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User Guide 

|

 Capacity Controller, AK-PC 651

© Danfoss | ADAP-KOOL® | 2015.10  

18 | RS8HA102 | 

Alarm priorities

General

Standby mode:

Sensor error:

Refrigerant:

Output in MANUAL:

Alarm priorities

The controller will issue an alarm notification if a specific incident occurs. 

Each incident is set to indicate the importance of each alarm, but it is possible to modify the 

importance of each. Choose from between the following priority levels:

Critical:

 Important alarms that require a high level of attention.

Severe:

 Alarms of intermediate importance

Normal:

 No important alarms

Disable:

 Alarms set to this priority level will be cancelled.

Factory setting for the alarm can be seen on page 21.

Critical

Servere

Normal

Disable

Suction group 

Low pressure:

High pressure:

Compressor safety:

Condenser

High pressure:

Fan safety:

Quick setup

Quick configurations

This setting will reserve inputs and outputs for the following compressors and fans:

The various connections are shown on the next page.

App. no.

Display

Suction group

Condenser

Speed

Digital

(Scroll / 

Stream / CRII)

1-step

with 

unloa-

der

Step

Speed

17

3C2U + FS

3++

x

16

2C2U + 6F

2++

6

15

4C1U + FS

4+

x

14

3C1U + 6F

3+

6

13

2C1U + 4F

2+

4

12

8CD + FS

1

7

x

11

6CD + FS

1

6

x

10

6CD + 6F

1

5

6

9

4CD + 4F

1

3

4

8

8CS + FS

1

7

x

7

6CS + FS

1

5

x

6

6CS + 6F

1

5

6

5

4CS + 4F

1

3

4

4

8C + FS

8

x

3

6C + FS

6

x

2

6C + 6F

6

6

1

4C + 4F

4

4

0

None

After making a selection, the setting will return to “None”

After making a selection you must:

1. Set the type of refrigerant

2. Check the types of pressure transmitters 

3. Check the min. and max. settings on the pressure transmitters

Factory setting:

Po A/B = AKS 32R, min=-1.0 bar, max.=12 bar

Pc = AKS 32R, min. = -1.0 bar, max. = 34 bar

Sd comp 1 = NTC 86K ohm

Sd = Pt 1000 ohm

Sc3 = Pt 1000 ohm

Ss = Pt 1000 ohm

Setup Wizard

This wizard will lead you through the necessary settings, i.e. a total of approximately  

20 to 35 display screens, depending on what is selected along the way. 

The selection will also result in a connection to a given input and output. You yourself  

will see this connection in the IO configuration menu. If applicable, see page 20.

C = Compressor

U = Unloader

F = Fan

S = Speed

D = Digital

Summary of Contents for ADAP-KOOL AK-PC 651

Page 1: ...Capacity controller AK PC 651 User Guide ADAP KOOL Refrigeration Control System...

Page 2: ...matic safety control day night signal etc Relay outputs max 13 pcs Connection of compressors condenser fans Solid state outputs max 2 pcs Control of capacity valve on a Copeland digital scroll Control...

Page 3: ...one the control ler will cut out or cut in the next compressor in the sequence When further capacity is either cut out or cut in the capacity from the regulating compressor will be modified accordingl...

Page 4: ...of the following functions Fixed reference Variable reference which follows the outdoor temperature When the outdoor temperature drops the reference will drop by a corresponding amount This variable...

Page 5: ...scroll a Copeland stream or Bitzer CRII the capacity will be increased so that the compressor can cool down itself The compressors will be stopped if the temperature reaches the set max temperature va...

Page 6: ...n groups and 1 condenser group Each of the 3 rows above is continued with three additional displays The arrow in the top corner of the display shows the way to the next display in the same area of ope...

Page 7: ...y None Main Menu The first setting is the Plant type When the Plant type has been selected it will al low several settings to be made For example Continue to the next menus All settings are explained...

Page 8: ...s Device for configuration of compressor and condenser Select pressure or saturation temperature Can be set during initial set up and must not be subsequently changed Temp press Fac Saturated Night si...

