Danfoss AK-PC 520 Installation guide [da]

Instructions

AK-PC 520

Identication

Principle

084B8012

Dimensions

Danfoss

84B2330.11

RI8NM252 12-2009

NZ control PI or P control

Connections

ENGLISH

Danfoss

84B2869.10

P0/Pc: AKS 32R: 1 = Black = + 2 = Blue = 3 = Brown = s

Compressor control with temperature

o06 = 0 o81 = 1

All inputs are low-voltage. All relay outputs may be high-voltage.

Necessary connections

Terminals: 1-2 Supply voltage 24 V a.c. 4- 19 Relay outputs for either compressors, unloaders or fan mo-

tors

22-24 Alarm relay

There is connection between 22 and 24 in alarm situa tions and when the controller is dead

27-28 24 V signal to start / stop of regulation 27-29 24 V signal from the safety circuit DO 1 27-30 24 V signal from the safety circuit DO 2 27-31 24 V signal from the safety circuit DO 3 27-32 24 V signal from the safety circuit DO 4 57-59 Suction pressure. Voltage signal from AKS 32R ** 60-62 Condenser pressure. Voltage signal from AKS 32R **

Unloader

If an output is used for an unloader it is not neccessary to wire the belonging safety circuit. Ex. with an unloader on DO2 a connection on terminal 30 can be left out

Application dependent connections

20-21 AKD start/stop *

The relay cutin when the frequency converter have to

start. 37-38 Voltage signal to external condenser control 39-41 Possibility of connecting an external display type EKA 163

or display of Pc 42-44 Possibility of connecting an external display type EKA 163

for display of P0, or EKA 165 for operation and display of

P0 45-46 DI1 - Contact function for alarm signal 45-47 DI2 - Contact function for alarm signal 48-49 DI3 - Contact function for alarm signal 48-50 DI4 - Contact function for displacement of the suction

pressure reference or for alarm signal. 51-52 DI5 - Contact function for displacement of the condenser

pressure reference or for alarm signal. 51-53 Separate sensor Saux1. Sensor signal fra AKS 11, AKS 12 or

EKS 111 54-55 Out temperature (Sc3). Sensor signal from AKS 11, AKS 12

or EKS 111 (mounted if r33 =2 or 4) 54-56 Air temperature at condenser outlet. Sensor signal from

AKS 11, AKS 12 or EKS 111

Data communication

25-26 Mount only, if a data communication module has been

mounted.

For ethernet communication the plug connection RJ45

must be used. (LON FTT10 can also be connected in this

way.

It is important that the installation of the data communi-

cation cable be done correctly. Cf. separate literature No.

RC8AC.

*) Relay DO9 may in special cases be recongurated.

**)

• If the controller has to control only the comrpessor or the fans, respectively Pc and

P0 sensor can be dispensed

• In brine systems temperature measurement at terminals 57-58 and 60-61 may be

used instead of pressure measurement with AKS 32R. See also o06.

2 Instructions RI8NM252 © Danfoss 12/2009 AK-PC 520

Compressor conguration when o61 =1 or 2 (This is where you can choose between the options shown.) Setting "c16" will dene the conguration. Setting "c08" will dene coupling mode.

Compressor connections

Relay no.

Set

"c16"

Coupling mode

Set

"c08"

Capacity step All capacity steps are presumed to be identical.

Coupling mode

Coupling mode 1 = sequential operation. Coupling mode 2 = cyclic operation.

Couplings

When there is cyclic operation and connections with unloaders there will in some capacity cutins and cutouts be overlappings where the unloaders from either one compressor or another may be active. In such cases the unloaders on the compressor with the lowest number of hours will be cut in, and the others cut out. The changeover will take place at 6-second intervals.

Condenser couplings

When the compressor relays have been established the turn comes to the fan relays. The rst vacant relay (DO1-DO5) will become the rst fan relay. It will be followed by the subsequent relays.

If the entire condenser capacity is to be controlled by a frequency converter, AK-PC 520 must send an analog signal about the required capacity (“c29” = 9). The signal varies from 0 to 10 V. Signal and capacity have the following context.

Danfoss

84B2870.10

AK-PC 520 Instructions RI8NM252 © Danfoss 12/2009 3

Operation

Data communication

If the controller is extended with data communication, the operation can be performed from a system unit.

The importance of the alarms that are sent can be dened with the setting: 1 (High), 2 (Medium), 3 (Low) or 0 (No alarm).

