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Danfoss AK-PC 781

Danfoss AK-PC 781
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Capacity controller with
heat recovery
AK-PC 781
User Guide
ADAP-KOOL® Refrigeration control systems
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Danfoss AK-PC 781 Specifications

General IconGeneral
TypeController
CategoryRefrigeration Controller
Power Supply24 V AC/DC
Analog Inputs2
Analog Outputs2
DisplayLCD
MountingDIN Rail
Protection ClassIP20
CommunicationModbus RTU
Output Current2 A

Summary

Menu Operation Overview

Validity

Specifies the controller type and programme version validity.

Function Groups

Outlines the organization of functions and settings within the menu.

Documentation and AKM Menu

Documentation

Explains how to document controller settings via the print function.

AKM Menu Functions

Lists available functions within the AKM menu for settings.

Main Settings

Measurements

Measured parameters for main settings.

Settings

Configuration options for main settings.

Suction Capacity Control Settings

Settings

Configuration parameters for suction capacity control.

Step Control Mode

Defines how compressors are controlled (sequential, cyclic, best fit).

Suction Compressor Status

Measurements

Detailed status parameters for compressors.

High Pressure Control Measurements

Measurements

Measured parameters for high pressure control.

Oil Management

Measurements

Oil management related measurements.

Settings

Settings for oil management and equalization.

Condenser Capacity Control

Measurements

Measured parameters for condenser control.

Settings

Configuration options for condenser capacity.

Condenser Fan Status

Measurements

Measured parameters for condenser fans.

Heat Recovery

Measurements

Measured parameters for heat recovery.

Alarm Priorities

Measurements

Measured parameters related to alarms.

Settings

Configuration of alarm priorities.

General Alarm Inputs

Measurements

Measured values for general alarm inputs.

Settings

Settings for alarm delays on digital inputs.

ThermostatPressostats

Measurements

Measured values from thermostats and pressostats.

Settings

Configuration for thermostat and pressostat functions.

Voltage and PI Inputs

Measurements

Measured values from voltage and PI inputs.

Settings

Configuration for voltage and PI inputs.

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