Danfoss OPTYMA User manual

User Guide
Optyma™ control
AK-RC 111 single phase

User Guide |Optyma™ control AK-RC 111 single phase
2 | BC309238530328en-000101 © Danfoss | DCS (vt) | 2020.03
1.0 Introduction...................................................................................................................................................................3
1.1 General...................................................................................................................................................................3
1.2 Product ID codes ................................................................................................................................................3
1.3 Overall dimension..............................................................................................................................................3
1.4 Identification data..............................................................................................................................................3
2.0 Installation .....................................................................................................................................................................4
2.1 Important information for the installer......................................................................................................4
2.2 Standard assembly kit ......................................................................................................................................4
2.3 Installing the unit ...............................................................................................................................................4
3.0 Technical characteristics..........................................................................................................................................6
4.0 Parameter programming.........................................................................................................................................7
4.1 Control panel .......................................................................................................................................................7
4.2 Front keypad........................................................................................................................................................7
4.3 LED display ...........................................................................................................................................................7
4.4 General...................................................................................................................................................................8
4.5 Key to symbols ....................................................................................................................................................8
4.6 Setting and displaying the set points.........................................................................................................8
4.7 Level 1 programming (user level).................................................................................................................8
4.8 List of Level 1 variables (user level)..............................................................................................................8
4.9 Level 2 programming (installer level) .........................................................................................................9
4.10 List of Level 2 variables (installer level) ......................................................................................................9
4.11 Switching on the AK-RC 111 electronic controller..............................................................................11
4.12 Cold/hot activation/deactivation conditions........................................................................................11
4.13 Manual defrosting activation/deactivation...........................................................................................11
4.14 Defrost with heater and temperature control ......................................................................................12
4.15 Hot gas defrosting ..........................................................................................................................................12
4.16 Pump down function.....................................................................................................................................12
4.17 Password function .......................................................................................................................................... 12
5.0 Optional kit .................................................................................................................................................................12
5.1 Net configuration with modbus-RTU protocol.....................................................................................12
6.0 Troubleshooting.......................................................................................................................................................13
7.0 Appendices..................................................................................................................................................................14
7.1 AK-RC 111 wiring diagram...........................................................................................................................14
7.2 Part List................................................................................................................................................................14
8.0 Ordering .......................................................................................................................................................................15
Contents

User Guide |Optyma™ control AK-RC 111 single phase
© Danfoss | DCS (vt) | 2020.03 BC309238530328en-000101 | 3
1.0 Introduction
1.1 General
1.2 Product ID codes
1.3 Overall dimension
Main characteristics:
• Cold room temperature displaying and
regulation with decimal point.
• Evaporator temperature with decimal point
displaying from parameter.
• Plant control activation/deactivation.
• Plant alarms signaling (probe error, minimum
and maximum temperature alarm, compressor
protection, door alarm).
• LED indicators and large display illustrate
system status.
• User-friendly keypad.
• Evaporator fans management.
• Manual and automatic defrost (static, through
heaters, through heaters with temperature
control, through cycle reversal).
• Direct or pump-down management and
control of condensing unit up to 2HP.
Applications:
• Complete management of single-phase static
or ventilated refrigeration systems up to 2 HP,
with off-cycle or electrical defrosting and with
direct or pump-down compressor stop.
• Cold room light activation through key on the
panel or through door-switch.
• Direct control of compressor, defrosting
elements, evaporator fans, room light with
outputs directly connectable to the various
units.
• Air recirculation management.
• 2 auxiliary relays with parameter-configured.
• Integrated RS-485 Modbus connection
for Danfoss System Manager or standard
Modbus-RTU network
• Emergency operation in the event of a faulty
probe environment.
• Smart defrost (energy saving).
• Reduced set (night set) from digital input.
• Can be configured for hot or cold applications.
• Configurable digital inputs.
• Control of single-phase evaporator unit only
with refrigerant solenoid enable signal or
remote condensing unit enable signal.
Description:
The AK-RC 111 is a new control panel for cold rooms with a single-phase compressor up to 2HP,
specially designed to provide the user with safety, protection, control and ease of installation.
It allows the user to control all the components on a refrigerating system: compressor, evaporator fans,
defrosting elements, room light and thermostat-holder demisting element.
Controls and manages compressor, defrosting elements, evaporator fans and room light.
2 Aux configurable relays
Differential magnetothermic circuit breaker 16A
Id=300 mA (Id=30 mA on request)
263 mm
96 mm
180 mm
1.4 Identification data The unit described in this manual has an ID plate on the side showing all the relevant identification
data:
• Name of Manufacturer
• Code of electrical board
• Serial number
• Date
• Power supply
• Rated current
• IP protection rating
Type: AK-RC 111
No: 080Z3220
OPTYMA™ Control
Power supply: 230VAC
MADE IN ITALY
S/N: 080R0100 Date: 09/01/18