Operation via external display

The values will be shown with three digits, and with a setting you can determine whether the pressures are to be shown in SI units (°C / bar) or US units (°F / psig.). There are three options for the display.

EKA 165

To operate the controller and view the evaporation pressure. If the lowermost key is pressed, the condensation pressure will be shown briey in the display. (If regulation is based only on the condensation pressure, the display will always show Pc).

During normal operation the light-emitting diodes in the display will indicate where regulation is taking place. Highest + second highest : ++Zone Second highest : +Zone "None" : Neutral zone Second lowest : -Zone Lowest+ second lowest : - - Zone

EKA 165

EKA 163

EKA 164

The buttons on the display When you want to change a setting, the upper and the lower buttons will give you a higher or lower value depending on the button you are pushing. But before you change the value, you must have access to the menu. You obtain this by pushing the upper button for a couple of seconds - you will then enter the column with parameter codes. Find the parameter code you want to change and push the middle button. When you have changed the value, save the new value by once more pushing the middle button.

The other LEDs on the display will show the functions that are active:

• Relays for compressors

• Relays for fans

• Input signals for the digital inputs

• The optimisation LED will light up when the reference is 2 K or

more over the set point.

EKA 163

If the condensation pressure is to be shown constantly, a display without operating keys can be connected.

EKA 164

To operate the controller and view the evaporation pressure. If the lowermost key is pressed, the condensation pressure will be shown briey in the display. Like the EKA 165, the LEDs in the display will show where the regulation is located.

Or short:

1. Push the upper button (long push) until a parameter is shown

2. Push one of the buttons and nd the parameter you want to

change

3. Push the middle button until the setting value is shown

4. Push one of the buttons and select the new value

5. Push the middle button again to conclude the setting

( A brief pushing wil show the active alarm codes.)

4 Instructions RI8NM252 © Danfoss 12/2009 AK-PC 520

Menu survey

Sequence

1. o61 must be set as the rst parameter. This parameter determines which of the two operating interfaces (application mode) are

activated. This must be set via the display keys. It cannot be set via data communication. (Active functions are shown below in shaded elds.)

2. Quick- start To get the system up and running quickly so that cooling can be commenced, start it by setting the following parameters (these parameters can only be set when the regulation is stopped, r12=0): r23, r28 c08, c09, c16, c29, o06, o30, o75, o76, o81 and nally r12=1.

3. Once the regulation is under way, you can go through the other parameters and adjust them in situ.

SW: 1.0x

Function

Normal display

Shows P0 in EKA 165 (display with buttons) - °C P °C / bar Shows Pc in EKA 163 - °C P °C / bar

P0 reference

Neutral zone r01 0.1°C / 0.1 bar 20°C /5.0 bar 4.0°C / 0.4 bar Correction of signal from P0 sensor r04 -50°C /-5.0 bar 50°C / 5.0 bar 0.0 Select view; SI or US. 0=SI (bar /°C), 1=US (Psig /°F) r05 0 1 0 Start/Stop of regulation Reference oset for P0 (see also r27) r13 -50°C / -5.0 bar 50°C / 5.0 bar 0.0 Set regulation setpoint for P0 r23 -99°C / -1 bar 30°C / 60.0 bar 0.0°C / 3.5 bar Shows total P0 reference

( r23 + various displacements) Limitation: P0 reference max. value

(also applies to regulation with reference displacement) Limitation: P0 referencen min. value

(also applies to regulation with reference displacement) Displacement of P0 (ON=active “r13”) r27 OFF ON OFF

Pc reference

Set regulation setpoint for Pc r28 -25°C / 0.0 bar 75°C / 110.0 bar 35°C / 15.0 bar Shows total Pc reference r29 °C / bar Limitation: Pc referencen max. value r30 -99.9°C / -0.0 bar 99.9°C/130.0bar 55.0°C / 60.0 bar Limitation: Pc referencen min. value r31 -99.9°C / 0.0 bar 99.9°C / 60.0 bar -99.9°C / 0.0 bar Correction of signal from Pc sensor r32 -50°C / -5.0 bar 50°C / 5.0 bar 0.0 Pc reference variation.1 and 2 are PI-regulation

1: Fixed reference. “r28” is used 2: Variable reference. Outdoor temperature (Sc3) included in the reference 3: As 1, but with P-regulation (Xp-band) 4: As 2, but with P-regulation (Xp-band)

