Danfoss AK-PC 560 Installation guide
Instructions
AK-PC 560
Identification
Principle
084B8013
Dimensions
Danfoss
84B2330.11
RI8PM102 09-2011
NZ control PI or P control
ENGLISH
Connections
Necessary connections
Terminals:
1-2 Supply voltage 24 V a.c.
4-5 Relay outputs for digital scroll compressor
6-7 Solid state relay for digital scroll compressor's unloader
8- 19 Relay outputs for either compressors or fan motors
22-24 Alarm relay *
There is connection between 22 and 24 in alarm situa tions
and when the controller is dead
27-28 4 V signal to start / stop of regulation
27-29 24 V signal from the safety circuit Digital scroll
30 No function
27-31 24 V signal from the safety circuit DO 3
27-32 24 V signal from the safety circuit DO 4
27-33 24 V signal from the safety circuit DO 5
27-34 24 V signal from the safety circuit DO 6
27-35 24 V signal from the safety circuit DO 7
27-36 24 V signal from the safety circuit DO 8
57-59 Suction pressure. Voltage signal from AKS 32R **
60-62 Condenser pressure. Voltage signal from AKS 32R **
P0/Pc: AKS 32R:
1 = Black = +
2 = Blue = 3 = Brown = s
(R=1680 ohm)
All inputs are low-voltage.
Relay output 1-8 are low voltage.
Relay output 9 and 10 may be
high voltage.
Data communication
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
(see settings page 12)
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 Saux. Discharge gas temperature.
Sensor signal from Pt 1000 (AKS 21) or Copeland-NTC and
with supplied resistor mounted.
54-55 Outdoor ambient temperature (Sc3). Sensor signal from Pt
1000, AKS 11 or AKS 21 (mounted if r33 = 2 or 4).
54-56 Air temperature at condenser outlet. Sensor signal from a
Pt 1000, AKS 11 or AKS 21.
Data communication
25-26 Mount only, if a data communication module has been
fitted.
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 communication cable be done correctly. Cf. separate literature No.
RC8AC.
*)
Relays DO9 and DO10 may in special cases be reconfigurated so that they can be
used as fan relays.
**)
If the controller has to control only the compressor or the fans, respectively Pc and P0
sensor can be dispensed
2 Instructions RI8PM102 © Danfoss 09/2011 AK-PC 560
Compressor configuration when o61 =1 or 2 (This is where you can choose between the options
shown.)
Setting "c16" will define the configuration.
Setting "c08" will define coupling mode.
Compressor connections
Coupling
mode
Capacity step
All capacity steps are presumed to be identi-
cal.
Relay no.
Set
"c16"
to
Set
"c08"
to
Coupling mode
Coupling mode 1 = sequential operation.
Compressor 1 will be the first to start. Then
compressor 2 and so on.
Coupling mode 2 = cyclic operation.
Compressor 1 will always be in operation
when cooling is required. After this the compressor with the lowest number of operating
hours will be started.
The capacity from the digital scroll compressor
The capacity is divided into period times as "PWM per". 100% capacity is delivered when cooling takes place for the whole period.
An off time is required by the by-pass valve within the period and an on time is also permitted. There is "no cooling" when the
valve is on.
The controller itself calculates the capacity needed and will then vary it according to the cut-in time of the by-pass valve.
A limit is introduced if low capacity is needed so that the cooling does not go below 10%. This is because the compressor can
cool itself. This value can be increased if necessary.
The capacity can similarly be limited so that the compressor cannot deliver 100% capacity. It is not normally necessary to limit
this max. capacity.
Refrigeration
No refrigeration
AK-PC 560 Instructions RI8PM102 © Danfoss 09/2011 3
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