Danfoss Controller type AKC24W2 for controlling of water chillers. Vers. 1.0x. AKA 21 Installation guide

Brand: Danfoss

Model: Controller type AKC24W2 for controlling of water chillers. Vers. 1.0x. AKA 21

Type: Installation guide

RC.1J.70.02 05-1994

Software version 1.0x

Controller for controlling of water chillers

AKC 24W2

ADAP-KOOL

Menu operation via AKA 21

2 Menu operation RC.1J.70.02 © Danfoss 5/94 AKC 24W2 Version 1.0X

System survey

A refrigerating plant fitted with ADAP-KOOL

refrigeration controls will mostly consist

of several controllers 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 controllers 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. Use

another document with literature number

RC.1J.80.02.

Operation

Validity

This menu operation was worked out in Mai 1994 and applies to AKC 24W2 with

the following code number: 084B2027 that are fitted with software version 1.0x.

AKC 24W2 Version 1.0X Menu operation RC.1J.70.02 © Danfoss 5/94 3

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 furthermore flash.

When an error has occurred, first select the controller on which the error is registered.

Continue through the several menus and follow the menus to the right when these

indicates an "E". Thereafter read the alarm text in the menu "Alarm message".

At the end of the document there is a list of all the error messages and a description

of how to acknowledge an alarm.

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 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

1 < 4 > 16

AEAAAAAAAAEEgg A

17 < 17 > 32

AAA

Settings of a controller

-50 til +50 5

OFF / ON ON

1 < 2 > 16

AEAAAAAAAAAAgg A

DANFOSS AKC 24W2

E Mon-11:27

Standby mode

How to localise an error

1 < 1 > 16

AEAAAAAAAAEEgg A

4 Menu operation RC.1J.70.02 © Danfoss 5/94 AKC 24W2 Version 1.0X

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.

DANFOSS AKC 24W2

E Mon-11:27

Functions of a

controller

Move to and from the individual functions by pushing the four arrow keys.

On page 3 you can see how a setting is changed.

List of functions on level 1:

1. Controller’s access display and access to system information

2. Interruption of regulation and refrigerant

3. Capacity control

4. Injection control function for regulation A

5. Injection control function for regulation B

6. Forced control function for service and initial setting

Below and on the following pages the individual functions are shown together with a

brief description:

Level 1 Level 2 Level 3 Description

DANFOSS AKC 24 W Shows controller type, weekday and time

An E on the display means an error has been recorded.(See page 11)

Clock: Day Setting of week day (1 = Monday, 7 = Sunday)

(Mon)1 (Sun)7

1:01

Clock: Hour Setting of hours

0 23

1:02

Clock: Min. Setting of minutes

0 59

1:03

Code No. Reading of the actual controller code no. and programme version

Prog.Ver.

1:04

System address Reading of the actual controller system address

Addr. yyy xxx yyy=network no. and xxx=address.

1:05 The system address can only be set via PC

Address Reading of the actual controller’s address

xxx (Setting on the controller’s DIP-switch)

1:06

Alarm report to Reading of the system address (receiver) the alarms are to be sent to.

Addr. yyy xxx The system address can only be set via PC

1:07

Gateway Address Reading of the address on the nearest gateway which has to effect alarms

xxx (see 1:07).

1:08 The address can only be set via PC

AKC 24W2 Version 1.0X Menu operation RC.1J.70.02 © Danfoss 5/94 5

Main Function Main function

Alarm message Error log. The menu is only visible in case of an active error

(At alarm, an E is shown on the display)

2:01

See page 11 for list of alarm messages

2:01:01

Main Switch Access to the main switch.

