Danfoss OPTYMA User manual

User Guide
Optyma™ control
AK-RC 113 three phase

User Guide |Optyma™ control AK-RC 113 three phase
2 | BC317523579312en-000101 © Danfoss | DCS (vt) | 2020.03
Contents 1.0 Introduction
1.1 General.................................................................................................................................................................3
2.0 Technical Characteristics
2.1 Product ID Codes..............................................................................................................................................3
2.2 Product Series – Technical Characteristics ..............................................................................................3
2.3 Overall dimension............................................................................................................................................4
2.4 Identification Data...........................................................................................................................................4
2.5 Transport and Storage....................................................................................................................................4
3.0 Functionality
3.1 Functions managed by the AK-RC 113 electrical panel .....................................................................4
4.0 Installation
4.1 Standard equipment for assembly and use ...........................................................................................5
4.2 Mechanical assembly of the panel ............................................................................................................5
4.3 Electrical wirings ..............................................................................................................................................6
4.4 Connection of the front panel.....................................................................................................................7
4.5 Pre-use checks...................................................................................................................................................7
4.6 Compressor motor circuit breaker calibration ......................................................................................8
4.7 Closing the electrical panel..........................................................................................................................8
5.0 Parameter programming
5.1 Control panel.....................................................................................................................................................9
5.2 Front keypad......................................................................................................................................................9
5.3 LED display .........................................................................................................................................................9
5.4 General.............................................................................................................................................................. 10
5.5 Key to symbols...............................................................................................................................................10
5.6 Setting and displaying the set points.................................................................................................... 10
5.7 Level 1 programming (user level)............................................................................................................10
5.8 List of Level 1 variables (user level)......................................................................................................... 11
5.9 Level 2 programming (installer level)....................................................................................................11
5.10 List of Level 2 variables (installer level) ................................................................................................. 11
5.11 Switching on the AK-RC 113 electronic controller............................................................................ 14
5.12 Cold/hot activation/deactivation conditions .....................................................................................14
5.13 Manual defrost activation / deactivation .............................................................................................14
5.14 Defrost with thermostated resistances.................................................................................................14
5.15 Hot gas defrost............................................................................................................................................... 14
5.16 Pump down function................................................................................................................................... 14
5.17 Password function ........................................................................................................................................14
6.0 Modbus connection
6.1 Net configuration with modbus-RTU protocol ..................................................................................15
7.0 Diagnostics
7.1 Diagnostics by means of alarm codes...................................................................................................15
7.2 Troubleshooting............................................................................................................................................ 16
8.0 Maintenance
8.1 General safety rules......................................................................................................................................17
8.2 Maintenance...................................................................................................................................................17
9.0 Appendices
9.1 AK-RC 113 wiring diagram.........................................................................................................................18
9.2 Part List .............................................................................................................................................................19
10.0 Ordering .......................................................................................................................................................................19

