table continued:
0 - 24 Start (of ni
g
ht setback)
5:01:03 At settin
g
= 0 there is no ni
g
ht setback this day
Tu If day and night settings are identical, and if night is set before
We the function will be changed.
Th
Fr Settings can also be made for the remaining days of the week in
Sa comformity with the two settings shown above
Su
Defrost Control Defrost function
6
Alarm messsa
g
e In case of alarm, an E is shown on the display
6:01 (error lo
g
becomes visible)
See pa
g
e 16, check of error lo
g
6:01:01
Defrost Read-out of mesurin
g
values related to defrost function
Measurements
6:02
SDef/AuxA Defrost sensor temperature in section A
6:02:01
DefTime A Actual defrost cutin time or duration of the latest finished
6:02:02 defrostin
g
period in section A
SDef/AuxB Defrost sensor temperature in section B
6:02:03
DefTime B Actual defrost cutin time or duration of the latest finished
6:02:04 defrostin
g
period in section B
Defrost Start Settin
g
s of defrost start
Method
6:03
Man. Def Manual defrost is activated when ON
ON/OFF (chan
g
es automatically to OFF)
6:03:01
PumpDown A Delay time prior to start of
g
as defrost. Section A
0-60 The evaporator is drained of refri
g
erant throu
g
h the
6:03:02 mian valve in the suction line. Set in minutes.
PumpDown B Delay time prior to start of
g
as defrost. Section B
0-60 The evaporator is drained of refri
g
erant throu
g
h the
6:03:03 main valve in the suction line. Set in minutes.
Defrost Stop Definition of how defrost stop is made, and how start-up after
Temp(1)/Time(2) defrost take place
6:04
Fan run A Choose fan operation durin
g
defrost
OFF ON Section A
6:04:01
Temp/TimeA 1: Temperature stop (time as security)
1 - 2 2: Stop on time
6:04:02 (section A)
MaxDefTimA Max. permissible defrost time in minutes. Section A.
5 - 180 (Security time on temperature stop)
6:04:03
Def. Sx A Definition of sensor for defrost stop
1 - 2 1: SAir A 2: SDef/AuxA
6:04:04
DefStopA°C Temperature value of defrost stop. Section A
0 - 60
6:04:05
AKC 121B Version 1.5x Menu operation RC.1M.J2.02 © Danfoss 01/1999 11
DrainDown A Delay time when defrost completed. Section A.
0 - 60 The evaporator is drained of condensed refri
g
erant throu
g
h
6:04:06 the drain valve. Set in minutes.
FanDelay A Time delay before fans are started (the time starts when the
0 - 60 defrost period has been completed)
6:04:07
Fan run B Choose fan operation durin
g
defrost
OFF ON Section B
6:04:08
Temp/TimeB 1: Temperature stop (time as security)
1 - 2 2: Stop on time
6:04:09 (section B)
MaxDefTimB Max. permissible defrost time in minutes. Section B.
5 - 180 (Security time on temperature stop)
6:04:10
Def. Sx B Definition of sensor for defrost stop
1 - 2 1: SAir B 2: SDef/AuxB
6:04:11
DefStopB°C Temperature value of defrost stop. Section B
0 - 60
6:04:12
DrainDown B Delay time when defrost completed. Section B.
0-60 The evaporator is drained of condensed refrigerant through
6:04:13 the drain valve. Set in minutes.
FanDelay B Time delay before fans are started (the time starts when the
0 - 60 defrost period has been completed)
6:04:14
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.