Reference oset for Pc r34 -50°C / -5.0 bar 50°C / 5.0 bar 0.0 The mean temperature dierence across the condenser at maximum load

(dim tm K) The mean temperature dierence across the condenser at the lowest

relevant compressor capacity (min tm K) This is where you can see the actual pressure (P0) that is being measured

by the pressure transmitter. This is where you can see the actual pressure (T0) that is part of the regu-

lation. From the sensor which is dened in “o81”

Capacity

Min. ON time for relays c01 0 min 30 min. 0 Min. time period between cutins of same relay c07 0 min. 60 min 4 Denition of regulation mode

1: Sequential (step mode / FILO) 2: Cyclic (step mode / FIFO)

If a regulation mode with unloaders is selected, the relay must be dened to: 0: Cut in when more capacity is required 1: Cut out when more capacity is required

Regulation parameter for + Zone Regulation parameter for + Zone

Parameter

r12 OFF ON OFF

r24 °C / bar

r25 -99°C / -1.0 bar 30°C / 60.0 bar 30.0°C / 40.0 bar

r26 -99°C / -1.0 bar 30°C / 40.0 bar -99.9°C / -1.0 bar

r33 1 4 1

r35 3.0 50.0 10.0

r56 3.0 50.0 8.0

r57 °C / bar

r58 °C

c08 1 2 1

c09 0 1 0

c10 0.1 K / 0.1 bar 20 K / 2.0 bar 4.0 / 0.4 bar c11 0.1 min 60 min 4.0

o61 =

1 2

Min. Max. Factory

setting

To be continued

AK-PC 520 Instructions RI8NM252 © Danfoss 12/2009 5

Regulation parameter for ++ Zone c12 0.1 min. 20 min 2.0 Regulation parameter for - Zone

c13 0.1 K / 0.1 bar 20 K / 2.0 bar 4.0 / 0.3 bar Regulation parameter for - Zone c14 0.1 min. 60 min 1.0 Regulation parameter for - - Zone c15 0.02 min. 20 min 0.5 Denition of compressor connections.

See options on page 3

c16 1 8 0

Denition of condenser:

1-4: Total number of fan relay 5-8: Not used 9: Only via analog output and start of frequency converter

c29 0/OFF 14 0

10: Not used 11- 14: Total number of fan relays (1-4) which are to be connected with

alternating start-up. Cut in compressor capacity with manual control. See also “c32” c31 0% 100% 0 Manual control of compressor capacity (when ON, the value in “c31” will

be used)

c32 OFF ON OFF

Pump down limit. Limit value where the last compressor is cut out. c33 -99.9°C / -1.0 bar 100°C / 60 bar 100°C / 60 bar Proportinal band Xp for (P= 100/Xp) condenser regulation n04 0.2 K / 0.2 bar 40.0 K / 10.0 bar 10.0 K / 3.0 bar I: Integration time Tn for condenser regulation n05 30 s 600 s 150 Cutin condenser capacity with manual control. See also “n53” n52 0% 100% 0 Manual control of condenser capacity (when ON, the value in “n52” will

be used) Start speed The voltage for the speed regulation is kept at 0V until the

regulation requires a higher value than the value set here. Min. speed. The voltage for the speed regulation switches to 0V when the

regulation requires a lower value than the value set here.

n53 OFF ON OFF

n54 0% 75% 20%

n55 0% 50% 10%

Alarm

Delay time for a A32 alarm A03 0 min. 90 min. 0 min. Low alarm and safety limit for P0 A11 -99°C / -1.0 bar 30°C / 40 bar -40°C / 0.5 bar Delay time for a DI1 alarm A27 0 min. (-1=OFF) 999 min. OFF Delay time for a DI2 alarm A28 0 min. (-1=OFF) 999 min. OFF Delay time for a DI3 alarm A29 0 min. (-1=OFF) 999 min. OFF Upper alarm and safety limit for Pc A30 -10 °C / 0.0 bar 200°C/200.0 bar 60.0°C / 60.0 bar Upper alarm limit for sensor "Saux1" A32 1°C (0=OFF) 140°C OFF Delay time for a P0 alarm A44 0 min. (-1=OFF) 999 min. 0 min. Delay time for a Pc alarm A45 0 min. (-1=OFF) 999 min. 0 min.