User Guide |Optyma™ control AK-RC 111 single phase
4 | BC309238530328en-000101 © Danfoss | DCS (vt) | 2020.03
2.0 Installation
2.1 Important information for
the installer
2.2 Standard assembly kit
2.3 Installing the unit
1. Install the device in places where the
protection rating is observed and try not to
damage the box when drilling holes for wire/
pipe seats.
2. Do not use multi-polar cables in which there
are wires connected to inductive/power loads
or signalling wires (e.g. probes/sensors and
digital inputs).
3. Do not fit power supply wiring and signal
wiring (probes/sensors and digital inputs) in
the same raceways or ducts.
4. Minimise the length of connector wires so
that wiring does not twist into a spiral shape
as this could have negative effects on the
electronics.
For the purposes of assembly and use, the electronic AK-RC 111 control unit comes with:
• 3 seals, to be fitted between the fixing screws and the box back panel;
• 1 user’s manual.
Fig 1. Raise the transparent cover that shields the magneto-thermal cut-out switch and remove the screw cover on the
right-hand side.
Fig 2. Undo the 4 fixing screws at the front of the box.
Fig 3. To close the magnetothermic circuit breaker
transparent protection.
Fig 4. Open the front of the box, lift it and slide the two
hinges out as far as they will go.
5. Fit a general protection fuse upstream from
the electronic controller.
6. All wiring must be of a cross-section suitable
for relevant power levels.
7. When it is necessary to make a probe/sensor
extension, the wires must have a cross-
section of at least 1mm2. Probes extension
or shortening could alter their factory
calibration; therefore to check and calibrate
the probes through an external thermometer.

User Guide |Optyma™ control AK-RC 111 single phase
© Danfoss | DCS (vt) | 2020.03 BC309238530328en-000101 | 5
Fig 5. Press on the sides of the hinges to remove them from
their seats and so remove the front panel completely.
Fig 6. Use the three existing holes to fix the box back panel
to the wall: use three screws of a length suitable for the
thickness of the wall to which the panel will be attached.
Fit a rubber washer (supplied) between each screw and the
box backing.
Fig 7. Hook the frontal panel back up to the lower part
of the box by inserting the two hinges in their seats and,
bending them, rotate downwards 180° to gain access to
the electronic board.
Fig 8. Close the front panel, making sure that all the wires
are inside the box and that the box seal sits in its seat
properly. Tighten the front panel using the 4 screws.
Power up the panel and carry out thorough reading/
programming of all the parameters.
Note: Make all the electrical connections as illustrated in the diagram for the corresponding model
(see relative table in appendices). To make electrical connections reliably and maintain the protection
rating, use appropriate cable glands and pipepresses to ensure a good seal. It is advisable to distribute
the passage of the conductors inside the panel as far as possible, in particular to keep the power leads
away from the cables of the signal. Use clips to hold wires in place.
Note: Be careful not to over-tighten the closure screws as this could warp the box and compromise
proper operation of the membrane-type keypad. Install short-circuit overload safety devices on all
the power cables connected to the AK-RC 111 so as to prevent damage to the device. Work and/or
maintenance must ONLY be carried out on the unit after disconnecting the panel from the power
supply and from any inductive/power loads: doing so allows the worker to do his job safely.

