Danfoss AK-CC 250A Instructions

Technical Specifications

Ambient Temperature Range: 0 - +55°C

Power Supply: 230 V a.c. 50/60 Hz

Power Consumption: 2.5 VA

Voltage Range for Control: 10 V < U < 256 V

Certifications: CE (250 V a.c.), UL *** (240 V a.c.)

Output Relays

* DO1 and DO2 are 16 A relays. DO3 and DO4 are 8 A relays. Max. load must be kept.

** Gold plating ensures make function with small contact loads

*** UL-approval based on 30000 couplings

Features

Coordinated defrost: Supported.

Sensor Input: Supports Pt/PTC sensors. See page 6 for details.

Data Communication: MOD-BUS interface available.

Diagram showing the physical dimensions of the AK-CC 250A controller: Height 80mm, Width 84mm, Depth 71mm. The unit has an IP65 rating.

Diagram of MOD-BUS communication interface, showing terminals A and B for data transmission. A label indicates "No Function" for terminals A and B when not used.

Electrical Connections

The AK-CC 250A offers multiple electrical connection configurations. Refer to the diagrams below for specific wiring setups.

Note on DI1, DI2: Compatible with Guld, Gold, Or, Oro. Maximum cable length is 15 m.

Connection Diagrams (Page 2)

Diagrams illustrating various electrical connection configurations (1 through 10) for the AK-CC 250A controller, detailing terminal assignments for inputs and outputs. Each diagram shows a 230V power input and connections for S3, S4, S5, DI1, and DI2 terminals, along with various output symbols representing relays and other functions. Specific diagrams include labels like "Bypass HG" and "Suction" for context.

• Diagram 1: General connection setup.
• Diagram 2: General connection setup.
• Diagram 3: General connection setup.
• Diagram 4: Connection for Bypass HG and Suction.
• Diagram 5: General connection setup.
• Diagram 6: General connection setup.
• Diagram 7: General connection setup.
• Diagram 8: General connection setup.
• Diagram 9: General connection setup.
• Diagram 10: General connection setup.

Settings and Configuration

This section guides users through setting up the AK-CC 250A controller, including quick-setup options and detailed parameter adjustments.

Setting Up the Controller (Step-by-Step)

1. Open parameter r12 and stop the regulation.
2. Open parameter 006 and set the used sensor type.
3. Select electric connection based on the drawings on page 2.
4. Open parameter 061 and set the electric connection number in it.
5. Select one of the preset settings from the auxiliary table.
6. Open parameter 062 and set the number for the array of presettings.
7. Open parameter r12 and start the regulation.
8. Review factory settings and make necessary changes.
9. For network configuration: Set the address in 003 and start the scan function in the system unit.

Auxiliary Table for Settings (Quick-Setup)

This table provides preset configurations for different operating scenarios (Case and Room).

Array 1-6: The settings in the grey fields will be changed.

Parameters

The following table details various parameters for the AK-CC 250A controller, categorized by function.

Advanced Functions and Settings

Fan Control

HACCP Function

Real Time Clock

Miscellaneous

Service and Diagnostics

Service Information

Status codes are shown on page 5.

*) Can only be set when regulation is stopped (r12=0)
**) Can be controlled manually, but only when r12=-1
***) With access code 2 the access to these menus will be limited

Factory settings are indicated for standard units. Other code numbers have customized settings. SW = 2.3x

Fault, Alarm, and Status Codes

User Interface

The buttons

Set menu

1. Push the upper button until a parameter r01 is shown
2. Push the upper or the lower button and find that parameter you want to change
3. Push the middle button until the parameter value is shown
4. Push the upper or the lower button and select the new value
5. Push the middle button again to enter the value.

Cutout alarm relay / receipt alarm/see alarm code
• Push short the upper button

Set temperature

1. Push the middle button until the temperature value is shown
2. Push the upper or the lower button and select the new value
3. Push the middle button to select the setting.

Reading the temperature at defrost sensor
• Push briefly the lower button

Manuel start or stop of a defrost
• Push the lower button for four seconds. (Though not for application 4).

See HACCP registration

1. Give the middle button a long push until h01 appears
2. Select required h01-h10
3. See value by giving the middle button a short push

LED Indicators

Light emitting diode

• ? = refrigeration
• ❄️ = defrost
• ? = fan running

Flashes fast at alarm

HACCP

HACCP function is active

Sensor Information

Sensor Overview

Schematic showing the sensor overview, illustrating the connection of sensors S3, S4, and S5 to the controller.

Compatibility with other brands:

• Carel: TSH/TST/TSM/TSQ/PT1
• Dixell: S6, PMG/PMP/PMT
• Elliwell: SN6/SN7
• Lae: ST1K.CP
• Frigo: VX6

Sensor Type Selection (Parameter 006):

• Pt: Pt 1000 Ω @ 0°C (AKS 11, AKS 12, AKS 21)
• P01: PTC 1000 Ω (nominal 990 Ω) = EKS 111
• P02: PTC 1000 Ω @ 25°C (nominal 1000 Ω)

Additional Information

Manuals available in multiple languages:

• English Manual
• Deutsches Manual
• Manuel en français
• Dansk Manual
• Manual español
• Svenska Handbok
• Dutch Handleiding

For further information, visit: www.danfoss.com

Environmental Note: The product contains electrical components and must be disposed of separately from domestic waste, following local and current legislation for electrical and electronic waste.