Danfoss AK-CC 250A

02-2014 RI8PG202
INSTRUCTIONS
AK-CC 250A
Data communication MOD-BUS:
Coordinated defrost
t
amb
= 0 - +55°C
230 V a.c. 50/60 Hz
2.5 VA
CE (250 V a.c.) UL *** (240 V a.c.)
DO1. Refrigeration * 10 (6) A
10 A Resistive
5FLA, 30LRA
DO2. Defrost * 10 (6) A
10 A Resistive
5FLA, 30LRA
DO3. Fan or
refrigeration 2 *
6 (3) A
6 A Resistive
3FLA, 18LRA
131 VA Pilot duty
DO4. Alarm, light, rail heat
or hotgas defrost *
4 (1) A
Min. 100 mA**
4 A Resistive
131 VA Pilot duty
* DO1 and DO2 are 16 A relays. DO3 and DO4 are 8 A relays. Max. load must be keept.
** Gold plating ensures make function with small contact loads
*** UL-approval based on 30000 couplings
10 V < U < 256 V
No
Function
Pt /PTC sensors
See page 6.

Danfoss AK-CC 250A Specifications

General

Model	AK-CC 250A
Type	Controller
Power Supply	24 V AC/DC
Display Type	LCD
Communication Protocol	Modbus RTU
Analog Inputs	2
Relay Outputs	3
Power Consumption	5 W
Enclosure	Plastic
Protection Class	IP20
Weight	0.3 kg

Summary

Instructions and Product Overview

Model and Key Specifications

Identifies the AK-CC 250A model and its primary electrical and environmental specifications.

Output Relay Functions

Details the functionality and load capacities of the device's output relays (DO1-DO4).

Sensor and Communication Interfaces

Overview of supported sensors (Pt/PTC) and the MOD-BUS communication interface.

Defrost and Communication Features

Explains coordinated defrost and data communication via MOD-BUS.

Electrical Connections

Electrical Wiring Diagrams

Comprehensive set of electrical wiring diagrams for various device configurations.

Device Setup and Parameters

Setup Procedure

Step-by-step guide for configuring the device's operational parameters.

Parameter Reference

Detailed list of all configurable parameters, their codes, and default/actual values.

Function-Specific Settings

Fan, HACCP, and Clock Parameters

Configuration options for fan operation, HACCP function, and real-time clock settings.

Miscellaneous Settings

Settings for various other device parameters not categorized elsewhere.

User Interface and Diagnostics

Navigation and Button Operations

Guide to operating the device using its buttons and interface for parameter access.

Fault and Alarm Code Reference

List and explanation of device fault and alarm codes for troubleshooting purposes.

LED Status Indicators

Explanation of the LED indicators on the device for operational status.

Sensor Information

Sensor Overview and Compatibility

Details on sensor types, their resistance values, and compatibility with the controller.