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

Brand: Danfoss

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

Type: Installation guide

Danfoss Controller type AKC24W2 for controlling of water chillers. Vers. 1.0x. AKM has the following features:

Menu operation via AKM
ADAP-KOOL®
Controlling water chillers

This device allows for a variety of measurements and settings, including:

Measurements:
AKC Error
AKV OD A %
P0/S1 A °C
S2-S1 A K
AKV OD B%
P0/S1 B °C
S2-S1 B K
Rfg.Type R
DI 3
Safety A
Safety B
RunTimeA h
Media °C
Limit °C
Compr.A %
Compr.B %
DO 9
Settings:
MainSwitch
Cool/Heat
Rfg

Danfoss Controller type AKC24W2 for controlling of water chillers. Vers. 1.0x. AKM has the following features:

Menu operation via AKM
ADAP-KOOL®
Controlling water chillers

This device allows for a variety of measurements and settings, including:

Measurements:
AKC Error
AKV OD A %
P0/S1 A °C
S2-S1 A K
AKV OD B%
P0/S1 B °C
S2-S1 B K
Rfg.Type R
DI 3
Safety A
Safety B
RunTimeA h
Media °C
Limit °C
Compr.A %
Compr.B %
DO 9
Settings:
MainSwitch
Cool/Heat
Rfg

RC.1J.80.02 09-1995

Software version 1.0x

Controller controlling water chillers

AKC 24W2

ADAP-KOOL

Menu operation via AKM

2 Menu operation RC.1J.80.02 © Danfoss 09/95 AKC 24W2 Version 1.0X

Menu list This menu function can be used together with system software type AKM. The

description is divided up into function groups that can be displayed on the PC screen.

Within each group it is now possible to show the measured values, or settings.

Regarding the use of AKM, reference is made to the AKM Manual.

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

with the code number: 084B2027 and fitted with software version 1.0x.

The operation is divided up into several

function groups. When a selection has been

made, push “OK”, and you may continue from

the next display. By way of example, the

Injection Ctrl A group has been selected here.

From the measure line the different values can

be read. The values are constantly updated.

In the list of settings the set values can be

seen. If a setting has to be changed, select the

parameter and proceed via “OK”.

Function groups

Enter the new value or move the sliding scale up

or down. The new value will apply, when “OK” is

pushed.

Set the required value and

push “OK”

The various measurements can be read directly. If a graphic display of the

measurements is required, up to eight of them can be shown. Select the required

measurements and push “Trend”.

Settings There are four kinds of settings, ON/OFF settings, settings with a variable value, time

settings and “reset alarms”.

Measurements

AKC 24W2 Version 1.0X Menu operation RC.1J.80.02 © Danfoss 09/95 3

Go through the individual functions one by one and make the required settings. When

settings have been made for one controller, the set values may be used as basis in

the other controllers

of the same type

and

with the same software version

. Copy the

settings by using the function in the AKM programme, and adjust subsequently any

settings where there are deviations.

NB! If a list is required for noting down the individual settings, a printout can

be made of it with a function in the AKM programme. Read the next section,

“Documentation”.

Documentation Documentation of the settings of the individual controllers can be made with the print

function in the AKM programme. Select the controller for which documentation of the

settings is required and select the “Print Settings” function (df. also the AKM Manual).

Functions Indicated below are function groups with corresponding measurements and settings.

A printout of the given settings can be made using the AKM function “Print Settings”

(see above).

Alarms

See page 10.

Main Function

Measurements AKC Error When “ON”, there is an alarm message. See page 10.

AKV OD A % Actual opening degree of valve

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

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

AKV OD B% Actual opening degree of valve

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

S2-S1 B K Superheat of evaporator measured with the sensor P0B and S2

Rfg.Type R Choosen refrigerant

Settings MainSwitch Main Switch 1: Regulation

0: Controller stop

-1: Service mode

Cool/Heat Selection of regulation: 1: Refrigeration

2: Heat pump

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

1: R12 11: R114

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

4 Menu operation RC.1J.80.02 © Danfoss 09/95 AKC 24W2 Version 1.0X

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

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

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

Network ON: When alarms are registered via PC or Gateway printer

OFF: When alarms are registered via AKA 21, only

Capacity Ctrl.