User Guide |Optyma™ control AK-RC 111 single phase
6 | BC309238530328en-000101 © Danfoss | DCS (vt) | 2020.03
3.0 Technical characteristics Power supply
Voltage 230 V~ ± 10% 50/60 Hz
Max power (only electronics) ~ 7 VA
Rated current (with all loads connected) 16 A
Climatic conditions
Working temperature -5 – 50 °C
Storage temperature -10 – 70 °C
Relative ambient humidity Lower than 90% Hr
General characteristics
Type of sensors that can be connected NTC 10K 1%
Resolution 0.1 °C
Sensor read precision ± 0.5 °C
Read range -45 – 99 °C
Output characteristics
Description Installed relay Card output characterstics Note
Compressor (Relay 30A AC1) 10 A 250 V~ (AC3) (2HP)
(100000 cicli) The sum of contemporary
absorptions of these
outputs has not to exceed
16 A
Defrost (Relay 30A AC1) 16A 250 V~ (AC1)
Fans (Relay 16A AC1) 2.7 A 250 V~ (AC3)
Room light (Relay 16A AC1) 16 A 250 V~ (AC1)
Aux 1 (free voltage contact) (Relay 5A AC1) 5(3) A 250 V~
Aux 2 (free voltage contact) (Relay 5A AC1) 5(3) A 250 V~
General electrical protection
Differential magnetothermic circuit breaker 16A
Id=300 mA
(Id=30 mA on request)
Disconnecting power 4.5 kA
Dimension characteristics
Dimensions 18.0 cm x 9.6 cm x 26.3 cm (HxPxL)
Insulation and mechanical characteristics
Box protection rating IP65
Box material ABS self-extinguishing
Type of insulation Class II

User Guide |Optyma™ control AK-RC 111 single phase
© Danfoss | DCS (vt) | 2020.03 BC309238530328en-000101 | 7
4.1 Control panel
4.0 Parameter
programming
4.2 Front keypad
4.3 LED display
116
487 9 10 11 12 13 14 15
2
5
3
6
Auxiliary relay control
(controls the relays manual if parameter AU1/AU2 = 2/-2)
1
Cold room temperature / parameters
7
Up/Mute buzzer alarm
2
Stand-by (flashes on stand-by, outputs are deactivated)
8
Room light (flashes if door switch activated)
9
Cold (indicates activation of compressor)
10
Auxiliary (indicates AUX relay calling if AU1/AU2=+/-2 or +/-3)
13
Fans
11
Alarm/warning
14
Hot mode (resistance call signaling)
16
Defrosting
12
Decimal point (flashing in night mode)
15
Stand by (if the system shuts down the LED flashes)
3
Room temperature Setting
4
Down/Manual defrost
5
Room light
6