User Guide |Optyma™ control AK-RC 113 three phase
© Danfoss | DCS (vt) | 2020.03 BC317523579312en-000101 | 3
1.0 Introduction
1.1 General The OPTYMA™ Control three-phase is a controller for refrigeration systems with a three-phase
compressor or for controlling the three-phase evaporating unit only, for complete cold room
management. Front access to the automatic fuse and motor protector for the compressor and an
innovative design combine to make it the ideal choice for effective refrigeration control.
Applications:
• Complete management of three-phase refrigerating systems up to 7.5 HP static or ventilated, with
off-cycle or electrical defrosting.
2.0 Technical
Characteristics
2.1 Product ID Codes Line of electrical panel of OPTYMATM Control (4 HP):
Line of electrical panel of OPTYMATM Control (7 HP):
Code Numbers
Identification codes Compressor motor circuit breaker range
080Z3221 4,5 – 6,3 A
080Z3222 7 – 10 A
Code Numbers
Identification codes Compressor motor circuit breaker range
080Z3226 11 – 16 A
080Z3227 14 – 20 A
2.2 Product Series –
Technical Characteristics Technical characteristics OPTYMATM Control (4 HP) OPTYMATM Control (7.5 HP)
Box dimensions 400 x 300 x 135 mm 400 x 300 x 135 mm
Weight 9 kg 10 kg
Protection rating IP 65 IP 65
Power supply (3F+N+T) 400 V AC ±10% 50/60Hz 400 V AC ±10% 50/60Hz
Load type 3-phase 3-phase
Operating temperature - 5 – 40 °C - 5 – 40 °C
Storage temperature -25 – 55 °C -25 – 55 °C
Relative ambient humidity from 30% to 95% RH
w/out condensate
from 30% to 95% RH
w/out condensate
Altitude < 1000 m < 1000 m
Main switch / general protection
Interruption power
4 poles magnetothermic 16A “D”
Icn=6kA / Ics=8kA / Icu=15kA
4 poles magnetothermic 25A “D”
Icn=6kA / Ics=8kA / Icu=15kA
Compressor protection Adjustable motor circuit breaker Adjustable motor circuit breaker
Defrosting Electrical Electrical
Status indicators LED + display LED + display
Alarm signals LED + buzzer LED + buzzer
Inputs
Ambient probe NTC 10K 1% NTC 10K 1%
Evaporator probe NTC 10K 1% NTC 10K 1%
Door switch Present Present
High/low pressure switch Present Present
Kriwan® connection Present Present
Compressor functioning mode selection Pump-down / thermostat Pump-down / thermostat
Outputs
Compressor See motor circuit breaker thermal
range relative to panel ID code
See motor circuit breaker thermal
range relative to panel ID code
Condenser fans output 1 800 W (1 phase) 800 W total (1 phase)
Condenser fans output 2 (separated)
Evaporator fans 500 W (1 phase) 2000 W (1phase / 3 phases)
Defrosting heaters 6000 W (AC1) eq. resistive load 9000 W (AC1) eq. resistive load
Room light 800 W (AC1) resistive load 800 W (AC1) resistive load
Solenoid valve Present Present
Compressor oil heater Present Present
Aux1 100 W 100 W
Aux2 100 W 100 W
Supervision system Modbus Modbus

User Guide |Optyma™ control AK-RC 113 three phase
4 | BC317523579312en-000101 © Danfoss | DCS (vt) | 2020.03
2.3 Overall dimension
2.4 Identification Data
2.5 Transport and Storage
400 mm 135 mm
300 mm
The device described in this manual is provided on the side of a tag showing its identification data:
• Manufacturer's Name
• Code of the electrical panel
• Serial number (S.N.)
• Power supply
• Compressor range
Each electrical panel is supplied packed to be shipped without being damaged under
normal conditions of transport. In the case of subsequent transport, it must be verified that:
• There are no objects or free parts inside the panel
• The door of the panel is correctly closed and locked
• If the original packaging is not used, adequately protect the product to allow transport without
damage.
The storage room must have an adequate temperature and a low humidity value; in addition,
avoid that the electrical panel may come into contact with aggressive contaminants, which could
compromise its functionality and electrical safety.
Type: AK-RC 113
No: 080Z3227
OPTYMA™ Control
Power supply: 400VAC/3 - 50/60Hz+Neutral
Compressor range: 14-20A
MADE IN ITALY
S/N: 080R0100 Date: 19/01/18
3.0 Functionality
3.1 Functions managed by the
AK-RC 113 electrical panel
Signaling with LED icons of the plant status.
Applications:
Complete management of 3 phase static or ventilated refrigeration systems, with off-cycle or electrical
defrosting and with direct or pump-down compressor stop.
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.
• 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.