Ctrl(1)/Serv(-1)

2:02

Main Switch Main switch: 1: Regulation

-1 / 0 / 1 0: Controller stop

2:02:01 -1: Service mode

Cooling (1) Access to selection of regulation

Heating (2)

2:03 >>

Cool/Heat Selection of regulation: 1: Refrigeration

1 2 2: Heat pump

2:03:01

Rfg. type 1..19 Access to selection of refrigerant

2:04 >>

Rfg.Type R Reading of set refrigerant type

2:04:01

Rfg. type Refrigerant selection : 0: No refrigerant selection. 10: R503

0 19 1: R12 11: R114

2:04:02 2: R22 12: R142b

3: R134a 13: User-defined

4: R502 14: R32

5: R717 (ammonia) 15: R227

6: R13 16: R401A

7: R13b1 17: AZ50

8: R23 18: R402A

9: R500 19: R404A

Rfg.Fac.a1 Refrigerant selection No. 13. Special function, please contact DANFOSS.

*****32766

2:04:03

Rfg.Fac.a2 Refrigerant selection No. 13. Special function, please contact DANFOSS.

*****32766

2:04:04

Rfg.Fac.a3 Refrigerant selection No. 13. Special function, please contact DANFOSS.

*****32766

2:04:05

Capacity Ctrl. Capacity control

Alarm messages Error log is only visible in case of an active error.

(At alarm, an E is shown on the display).

3:01

See page 11 for list of alarm messages

3:01:01

Cap.Measurements Reading of measuring values related to capacity control

3:02

Cap. Ctrl. Statement of capacity control (ON/OFF)

3:02:01

Media °C Media temperature

3:02:02

6 Menu operation RC.1J.70.02 © Danfoss 5/94 AKC 24W2 Version 1.0X

Ref °C Media temperature reference

3:02:03 incl. external reference signal (if used)

Limit °C Temperature measured on sensor defined as "Limit" sensor (see 3:04:02)

3:02:04

DI 3 Statement of external ON/OFF switch connected to terminal DI 3

3:02:05

Compr. A % Cut-in capacity in %, compressor A

3:02:06

Compr. B % Cut-in capacity in %, compressor B

3:02:07

DO 9 Status of output DO9 (extra capacity)

3:02:08

Safety A Statement of safety circuit connected to terminals DI 1

3:02:09 (control A)

Safety B Statement of safety circuit connected to terminals DI 2

3:02:10 (control B)

Run A h/10 Operating time for compressor A

3:02:11 Example: If 120 is displayed, the operating time is 1200 hours

Run B h/10 Operating time for compressor B

3:02:12 Example: If 1200 is displayed, the operating time is 12000 hours

Cap. Settings Setting of capacity control

3:03

Cap. Ctrl. Choose capacity control ON/OFF

OFF ON

3:03:01

Media °C Reference value of media temperature

-99.9 99.9

3:03:02

Media Al °C Upper alarm limit for media temperature

-50.0 99.0 Absolute value

3:03:03

Limit °C Lowest permissible media temperature (frost-protection)

-99.9 50.0

3:03:04

NZ K Neutral zone for media temperature

0.1 10.0

3:03:05

+ Zone K Regulating band above neutral zone

0.5 10.0

3:03:06

- Zone K Regulating band below neutral zone

0.5 10.0

3:03:07

Adv. Capacity Setting of special parameters

Settings

3:04 >>

Media Sens Selection of sensor input for measuring media temperature (capacity control)

1 5 1: S3

3:04:01 2: S4

3: P0 A

4: P0 B

5: P AUX

AKC 24W2 Version 1.0X Menu operation RC.1J.70.02 © Danfoss 5/94 7

Limit Sens Selection of sensor input for limit measurement (frost protection)

0 6 0: No sensor

3:04:02 1: S3

2: S4

3: P0 A

4: P0 B

5: P AUX

6: Lowest P0 A or P0 B

+ Zone s Time delay between step cutins in the regulating band above the neutral zone

0 900 Set in seconds

3:04:03

- Zone s Time delay between step cutins in the regulating band below the neutral zone

0 900 Set in seconds

3:04:04

+ + Zone s Time delay between step cutins in the regulating band above the "+ zone band".

