Danfoss AK-CH 650 Manuale di servizio - Pagina 9

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Air flow status

Sc3 Air on °C

VSD Speed %

VSD safety

Heat rec. temp. °C

Heat recovery

No. of fans

Settings

Main switch

Cap. control mode

Manual capacity %

Reference mode

Setpoint °C

Dimensioning tm K

Min. tm k

Min. Reference °C

Max. Reference °C

Heat rec. SP °C

Heat rec. Cut In °C

Heat rec. CutOut °C

Xp P-band K

Tn Integr. time s

Control type

VSD Min. speed %

VSD Start speed %

Cap. limit night %

AK-CH 650 Version 2.0x

0: No RFG. select No refrigerant has been selected (monitoring of air

1: Tuning

2: OFF

3: OK

4: Little dirt

5: Dirty

6: Blocking

Outdoor temperature in °C measured with Sc3 temperature sensor

Status of analogue output signal "AO" for variable speed drive (in percent of

full scale f.ex. 0 -10 V d.c.)

Status of safety monitoring input for Variable Speed Drive

ON: Alarm on VSD A safety monitoring input

OFF: No alarm on VSD A safety monitoring input

Temperature at the sensor for the heat recovery function

Status on function "Heat recovery"

Defined number of fans

Main switch:

0: MAN (The condenser capacity will be controlled manually)

1: OFF (The capacity control will be stopped)

2: AUTO (The capacity is controlled by the PI controller)

Manual setting of condenser capacity

The value is in % of total capacity controlled by the controller

0: Set point

1: Floating

Setting of required discharge pressure in °C

Dimensioning mean temperature differential between air- and condensing

temperature at full load for the condenser in question (Typical 8 – 15K).

tm value at minimum load.

Min. permissible condensing pressure reference

Max. permissible condensing pressure reference

Condensing pressure reference when the thermostat for heat recovery is cut in.

Temperature value when the thermostat changes over to heat recovery.

Temperature value when the thermostat cuts out the heat recovery again

Proportional band for PI controller

Integration time for PI controller

Selection of regulation type:

0: P regulation

1: PI regulation

Minimum allowed speed before stop of Variable Speed drive (Low load condition)

Minimum speed for start of Variable speed drive (Must be set higher than

"VSD Min. Speed %")

Capacity limitation during night operation

flow can not start)

Monitoring function adapts to the condenser in question

Monitoring function is switched OFF

Air flow is OK

The amount of dirt decreases the performance of the condenser,

clean when possible

The amount of dirt leads to considerable air flow problems, clean

as soon as possible

The amount of dirt might lead to high pressure problems, clean

now

ON:

Regulation

OFF: Controller stopped

Reference = "PcA setpoint °C"

Reference is changed as a function of the outdoor temperature

measured by the "Sc3 air on" sensor, the set "Dimensioning tm K"

and the actual compressor load.