User Guide |Optyma™ control AK-RC 111 single phase
8 | BC309238530328en-000101 © Danfoss | DCS (vt) | 2020.03
4.4 General
4.5 Key to symbols
4.6 Setting and displaying the
set points
4.7 Level 1 programming
(user level)
4.8 List of Level 1 variables
(user level)
To enhance safety and simplify the operator’s work, the AK-RC 111 has two programming levels; the
first level (Level 1) is used to configure the frequently-modified SETPOINT parameters. The second
programming level (Level 2) is for general parameter programming of the various controller work
modes.
It is not possible to access the Level 2 programming directly from Level 1: you must exit the
programming mode first.
For purposes of practicality the following symbols are used:
() the UP key is used to increase values and mute the alarm.
() the DOWN key is used to decrease values and force defrosting.
1. Press the SET key to display the current SETPOINT (temperature).
2. Hold down the SET key and press the () or () keys to modify the SETPOINT.
Release the SET key to return to cold room temperature display: the new setting will be saved
automatically.
To gain access to the Level 1 configuration menu proceed as follows:
1. Press the () and () keys simultaneously and keep them pressed for a few seconds until the first
programming variable appears on the display.
2. Release the () and () keys.
3. Select the variable to be modified using the () or () key.
4. When the variable has been selected it is possible:
• to display the setting by pressing SET key.
• to modify the setting by pressing the SET key together with the () or () key.
When configuration values have been set you can exit the menu by pressing the () or () keys
simultaneously for a few seconds until the cold room temperature reappears.
5. The new settings are saved automatically when you exit the configuration menu.
Variables Meaning Value Default
r0 Temperature difference compared to main SETPOINT 0.2 – 10 °C 2 °C
d0 Defrost interval (hours)
If d0 = 0 cyclical defrosts Off
0 – 24 hours 4 hours
d2 End-of-defrost setpoint
Defrost is not executed if the temperature read by the defrost
sensor is greater than d2.
(If the sensor is faulty defrost is stopped on time set by the d3
parameter)
-35 – 45 °C 15 °C
d3 Max defrost duration (minutes) 1 – 240 min 25 min
d7 Drip duration (minutes)
At the end of defrost the compressor and fans remain at standstill
for time d7, the defrost LED on the front panel flashes.
0 – 10 min 0 min
F5 Fan pause after defrost (minutes)
Allows fans to be kept at standstill for a time F5 after dripping. This
time begins at the end of dripping. If no dripping has been set the
fan pause starts directly at the end of defrost.
0 – 10 min 0 min
A1 Minimum temperature alarm
Allows user to define a minimum temperature for the room being
refrigerated. Below value A1 an alarm trips: the alarm LED flashes,
displayed temperature flashes and the buzzer sounds to indicate
the problem.
-45 – (A2-1) °C -45 °C
A2 Maximum temperature alarm
Allows user to define a maximum temperature for the room being
refrigerated. Above value A2 an alarm trips: the alarm LED flashes,
displayed temperature flashes and the buzzer sounds to indicate
the problem.
(A1+1) – 99 °C 99 °C
tEu Evaporator sensor temperature display
(displays nothing if dE =1)
evaporator
temperature
read only

User Guide |Optyma™ control AK-RC 111 single phase
© Danfoss | DCS (vt) | 2020.03 BC309238530328en-000101 | 9
4.9 Level 2 programming
(installer level)
4.10 List of Level 2 variables
(installer level)
To access the second programming level press the UP () and DOWN () keys and the LIGHT key
simultaneously for a few seconds.
When the first programming variable appears the system automatically goes to stand-by.
1. Select the variable to be modified by pressing the UP () and DOWN () keys.
When the parameter has been selected it is possible to:
2. View the setting by pressing the SET key.
3. Modify the setting by holding the SET key down and pressing the () or () key.
4. When configuration settings have been completed you can exit the menu by pressing the () and
() keys simultaneously and keeping them pressed until the room temperature reappears.
5. Changes are saved automatically when you exit the configuration menu.
6. Press the STAND-BY key to enable electronic control.
Variables Meaning Value Default
F3 Fan status with compressor off 0 = Fans run continuously
1 = Fans only run when
compressor is working
2 = Fans disabled
1
F4 Fan pause during defrost 0 = Fans run during defrost
1 = Fans do not run during
defrost
1
F6 Evaporator fans activation for air recirculation.
The fans activate for a time defined by F7 if they have
not started working for the F6 time. If activation time
coincides with the defrosting time, end of defrosting
is awaited.
0 – 240 min
0 = (function not activated) 0 min
F7 Evaporator fans duration for air recirculation.
Fans working time for F6 0 – 240 sec 10 sec
dE Sensor presence
If the evaporator sensor is disabled defrosts are
carried out cyclically with period d0: defrosting ends
when an external device trips and closes the remote
defrost contact or when time d3 expires.
0 = evaporator sensor present
1 = no evaporator sensor 0
d1 Defrost type, cycle inversion (hot gas) or with heater
elements 0 = heating element 1 = hot gas
2 = heater with
temperature control
0
dPo Defrost at Power On 0 = disabled
1 = defrost at power-on
(if possible)
0
dSE Smart defrost 0 = disabled
1 = enabled 0
dSt Smart defrost Setpoint (if dSE=1)
The counting of the time between the defrost is
incremented only if the compressor is ON and the
evaporator temperature is less than dSt.
-30 – 30 °C 1 °C
dFd Display viewing during Defrost 0 = current temperature
1 = temperature at the
start of the defrost
2 = “DEF”
1
Ad Modbus Network address 0 – 247 0
Bdr Modbus baudrate 0 = 300 baud
1 = 600 baud
2 = 1200 baud
3 = 2400 baud
4 = 4800 baud
5 = 9600 baud
6 = 14400 baud
7 = 19200 baud
8 = 38400 baud
8
Prt Modbus parity check 0 = none
1 = even
2 = odd
1
Ald Minimum and maximum temperature
signalling and alarm display delay 0 – 240 min 120 min
C1 Minimum time between shutdown and subsequent
switching on of the compressor.
0 – 15 min 0 min
CAL Cold room sensor value correction -10 – 10 °C 0 °C