User Guide |Optyma™ control AK-RC 113 three phase
© Danfoss | DCS (vt) | 2020.03 BC317523579312en-000101 | 5
4.0 Installation
The AK-RC 113 electrical panel, for assembly and use, is equipped with:
• Nr 4 sealing gaskets, to be placed between the fixing screw and the back of the box
• Nr 1 use and maintenance manual
• Nr 1 wiring diagram
• Nr 1 drilling layout
• Nr 2 NTC probes 10K 1%
• Each panel is designed for wall mounting; choose an appropriate fixing system, depending on the
weight of the panel and the type of support on which it will be fixed.
• Install the panel in places that respect its IP rating.
• Keep the IP protection level of the appliance intact by properly assembling the cable glands and/or
the pipe clamps with appropriate characteristics.
• Install the panel at a height that allows the operator an easy use and internal access. The operator
should not come to be in a dangerous situation when he is working on the panel. The height must
however be between 0.6 and 1.7 meters from the floor.
• Install the electrical panel in an area away from sources of heat and possibly protected from
atmospheric agents.
4.1 Standard equipment for
assembly and use
4.2 Mechanical assembly of
the panel
Following are the steps to perform a correct mechanical installation of the panel:
Fig 1. Lift the transparent protection cover of the general
magneto-thermal switch.
Fig 3. Unscrew the 4 fixing screws of the front panel.
Fig 5. Open the front of the panel by lifting it up and
sliding the two black hinges up to the end of the stroke.
Fig 2. Remove the screw cover on the right side.
Fig 4. Close the transparent protection cover of the general
magnetothermal switch.
Fig 6. Flex the hinges and rotate the front panel 180°
downwards to access the inside of the panel and
disconnect the electronic board connector.

User Guide |Optyma™ control AK-RC 113 three phase
6 | BC317523579312en-000101 © Danfoss | DCS (vt) | 2020.03
• For electrical connections, refer to the specific wiring diagram and to the technical characteristics of
the panel model to be installed.
• The power supply to the panel must be carried out exclusively with a dedicated line, upstream
of which a device suitable for protection against indirect contacts (differential switch) must be
installed.
• Avoid putting power cables and signal cables (probes and digital inputs) in the same conduits (or
pipes).
• Avoid using multipolar cables in which there are conductors connected to inductive and power
loads and signal conductors such as probes and digital inputs.
• Reduce the lengths of the connecting cables as much as possible, preventing the wiring from taking
the spiral shape that is harmful to possible inductive effects on the electronics.
• If it’s necessary to extend the probes, conductors must be used with a suitable section and in any
case not less than 1 mm.
4.3 Electrical wirings
Fig 7. Apply pressure on the sides of each individual hinge
to remove it from its seat and completely remove the front
panel.
Fig 9. Using the supplied drilling layout, make the four
fixing holes on the wall.
Fig 11. Now make the electrical connections as indicated
in the following chapter.
Fig 8. Using a screwdriver, press the four pre-set holes on
the back to make the four fixing holes of the electrical
panel.
Fig 10. Using the four holes made previously, fix the
back of the box using four screws of adequate length in
relation to the thickness of the wall. Place a rubber washer
(supplied) between each fastening screw and the back of
the box.

User Guide |Optyma™ control AK-RC 113 three phase
© Danfoss | DCS (vt) | 2020.03 BC317523579312en-000101 | 7
4.4 Connection of the front
panel
4.5 Pre-use checks
• For connections to the electrical panel, cables with a section suitable for the current passing
through them must be used. The degree of insulation must also be compatible with the applied
voltages. Prefer cables with flame retardant insulator and with a low emission of toxic fumes if
affected by fire.
It’s mandatory to connect the clamp marked with the initials PE to the ground system of the
power supply network. If necessary, check the efficiency of the ground system.
Other conductors with the exception of the external protection conductor must not be
connected to the PE terminal.
• After having carried out the wiring, check the correct execution of the same by means of the wiring
diagram.
• Make sure that the screws on the clamps are properly tightened. Check, when possible, the correct
functioning of external protection devices.
• Make a correct calibration of the motor protection switch (if present) dedicated to the compressor
motor, as indicated in the following chapter.
• After turning on the electrical panel, check the correct current absorption of the various loads. After
operating the system for a few hours, it is advised to check the correct tightening of the terminal
board screws (including the connection of the power supply line).
Caution: before carrying out this operation, the panel must be switched off by cutting off the
supply line upstream and blocking the sectioning with a padlock to ensure maximum safety.
Check the absence of voltage with a Tester before any operation.
Re-hook the front panel and reconnect the connector of the electronic board as indicated below.
Fig 12. Re-hook the front panel at the back of the box by
reinserting the two black hinges in the appropriate seats.
Fig 14. In case panel is connected with Modbus network
and/or Alarm/Aux relays are used, wirings must be
done directly on the electronic card clamps. It’s suggested
to put that wirings beside the connection cables from
electronic card and bottom of the box. For further
clarification on the clamps please refer to the chapter 6.
Fig 13. Flex the hinges and rotate the front
panel 180° downwards to access the inside of the panel
and reconnect the connector of the electronic board.