Miscellaneous

Controllers address o03* 1 990 On/o switch (service-pin message) o04* - Access code

o05 1 (0=OFF) 100 OFF Used sensor type for Sc3, Sc4 and "Saux1" 0=PT1000, 1=PTC1000

o06 0 7 (1) 0 2-7=variations with temperature sensor on P0 and Pc. See manual. Set supply voltage frequency o12 50 Hz 60 H 0

Manual control of outputs:

0: No override 1-10: 1 will cut in relay 1, 2 relay 2, etc.

o18 0 18 0 11-18: Gives voltage signal on the analog output. (11 gives 1.25 V, and so on in steps of 1.25 V

P0 pressure transmitter’s working range - min. value o20 -1 bar 0 bar -1.0 P0 pressure transmitter’s working range - max. value o21 1 bar 200 bar 12.0

Use of DI4-input 0=not used. 1=P0 displacement. 2=alarm function. Alarm="A31"

o22 0 2 0

Operating hours of relay 1 (value time 1000) o23 0.0 h 99.9 h 0.0

Operating hours of relay 2 (value time 1000) o24 0.0 h 99.9 h 0.0

Operating hours of relay 3 (value time 1000 o25 0.0 h 99.9 h 0.0

Operating hours of relay 4 (value time 1000) o26 0.0 h 99.9 h 0.0 Setting of refrigerant

1=R12. 2=R22. 3=R134a. 4=R502. 5=R717. 6=R13. 7=R13b1. 8=R23. 9=R500. 10=R503. 11=R114. 12=R142b. 13=User dened. 14=R32. 15=R227. 16=R401A. 17=R507. 18=R402A. 19=R404A. 20=R407C.

o30 0 31 0

21=R407A. 22=R407B. 23=R410A. 24=R170. 25=R290. 26=R600. 27=R600a. 28=R744. 29=R1270. 30=R417A. 31=R422A.

* this setting is only possible if data communication module is mounted in the controller

To be continued

6 Instructions RI8NM252 © Danfoss 12/2009 AK-PC 520

Use of DI5-input 0=not used. 1=Pc displacment. 2=alarm function. Alarm="A32" Pc pressure transmitter’s working range - min. value o47 -1 bar 0 bar -1.0

Pc pressure transmitter’s working range - max. value o48 1 bar 200 bar 34.0 Read temperature at sensor "Saux1" o49 °C

Operating hours of relay 5 (value time 1000)

Operating hours of relay 6 (value time 1000) o51 0.0 h 99.9 h 0.0

Operating hours of relay 7 (value time 1000) o52 0.0 h 99.9 h 0.0

Operating hours of relay 8 (value time 1000) o53 0.0 h 99.9 h 0.0 Selection of application

1. Show temperature in display 2: Show pressure in display

Function for relay output DO9:

0. Start / stop of speed regulation

1. Inject on signal for evaporator control

2. Boost ready (at least one compressor is on)

3. Start /stop of condenser fan Function for relay output DO10:

0. Alarm relay

1. Start / stop of condenser fan Denition of alarm message at DI1 signal:

0. Not used

1. Fan failure (A34)

2. DI1 alarm (A28) Settings at water cooler application

Denition of signal input to the compressor regulation when regulation with temperature signal:

0. Temperature sensor on 57-58

1. Temperature sensor on Saux

2. Temperature sensor on Sc4 If frost protection is required, the setting must be 1 or 2.

Display connection O: EKA 164 On: EKA 165 (extended display with light-emitting diodes)

Service

Status on DI1 input u10 Status on DI2 input u37 Read temperature at sensor "Sc3" u44 °C Read temperature at sensor "Sc4" u45 °C Status on DI3 input u87 Status on DI4 input u88 Status on DI5 input u89

Messages can be brought up on the display by briey pressing the uppermost key. If there is more than one alarm, they can be scrolled through

o37 0 2 0

o50 0.0 h 99.9 h 0.0

o61 1 2 1 2 1

o75 0 3 0

o76 0 1 0

o78 0 2 0

o81 0 2 0

o82 O On O

Factory setting If you need to return to the factory-set values, it can be done in this way:

- Cut out the supply voltage to the controller

- Keep the upper and the lower button depressed at the same time as you recon nect the supply voltage

The controller can give the following messages

E1 Error

message

E2 Regulation is outside the range, or the control

A2 Alarm

message

A11 Refrigerant not selected

A17 High Pc

A19 Compressor 1 error

A20 Compressor 2 error

A21

A22

A27 Room temperature alarm (Saux1 temp.)

