Pressure Transmitter; Primarily For Temperature Inputs; Digital Input Signal; Analogue Output Signal - Danfoss AK-CC55 User Manual

User Guide | Controller for appliance control, AK-CC55
AI1

Pressure transmitter

AKS 32R
Connect to terminal 40, 41 and 42.
(Used cable 060G1034: Black=40, Brown=41, Blue=42)
The signal from one pressure transmitter can be received by up to
10 controllers. But only if there are no significant pressure drops
between the evaporators to be controlled.
See drawing on page 39.
Please note: when replacing AK-CC550 with AK-CC55, S and
ground must be switched.
AI2 - AI7

Primarily for temperature inputs

S2
Pt 1000 ohm sensor AKS11, placed at the evaporator outlet
S3, S4, S5
Pt 1000 AKS11, PTC 1000 EKS111, NTC5K EKS211 or NTC10K
EKS221 sensor. All have to be of the same type.
S3, air sensor, placed in the warm air before the evaporator
S4, air sensor, placed in the cold air after the evaporator
(the need for either S3 or S4 can be selected in the
configuration)
S5, defrost sensor, placed in the evaporator
S6, Pt 1000 ohm sensor, food temperature sensor placed in-between
the food products
(If the Di1 input is used for a temperature measurement, it will
appear as AI7.) (AI5 by compact.)
DI1

Digital input signal.

The defined function is active when the input is short-circuited or
opened depending on the function defined in o02.
DI2
Digital input signal.
The defined function is active when the input is short-circuited or
opened depending on the function defined in o37.
AO1

Analogue output signal

Analogue 0-10 V (currently not used)
Pulse width modulated signal
Can be used for fast control of rail heat via an external power
solid state relay.
MODBUS
For data communication.
Terminal 83 = B-
Terminal 84 = A+
Terminal 85 = screen
It is important that the installation of the data communication
cable is performed correctly.
See separate literature No. RC8AC902
Supply voltage
230 V AC or 115 V AC
DO1
AKV valve
Connection of expansion valve type AKV, AKVA, AKVH or AKVP. The
coil must be a 230 V or 115 V AC coil.
66 | BC308437742037en-000101
Thermostatic Expansion Valve
Here the output is used to start cooling. Either by starting the
compressor or by opening the solenoid valve.
DO2
Alarm
There is a connection between terminal 10 and 12 in alarm
situations and when the controller is without power.
Light
There is connection between terminal 10 and 12 when the
function is on.
Rail heat, Compressor, Night blind
There is connection between terminal 10 and 11 when the
function is on.
Suction line valve
There is connection between terminal 10 and 11 when the
suction line must be open.
DO3
Compressor, Rail heat, Defrost, Drain valve, Humidity
There is connection between terminal 13 and 14 when the
function must be active.
DO4
Defrost
There is connection between terminal 15 and 16 when
defrosting takes place.
Hot gas
There is connection between terminal 15 and 16 when the hot
gas valves must open.
Please note: when replacing AK-CC550 with AK-CC55, wires must
be switched.
DO5
Light
There is connection between terminal 18 and 20 when the
function must be active.
Rail heat
There is connection between terminal 18 and 19 when the rail
heat must be on.
DO6
Fan
There is connection between terminal 21 and 22 when the fan
is on.
DO2-DO6 + AO1 and Application 9
Here, the different outputs can be custom defined in q02-q09
DI3
Digital input signal.
The signal must have a voltage of 0 / 230 V AC (115 V AC)
The function is defined in o84.
Display (RJ12 plug)
If external readings/operation of the controller is required, a
display can be connected. Two external displays can be connected
to Single Coil and Multi Coil controllers that do not have displays
on the front. One external display can be connected to Compact
version.
© Danfoss | DCS (vt) | 2019.09