Measurements AKC Error When “ON”, there is an alarm message. See page 10.

AKV OD A % Actual opening degree of valve

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

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

AKV OD B% Actual opening degree of valve

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

S2-S1 B K Superheat of evaporator measured with the sensor P0B and S2

Ref. °C Media temperature reference incl. external reference signal (if used)

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

Safety A Statement of safety circuit connected to terminals DI 1 (control A)

Safety B Statement of safety circuit connected to terminals DI 2 (control B)

RunTimeA h Operating time for compessor A. Example: If 120 is displayed, the operating time is

1200 hours

RunTimeB h Operating time for compessor B. Example: If 1200 is displayed, the operating time is

12000 hours

Media °C Media temperature

Limit °C Temperature measured on sensor defined as “Limit” sensor

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

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

DO 9 Status of output DO 9 (extra capacity)

Settings MainSwitch Main Switch 1: Regulation

0: Controller stop

-1: Service mode

Cap.Ctrl. Choose capacity control ON/OFF

Media °C Reference value of media temperature

NZ K Neutral zone for media temperature

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

Media Al°C Upper alarm limit for media temperature. Absolute value.

AKC 24W2 Version 1.0X Menu operation RC.1J.80.02 © Danfoss 09/95 5

Injection Ctrl. A

Measurements AKC Error When “ON”, there is an alarm message. See page 10.

AKV OD A % Actual opening degree of valve

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

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

AKV OD B% Actual opening degree of valve

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

S2-S1 B K Superheat of evaporator measured with the sensor P0B and S2

SH Ref.A K Actual superheat reference of the control

S2 A °C Refrigerant temperature at evaporator outlet

Settings MainSwitch Main Switch 1: Regulation

0: Controller stop

-1: Service mode

Inj Ctrl A Choose expansion valve function ON/OFF

MOP Choose MOP function ON/OFF

MOP °C Value of MOP point

Injection Ctrl. B

Measurements AKC Error When “ON”, there is an alarm message. See page 10.

AKV OD A % Actual opening degree of valve

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

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

AKV OD B% Actual opening degree of valve

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

S2-S1 B K Superheat of evaporator measured with the sensor P0B and S2

SH Ref.B K Actual superheat reference of the control

S2 B °C Refrigerant temperature at evaporator outlet

Settings MainSwitch Main Switch 1: Regulation

0: Controller stop

-1: Service mode

Inj Ctrl B Choose expansion valve function ON/OFF

MOP Choose MOP function ON/OFF

MOP °C Value of MOP point

6 Menu operation RC.1J.80.02 © Danfoss 09/95 AKC 24W2 Version 1.0X

Extended capacity Ctrl.

Measurements AKC Error When “ON”, there is an alarm message. See page 10.

AKV OD A % Actual opening degree of valve

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

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

AKV OD B% Actual opening degree of valve

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

S2-S1 B K Superheat of evaporator measured with the sensor P0B and S2

Settings MainSwitch Main Switch 1: Regulation

0: Controller stop

-1: Service mode

+Zone s Time delay between step cut-ins in the regulating band above the neutral zone. Set in

seconds.

-Zone s Time delay between step cut-outs in the regulating band below the neutral zone. Set in

seconds.

Max step A Definition of compressor A steps

Max step Definition of total number of steps. (sum of steps: compressor A + compressor B)

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

0: No connection

1: 0 - 10 V signal

2: 2 - 10 V signal

P tau s Special function. Modification of settings by Danfoss only.

++Zone s Time delay between step cut-ins in the regulating band above the “+zone-band”.

Set in seconds.

+Zone K Regulating band above neutral zone

-Zone K Regulating band below neutral zone

--Zone s Time delay between step cut-outs in the regulating band below the “ zone-band”.

Set in seconds.

Del A min. Minimum time before compressor A can be restarted. Set in minutes.

Del B min. Minimum time before compressor B can be restarted. Set in minutes.

