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AK-PC 

572 

User 

Guide RS8KH202 © Danfoss 2019-03 

23

AKS 32R /
AKS 2050 /
MBS 8250

10-90% ratiometric

HIGH PRESSURE MODULE  

Address = 96

Supply voltage to high pressure module

The power supply can be taken from the main module. It is 
important that + is connected to +.

Battery

Ensure that the valve closes if there is no supply voltage.

Stepper valve 

FX ventil type CCMT. 
Connector:
5: WHITE
6: BLACK
7: RED
8: GREEN

Canbus

Data communication to the main module.

Sensor inputs

• Pt 1000 ohm, AKS 11 or  AKS 21.

Contact input AUX 2

Signal from oil level, 
or input for fan alarm or another alarm.

Relay output AUX 2

Activation of de-superheating or hot gas dump.

RECEIVER MODULE    

Address  = 97

Supply voltage to high pressure module

The power supply can be taken from the main module. It is 
important that + is connected to +.

Battery

Ensure that the valve closes if there is no supply voltage.

Stepper valve 

FX valve type CCMT. 
Connector:
5: WHITE
6: BLACK
7: RED
8: GREEN

Canbus

Data communication to the main module.
The section must be terminated using a 120 ohm resistor.

Contact input AUX 3

Signal from heat recovery, 
or input for fan alarm or another alarm.

Relay output AUX 3

Activation of heat recovery, 
or AUX 3 output for de-superheating or hot gas dump.

MAIN MODULE

AO - Analog output, 3 pcs. AO1, AO3, AO4

Must be used if using frequency converters or EC motors. 
Connect 24 V on N and L (separate power supply) Avoid earth 
fault current.
 - Use double-insulated transformer. The secondary side must 
not be earthed. 
Obtain 0-10 volts from terminals Com-AO1, N-AO3 and N-AO4. 
PAY ATTENTION TO THE POLARITY of N.
(AO3 and AO4 are galvanically isolated. AO1 is not).

AI - Analog inputs, 

Pressure transmitters, 4 pcs. AI1 - AI4

Temperature sensors, 4 pcs. AI5 - AI8

• Pt 1000 ohm, AKS 11 or AKS 21.

DI - Digital switch inputs, 8 pcs. DI1 - DI8

The connection may be a shut-down or interruption function. 
Select what is to be activated during configuration.
(DI3 can be used as an AUX1 input, but only if regulated with 2 
MT compressors).

Supply

24 V a.c. or d.c. Class II is required.

AK-PC 572 

17 VA

EXD 316, HP 

10 VA

EXD 316,  rec 

10 VA

Stepper valve, HP  _ _VA
Stepper valve rec.  _ _VA

Canbus

Communication to the high pressure module and to the receiver 
module
"L" to "L" and "H" to "H" 
A jumper must be connected between "H" and "R".
Terminate on the receiver module with a resistance of 120 ohm. 
If mounting an external display, the termination must be done 
differently. See next page.

Important!
In order to set the addresses 96 and 97, you must follow the re-
commended procedure. See next page.

Modbus

It is important that the installation of the data communication 
cable is carried out correctly. See separate literature, no. RC8AC.
Remember termination at the termination points.

DO - Digital outputs, 8 pcs.  DO1-DO8

DO5 and DO6 are solid state relays. The outputs are used for 
connecting a Bitzer CRII. If a Bitzer CRII is not being connected, 
output DO6 can be used for activation of an oil valve.
The relays are de-rated to the specified values.
The alarm relay will be driven under normal operation and 
will drop in the event of alarms and insufficient voltage to the 
controller.  
(DO3 can be used as an AUX1 output, but only if regulated with 
2 MT compressors).

Содержание ADAP-KOOL AK-PC 572

Страница 1: ...Capacity controller for CO2 mini pack AK PC 572 User Guide ADAP KOOL Refrigeration Control System...

Страница 2: ...t available This could for example be used as an alarm input If the compressor used is not a Bitzer CRII a solid state output can be used for oil management If heat recovery is not used the AUX3 funct...

Страница 3: ...point Based on the configured reference the controller will permit an offset of up to 8K depending on the other control parameters For example Night time increase Fixed 5 K on the MT circuit only Po o...

Страница 4: ...in the transcritical area Reference It is controlled using variable references An outdoor temperature sensor Sc3 must be installed The sensor must be positioned so that it registers the correct out d...

Страница 5: ...overy has been reached and the DI signal disappears the reference will drop once again though it will do so over the course of a few minutes to prevent abrupt changes in the reference A potential rela...

