Danfoss AK-CC 550A Manual de instruções - Página 6

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DO1

Connection of expansion valve type AKV or AKVA. The coil must

be a 230 V a.c. coil.

DO2

Alarm

There is a connection between terminal 7 and 8 in alarm

situations and when the controller is without power.

Rail heat and heating element in drip tray

There is connection between terminal 7 and 9 when heating

takes place.

Night blind

There is connection between terminal 7 and 9 when the night

blind is up.

Suction line valve

There is connection between terminal 7 and 9 when the

suction line must be open.

DO3

Refrigeration, Rail heat, Heat function, Defrost 2

There is connection between terminal 10 and 11 when the

function must be active.

Heating element in drip tray

There is connection between terminal 10 and 11 when heating

takes place.

DO4

Defrost

There is connection between terminal 12 and 14 when

defrosting takes place.

Hot gas / drain valve

There is connection between terminal 13 and 14 during normal

operation.

There is connection between terminal 12 and 14 when the hot

gas valves must open.

DO5

Fan

There is connection between terminal 15 and 16 when the fan

is on.

Coordinated defrost via

cable connections

Coordinated defrost via

data communication

Instructions RI8PR102 © Danfoss 6/2012

DO6

Light relay

There is connection between terminal 17 and 18 when the

light must be on.

Rail heat, Compressor 2

There is connection between terminal 17 and 19 when the

function must be active.

DI3

Digital input signal.

The signal must have a voltage of 0 / 230 V AC.

The function is defined in o84.

Data communication

If data communication is used, it is important that the installation

of the data communication cable is performed correctly.

See separate literature No. RC8AC...

Electric noise

Cables for sensors, DI inputs and data communication must be

kept separate from other electric cables:

- Use separate cable trays

- Keep a distance between cables of at least 10 cm

- Long cables at the DI input should be avoided

Installation considerations

Accidental damage, 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

prevent this. However, a wrong installation, for example, could still

present problems. Electronic controls are no substitute for normal,

good engineering practice.

Danfoss will not be responsible for any goods, or plant compo-

nents, damaged as a result of the above defects. It is the installer's

responsibility to check the installation thoroughly, and to fit the

necessary safety devices.

Special reference is made to the necessity of signals to the

controller when the compressor is stopped and to the need of

liquid receivers before the compressors.

Your local Danfoss agent will be pleased to assist with further

advice, etc.

Max. 10

The following controllers can be connected

up in this way:

EKC 204A, AK-CC 210, AK-CC 250,

AK-CC 450, AK-CC 550A,

Refrigeration is resumed when all

controllers have "released" the signal for

defrost.

The setting of controllers to coordinate

their defrosting takes place in the

gateway/system manager.

Refrigeration is resumed when all

controllers have "released" the signal for

defrost.

AK-CC 550A - 084B8070