6:04:15 (Defrost sequence: Pumpdown, defrost, draindown)
ComDefStop Definition of how refri
g
eration is restarted
ON - OFF ON: Refri
g
eration must not be started until both sections have
6:04:16 completed their defrost
OFF: Refri
g
eration can be started individually in both sections
Def. Schedule Definition of defrost pro
g
ramme to be used on the different days
Day selection of the week
6:05
Mon Sched Choose defrost pro
g
ram 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 Settin
g
s for defrost pro
g
ramme 1
Def. Start times
6:06
No. Per Day Number of defrosts / 24 hours
0 - 8
6:06:01
Def1 Sc1 Settin
g
of time the 1st defrost be
g
ins
00:00
6:06:02
Def1 Sc1 Hour Settin
g
of hours
0 - 23
6:06:02:01
Def1 Sc1 Min Settin
g
of minutes
0 - 59
6:06:02:02
12 Menu operation RC.1M.J2.02 © Danfoss 01/1999 AKC 121B Version 1.5x
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
g
uration Confi
g
uration
Settin
g
s
7
Control Confi
g
uration of sections A and B
Section A/B
7:01
Ctrl. A Section A
ON/OFF ON: Re
g
ulation
7:01:01 OFF: No re
g
ulation
Ctrl. B Section B
ON/OFF ON: Re
g
ulation
7:01:02 OFF: No re
g
ulation
Thermostat Define thermostat function’s re
g
ulatin
g
mode
ON/OFF(1)PWM(2)
7:02
TherMode A Section A
1 - 2 1: ON/OFF thermostat
7:02:01 2: Modulatin
g
thermostat
TherMode B Section B
1 - 2 1: ON/OFF thermostat
7:02:02 2: Modulatin
g
thermostat
AKA 14 A Read-out on AKA 14 (section A)
1 - 2 1: SAir A °C
7:02:03 2: SDef/Aux A °C
AKA 14 B Read-out on AKA 14 (section B)
1 - 2 1: SAir B °C
7:02:04 2: SDef/Aux B °C
Sensor Sensor calibration
Calibration
7:03
Corr Air A Correction of si
g
nal from "SAir A" sensor
-10 - 10
7:03:01
Corr AuxA Correction of si
g
nal from "AuxA" sensor
-10 - 10
7:03:02
Corr Air B Correction of si
g
nal from "SAir B" sensor
-10 - 10
7:03:03
Corr AuxB Correction of si
g
nal from "AuxB" sensor
-10 - 10
7:03:04
DI1 Confi
g
Confi
g
uration of "DI1" input
Def.(1) Ni
g
ht(2)
7:04
DI1 Confi
g
1: A pulse si
g
nal at the input will start a defrost cycle
1 - 2 2: An on/off switch at the input will chan
g
e between day and ni
g
ht
7:04:01 operation
AKC 121B Version 1.5x Menu operation RC.1M.J2.02 © Danfoss 01/1999 13
Door function Door switch function
7:05
DoorDelay A Time delay for door alarm section A
0 - 120
7:05:01
FanOpDoor A Definition of fan ON or OFF when door open
ON/OFF Section A
7:05:02
DoorDelay B Time delay for door alarm section B
0 - 120
7:05:03
FanOpDoor B Definition of fan ON or OFF when door open
ON/OFF Section B
7:05:04
DO1 Confi
g
Confi
g
uration of "DO1" output
Def.(1) Night(2)
7:06
DO1 Confi
g
1: The output is used for defrost (A & B)
1 - 2 2: The output must follow the times indicated in the day/ni
g
ht table
7:06:01
Service Mode Service function
8
Measurements of Measurements on inlets
input terminals
8:01
SAir A °C Actual temperature for the thermostat in section A
8:01:01 (includes correction value, if applicable)
SDef/AuxA Temperature at "SDef/AuxA" sensor section A
8:01:02
Door A Status of door input section A (terminals 92-93)
8:01:03
ON input A Status of ON input section A (terminals 94-95)
8:01:04
SAir B °C Actual air temperature for thermostat in section B
8:01:05
SDef/AuxB Temperature at "SDef/AuxB" sensor section B
8:01:06
Door B Status of door input section B (terminals 102-103)
8:01:07
ON input B Status of ON input section B (terminals 104-105)
8:01:08
DI1 input Status of DI input (terminals 106-107)
8:01:09
State of Outputs Status of Outputs
8:02
Valve st. A Status of valve output section A (terminals 10-11)
8:02:01
Fan st. A Status of fan output section A (terminals 12-13)
8:02:02
Valve st. B Status of valve output section B (terminals 14-15)
8:02:03
14 Menu operation RC.1M.J2.02 © Danfoss 01/1999 AKC 121B Version 1.5x
Fan st. B Status of fan 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
Manual control Forced operation of outlets durin
g
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 monotorin