MaxTimeA h Setting of hour counter for next compressor service to be performed (compressor A)

MaxTimeB h Setting of hour counter for next compressor service to be performed (compressor B)

Media Sens Selection of sensor input for measuring media temperature

1: S3

2: S4

3: P0 A

4: P0 B

5: P AUX

Limit Sens Selection of sensor input for limit measurement

0: No sensor

1: S3

2: S4

3: P0 A

4: P0 B

5: P AUX

6: Lowest P0 A or P0 B

Time share Priorities for operation of compressors A and B:

1: A starts before B

2: B starts before A

3: Equalisation of operating time

Time diff Max. time difference prior to change-over (at Time Share = “3”)

Me.Al.diff Alarm differential for media temperature

Lim.dif. K Alarm differential for low media temperature (“Limit” sensor)

Lim.dly s Time delay for “Limit” alarm compressor cutouts

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

DO 9 mode Additional capacity required

1: Because all steps are cut-in

2: The media temperature sensor registers a higher value than the one set in the next

DO 9 set °C Temperature value where additional capacity is cut-in (see previous menu, setting 2)

DO 9 diff K Temperature differential for previous menu

Step mode Step cut-outs with two compressors

1: Last in, first out

2: Change of sequence! (eg. 7-6-4-5-3)

AKC 24W2 Version 1.0X Menu operation RC.1J.80.02 © Danfoss 09/95 7

Extended Injection Ctrl.A

Measurements AKC Error When “ON”, there is an alarm message. See page 10.

AKV OD A % Actual opening degree of valve

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

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

AKV OD B% Actual opening degree of valve

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

S2-S1 B K Superheat of evaporator measured with the sensor P0B and S2

Settings MainSwitch Main Switch 1: Regulation

0: Controller stop

-1: Service mode

SH Min K Min. value of superheat reference

SH Max K Max. value of superheat reference

Tper.sec. Period time. (Minimum time between two automatic reductions of the superheat reference

= 1.5 x Tper. Integration time = 0.8 x Tper)

AKV max % The AKV valves max. permissible opening degree

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

(The value must be lower than SH min.)

KP P0 A Amplification factor. Used by Danfoss only

KP Min Amplification factor. Used by Danfoss only

KP Max Amplification factor. Used by Danfoss only

Extended Injection Ctrl.B

Measurements AKC Error When “ON”, there is an alarm message. See page 10.

AKV OD A % Actual opening degree of valve

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

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

AKV OD B% Actual opening degree of valve

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

S2-S1 B K Superheat of evaporator measured with the sensor P0B and S2

Settings MainSwitch Main Switch 1: Regulation

0: Controller stop

-1: Service mode

SH Min K Min. value of superheat reference

SH Max K Max. value of superheat reference

Tper.sec. Period time. (Minimum time between two automatic reductions of the superheat reference

= 1.5 x Tper. Integration time = 0.8 x Tper)

AKV max % The AKV valves max. permissible opening degree

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

(The value must be lower than SH min.)

KP P0 B Amplification factor. Used by Danfoss only

KP Min Amplification factor. Used by Danfoss only

KP Max Amplification factor. Used by Danfoss only

Error dest. 0=No 1=HW+DB 2=DB

Measurements AKC Error When “ON”, there is an alarm message. See page 10.

AKV OD A % Actual opening degree of valve

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

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

AKV OD B% Actual opening degree of valve

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

S2-S1 B K Superheat of evaporator measured with the sensor P0B and S2

Settings MainSwitch Main Switch 1: Regulation

0: Controller stop

-1: Service mode

Set the priority for the following alarm texts (choose between 1, 2 or 0. They have the following meaning:)

1: Alarm at relay output + DANBUSS

message

2: DANBUSS

message only

0: No alarm and no DANBUSS

message

The individual alarms are explained in more detail on page 10.

StdbyDest (Control stopped) (Standby Mode)

RfgChange (Changed refrigerant) (Rfg.Type changed after pow-up)

NoRfgDest (No selection of refrigerant) (Rfg. Type Not selected)

S3MaxDest (Too high media temperature) (Too high Media temperature)

S4CutDest (Low temperature. Risk of frost) (Cut off below Limit temp.)