0 300 Set in seconds

3:04:05

- - Zone s Time delay between step cutins in the regulating band below the "- zone band"

0 300 Set in seconds

3:04:06

Del A min. Minimum time before compressor A can be restarted

1 60 Set in minutes

3:04:07

Del B min. Minimum time before compressor B can be restarted

1 60 Set in minutes

3:04:08

Max. step A Definition of compressor A steps

1 8

3:04:09

Max. step Definition of total number of steps

1 8 (Sum of steps: compressor A + compressor B)

3:04:10

Ext.Ref. Definition of external reference signal (connect to terminal "REF")

0 2 0: No connection

3:04:11 1: 0 - 10 V signal

2: 2 - 10 V signal

Ext.Max. K Displacement to be produced by max. reference signal (10 V)

-50 50

3:04:12

Max A h/10 Setting of hour counter for next compressor service to be performed

032000 (compressor A)

3:04:13 Example: 8000 hours until next service,

hour counter (3:02:01) to read: 1200 (= 12000 hours)

Set menu to 2000 (= 20000 hours)

Max B h/10 Setting of hour counter for next compressor service to be performed

032000 (compressor B)

3:04:14

Time share Priorities for operation of compressors A and B:

1 3 1: A starts before B

3:04:15 2: B starts before A

3: Equalisation of operating time

Step mode Step cutouts with two compressors

1 2 1: Last in, first out

3:04:16 2: Change of sequence! (e.g. 7-6-4-5-3)

(cf. also "Max step A" 3:04:09)

8 Menu operation RC.1J.70.02 © Danfoss 5/94 AKC 24W2 Version 1.0X

DO9 mode Additional capacity required

1 2 1: Because all steps are cut in

3:04:17 2: The media temperature sensor registers a higher value than the one set in the

next menu

DO9 set °C Temperature value where additional capacity is cut in

-99.9 99.0 (see previous menu, setting 2)

3:04:18

DO9 diff K Temperature differential for previous menu

1.0 5.0

3:04:19

Injection Ctrl. A Expansion valve function A

Alarm message Error log is only visible in case of an active error.

At alarm an E is shown on the display.

4:01

See page 11 for list of alarm messages

4:01:01

Inj. Measurements Reading of measurement values related to expansion valve

4:02 function A.

Inj. Ctrl. A Statement of expansion valve ON/OFF

4:02:01

S2-S1 A K Superheat of evaporator measured with the sensors S1/P0A and S2

4:02:02

SH Ref. A K Actual superheat reference of the control

4:02:03

P0/S1 A °C Evaporating pressure or temperature at evaporator inlet

4:02:04

S2 A °C Refrigerant temperature at evaporator outlet

4:02:05

AKV OD% C Actual valve opening degree

4:02:06

Inj. Settings Setting of expansion valve function A.

4:03

Inj. Ctrl. A Choose expansion valve function ON/OFF

OFF ON

4:03:01

MOP Choose MOP function ON/OFF

OFF ON

4:03:02

MOP °C Value of MOP point

-40.0 40.0

4:03:03

Adv. Inject Setting of special parameters

Settings

4:04 >>

SH Close K Min. value of superheat reference at loads below 10%

-6 10 (The value must be lower than SH min.)

4:04:01

SH min K Min. value of superheat reference

-5 10

4:04:02

SH max. K Max. value of superheat reference

5 20

4:04:03

AKV max % The AKV valves max. permissible opening degree

5.0 100.0

4:04:04

Injection Ctrl. B Expansion valve function B

Description for "injection Ctrl B" is the same as for "Injection Ctrl. A" (4)

Service mode Service function

Measurements Measurements

6:01

P0 A Bar Pressure measured with pressure transmitter connected to P0A inlet

6:01:01

P0 B Bar Pressure measured with pressure transmitter connected to P0B inlet

6:01:02

Paux Bar Pressure measured with pressure transmitter connected to Paux inlet

6:01:03

S2 A °C Refrigerant temperature at evaporator outlet control A

6:01:04

S2 B °C Refrigerant temperature at evaporator outlet control B

6:01:05

S3 °C Media temperature measured with S3 sensor

6:01:06

S4 °C Temperature measured with S4 sensor

6:01:07

Ext ref V Registered temperature value of external reference connected to terminal "REF"