User Guide |Optyma™ control AK-RC 111 single phase
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CE1 Duration of compressor ON time in the case of
faulty ambient probe
(emergency mode).
If CE1=0 the emergency mode in the presence of
error E0 remains disabled, the compressor remains
off and defrosting is prevented in order to conserve
the remaining cold.
0 – 240 min
0 = disabled
0 min
CE2 Duration of compressor OFF time in the case of
faulty ambient probe (emergency mode). 5 – 240 min 5 min
doC Compressor safety time for door switch:
when the door is opened the evaporator fans shut
down and the compressor will continue working for
time doC, after which it will shut down.
0 – 5 min 0 min
tdo Compressor restart time after door opening. when
the door is opened and after tdo time, it’s setted back
the normal functioning giving door open alarm (Ed)
If the door switch is closed and the light stays on for
a longer time than tdo light cell alarm is signaled
(E9). With tdo=0 the parameter is disabled.
0 – 240 min
0 = disabled
0 min
Fst FAN shutdown TEMPERATURE
The fans will stop if the temperature value read by
the evaporator sensor is higher than this value.
-45 – 99 °C 99 °C
Fd Fst differential 1 – 10 °C 2 °C
LSE Minimum value attributable to setpoint. -45 – (HSE-1) °C -45 °C
HSE Maximum value attributable to setpoint. (LSE+1) – 99 °C 99 °C
AU1 Auxiliary/alarm relay 1 control -6 (NC) = relay de-energised
during stand-by
-5 (NC) = Contact for casing
element control (AUX
relay closed with
compressor output
inactive).
-4 (NC) = pump down function
(NC, see CHAP 5.16)
-3 (NC) = automatic auxiliary
relay managed by StA
temp. setting with 2°C
differential (NC)
-2 (NC) = manual auxiliary relay
controlled via AUX key
(NC)
-1 (NC) = alarm relay (NC)
0 = relay deactivated
1 (NO) = alarm relay (NO)
2 (NO) =manual auxiliary relay
controlled via AUX key
(NO)
3 (NO) = automatic auxiliary
relay managed by StA
temp. setting with 2°C
differential (NO)
4 (NO) = pump down function
(NO, see CHAP 5.16)
5 (NO) = free voltage contact for
condensing unit (AUX
relay and compressor
relay in parallel)
6 (NO) = relay excited during
stand-by
-1
AU2 Auxiliary/alarm relay 2 control (like AU1 ) 5
StA Temperature setting for auxiliary relay -45 – 99 °C 0 °C
nSC Correction factor for the SET button during night
operation (energy saving)
(with In1 or In2 = 8 or -8)
During night operation the control set is:
Set Control = Set + nSC
In night mode decimal point flashes.
-20 – 20 °C 0 °C