SafetyA (Cut-out in safety circuit) (Safety A Cutout)

SafetyB (Cut-out in safety circuit) (Safety B Cutout)

MaxStepA (Programming error) (Max step A > Max step)

ServADest (Service information) (Time for Compr. A inspection)

Service Mode

Measurements AKC Error When “ON”, there is an alarm message. See page 10.

AKV OD A % Actual opening degree of valve

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

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

AKV OD B% Actual opening degree of valve

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

S2-S1 B K Superheat of evaporator measured with the sensor P0B and S2

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

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

Paux Bar Pressure measured with pressure transmitter connected to Paux inlet

S2 A °C Refrigerant temperature at evaporator outlet control A

S2 B °C Refrigerant temperature at evaporator outlet control B

S3 °C Media temperature measured with S3 sensor

S4 °C Temperature measured with S4 sensor

Ext.ref. V Registered temperature value of external reference connected to terminal “REF”

DI 3 Statement of cut-off function connected to terminal “DI 3”

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

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

Settings MainSwitch Main Switch 1: Regulation

0: Controller stop

-1: Service mode

Man.Ctrl. ON: Manual setting allowed.

PLEASE NOTE: No monitoring

When manual setting has been completed, setting must be changed to OFF

AKV A % Forced operation of the expansion valves opening degree, control A. (terminal A71-72)

AKV B % Forced operation of the expansion valves opening degree, control B. (Terminal B71-72)

Step 8 Forced servo operation of outlet DO8. ON => 24 V a.c. on C3/C4

More Cap. Forced servo operation of outlet DO9. ON => 24 V a.c. on D3/D4

Step 1 Forced servo operation of outlet DO1. ON => 24 V a.c. on X1/X2

Step 2 Forced servo operation of outlet DO2. ON => 24 V a.c. on X3/X4

Step 3 Forced servo operation of outlet DO3. ON => 24 V a.c. on X5/X6

Step 4 Forced servo operation of outlet DO4. ON => 24 V a.c. on X7/X8

Step 5 Forced servo operation of outlet DO5. ON => 24 V a.c. on Y1/Y2

Step 6 Forced servo operation of outlet DO6. ON => 24 V a.c. on Y3/Y4

Step 7 Forced servo operation of outlet DO7. ON => 24 V a.c. on Y5/Y6

Alarm Out Forced servo operation of alarm outlet. ON => 24 V (220 V) a.c. on Y7/Y8

(no alarm)

AKM menu "For Danfoss only"

This menu contains data and setting values for special internal controller functions.

Do not chage the stated values.

Alarms

Alarms may be acknowledged one by one

selecting one, and then pushing “OK”.

An alarm message will now appeat. e.g.:

Push "OK" to acknowledge.

The menu display for alarms shows the active alarms. Dots will appear at the top of the menu

for as long as data is being obtained.

The following alarm messages may occur:

Alarm message Meaning Action/Cause

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 transmitter error Check connection

Paux Error Pressure transmitter error Check connection

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

stopped" or "Service"

Time for Compr.( ) Inspection Serice Information The operating time set for the compressor has been

reached. Plan Service

Rfg.Type change after pow_up Changed refrigerant Check chosen refrigerant. Regulation with changed

refrigerant not possible before the controller has been de-

energized

Rfg. Type not selected No selection of refrigerant Select refrigerant

Too high media temperature Too high media temperature

Cut off below Limit temp. Low temp. Risk of frost Wait for temperature rise.

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

Max step A > Max step Programming error Correction of data

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. AKM Installation guide

Brand: Danfoss

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

Type: Installation guide

Danfoss Controller type AKC24W2 for controlling of water chillers. Vers. 1.0x. AKM has the following features:

Menu operation via AKM
ADAP-KOOL®
Controlling water chillers

This device allows for a variety of measurements and settings, including:

Measurements:
AKC Error
AKV OD A %
P0/S1 A °C
S2-S1 A K
AKV OD B%
P0/S1 B °C
S2-S1 B K
Rfg.Type R
DI 3
Safety A
Safety B
RunTimeA h
Media °C
Limit °C
Compr.A %
Compr.B %
DO 9
Settings:
MainSwitch
Cool/Heat
Rfg

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

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

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