A28 DI 1 alarm. Terminal 46 interrupted

A29 DI 2 alarm. Terminal 47 interrupted

A30 DI 3 alarm. Terminal 49 interrupted

A31 DI 4 alarm. Terminal 50 interrupted

A32 DI 5 alarm. Terminal 52 interrupted

A34 Fan alarm. There is no signal on DI1 input

A45 Regulation stopped

S0 Status

message

S2 Wait for “c01”

S5 Wait for “c07”

S8 Wait for “c11” or “c12”

S9 Wait for “c14” or “c15”

S10 Refrigeration stopped by the internal or external

S25 Manual control of outputs

S34 Safety cutout. Setting A30 is exceeded or all

PS Info Access code is required before you have access to

Fault in controller

signal is defective

Low P0

The actual compressors safety circuit is interrupted.

Compressor 3 error

Compressor 4 error

Regulation

start/stop function

safety inputs (29-32) are open

the settings

That is to say the signal is missing on one of the terminals 29-32

Tilslutninger

DANSK

Danfoss

84B2869.10

P0/Pc: AKS 32R: 1 = Sort = + 2 = Blå = 3 = Brun = s

Kompressorregulering efter temperatur

o06 = 0 o81 = 1

Alle indgange er lavvolt. Alle relæudgange kan være højvolt.

Nødvendige tilslutninger

Klemme: 1-2 Forsyningsspænding 24 V a.c. 4- 19 Relæudgange til enten kompressorer, aastninger eller ventilatormotorer 22-24 Alarmrelæet

Der er forbindelse imellem 22 og 24 i alarmsituationer, og når regulatoren er spændingsløs.

27-28 24 V signal til start / stop af reguleringen 27-29 24 V signal fra sikkerhedskredsen DO 1 27-30 24 V signal fra sikkerhedskredsen DO 2 27-31 24 V signal fra sikkerhedskredsen DO 3 27-32 24 V signal fra sikkerhedskredsen DO 4 57-59 Sugetryk. Spændingssignal fra AKS 32R ** 60-62 Kondensatortryk. Spændingssignal fra AKS 32R **

Aastning

Hvis en udgang anvendes til en aastning, er det ikke nødvendigt, at fortråde den tilhørende sikkerhedskreds. Fx. ved en aastning på DO2 kan en tilslutning på klemme 30 udelades

Applicationbestemte tilslutninger

20-21 AKD start/stop *

Relæet slutter når frekvensomformeren skal starte. 37-38 Spændingssignal til ekstern kondensatorstyring 39-41 Mulighed for at tilslutte et eksternt display type EKA 163 (Pc-visning) 42-44 Mulighed for at tilslutte et eksternt display type EKA 163 til P0-visning, eller EKA 165 til betjening og P0-visning 45-46 DI1 - Kontaktfunktion til alarmsignal 45-47 DI2 - Kontaktfunktion til alarmsignal 48-49 DI3 - Kontaktfunktion til alarmsignal 48-50 DI4 - Kontaktfunktion til forskydning af sugetryksreferen-

cen eller til alarmsignal. 51-52 DI5 - Kontaktfunktion til forskydning af kondensatortryks-

referencen eller til alarmsignal. 51-53 Separat føler Saux1. Følersignal fra AKS 11, AKS 12 eller EKS

111 54-55 Udetemperatur (Sc3). Følersignal fra AKS 11, AKS 12 eller

EKS 111 (monteres hvis r33 = 2 eller 4). 54-56 Lufttemperatur ved kondensatorens afgang. Følersignal fra

AKS 11, AKS 12 eller EKS 111

Datakommunikation

25-26 Monteres kun, hvis der også er monteret et datakommuni-

kationsmodul.

Hvis det er en ethernetkommunikation skal stiktilslut-

ningen RJ45 anvendes. (LON FTT10 kan også tilsluttes på

denne måde.)

Det er vigtigt, at installationen af datakommunikations-

kablet udføres korrekt.

Se separat litteratur nr. RC8AC..

*) DO9 kan i specialtilfælde omkongureres.

**)

• Hvis regulatoren kun skal styre kompressorer eller kun skal styre ventilatorer, kan Pc

henholdsvis P0 føleren undværes.

• På brineanlæg kan der i stedet for trykmåling med AKS 32R anvendes temperatur-

måling på klemme 57-58 og 60-61. Se også o06.

+ 21 hidden pages