Page 9: ...suction gas temperature can be read here Superheat The measured superheat can be read here Day Night status The status of the day night function can be read here Load shed The status of the load shed...

Page 10: ...0 s Fac 120 s Configuration Configuration Control sensor Select the regulating sensor for the suction circuit Pressure transmitter Po Media temperature sensor S4 brine regulation Po is used for safety...

Page 11: ...ed AI demand Yes No Fac No Ss suction superheat Monitoring of superheat Define whether a signal from a common Ss sensor on the suction line should be received AI demand Yes No Fac No Injection ON fct...

Page 12: ...Compressor service Compressor service Comp 1 out of service The compressor can be taken out of operation so that the controller regulates without this compressor No Normal regulation Yes Regulating i...

Page 13: ...uency converter Step on off control of fans will be via relays Variable step The signals are parallel so external wiring can switch over to step e g if the frequency converter fails AO demand Step Spe...

Page 14: ...is measured in the suction line by Po and Ss Min 0 K Max 20 K Fac 0 K Superheat Max lim Alarm limit for excess superheating Min 20 K Max 80 K Fac 80 K Superheat delay Delay time before alarm is gener...

Page 15: ...t Set the output to thermostat AI demand Yes No Fac No Thermostat cut in Here set the temperature value at which the thermostat will cut in Min 50 C Max 150 C Fac 5 C Thermostat cut out Here set the t...

Page 16: ...ation value 10 C Pressure sensors Signal type 0 20mA 4 20mA AKS32 1 5V or AKS32R 10 90 ratiometric of 5 V supply voltage Important Current types must be connected to inputs Al 1 6 Current types must b...

Page 17: ...ction is on or off Digital inputs 1 18 Status of on off inputs Here you can see the status of the function alarm Analoge outputs 1 4 Status of analogue outputs Here you can see the size of the output...

Page 18: ...on the next page App no Display Suction group Condenser Speed Digital Scroll Stream CRII 1 step with unloa der Step Speed 17 3C2U FS 3 x 16 2C2U 6F 2 6 15 4C1U FS 4 x 14 3C1U 6F 3 6 13 2C1U 4F 2 4 12...

Page 19: ...gle 8C FS 8 speed C1 C2 C3 C4 C5 C6 C7 C8 Fan VSD Alarm F speed 3 Single 6C FS 6 speed C1 C2 C3 C4 C5 C6 Fan VSD Alarm F speed 2 Single 6C 6F 6 6 C1 C2 C3 C4 C5 C6 Fan 1 Fan 2 Fan 3 Fan 4 Fan 5 Fan 6...

Page 20: ...6 Compressor start and unloaders Fans Injection ON Alarm on DO15 Digital inputs DI1 DI18 Compressor safety inputs Fan safety input External main switch start stop HP safety switch LP safety switch Nig...

Page 21: ...condensing pressure Pc has been violated 3K below safety limit High pressure Pc Critical HP safety switch cutout High safety limit for external high pressure switch has been violated DI input HP switc...

Page 22: ...oid earth fault current Use double insulated transformer The secondary side must not be earthed Obtain 0 10 volts from terminals N and AO1 respectively N and AO2 PAY ATTENTION TO THE POLARITY of N Mod...

Page 23: ...riod times as PWM per 100 capacity is delivered when cooling takes place for the whole period An off time is required by the bypass valve within the period and an on time is also permitted There is no...

Page 24: ...remaining 50 100 for the unloader The unloader is connected to DO5 or DO6 Stream 6 The compressor capacity is distributed by up to 33 for one relay and the remaining 33 100 for the unloader The unload...

Page 25: ...ed Display output For type MMIGRS2 Data communication Modbus for AK SM 800 Environments 20 60 C During operations 40 70 C During transport 20 80 Rh not condensed No shock influence vibrations Enclosur...

Page 26: ...amage poor installation or site conditions can give rise to malfunctions of the control system and ultimately lead to a plant breakdown Every possible safeguard is incorporated into our products to pr...

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