6:01:08

DI 3 Statement of cut-off function connected to terminal "DI 3"

6:01:09

Safety A Statement of safety circuit at terminal DI 1 (control A)

6:01:10

Safety B Statement of safety circuit at terminal DI 2 (control B)

6:01:11

Manual Control Forced servo operation of outlets (service)

6:02

Man. Ctrl. ON: Manual setting allowed (se 2:02:01)

OFF ON PLEASE NOTE: No monitoring

6:02:01 When manual setting has been completed, setting must be changed to OFF

AKV A % Forced operation of the expansion valves opening degree, control A.

0 100 (terminal A71-72)

6:02:02

AKV B % Forced operation of the expansion valves opening degree, control B.

0 100 (terminal B71-72)

6:02:03

Step 8 Forced servo operation of outlet D08

OFF ON ON => 24 V a.c. on C3/C4

6:02:04

More Cap. Forced servo operation of outlet DO9

OFF ON ON => 24 V a.c. on D3/D4

6:02:05

Step 1 Forced servo operation of outlet DO1

OFF ON ON => 24 V a.c. on X1/X2

6:02:06

Step 2 Forced servo operation of outlet DO2

OFF ON ON => 24 V a.c. on X3/X4

6:02:07

Step 3 Forced servo operation of outlet DO3

OFF ON ON => 24 V a.c. on X5/X6

6:02:08

Step 4 Forced servo operation of outlet DO4

OFF ON ON => 24 V a.c. on X7/X8

6:02:09

Step 5 Forced servo operation of outlet DO5

OFF ON ON => 24 V a.c. on Y1/Y2

6:02:10

Step 6 Forced servo operation of outlet DO6

OFF ON ON => 24 V a.c. on Y3/Y4

6:02:11

Step 7 Forced servo operation of outlet DO7

OFF ON ON => 24 V a.c. on Y5/Y6

6:02:12

Alarm Out Forced servo operation of alarm outlet

OFF ON ON => 24 V a.c. on Y7/Y8 (no alarm)

6:02:13

Error Log

The following readouts are only visible if there is an active error

A or B in brackets show in which regulation an active error is recorded.

When the error is corrected, the error message can be removed by pressing ENTER.

S2 Error ( ) S2 sensor error Check sensor connection/sensor resistance

S3 Error S3 sensor error Check sensor connection/sensor resistance

S4 Error S4 sensor error Check sensor connection/sensor resistance

P0 Error ( ) Pressure Check connections

transmitter error

Paux Error Pressure Check connections

transmitter error

Standby Mode Control stopped Function switch (Main switch) is either in pos. "Controller stopped" or

"Service" (cf. 2:02:01)

Time for Compr. ( ) Service information The operating time set for the compressor has been reached.

Inspection Plan service

Rfg. Type change Changed Check chosen refrigerant. Regulation with changed refrigerant not possible

after pow_up refrigerant before the controller has been de-energized

Rfg. Type No selection of Select refrigerant (2:04)

Not selected refrigerant

Too high Media Too high

temperature media tempetature

Cut off below Low temp. Wait for temperature rise

Limit temp. Risk of frost

Safety ( ) Cutout Cut-out in safety Check safety automatic

circuit

Max step A > Programming Correction of data in 3:04:09/3:04:10

Max step error

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.

AC-RDT

Danfoss Controller type AKC24W2 for controlling of water chillers. Vers. 1.0x. AKA 21 Installation guide

Brand: Danfoss

Model: Controller type AKC24W2 for controlling of water chillers. Vers. 1.0x. AKA 21

Type: Installation guide

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Danfoss Controller type AKC24W2 for controlling of water chillers. Vers. 1.0x. AKA 21 Installation guide

Danfoss Controller type AKC24W2 for controlling of water chillers. Vers. 1.0x. AKA 21 Installation guide

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