User Guide |Optyma™ control AK-RC 113 three phase
8 | BC317523579312en-000101 © Danfoss | DCS (vt) | 2020.03
4.6 Compressor motor circuit
breaker calibration
4.7 Closing the electrical panel
Below we show step by step how to correctly calibrate motor circuit breaker dedicated to the
compressor.
Once the electrical connections, checks and calibrations have been completed, the electrical panel
can be closed.
Fig 15. When the system is started for first time it’s
suggested to calibrate the motor circuit breaker on the
compressor power circuits. Using an ammeter verify the
effective absorption.
Fig 18. Close the front panel, making sure that all cables
are inside the box and that the box gasket is correctly
housed.
Fig 20. Power up the panel and carry out thorough reading/
programming of all the parameters.
Fig 17. To carry out the calibration, use the adjustment
screw on the front of the motor protection switch.
Fig 16. Make the motor circuit breaker calibration
basing on the measured absorption. Any way the set up
value must not be higher than the one expected by the
compressor manufacturer.
Caution: incorrect calibration may cause compressor
failure or unwanted action of the motor protection switch.
Fig 19. Tighten the front panel using the 4 screws. Refit the
cover of the screws on the right side.

User Guide |Optyma™ control AK-RC 113 three phase
© Danfoss | DCS (vt) | 2020.03 BC317523579312en-000101 | 9
5.0 Parameter
programming
5.1 Control panel
5.2 Front keypad
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
Up/Mute buzzer alarm
2
Stand by (if the system shuts down the LED flashes)
3
Room temperature setting
4
Down/Manual defrost
5
Room light
6
5.3 LED display Cold room temperature parameter / settings
7
Stand-by icon
LED OFF = Electrical panel OFF
LED ON = Electrical panel ON and in regulation
LED flashing = Electrical panel in stand-by (outputs are disabled)
Door Switch / Room Light Icon
LED OFF = Door switch disabled or not in use and room light OFF
LED ON = Room light ON
LED Flashing = Door switch enabled and room light ON
Cold Call Icon
LED OFF = Cold call OFF
LED ON = Cold call ON
Fan Call Icon
LED OFF = Fan call OFF
LED ON = Fan call ON
LED Flashing = Fans paused after defrost (see parameter F4)
8
9
10
11

User Guide |Optyma™ control AK-RC 113 three phase
10 | BC317523579312en-000101 © Danfoss | DCS (vt) | 2020.03
Defrost Call Icon
LED OFF = Defrost call OFF
LED ON = Defrost call ON
LED Flashing = Dripping phase in progress after defrost (see parameter d7)
Auxiliary Relay Icon (AUX relay call signaling if AU1/AU2 = + 2 or + 3)
LED OFF = Aux relay call OFF
LED ON = Aux relay call ON
Alarm Icon
LED OFF = No alarm in progress
LED ON = Alarm activated then stopped
LED Flashing = Alarm in progress
Decimal Point
(flashing in night mode)
Hot Mode
(signaling of activation of resistances)
12
13
14
15
16
To enhance safety and simplify the operator’s work, the AK-RC 113 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.
5.4 General
5.5 Key to symbols
5.6 Setting and displaying the
set points
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.
5.7 Level 1 programming
(user level)
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.