Страница 6: ...UX2 DI It can then be used as an alarm input AUX2 DO The potential relay output can be freely used for liquid injection DE SH or hot gas dumping AUX3 DI This function shares an input with the heat rec...

Страница 7: ...et capacity in night operation e g 25 but with a minimum of one step In the event of a Pgc error the fan capacity that corresponds to how much compressor capacity is connected will cut in Compressor r...

Страница 8: ...will depend on how the set up is made They will illustrate what is regulated Click on the Right Arrow to view e g the following images When an alarm is sent from the con troller you must advance to t...

Страница 9: ...ined on the pages that follow Start screen upon delivery Set up overview There are 2 ways in which the controller can be set up Select the one that is easiest for you either Wizard or a review of all...

Страница 10: ...read as a of total capacity No of running comp The number of compressors in operation can be read here MC PoMT offset The size of a reference displacement on PoMT required from the system unit suction...

Страница 11: ...under Compressor mode Min 1 m3h Max 20 m3h Fac 1 m3h Comp 2 size Set the nominal compressor capacity for compressor 2 Min 1 m3h Max 20 m3h Fac 1 m3h Comp 3 size Set the nominal compressor capacity fo...

Страница 12: ...lation Yes Regulating is carried out without this compressor and no alarms are generated by it Yes No Fac No Comp 2 The same function for the remaining compressors Suction LT Suction group LT Please s...

Страница 13: ...e should be started with a signal on a DI input here No No function DI only A DI input is reserved When a signal is registered the heat recovery function refer ence will become active DI and DO Choose...

Страница 14: ...you can override the hot gas valve Only if hot gas dump is defined in the AUX section Auto Man on Man off Oil Control Limitation It is only possible to use oil management if the solid state outputs DO...

Страница 15: ...be used for an optional function You can choose between the functions Fan error or Alarm D demand DI AUX2 If level signals are not desired for oil management the DI on the high pressure module input w...

Страница 16: ...clock Date and time Used by weekly plan and alarm function Year month date Hours minutes Network Network Modbus Address Set the address of the controller here if it is connected to a system device vi...

Страница 17: ...e MT circuit Once a signal is received the circuit will cut out 6 Signal from the high pressure switch in the LT circuit Once a signal is received the circuit will cut out 7 Signal from compressor 1 i...

Страница 18: ...tch to Auto when the override is to be completed Auto Man 0 100 Expansion modules Manual control of a connection in the HP module and receiver module During normal regulation the function of the outpu...

Страница 19: ...imit for SdMT discharge temperature has been exceeded 10K below safety limit High disch temp SdMT Critical Comp 1MT High disch temp Safety limit for discharge gas temperature has been exceeded Compres...

Страница 20: ...rsion must be 1 13 or newer Once the display s software version has been checked check the display s settings as follows 1 Hold the Enter key and the X key down for 5 seconds until the Bios menu appea...

Страница 21: ...e HP module 97 for the receiver module The addresses will only be used internally between the three modules If anything has gone wrong the two valve modules will have acti vated the function EXD reset...

Страница 22: ...cation and display must be kept separate from high voltage 230 V electric cables Use separate cable trays Keep a distance between high voltage and signal cables of at least 10 cm Cables longer than 3...

Страница 23: ...10 volts from terminals Com AO1 N AO3 and N AO4 PAY ATTENTION TO THE POLARITY of N AO3 and AO4 are galvanically isolated AO1 is not AI Analog inputs Pressure transmitters 4 pcs AI1 AI4 Temperature sen...

Страница 24: ...rnal display If an external display is connected it must be connected to the controller using a wire with a plug See order Communication will take place via Canbus The Canbus termination must be moved...

Страница 25: ...rting As a result the evaporators will not be filled with fluid that can be led to a compressor when the regulation process restarts This function can be achieved through data communication Alternativ...

Страница 26: ...mm2 multi core Approvals EU Low Voltage Directive and EMC demands re CE marking complied with LVD tested acc EN 60730 1 and EN 60730 2 9 EMC tested acc EN61000 6 2 and 3 UL approval Data Pressure tra...

Страница 27: ...G0320 EXD 316 Valve driver Operation from AK PC 572 24 V 084B8042 MMIGRS2 Display unit With buttons and display 080G0294 Wire for display unit L 1 5 m 1 pcs 080G0075 L 3 m 1 pcs 080G0076 List of liter...

Страница 28: ...forbeholder sig ret til uden forudg ende varsel at foretage ndringer i sine produkter herunder i produkter som allerede er i ordre s fremt dette kan ske uden at ndre allerede aftalte specifikationer...

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