g
8:03:01 When manual settin
g
is finished, settin
g
must be chan
g
ed
to OFF
Valve A
ON/OFF Forced operation of valve outlet section A
8:03:02
Fan A Forced operation of fan outlet section A
ON/OFF
8:03:03
Valve B Forced operation of valve outlet section B
ON/OFF
8:03:04
Fan B Forced operation of fan 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)
Alarm Alarm priorities
Destinations Set priority for the followin
g
alarm texts
9 Choose between 1,2,3 or 0. They have the followin
g
meanin
g
:
1: Alarm at AKC121B relay output + DO 2 on master
g
ateway
+ messa
g
e on DANBUSS
2: DANBUSS messa
g
e only
3: Alarm at AKC121B relay output + DANBUSS messa
g
e
0: No activity
Sensor Alarms when there are sensor faults
Alarms
9:01
SAir A Err SAir A
0 - 3
9:01:01
SAuxA Err SAuxA
0 - 3
9:01:02
SAir B Err SAir B
0 - 3
9:01:03
SAuxB Err SAuxB
0 - 3
9:01:04
AKC 121B Version 1.5x Menu operation RC.1M.J2.02 © Danfoss 01/1999 15
Other Other alarms
Alarms The alarm will sound if:
9:02
Network ON: When alarms are re
g
istrered via PC or Gateway printer
ON/OFF OFF: When alarms are re
g
istrered via AKA 21, only
9:02:01
StandbyMod The re
g
ulation is stopped.
0 - 2
9:02:02
ChClockSet The controller has been without supply volta
g
e
0 - 3
9:02:03
Hi
g
hSAir A The SAir A temperature exceeds the max. limit
0 - 3
9:02:04
Low SAir A The SAir A temperature
g
oes below the min. value
0 - 3
9:02:05
Hi
g
hSAuxA The SAuxA temperature exceeds the max. limit
0 - 3
9:02:06
Low SAuxA The SAuxA temperature
g
oes below the min. value
0 - 3
9:02:07
Hi
g
hSAir B The SAir B temperature exceeds the max. limit
0 - 3
9:02:08
Low SAir B The SAir B temperature
g
oes below the min. value
0 - 3
9:02:09
Hi
g
hSAuxB The SAuxB temperature exceeds the max. limit
0 - 3
9:02:10
Low SAuxB The SAuxB temperature
g
oes below the min. value
0 - 3
9:02:11
DefTimExce Defrost is stopped on max. time (defrost stop temperature not
0 - 3 reached within the set safety time)
9:02:12
DI1Def.On There is still si
g
nal on the DEFR input 30 minutes after the
0 - 3 termination of a defrost
9:02:13
Door A Door has been open lon
g
er than permitted. Section A.
0 - 3
9:02:14
Door B Door has been open lon
g
er than permitted. Section B.
0 - 3
9:02:15
16 Menu operation RC.1M.J2.02 © Danfoss 01/1999 AKC 121B Version 1.5x
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 specifications 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.
AC-RDT
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 Re
g
ulation 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.
settin
g
NB! If Network = ON, resettin
g
will take place automatically from
the
g
ateway
Max. Def. Time Max. defrostin
g
period exceeded Defrostin
g
finished accordin
g
to time not as selected
( ) exceeded (section A or B) accordin
g
to temperature
SXXX Sensor error Check sensor connection / sensor resistance
Sensor Error
High SAir XXX( ) Too high air temperature
SAir A, SAux A
SAir B, SAux B
Low SAir XXX( ) Too low air temperature
SAir A, SAux A
SAir B, SAux B
Wrong Signal on Wrong defrost demand Active defrost signal on terminal 106-107 contrary to just finished
Def Start inp defrosting
Door ( ) Alarm Door open Close the door
Communications / messages from AKA 21
Message not sent There is no contact between Check the data communication system
control panel and a controller
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 briefly
Message not Temporary communication Wait, or if it is a newly started system, check the setup of the data
understood problem or wrong setup 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
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8
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-
10
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16
Danfoss Controller AKC 121B, version 1.5x. AKA 21 Installation guide
- Category
- Thermostats
- Type
- Installation guide
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